Articles | Volume 22, issue 12
https://doi.org/10.5194/nhess-22-4019-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-22-4019-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Dec 2022
Research article |
| 19 Dec 2022
| 19 Dec 2022
Drivers of extreme burnt area in Portugal: fire weather and vegetation
cE3c: centre for Ecology, Evolution and Environmental changes, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
Akli Benali
Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
Mário Pereira
Centro de Investigação e de Tecnologias Agro-Ambientais e Biológicas (CITAB), Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal
IDL, Universidade de Lisboa, Lisbon, Portugal
João Silva
Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
João Nunes
cE3c: centre for Ecology, Evolution and Environmental changes, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
Soil Physics and Land Management Group, Wageningen University and Research, Wageningen, the Netherlands
Related authors
I. Bashmachnikov, Â. Nascimento, F. Neves, T. Menezes, and N. V. Koldunov
Ocean Sci., 11, 803–827, https://doi.org/10.5194/os-11-803-2015, https://doi.org/10.5194/os-11-803-2015, 2015
Akli Benali, Nuno Guiomar, Hugo Gonçalves, Bernardo Mota, Fábio Silva, Paulo M. Fernandes, Carlos Mota, Alexandre Penha, João Santos, José M. C. Pereira, and Ana C. L. Sá
Earth Syst. Sci. Data, 15, 3791–3818, https://doi.org/10.5194/essd-15-3791-2023, https://doi.org/10.5194/essd-15-3791-2023, 2023
Short summary
Short summary
We reconstructed the spread of 80 large wildfires that burned recently in Portugal and calculated metrics that describe how wildfires behave, such as rate of spread, growth rate, and energy released. We describe the fire behaviour distribution using six percentile intervals that can be easily communicated to both research and management communities. The database will help improve our current knowledge on wildfire behaviour and support better decision making.
Ana C. L. Sá, Bruno Aparicio, Akli Benali, Chiara Bruni, Michele Salis, Fábio Silva, Martinho Marta-Almeida, Susana Pereira, Alfredo Rocha, and José Pereira
Nat. Hazards Earth Syst. Sci., 22, 3917–3938, https://doi.org/10.5194/nhess-22-3917-2022, https://doi.org/10.5194/nhess-22-3917-2022, 2022
Short summary
Short summary
Assessing landscape wildfire connectivity supported by wildfire spread simulations can improve fire hazard assessment and fuel management plans. Weather severity determines the degree of fuel patch connectivity and thus the potential to spread large and intense wildfires. Mapping highly connected patches in the landscape highlights patch candidates for prior fuel treatments, which ultimately will contribute to creating fire-resilient Mediterranean landscapes.
Marj Tonini, Joana Parente, and Mário G. Pereira
Nat. Hazards Earth Syst. Sci., 18, 1647–1664, https://doi.org/10.5194/nhess-18-1647-2018, https://doi.org/10.5194/nhess-18-1647-2018, 2018
Short summary
Short summary
We assessed the evolution of the rural–urban interface (RUI) in Portugal based on land cover changes. A significant increase in artificial surfaces was registered near the main metropolitan communities, whilst the abandonment of agricultural land near the inland urban areas led to an increase in uncultivated semi-natural areas. Consequently, RUI increased more than two-thirds and burnt areas within the RUI doubled, emphasizing the importance of RUI monitoring for land and fire managers.
I. Bashmachnikov, Â. Nascimento, F. Neves, T. Menezes, and N. V. Koldunov
Ocean Sci., 11, 803–827, https://doi.org/10.5194/os-11-803-2015, https://doi.org/10.5194/os-11-803-2015, 2015
D. Hawtree, J. P. Nunes, J. J. Keizer, R. Jacinto, J. Santos, M. E. Rial-Rivas, A.-K. Boulet, F. Tavares-Wahren, and K.-H. Feger
Hydrol. Earth Syst. Sci., 19, 3033–3045, https://doi.org/10.5194/hess-19-3033-2015, https://doi.org/10.5194/hess-19-3033-2015, 2015
S. C. Pereira, A. C. Carvalho, J. Ferreira, J. P. Nunes, J. J. Keizer, and A. Rocha
Hydrol. Earth Syst. Sci., 17, 3741–3758, https://doi.org/10.5194/hess-17-3741-2013, https://doi.org/10.5194/hess-17-3741-2013, 2013
Related subject area
Other Hazards (e.g., Glacial and Snow Hazards, Karst, Wildfires Hazards, and Medical Geo-Hazards)
Fluid conduits and shallow-reservoir structure defined by geoelectrical tomography at the Nirano Salse (Italy)
Estimating the effects of meteorology and land cover on fire growth in Peru using a novel difference equation model
Review article: Snow and ice avalanches in high mountain Asia – scientific, local and indigenous knowledge
Reduced-order digital twin and latent data assimilation for global wildfire prediction
Avalanche size estimation and avalanche outline determination by experts: reliability and implications for practice
A user perspective on the avalanche danger scale – insights from North America
Early warning system for ice collapses and river blockages in the Sedongpu Valley, southeastern Tibetan Plateau
Fire risk: an integrated modelling approach
Characterizing the rate of spread of large wildfires in emerging fire environments of northwestern Europe using Visible Infrared Imaging Radiometer Suite active fire data
Evaluation of low-cost Raspberry Pi sensors for structure-from-motion reconstructions of glacier calving fronts
Temporal evolution of crack propagation characteristics in a weak snowpack layer: conditions of crack arrest and sustained propagation
A data-driven model for Fennoscandian wildfire danger
Equivalent hazard magnitude scale
Statistical modelling of air quality impacts from individual forest fires in New South Wales, Australia
Coupling wildfire spread simulations and connectivity analysis for hazard assessment: a case study in Serra da Cabreira, Portugal
Glacial lake outburst flood hazard under current and future conditions: worst-case scenarios in a transboundary Himalayan basin
What weather variables are important for wet and slab avalanches under a changing climate in a low-altitude mountain range in Czechia?
Modelling ignition probability for human- and lightning-caused wildfires in Victoria, Australia
Automated snow avalanche release area delineation in data-sparse, remote, and forested regions
The 2017 Split wildfire in Croatia: evolution and the role of meteorological conditions
Progress and challenges in glacial lake outburst flood research (2017–2021): a research community perspective
Global assessment and mapping of ecological vulnerability to wildfires
The impact of terrain model source and resolution on snow avalanche modeling
Travel and terrain advice statements in public avalanche bulletins: a quantitative analysis of who uses this information, what makes it useful, and how it can be improved for users
Data-driven automated predictions of the avalanche danger level for dry-snow conditions in Switzerland
On the correlation between a sub-level qualifier refining the danger level with observations and models relating to the contributing factors of avalanche danger
Automated avalanche hazard indication mapping on a statewide scale
Forecasting the regional fire radiative power for regularly ignited vegetation fires
Environmental factors affecting wildfire-burned areas in southeastern France, 1970–2019
Detrainment and braking of snow avalanches interacting with forests
Past and future trends in fire weather for the UK
Methodological and conceptual challenges in rare and severe event forecast verification
Multi-method monitoring of rockfall activity along the classic route up Mont Blanc (4809 m a.s.l.) to encourage adaptation by mountaineers
Wildfire–atmosphere interaction index for extreme-fire behaviour
How is avalanche danger described in textual descriptions in avalanche forecasts in Switzerland? Consistency between forecasters and avalanche danger
Data-based wildfire risk model for Mediterranean ecosystems – case study of the Concepción metropolitan area in central Chile
The mud volcanoes at Santa Barbara and Aragona (Sicily, Italy): a contribution to risk assessment
Impact of information presentation on interpretability of spatial hazard information: lessons from a study in avalanche safety
ABWiSE v1.0: toward an agent-based approach to simulating wildfire spread
Multi-decadal geomorphic changes of a low-angle valley glacier in the East Kunlun Mountains: remote sensing observations and detachment hazard assessment
Spatial and temporal subsidence characteristics in Wuhan (China), during 2015–2019, inferred from Sentinel-1 synthetic aperture radar (SAR) interferometry
Formation, evolution, and drainage of short-lived glacial lakes in permafrost environments of the northern Teskey Range, Central Asia
Towards a compound-event-oriented climate model evaluation: a decomposition of the underlying biases in multivariate fire and heat stress hazards
Assessing the effect of lithological setting, block characteristics and slope topography on the runout length of rockfalls in the Alps and on the island of La Réunion
Evolution of surface deformation related to salt-extraction-caused sinkholes in Solotvyno (Ukraine) revealed by Sentinel-1 radar interferometry
Attribution of the Australian bushfire risk to anthropogenic climate change
Synoptic atmospheric circulation patterns associated with deep persistent slab avalanches in the western United States
A regional spatiotemporal analysis of large magnitude snow avalanches using tree rings
Examining the operational use of avalanche problems with decision trees and model-generated weather and snowpack variables
A classification scheme to determine wildfires from the satellite record in the cool grasslands of southern Canada: considerations for fire occurrence modelling and warning criteria
Gerardo Romano, Marco Antonellini, Domenico Patella, Agata Siniscalchi, Andrea Tallarico, Simona Tripaldi, and Antonello Piombo
Nat. Hazards Earth Syst. Sci., 23, 2719–2735, https://doi.org/10.5194/nhess-23-2719-2023, https://doi.org/10.5194/nhess-23-2719-2023, 2023
Short summary
Short summary
The Nirano Salse (northern Apennines, Italy) is characterized by several active mud vents and hosts thousands of visitors every year. New resistivity models describe the area down to 250 m, improving our geostructural knowledge of the area and giving useful indications for a better understanding of mud volcano dynamics and for the better planning of safer tourist access to the area.
Harry Podschwit, William Jolly, Ernesto Alvarado, Andrea Markos, Satyam Verma, Sebastian Barreto-Rivera, Catherine Tobón-Cruz, and Blanca Ponce-Vigo
Nat. Hazards Earth Syst. Sci., 23, 2607–2624, https://doi.org/10.5194/nhess-23-2607-2023, https://doi.org/10.5194/nhess-23-2607-2023, 2023
Short summary
Short summary
We developed a model of fire spread that assumes that fire spreads in all directions at a constant speed and is extinguished at a constant rate. The model was fitted to 1003 fires in Peru between 2001 and 2020 using satellite burned area data from the GlobFire project. We fitted statistical models that predicted the spread and extinguish rates based on weather and land cover variables and found that these variables were good predictors of the spread and extinguish rates.
Anushilan Acharya, Jakob F. Steiner, Khwaja Momin Walizada, Salar Ali, Zakir Hussain Zakir, Arnaud Caiserman, and Teiji Watanabe
Nat. Hazards Earth Syst. Sci., 23, 2569–2592, https://doi.org/10.5194/nhess-23-2569-2023, https://doi.org/10.5194/nhess-23-2569-2023, 2023
Short summary
Short summary
All accessible snow and ice avalanches together with previous scientific research, local knowledge, and existing or previously active adaptation and mitigation solutions were investigated in the high mountain Asia (HMA) region to have a detailed overview of the state of knowledge and identify gaps. A comprehensive avalanche database from 1972–2022 is generated, including 681 individual events. The database provides a basis for the forecasting of avalanche hazards in different parts of HMA.
Caili Zhong, Sibo Cheng, Matthew Kasoar, and Rossella Arcucci
Nat. Hazards Earth Syst. Sci., 23, 1755–1768, https://doi.org/10.5194/nhess-23-1755-2023, https://doi.org/10.5194/nhess-23-1755-2023, 2023
Short summary
Short summary
This paper introduces a digital twin fire model using machine learning techniques to improve the efficiency of global wildfire predictions. The proposed model also manages to efficiently adjust the prediction results thanks to data assimilation techniques. The proposed digital twin runs 500 times faster than the current state-of-the-art physics-based model.
Elisabeth D. Hafner, Frank Techel, Rodrigo Caye Daudt, Jan Dirk Wegner, Konrad Schindler, and Yves Bühler
EGUsphere, https://doi.org/10.5194/egusphere-2023-586, https://doi.org/10.5194/egusphere-2023-586, 2023
Short summary
Short summary
Oftentimes when objective measurements are not possible, human estimates are used instead. In our study, we investigate the reproducibility of human judgement for size estimates, the mappings of avalanches from oblique photographs and remotely-sensed imagery. The variability that we found in those estimates is worth considering as it may influence results and should be kept in mind for several applications.
Abby Morgan, Pascal Haegeli, Henry Finn, and Patrick Mair
Nat. Hazards Earth Syst. Sci., 23, 1719–1742, https://doi.org/10.5194/nhess-23-1719-2023, https://doi.org/10.5194/nhess-23-1719-2023, 2023
Short summary
Short summary
The avalanche danger scale is a critical component for communicating the severity of avalanche hazard conditions to the public. We examine how backcountry recreationists in North America understand and use the danger scale for planning trips into the backcountry. Our results provide an important user perspective on the strengths and weaknesses of the existing scale and highlight opportunities for future improvements.
Wei Yang, Zhongyan Wang, Baosheng An, Yingying Chen, Chuanxi Zhao, Chenhui Li, Yongjie Wang, Weicai Wang, Jiule Li, Guangjian Wu, Lin Bai, Fan Zhang, and Tandong Yao
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2023-38, https://doi.org/10.5194/nhess-2023-38, 2023
Revised manuscript accepted for NHESS
Short summary
Short summary
We present the structure and performance of the early warning system (EWS) for glacier collapse and river blockages in the southeastern Tibetan Plateau. The EWS warned of three collapse-river blockage chain events and seven small-scale events. The volume and location of the collapses and the percentage of ice content influenced the velocities of debris flows. Such a study is helpful for understanding the mechanism of glacier hazards and for establishing similar EWSs in other high-risk regions.
Alba Marquez Torres, Giovanni Signorello, Sudeshna Kumar, Greta Adamo, Ferdinando Villa, and Stefano Balbi
EGUsphere, https://doi.org/10.5194/egusphere-2023-138, https://doi.org/10.5194/egusphere-2023-138, 2023
Short summary
Short summary
Only by mapping fire risks can we manage our forest and prevent fires under current and future climate conditions. We have developed a fire risk map based on k.LAB: an AI-powered and open-source software integrating multidisciplinary knowledge in near real-time. Through an easy-to-use web application, we have modelled the hazard with 84 % accuracy for Sicily, a representative Mediterranean region. The fire risk analysis reveals 45 % of vulnerable areas are at high probability of danger in 2050.
Adrián Cardíl, Victor M. Tapia, Santiago Monedero, Tomás Quiñones, Kerryn Little, Cathelijne R. Stoof, Joaquín Ramirez, and Sergio de-Miguel
Nat. Hazards Earth Syst. Sci., 23, 361–373, https://doi.org/10.5194/nhess-23-361-2023, https://doi.org/10.5194/nhess-23-361-2023, 2023
Short summary
Short summary
This study aims to unravel large-fire behavior in northwest Europe, a temperate region with a projected increase in wildfire risk. We propose a new method to identify wildfire rate of spread from satellites because it is important to know periods of elevated fire risk for suppression methods and land management. Results indicate that there is a peak in the area burned and rate of spread in the months of March and April, and there are significant differences for forest-type land covers.
Liam S. Taylor, Duncan J. Quincey, and Mark W. Smith
Nat. Hazards Earth Syst. Sci., 23, 329–341, https://doi.org/10.5194/nhess-23-329-2023, https://doi.org/10.5194/nhess-23-329-2023, 2023
Short summary
Short summary
Hazards from glaciers are becoming more likely as the climate warms, which poses a threat to communities living beneath them. We have developed a new camera system which can capture regular, high-quality 3D models to monitor small changes in glaciers which could be indicative of a future hazard. This system is far cheaper than more typical camera sensors yet produces very similar quality data. We suggest that deploying these cameras near glaciers could assist in warning communities of hazards.
Bastian Bergfeld, Alec van Herwijnen, Grégoire Bobillier, Philipp L. Rosendahl, Philipp Weißgraeber, Valentin Adam, Jürg Dual, and Jürg Schweizer
Nat. Hazards Earth Syst. Sci., 23, 293–315, https://doi.org/10.5194/nhess-23-293-2023, https://doi.org/10.5194/nhess-23-293-2023, 2023
Short summary
Short summary
For a slab avalanche to release, the snowpack must facilitate crack propagation over large distances. Field measurements on crack propagation at this scale are very scarce. We performed a series of experiments, up to 10 m long, over a period of 10 weeks. Beside the temporal evolution of the mechanical properties of the snowpack, we found that crack speeds were highest for tests resulting in full propagation. Based on these findings, an index for self-sustained crack propagation is proposed.
Sigrid Jørgensen Bakke, Niko Wanders, Karin van der Wiel, and Lena Merete Tallaksen
Nat. Hazards Earth Syst. Sci., 23, 65–89, https://doi.org/10.5194/nhess-23-65-2023, https://doi.org/10.5194/nhess-23-65-2023, 2023
Short summary
Short summary
In this study, we developed a machine learning model to identify dominant controls of wildfire in Fennoscandia and produce monthly fire danger probability maps. The dominant control was shallow-soil water anomaly, followed by air temperature and deep soil water. The model proved skilful with a similar performance as the existing Canadian Forest Fire Weather Index (FWI). We highlight the benefit of using data-driven models jointly with other fire models to improve fire monitoring and prediction.
Yi Victor Wang and Antonia Sebastian
Nat. Hazards Earth Syst. Sci., 22, 4103–4118, https://doi.org/10.5194/nhess-22-4103-2022, https://doi.org/10.5194/nhess-22-4103-2022, 2022
Short summary
Short summary
In this article, we propose an equivalent hazard magnitude scale and a method to evaluate and compare the strengths of natural hazard events across different hazard types, including earthquakes, tsunamis, floods, droughts, forest fires, tornadoes, cold waves, heat waves, and tropical cyclones. With our method, we determine that both the February 2021 North American cold wave event and Hurricane Harvey in 2017 were equivalent to a magnitude 7.5 earthquake in hazard strength.
Michael A. Storey and Owen F. Price
Nat. Hazards Earth Syst. Sci., 22, 4039–4062, https://doi.org/10.5194/nhess-22-4039-2022, https://doi.org/10.5194/nhess-22-4039-2022, 2022
Short summary
Short summary
Models are needed to understand and predict pollutant output from forest fires so fire agencies can reduce smoke-related risks to human health. We modelled air quality (PM2.5) based on fire area and weather variables. We found fire area and boundary layer height were influential on predictions, with distance, temperature, wind speed and relative humidity also important. The models predicted reasonably accurately in comparison to other existing methods but would benefit from further development.
Ana C. L. Sá, Bruno Aparicio, Akli Benali, Chiara Bruni, Michele Salis, Fábio Silva, Martinho Marta-Almeida, Susana Pereira, Alfredo Rocha, and José Pereira
Nat. Hazards Earth Syst. Sci., 22, 3917–3938, https://doi.org/10.5194/nhess-22-3917-2022, https://doi.org/10.5194/nhess-22-3917-2022, 2022
Short summary
Short summary
Assessing landscape wildfire connectivity supported by wildfire spread simulations can improve fire hazard assessment and fuel management plans. Weather severity determines the degree of fuel patch connectivity and thus the potential to spread large and intense wildfires. Mapping highly connected patches in the landscape highlights patch candidates for prior fuel treatments, which ultimately will contribute to creating fire-resilient Mediterranean landscapes.
Simon K. Allen, Ashim Sattar, Owen King, Guoqing Zhang, Atanu Bhattacharya, Tandong Yao, and Tobias Bolch
Nat. Hazards Earth Syst. Sci., 22, 3765–3785, https://doi.org/10.5194/nhess-22-3765-2022, https://doi.org/10.5194/nhess-22-3765-2022, 2022
Short summary
Short summary
This study demonstrates how the threat of a very large outburst from a future lake can be feasibly assessed alongside that from current lakes to inform disaster risk management within a transboundary basin between Tibet and Nepal. Results show that engineering measures and early warning systems would need to be coupled with effective land use zoning and programmes to strengthen local response capacities in order to effectively reduce the risk associated with current and future outburst events.
Markéta Součková, Roman Juras, Kryštof Dytrt, Vojtěch Moravec, Johanna Ruth Blöcher, and Martin Hanel
Nat. Hazards Earth Syst. Sci., 22, 3501–3525, https://doi.org/10.5194/nhess-22-3501-2022, https://doi.org/10.5194/nhess-22-3501-2022, 2022
Short summary
Short summary
Avalanches are natural hazards that threaten people and infrastructure. With climate change, avalanche activity is changing. We analysed the change in frequency and size of avalanches in the Krkonoše Mountains, Czechia, and detected important variables with machine learning tools from 1979–2020. Wet avalanches in February and March have increased, and slab avalanches have decreased and become smaller. The identified variables and their threshold levels may help in avalanche decision-making.
Annalie Dorph, Erica Marshall, Kate A. Parkins, and Trent D. Penman
Nat. Hazards Earth Syst. Sci., 22, 3487–3499, https://doi.org/10.5194/nhess-22-3487-2022, https://doi.org/10.5194/nhess-22-3487-2022, 2022
Short summary
Short summary
Wildfire spatial patterns are determined by fire ignition sources and vegetation fuel moisture. Fire ignitions can be mediated by humans (owing to proximity to human infrastructure) or caused by lightning (owing to fuel moisture, average annual rainfall and local weather). When moisture in dead vegetation is below 20 % the probability of a wildfire increases. The results of this research enable accurate spatial mapping of ignition probability to aid fire suppression efforts and future research.
John Sykes, Pascal Haegeli, and Yves Bühler
Nat. Hazards Earth Syst. Sci., 22, 3247–3270, https://doi.org/10.5194/nhess-22-3247-2022, https://doi.org/10.5194/nhess-22-3247-2022, 2022
Short summary
Short summary
Automated snow avalanche terrain mapping provides an efficient method for large-scale assessment of avalanche hazards, which informs risk management decisions for transportation and recreation. This research reduces the cost of developing avalanche terrain maps by using satellite imagery and open-source software as well as improving performance in forested terrain. The research relies on local expertise to evaluate accuracy, so the methods are broadly applicable in mountainous regions worldwide.
Ivana Čavlina Tomašević, Kevin K. W. Cheung, Višnjica Vučetić, Paul Fox-Hughes, Kristian Horvath, Maja Telišman Prtenjak, Paul J. Beggs, Barbara Malečić, and Velimir Milić
Nat. Hazards Earth Syst. Sci., 22, 3143–3165, https://doi.org/10.5194/nhess-22-3143-2022, https://doi.org/10.5194/nhess-22-3143-2022, 2022
Short summary
Short summary
One of the most severe and impactful urban wildfire events in Croatian history has been reconstructed and analyzed. The study identified some important meteorological influences related to the event: the synoptic conditions of the Azores anticyclone, cold front, and upper-level shortwave trough all led to the highest fire weather index in 2017. A low-level jet, locally known as bura wind that can be explained by hydraulic jump theory, was the dynamic trigger of the event.
Adam Emmer, Simon K. Allen, Mark Carey, Holger Frey, Christian Huggel, Oliver Korup, Martin Mergili, Ashim Sattar, Georg Veh, Thomas Y. Chen, Simon J. Cook, Mariana Correas-Gonzalez, Soumik Das, Alejandro Diaz Moreno, Fabian Drenkhan, Melanie Fischer, Walter W. Immerzeel, Eñaut Izagirre, Ramesh Chandra Joshi, Ioannis Kougkoulos, Riamsara Kuyakanon Knapp, Dongfeng Li, Ulfat Majeed, Stephanie Matti, Holly Moulton, Faezeh Nick, Valentine Piroton, Irfan Rashid, Masoom Reza, Anderson Ribeiro de Figueiredo, Christian Riveros, Finu Shrestha, Milan Shrestha, Jakob Steiner, Noah Walker-Crawford, Joanne L. Wood, and Jacob C. Yde
Nat. Hazards Earth Syst. Sci., 22, 3041–3061, https://doi.org/10.5194/nhess-22-3041-2022, https://doi.org/10.5194/nhess-22-3041-2022, 2022
Short summary
Short summary
Glacial lake outburst floods (GLOFs) have attracted increased research attention recently. In this work, we review GLOF research papers published between 2017 and 2021 and complement the analysis with research community insights gained from the 2021 GLOF conference we organized. The transdisciplinary character of the conference together with broad geographical coverage allowed us to identify progress, trends and challenges in GLOF research and outline future research needs and directions.
Fátima Arrogante-Funes, Inmaculada Aguado, and Emilio Chuvieco
Nat. Hazards Earth Syst. Sci., 22, 2981–3003, https://doi.org/10.5194/nhess-22-2981-2022, https://doi.org/10.5194/nhess-22-2981-2022, 2022
Short summary
Short summary
We show that ecological value might be reduced by 50 % due to fire perturbation in ecosystems that have not developed in the presence of fire and/or that present changes in the fire regime. The biomes most affected are tropical and subtropical forests, tundra, and mangroves. Integration of biotic and abiotic fire regime and regeneration factors resulted in a powerful way to map ecological vulnerability to fire and develop assessments to generate adaptation plans of management in forest masses.
Aubrey Miller, Pascal Sirguey, Simon Morris, Perry Bartelt, Nicolas Cullen, Todd Redpath, Kevin Thompson, and Yves Bühler
Nat. Hazards Earth Syst. Sci., 22, 2673–2701, https://doi.org/10.5194/nhess-22-2673-2022, https://doi.org/10.5194/nhess-22-2673-2022, 2022
Short summary
Short summary
Natural hazard modelers simulate mass movements to better anticipate the risk to people and infrastructure. These simulations require accurate digital elevation models. We test the sensitivity of a well-established snow avalanche model (RAMMS) to the source and spatial resolution of the elevation model. We find key differences in the digital representation of terrain greatly affect the simulated avalanche results, with implications for hazard planning.
Kathryn C. Fisher, Pascal Haegeli, and Patrick Mair
Nat. Hazards Earth Syst. Sci., 22, 1973–2000, https://doi.org/10.5194/nhess-22-1973-2022, https://doi.org/10.5194/nhess-22-1973-2022, 2022
Short summary
Short summary
Avalanche bulletins include travel and terrain statements to provide recreationists with tangible guidance about how to apply the hazard information. We examined which bulletin users pay attention to these statements, what determines their usefulness, and how they could be improved. Our study shows that reducing jargon and adding simple explanations can significantly improve the usefulness of the statements for users with lower levels of avalanche awareness education who depend on this advice.
Cristina Pérez-Guillén, Frank Techel, Martin Hendrick, Michele Volpi, Alec van Herwijnen, Tasko Olevski, Guillaume Obozinski, Fernando Pérez-Cruz, and Jürg Schweizer
Nat. Hazards Earth Syst. Sci., 22, 2031–2056, https://doi.org/10.5194/nhess-22-2031-2022, https://doi.org/10.5194/nhess-22-2031-2022, 2022
Short summary
Short summary
A fully data-driven approach to predicting the danger level for dry-snow avalanche conditions in Switzerland was developed. Two classifiers were trained using a large database of meteorological data, snow cover simulations, and danger levels. The models performed well throughout the Swiss Alps, reaching a performance similar to the current experience-based avalanche forecasts. This approach shows the potential to be a valuable supplementary decision support tool for assessing avalanche hazard.
Frank Techel, Stephanie Mayer, Cristina Pérez-Guillén, Günter Schmudlach, and Kurt Winkler
Nat. Hazards Earth Syst. Sci., 22, 1911–1930, https://doi.org/10.5194/nhess-22-1911-2022, https://doi.org/10.5194/nhess-22-1911-2022, 2022
Short summary
Short summary
Can the resolution of forecasts of avalanche danger be increased by using a combination of absolute and comparative judgments? Using 5 years of Swiss avalanche forecasts, we show that, on average, sub-levels assigned to a danger level reflect the expected increase in the number of locations with poor snow stability and in the number and size of avalanches with increasing forecast sub-level.
Yves Bühler, Peter Bebi, Marc Christen, Stefan Margreth, Lukas Stoffel, Andreas Stoffel, Christoph Marty, Gregor Schmucki, Andrin Caviezel, Roderick Kühne, Stephan Wohlwend, and Perry Bartelt
Nat. Hazards Earth Syst. Sci., 22, 1825–1843, https://doi.org/10.5194/nhess-22-1825-2022, https://doi.org/10.5194/nhess-22-1825-2022, 2022
Short summary
Short summary
To calculate and visualize the potential avalanche hazard, we develop a method that automatically and efficiently pinpoints avalanche starting zones and simulate their runout for the entire canton of Grisons. The maps produced in this way highlight areas that could be endangered by avalanches and are extremely useful in multiple applications for the cantonal authorities, including the planning of new infrastructure, making alpine regions more safe.
Tero M. Partanen and Mikhail Sofiev
Nat. Hazards Earth Syst. Sci., 22, 1335–1346, https://doi.org/10.5194/nhess-22-1335-2022, https://doi.org/10.5194/nhess-22-1335-2022, 2022
Short summary
Short summary
The presented method aims to forecast regional wildfire-emitted radiative power in a time-dependent manner several days in advance. The temporal fire radiative power can be converted to an emission production rate, which can be implemented in air quality forecasting simulations. It is shown that in areas with a high incidence of wildfires, the fire radiative power is quite predictable, but otherwise it is not.
Christos Bountzouklis, Dennis M. Fox, and Elena Di Bernardino
Nat. Hazards Earth Syst. Sci., 22, 1181–1200, https://doi.org/10.5194/nhess-22-1181-2022, https://doi.org/10.5194/nhess-22-1181-2022, 2022
Short summary
Short summary
The study addresses the evolution of burned areas in southeastern France from 1970 to 2019 through the scope of a firefighting policy shift in 1994 that resulted in a significant decrease in the burned area. Regions with large fires were particularly impacted, whereas, in other areas, the fires remained frequent and occurred closer to built-up zones. Environmental characteristics such as south-facing slopes and low vegetation (bushes) are increasingly associated with burned areas.
Louis Védrine, Xingyue Li, and Johan Gaume
Nat. Hazards Earth Syst. Sci., 22, 1015–1028, https://doi.org/10.5194/nhess-22-1015-2022, https://doi.org/10.5194/nhess-22-1015-2022, 2022
Short summary
Short summary
This study investigates how forests affect the behaviour of snow avalanches through the evaluation of the amount of snow stopped by the trees and the analysis of energy dissipation mechanisms. Different avalanche features and tree configurations have been examined, leading to the proposal of a unified law for the detrained snow mass. Outcomes from this study can be directly implemented in operational models for avalanche risk assessment and contribute to improved forest management strategy.
Matthew C. Perry, Emilie Vanvyve, Richard A. Betts, and Erika J. Palin
Nat. Hazards Earth Syst. Sci., 22, 559–575, https://doi.org/10.5194/nhess-22-559-2022, https://doi.org/10.5194/nhess-22-559-2022, 2022
Short summary
Short summary
In the past, wildfires in the UK have occurred mainly in spring, with occasional events during hot, dry summers. Climate models predict a large future increase in hazardous fire weather conditions in summer. Wildfire can be considered an
emergent riskfor the UK, as past events have not had widespread major impacts, but this could change. The large increase in risk between the 2 °C and 4 °C levels of global warming highlights the importance of global efforts to keep warming below 2 °C.
Philip A. Ebert and Peter Milne
Nat. Hazards Earth Syst. Sci., 22, 539–557, https://doi.org/10.5194/nhess-22-539-2022, https://doi.org/10.5194/nhess-22-539-2022, 2022
Short summary
Short summary
There is no consensus about how to assess the quality of binary (yes or no) rare and severe event forecasts, i.e. forecasts involving natural hazards like tornadoes or avalanches. We offer a comprehensive overview of the challenges we face when making such an assessment and provide a critical review of existing solutions. We argue against all but one existing solution to assess the quality of such forecasts and present practical consequences to improve forecasting services.
Jacques Mourey, Pascal Lacroix, Pierre-Allain Duvillard, Guilhem Marsy, Marco Marcer, Emmanuel Malet, and Ludovic Ravanel
Nat. Hazards Earth Syst. Sci., 22, 445–460, https://doi.org/10.5194/nhess-22-445-2022, https://doi.org/10.5194/nhess-22-445-2022, 2022
Short summary
Short summary
More frequent rockfalls in high alpine environments due to climate change are a growing threat to mountaineers. This hazard is particularly important on the classic route up Mont Blanc. Our results show that rockfalls are most frequent during snowmelt periods and the warmest hours of the day, and that mountaineers do not adapt to the local rockfall hazard when planning their ascent. Disseminating the knowledge acquired from our study caused management measures to be implemented for the route.
Tomàs Artés, Marc Castellnou, Tracy Houston Durrant, and Jesús San-Miguel
Nat. Hazards Earth Syst. Sci., 22, 509–522, https://doi.org/10.5194/nhess-22-509-2022, https://doi.org/10.5194/nhess-22-509-2022, 2022
Short summary
Short summary
During the last 20 years extreme wildfires have challenged firefighting capabilities. Several fire danger indices are routinely used by firefighting services but are not suited to forecast convective extreme wildfire behaviour at the global scale. This article proposes a new fire danger index for deep moist convection, the extreme-fire behaviour index (EFBI), based on the analysis of the vertical profiles of the atmosphere above wildfires to use along with traditional fire danger indices.
Veronika Hutter, Frank Techel, and Ross S. Purves
Nat. Hazards Earth Syst. Sci., 21, 3879–3897, https://doi.org/10.5194/nhess-21-3879-2021, https://doi.org/10.5194/nhess-21-3879-2021, 2021
Short summary
Short summary
How is avalanche danger described in public avalanche forecasts? We analyzed 6000 textual descriptions of avalanche danger in Switzerland, taking the perspective of the forecaster. Avalanche danger was described rather consistently, although the results highlight the difficulty of communicating conditions that are neither rare nor frequent, neither small nor large. The study may help to refine the ways in which avalanche danger could be communicated to the public.
Edilia Jaque Castillo, Alfonso Fernández, Rodrigo Fuentes Robles, and Carolina G. Ojeda
Nat. Hazards Earth Syst. Sci., 21, 3663–3678, https://doi.org/10.5194/nhess-21-3663-2021, https://doi.org/10.5194/nhess-21-3663-2021, 2021
Short summary
Short summary
Wildfires pose risks to lives and livelihoods in many regions of the world. Particularly in Chile's central-south region, climate change, widespread land use change, and urban growth tend to increase the likelihood of fire occurrence. Our work focused on the Concepción metropolitan area, where we developed a model using machine learning in order to map wildfire risks. We found that the interface between urban areas and forestry plantations presents the highest risks.
Alessandro Gattuso, Francesco Italiano, Giorgio Capasso, Antonino D'Alessandro, Fausto Grassa, Antonino Fabio Pisciotta, and Davide Romano
Nat. Hazards Earth Syst. Sci., 21, 3407–3419, https://doi.org/10.5194/nhess-21-3407-2021, https://doi.org/10.5194/nhess-21-3407-2021, 2021
Short summary
Short summary
Santa Barbara and Aragona are affected by mud volcanism with episodic hazardous paroxysm events. Two potentially hazardous paroxysm exposed surfaces of 0.12 and 0.20 km2 were elaborated with DSMs and with historical information on the paroxysms that occurred in the past. This paper, in the end, could be a useful tool for civil protection authorities in order to take appropriate risk mitigation measurements for exposed people and for monitoring activities.
Kathryn C. Fisher, Pascal Haegeli, and Patrick Mair
Nat. Hazards Earth Syst. Sci., 21, 3219–3242, https://doi.org/10.5194/nhess-21-3219-2021, https://doi.org/10.5194/nhess-21-3219-2021, 2021
Short summary
Short summary
Avalanche warning services publish condition reports to help backcountry recreationists make informed decisions about when and where to travel in avalanche terrain. We tested how different graphic representations of terrain information can affect users’ ability to interpret and apply the provided information. Our study shows that a combined presentation of aspect and elevation information is the most effective. These results can be used to improve avalanche risk communication products.
Jeffrey Katan and Liliana Perez
Nat. Hazards Earth Syst. Sci., 21, 3141–3160, https://doi.org/10.5194/nhess-21-3141-2021, https://doi.org/10.5194/nhess-21-3141-2021, 2021
Short summary
Short summary
Wildfires are an integral part of ecosystems worldwide, but they also pose a serious risk to human life and property. To further our understanding of wildfires and allow experimentation without recourse to live fires, this study presents an agent-based modelling approach to combine the complexity possible with physical models with the ease of computation of empirical models. Model calibration and validation show bottom-up simulation tracks the core elements of complexity of fire across scales.
Xiaowen Wang, Lin Liu, Yan Hu, Tonghua Wu, Lin Zhao, Qiao Liu, Rui Zhang, Bo Zhang, and Guoxiang Liu
Nat. Hazards Earth Syst. Sci., 21, 2791–2810, https://doi.org/10.5194/nhess-21-2791-2021, https://doi.org/10.5194/nhess-21-2791-2021, 2021
Short summary
Short summary
We characterized the multi-decadal geomorphic changes of a low-angle valley glacier in the East Kunlun Mountains and assessed the detachment hazard influence. The observations reveal a slow surge-like dynamic pattern of the glacier tongue. The maximum runout distances of two endmember avalanche scenarios were presented. This study provides a reference to evaluate the runout hazards of low-angle mountain glaciers prone to detachment.
Xuguo Shi, Shaocheng Zhang, Mi Jiang, Yuanyuan Pei, Tengteng Qu, Jinhu Xu, and Chen Yang
Nat. Hazards Earth Syst. Sci., 21, 2285–2297, https://doi.org/10.5194/nhess-21-2285-2021, https://doi.org/10.5194/nhess-21-2285-2021, 2021
Short summary
Short summary
We mapped the subsidence of Wuhan using Sentinel-1 synthetic aperture radar (SAR) images acquired during 2015–2019. Overall subsidence coincides with the distribution of engineered geological regions with soft soils, while the subsidence centers shifted with urban construction activities. Correlation between karst subsidence and concentrated rainfall was identified in Qingling–Jiangdi. Results indicate that interferometric SAR can be employed to routinely monitor and identify geohazards.
Mirlan Daiyrov and Chiyuki Narama
Nat. Hazards Earth Syst. Sci., 21, 2245–2256, https://doi.org/10.5194/nhess-21-2245-2021, https://doi.org/10.5194/nhess-21-2245-2021, 2021
Short summary
Short summary
In the Teskey Range of the Tien Shan (Kyrgyz Republic), four outburst flood disasters from short-lived glacial lakes in 2006, 2008, 2013, and 2014 caused severe damages in the downstream part. Short-lived glacial lakes grow rapidly and drain within a few months, due to closure and opening of an outlet ice tunnel in an ice-cored moraine complex at the glacier front. We investigated how short-lived glacial lakes store and drain water over short periods based on field survey and satellite data.
Roberto Villalobos-Herrera, Emanuele Bevacqua, Andreia F. S. Ribeiro, Graeme Auld, Laura Crocetti, Bilyana Mircheva, Minh Ha, Jakob Zscheischler, and Carlo De Michele
Nat. Hazards Earth Syst. Sci., 21, 1867–1885, https://doi.org/10.5194/nhess-21-1867-2021, https://doi.org/10.5194/nhess-21-1867-2021, 2021
Short summary
Short summary
Climate hazards may be caused by events which have multiple drivers. Here we present a method to break down climate model biases in hazard indicators down to the bias caused by each driving variable. Using simplified fire and heat stress indicators driven by temperature and relative humidity as examples, we show how multivariate indicators may have complex biases and that the relationship between driving variables is a source of bias that must be considered in climate model bias corrections.
Kerstin Wegner, Florian Haas, Tobias Heckmann, Anne Mangeney, Virginie Durand, Nicolas Villeneuve, Philippe Kowalski, Aline Peltier, and Michael Becht
Nat. Hazards Earth Syst. Sci., 21, 1159–1177, https://doi.org/10.5194/nhess-21-1159-2021, https://doi.org/10.5194/nhess-21-1159-2021, 2021
Short summary
Short summary
In mountainous regions rockfall is a common geomorphic process. We selected four study sites that feature different rock types. High-resolution terrestrial laser scanning data were acquired to measure the block size and block shape (axial ratio) of rockfall particles on the scree deposits. Laser scanning data were also used to characterize the morphology of these landforms. Our results show that hill slope and rock particle properties govern rock particle runout in a complex manner.
Eszter Szűcs, Sándor Gönczy, István Bozsó, László Bányai, Alexandru Szakacs, Csilla Szárnya, and Viktor Wesztergom
Nat. Hazards Earth Syst. Sci., 21, 977–993, https://doi.org/10.5194/nhess-21-977-2021, https://doi.org/10.5194/nhess-21-977-2021, 2021
Short summary
Short summary
Sinkhole formation and post-collapse deformation in the Solotvyno salt mining area was studied where the salt dissolution due to water intrusion poses a significant risk. Based on a Sentinel-1 data set, remarkable surface deformation with a maximum rate of 5 cm/yr was revealed, and it was demonstrated that the deformation process has a linear characteristic although the mining activity was ended more than 10 years ago.
Geert Jan van Oldenborgh, Folmer Krikken, Sophie Lewis, Nicholas J. Leach, Flavio Lehner, Kate R. Saunders, Michiel van Weele, Karsten Haustein, Sihan Li, David Wallom, Sarah Sparrow, Julie Arrighi, Roop K. Singh, Maarten K. van Aalst, Sjoukje Y. Philip, Robert Vautard, and Friederike E. L. Otto
Nat. Hazards Earth Syst. Sci., 21, 941–960, https://doi.org/10.5194/nhess-21-941-2021, https://doi.org/10.5194/nhess-21-941-2021, 2021
Short summary
Short summary
Southeastern Australia suffered from disastrous bushfires during the 2019/20 fire season, raising the question whether these have become more likely due to climate change. We found no attributable trend in extreme annual or monthly low precipitation but a clear shift towards more extreme heat. However, this shift is underestimated by the models. Analysing fire weather directly, we found that the chance has increased by at least 30 %, but due to the underestimation it could well be higher.
Andrew R. Schauer, Jordy Hendrikx, Karl W. Birkeland, and Cary J. Mock
Nat. Hazards Earth Syst. Sci., 21, 757–774, https://doi.org/10.5194/nhess-21-757-2021, https://doi.org/10.5194/nhess-21-757-2021, 2021
Short summary
Short summary
Our research links upper atmospheric circulation patterns to a destructive and difficult-to-predict type of snow avalanche in the western United States. At each of our study sites, we find unique circulation patterns that tend to occur at the beginning of the winter season during years with major avalanche activity. We also find specific patterns that occur frequently in the days leading to major avalanche events. This work will enable practitioners to better anticipate these challenging events.
Erich Peitzsch, Jordy Hendrikx, Daniel Stahle, Gregory Pederson, Karl Birkeland, and Daniel Fagre
Nat. Hazards Earth Syst. Sci., 21, 533–557, https://doi.org/10.5194/nhess-21-533-2021, https://doi.org/10.5194/nhess-21-533-2021, 2021
Short summary
Short summary
We sampled 647 trees from 12 avalanche paths to investigate large snow avalanches over the past 400 years in the northern Rocky Mountains, USA. Sizable avalanches occur approximately every 3 years across the region. Our results emphasize the importance of sample size, scale, and spatial extent when reconstructing avalanche occurrence across a region. This work can be used for infrastructure planning and avalanche forecasting operations.
Simon Horton, Moses Towell, and Pascal Haegeli
Nat. Hazards Earth Syst. Sci., 20, 3551–3576, https://doi.org/10.5194/nhess-20-3551-2020, https://doi.org/10.5194/nhess-20-3551-2020, 2020
Short summary
Short summary
We investigate patterns in how avalanche forecasters characterize snow avalanche hazard with avalanche problem types. Decision tree analysis was used to investigate both physical influences based on weather and on snowpack variables and operational practices. The results highlight challenges with developing decision aids based on previous hazard assessments.
Dan K. Thompson and Kimberly Morrison
Nat. Hazards Earth Syst. Sci., 20, 3439–3454, https://doi.org/10.5194/nhess-20-3439-2020, https://doi.org/10.5194/nhess-20-3439-2020, 2020
Short summary
Short summary
We describe critically low relative humidity and high wind speeds above which only documented wildfires were seen to occur and where no agricultural fires were documented in southern Canada. We then applied these thresholds to the much larger satellite record from 2002–2018 to quantify regional differences in both the rate of observed burning and the number of days with critical weather conditions to sustain a wildfire in this grassland and agricultural region.
Cited articles
Alberg, A. J., Park, J. W., Hager, B. W., Brock, M. V., and Diener-West, M.: The use of “overall accuracy” to evaluate the validity of screening or diagnostic tests, J. Gen. Intern. Med., 19, 460–465, https://doi.org/10.1111/j.1525-1497.2004.30091.x, 2004.
Allen, C. D., Macalady, A. K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Rigling, A., Breshears, D. D., Hogg, E. H. (T.), Gonzalez, P., Fensham, R., Zhang, Z., Castro, J., Demidova, N., Lim, J. H., Allard, G., Running, S. W., Semerci, A., and Cobb, N.: A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests, For. Ecol. Manage., 259, 660–684, https://doi.org/10.1016/j.foreco.2009.09.001, 2010.
Amraoui, M., Pereira, M. G., Dacamara, C. C., and Calado, T. J.: Atmospheric conditions associated with extreme fire activity in the Western Mediterranean region, Sci. Total Environ., 524–525, 32–39, https://doi.org/10.1016/j.scitotenv.2015.04.032, 2015.
Araújo, C. S. P., Silva, I. A. C., Ippolito, M., and Almeida, C. D. G.: Evaluation of air temperature estimated by ERA5-Land reanalysis using surface data in Pernambuco, Brazil, Environ. Monit. Assess., 194, 381, https://doi.org/10.1007/s10661-022-10047-2, 2022.
Barros, A. M. G. and Pereira, J. M. C.: Wildfire selectivity for land cover type: Does size matter?, PLoS One, 9, https://doi.org/10.1371/journal.pone.0084760, 2014.
Beck, H. E., Zimmermann, N. E., McVicar, T. R., Vergopolan, N., Berg, A., and Wood, E. F.: Present and future köppen-geiger climate classification maps at 1-km resolution, Scientific Data, 5, 1–12, https://doi.org/10.1038/sdata.2018.214, 2018.
Bedia, J., Herrera, S., Gutiérrez, J. M., Zavala, G., Urbieta, I. R., and Moreno, J. M.: Sensitivity of fire weather index to different reanalysis products in the Iberian Peninsula, Nat. Hazards Earth Syst. Sci., 12, 699–708, https://doi.org/10.5194/nhess-12-699-2012, 2012.
Beighley, M. and Hyde, A. C.: Portugal Wildfire Management in a New Era: Assessing Fire Risks, Resources and Reforms, Beighley & Hyde (February), 52 pp., https://www.isa.ulisboa.pt/files/cef/pub/articles/2018-04/2018_Portugal_Wildfire_Management_in_a_New_Era_Engish.pdf (last access: 20 May 2021). 2018.
Benali, A., Russo, A., Sá, A. C. L., Pinto, R. M. S., Price, O., Koutsias, N., and Pereira, J. M. C.: Determining fire dates and locating ignition points with satellite data, Remote Sens., 8, 326-1-326-20, https://doi.org/10.3390/rs8040326, 2016.
Bergonse, R., Oliveira, S., Gonçalves, A., Nunes, S., DaCamara, C., and Zêzere, J. L.: Predicting burnt areas during the summer season in Portugal by combining wildfire susceptibility and spring meteorological conditions, Geomatics, Nat. Hazards Risk, 12, 1039–1057, https://doi.org/10.1080/19475705.2021.1909664, 2021.
Caetano, M., Igreja, C., Marcelino, F., and Costa, H.: Estatísticas e dinâmicas territoriais multiescala de Portugal Continental 1995–2007–2010 com base na Carta de Uso e Ocupação do Solo (COS), Relatório Técnico, Direção-Geral do Território (DGT), https://www.dgterritorio.gov.pt/sites/default/files/documentos-publicos/2017-6-7-14-51-10-609__RTC-60.pdf, (last access: 10 November 2022), 2017.
Calheiros, T., Nunes, J. P., and Pereira, M. G.: Recent evolution of spatial and temporal patterns of burnt areas and fire weather risk in the Iberian Peninsula, Agric. For. Meteorol., 287, 107923, https://doi.org/10.1016/J.AGRFORMET.2020.107923, 2020.
Calheiros, T., Pereira, M. G., and Nunes, J. P.: Assessing impacts of future climate change on extreme fire weather and pyro-regions in Iberian Peninsula, Sci. Total Environ., 754, 142233, https://doi.org/10.1016/j.scitotenv.2020.142233, 2021.
Carmo, M., Moreira, F., Casimiro, P., and Vaz, P.: Land use and topography influences on wildfire occurrence in northern Portugal, Landsc. Urban Plan., 100, 169–176, https://doi.org/10.1016/j.landurbplan.2010.11.017, 2011.
Carvalho, A., Flannigan, M. D., Logan, K., Miranda, A. I., and Borrego, C.: Fire activity in Portugal and its relationship to weather and the Canadian Fire Weather Index System, Int. J. Wildl. Fire, 17, 328–338, https://doi.org/10.1071/WF07014, 2008.
Cerasoli, S., Costa e Silva, F., and Silva, J. M. N.: Temporal dynamics of spectral bioindicators evidence biological and ecological differences among functional types in a cork oak open woodland, Int. J. Biometeorol., 60, 813–825, https://doi.org/10.1007/s00484-015-1075-x, 2016.
Chinita, M. J., Richardson, M., Teixeira, J., and Miranda, P. M. A.: Global mean frequency increases of daily and sub-daily heavy precipitation in ERA5, Environ. Res. Lett., 16, 074035, https://doi.org/10.1088/1748-9326/ac0caa, 2021.
Cohen, J.: A Coefficient of Agreement for Nominal Scales, Educ. Psychol. Meas., 20, 37–46, https://doi.org/10.1177/001316446002000104, 1960.
Congalton, R. G.: Accuracy assessment and validation of remotely sensed and other spatial information, Int. J. Wildl. Fire, 10, 321–328, https://doi.org/10.1071/wf01031, 2001.
Copernicus Climate Change Service (C3S): ERA5: Fifth generation of ECMWF atmospheric reanalyses of the global climate, Copernicus Clim. Chang. Serv. Clim. Data Store [data set], https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5, last access: 30 October 2020.
David, F. N. and Cramer, H.: Mathematical Methods of Statistics, Biometrika, 34, 374, https://doi.org/10.2307/2332454, 1947.
De Espindola, R. S., Luciano, E. M., and Audy, J. L. N.: An overview of the adoption of IT governance models and software process quality instruments at Brazil – Preliminary results of a survey, Proc. 42nd Annu. Hawaii Int. Conf. Syst. Sci. HICSS, 1–9, 5–8 January 2009, Big Island, Hawaii, USA, https://doi.org/10.1109/HICSS.2009.70, 2009.
De Groot, W. J.: Interpreting the Canadian Forest Fire Weather Index (FWI) System, Fourth Cent. Reg. Fire Weather Comm. Sci. Tech. Semin., Proceeding, 3–14, April 2, 1987, Winnipeg, Manitoba, Canada. The access to the document is available in https://cfs.nrcan.gc.ca/publications?id=23688 (last access: 17 December 2020), 1987.
Direção Geral do Território (DGT): Modelo Digital do Terreno (Resolução 50 m) – Portugal Continental, https://snig.dgterritorio.gov.pt/rndg/srv/por/catalog.search#/metadata/ba3f114f-51e2-4eaa-9f61-b8ade36b2378?tab=techinfo (last access: 18 January 2022), 2010.
Direção Geral do Território (DGT): Carta de Uso e Ocupação do Solo (COS) de Portugal Continental para 2018, dados.gov [data set], https://dados.gov.pt/pt/datasets/carta-de-uso-e-ocupacao-do-solo-2018/ (last access: 10 December 2020), 2019a.
Direção Geral do Território (DGT): Especificações técnicas da Carta de Uso e Ocupação do Solo (COS) de Portugal Continental para 2018, Relatório Técnico, Direção-Geral do Território [data set], https://geocatalogo.icnf.pt/catalogo_tema5.html (last access: 10 November 2022), 2019b.
Duane, A. and Brotons, L.: Synoptic weather conditions and changing fire regimes in a Mediterranean environment, Agric. For. Meteorol., 253–254, 190–202, https://doi.org/10.1016/j.agrformet.2018.02.014, 2018.
Espinosa, J., Palheiro, P., Loureiro, C., Ascoli, D., Esposito, A., and Fernandes, P. M.: Fire-severity mitigation by prescribed burning assessed from fire-treatment encounters in maritime pine stands, Can. J. For. Res., 49, 205–211, https://doi.org/10.1139/cjfr-2018-0263, 2019.
European Environment Agency (EEA): Copernicus Land Monitoring Service, Copernicus L. Monit. Serv. – EU-DEM, https://www.eea.europa.eu/data-and-maps/data/copernicus-land-monitoring-service-eu-dem, last access: 17 March 2021.
Fernandes, P. M.: Variation in the canadian fire weather index thresholds for increasingly larger fires in Portugal, Forests, 10, 838, https://doi.org/10.3390/f10100838, 2019.
Fernandes, P. M., Monteiro-Henriques, T., Guiomar, N., Loureiro, C., and Barros, A. M. G.: Bottom-Up Variables Govern Large-Fire Size in Portugal, Ecosystems, 19, 1362–1375, https://doi.org/10.1007/s10021-016-0010-2, 2016.
Fernandes, P. M., Guiomar, N., and Rossa, C. G.: Analysing eucalypt expansion in Portugal as a fire-regime modifier, Sci. Total Environ., 666, 79–88, https://doi.org/10.1016/j.scitotenv.2019.02.237, 2019.
Ferreira-Leite, F., Bento-Gonçalves, A., Vieira, A., Nunes, A., and Lourenço, L.: Incidence and recurrence of large forest fires in mainland Portugal, Nat. Hazards, 84, 1035–1053, https://doi.org/10.1007/s11069-016-2474-y, 2016.
Fonseca, T. F. and Duarte, J. C.: A silvicultural stand density model to control understory in maritime pine stands, IForest, 10, 829–836, https://doi.org/10.3832/ifor2173-010, 2017.
Frey, B. B.: The SAGE Encyclopedia of Educational Research, Measurement, and Evaluation, SAGE Encycl. Educ. Res. Meas. Eval., 1–4, https://doi.org/10.4135/9781506326139, 2018.
Gouveia, C. M., Bastos, A., Trigo, R. M., and DaCamara, C. C.: Drought impacts on vegetation in the pre- and post-fire events over Iberian Peninsula, Nat. Hazards Earth Syst. Sci., 12, 3123–3137, https://doi.org/10.5194/nhess-12-3123-2012, 2012.
Greenwood, P. E. and Nikulin, M. S.: A Guide to Chi-Squared Testing, 1–2, Wiley Series in Probability and Statistics, Wiley, ISBN 9780471557791, 1996.
Guo, J., Zhang, J., Yang, K., Liao, H., Zhang, S., Huang, K., Lv, Y., Shao, J., Yu, T., Tong, B., Li, J., Su, T., Yim, S. H. L., Stoffelen, A., Zhai, P., and Xu, X.: Investigation of near-global daytime boundary layer height using high-resolution radiosondes: first results and comparison with ERA5, MERRA-2, JRA-55, and NCEP-2 reanalyses, Atmos. Chem. Phys., 21, 17079–17097, https://doi.org/10.5194/acp-21-17079-2021, 2021.
Hassler, B. and Lauer, A.: Comparison of Reanalysis and Observational Precipitation Datasets Including ERA5 and WFDE5, Atmosphere, 12, 1462, https://doi.org/10.3390/atmos12111462, 2021.
Huai, B., Wang, J., Sun, W., Wang, Y., and Zhang, W.: Evaluation of the near-surface climate of the recent global atmospheric reanalysis for Qilian Mountains, Qinghai-Tibet Plateau, Atmos. Res., 250, 105401, https://doi.org/10.1016/j.atmosres.2020.105401, 2021.
Instituto da Conservação da Natureza e das Florestas (ICNF): 6.o Inventário Florestal Nacional (IFN6) – 2015 Relatório Final, 284 pp., https://www.icnf.pt/api/file/doc/c8cc40b3b7ec8541 (last access: 15 December 2020), 2019.
Instituto da Conservação da Natureza e das Florestas (ICNF): Territórios ardidos (Área ardida entre 1975 e 2021), ICNF [data set], https://geocatalogo.icnf.pt/catalogo_tema5.html, last access: 14 December 2020.
Instituto Português do Mar e da Atmosfera (IPMA): FWI, índice perigo de incêndio, https://www.ipma.pt/pt/riscoincendio/fwi/, last access: 14 November 2022.
Jimenez-Ruano, A., Rodrigues, M., Jolly, W. M., and de la Riva, J.: The role of short-term weather conditions in temporal dynamics of fire regime features in mainland Spain, J. Environ. Manage., 241, 575–586, https://doi.org/10.1016/j.jenvman.2018.09.107, 2018.
Jones, N., de Graaff, J., Rodrigo, I., and Duarte, F.: Historical review of land use changes in Portugal (before and after EU integration in 1986) and their implications for land degradation and conservation, with a focus on Centro and Alentejo regions, Appl. Geogr., 31, 1036–1048, https://doi.org/10.1016/j.apgeog.2011.01.024, 2011.
Kanevski, M. and Pereira, M. G.: Local fractality: The case of forest fires in Portugal, Phys. A Stat. Mech. Appl., 479, 400–410, https://doi.org/10.1016/j.physa.2017.02.086, 2017.
Krebs P., Pezzatti G. B., Mazzoleni S., Talbot L. M., and Conedera M.: Fire regime: history and definition of a key concept in disturbance ecology, Theor. Biosci., 129, 53–69, https://doi.org/10.1007/S12064-010-0082-Z, 2010.
Landis, J. R. and Koch, G. G.: The Measurement of Observer Agreement for Categorical Data, Biometrics, 33, 159, https://doi.org/10.2307/2529310, 1977.
Leuenberger, M., Parente, J., Tonini, M., Pereira, M. G., and Kanevski, M.: Wildfire susceptibility mapping: Deterministic vs. stochastic approaches, Environ. Model. Softw., 101, 194–203, https://doi.org/10.1016/j.envsoft.2017.12.019, 2018.
Lloret, F., Calvo, E., Pons, X., and Díaz-Delgado, R.: Wildfires and Landscape Patterns in the Eastern Iberian Peninsula, Landsc. Ecol., 17, 745–759, https://doi.org/10.1023/A:1022966930861, 2002.
McHugh, M. L.: Lessons in biostatistics interrater reliability: the kappa statistic, Biochem. Medica, 22, 276–282, https://hrcak.srce.hr/89395 (last access: 5 January 2022), 2012.
Meneses, B. M., Reis, E., and Reis, R.: Assessment of the recurrence interval of wildfires in mainland portugal and the identification of affected luc patterns, J. Maps, 14, 282–292, https://doi.org/10.1080/17445647.2018.1454351, 2018a.
Meneses, B. M., Reis, E., Vale, M. J., and Reis, R.: Modelling land use and land cover changes in Portugal: A multi-scale and multi-temporal approach, Finisterra, 53, 3–26, https://doi.org/10.18055/finis12258, 2018b.
Moreira, F., Viedma, O., Arianoutsou, M., Curt, T., Koutsias, N., Rigolot, E., Barbati, A., Corona, P., Vaz, P., Xanthopoulos, G., and Mouillot, F.: Landscape–wildfire interactions in southern Europe: Implications for landscape management, J. Environ. Manage., 92, 2389–2402, https://doi.org/10.1016/j.jenvman.2011.06.028, 2011.
Moreno, M. V., Conedera, M., Chuvieco, E., and Pezzatti, G. B.: Fire regime changes and major driving forces in Spain from 1968 to 2010, Environ. Sci. Policy, 37, 11–22, https://doi.org/10.1016/j.envsci.2013.08.005, 2014.
Muñoz-Sabater, J., Dutra, E., Agustí-Panareda, A., Albergel, C., Arduini, G., Balsamo, G., Boussetta, S., Choulga, M., Harrigan, S., Hersbach, H., Martens, B., Miralles, D. G., Piles, M., Rodríguez-Fernández, N. J., Zsoter, E., Buontempo, C., and Thépaut, J.-N.: ERA5-Land: a state-of-the-art global reanalysis dataset for land applications, Earth Syst. Sci. Data, 13, 4349–4383, https://doi.org/10.5194/essd-13-4349-2021, 2021.
National Wildfire Coordinating Group (NCWG): Glossary of Wildland Fire Terminology, October, 2005, 189 pp., http://www.nwcg.gov/pms/pubs/glossary/pms205.pdf (last access: 13 January 2022), 2011.
Nogueira, M.: Inter-comparison of ERA-5, ERA-interim and GPCP rainfall over the last 40 years: Process-based analysis of systematic and random differences, J. Hydrol., 583, 124632, https://doi.org/10.1016/j.jhydrol.2020.124632, 2020.
Nunes, A. N.: Regional variability and driving forces behind forest fires in Portugal an overview of the last three decades (1980–2009), Appl. Geogr., 34, 576–586, https://doi.org/10.1016/j.apgeog.2012.03.002, 2012.
Nunes, A. N., Lourenço, L., and Meira, A. C. C.: Exploring spatial patterns and drivers of forest fires in Portugal (1980–2014), Sci. Total Environ., 573, 1190–1202, https://doi.org/10.1016/j.scitotenv.2016.03.121, 2016.
Oliveira, T. M., Guiomar, N., Baptista, F. O., Pereira, J. M. C., and Claro, J.: Is Portugal’s forest transition going up in smoke?, Land Use Policy, 66, 214–226, https://doi.org/10.1016/j.landusepol.2017.04.046, 2017.
Parente, J. and Pereira, M. G.: Structural fire risk: The case of Portugal, Sci. Total Environ., 573, 883–893, https://doi.org/10.1016/j.scitotenv.2016.08.164, 2016.
Parente, J., Pereira, M. G., and Tonini, M.: Space-time clustering analysis of wildfires: The influence of dataset characteristics, fire prevention policy decisions, weather and climate, Sci. Total Environ., 559, 151–165, https://doi.org/10.1016/j.scitotenv.2016.03.129, 2016.
Parente, J., Pereira, M. G., Amraoui, M., and Fischer, E. M.: Heat waves in Portugal: Current regime, changes in future climate and impacts on extreme wildfires, Sci. Total Environ., 631–632, 534–549, https://doi.org/10.1016/j.scitotenv.2018.03.044, 2018a.
Parente, J., Pereira, M. G., Amraoui, M., and Tedim, F.: Negligent and intentional fires in Portugal: Spatial distribution characterization, Sci. Total Environ., 624, 424–437, https://doi.org/10.1016/j.scitotenv.2017.12.013, 2018b.
Parente, J., Amraouia, M., Menezes, I., and Pereira, M. G.: Drought in Portugal: Current regime, comparison of indices and impacts on extreme wildfires, Sci. Total Environ., 685, 150–173, https://doi.org/10.1016/j.scitotenv.2019.05.298, 2019.
Pausas, J. G. and Fernández-Muñoz, S.: Fire regime changes in the Western Mediterranean Basin: From fuel-limited to drought-driven fire regime, Clim. Change, 110, 215–226, https://doi.org/10.1007/s10584-011-0060-6, 2012.
Pausas, J. G. and Vallejo, V. R.: The role of fire in European Mediterranean ecosystems, in Remote Sensing of Large Wildfires, Springer Berlin Heidelberg, Berlin, Heidelberg, 3–16, https://doi.org/10.1007/978-3-642-60164-4_2, 1999.
Pelosi, A., Terribile, F., D'Urso, G., and Chirico, G. B.: Comparison of ERA5-Land and UERRA MESCAN-SURFEX reanalysis data with spatially interpolated weather observations for the regional assessment of reference evapotranspiration, Water, 12, 1669, https://doi.org/10.3390/w12061669, 2020.
Pereira, J. S., Chaves, M. M., Caldeira, M. C., and Correia, A. V.: Water Availability and Productivity, Plant Growth and Climate Change, John Wiley & Sons, Ltd, Chap. 6, 118–145, https://doi.org/10.1002/9780470988695.ch6, 2007.
Pereira, M. G., Trigo, R. M., da Camara, C. C., Pereira, J. M. C., and Leite, S. M.: Synoptic patterns associated with large summer forest fires in Portugal, Agric. For. Meteorol., 129, 11–25, https://doi.org/10.1016/j.agrformet.2004.12.007, 2005.
Pereira, M. G., Malamud, B. D., Trigo, R. M., and Alves, P. I.: The history and characteristics of the 1980–2005 Portuguese rural fire database, Nat. Hazards Earth Syst. Sci., 11, 3343–3358, https://doi.org/10.5194/nhess-11-3343-2011, 2011.
Pereira, M. G., Aranha, J., and Amraoui, M.: Land cover fire proneness in Europe, For. Syst., 23, 598–610, 2014.
Pereira, M. G., Caramelo, L., Orozco, C. V., Costa, R., and Tonini, M.: Space-time clustering analysis performance of an aggregated dataset: The case of wildfires in Portugal, Environ. Model. Softw., 72, 239–249, https://doi.org/10.1016/j.envsoft.2015.05.016, 2015.
Rodrigues, M., Trigo, R. M., Vega-García, C., and Cardil, A.: Identifying large fire weather typologies in the Iberian Peninsula, Agric. For. Meteorol., 280, 107789, https://doi.org/10.1016/j.agrformet.2019.107789, 2020.
Romano, N. and Ursino, N.: Forest fire regime in a mediterranean ecosystem: Unraveling the mutual interrelations between rainfall seasonality, soil moisture, drought persistence, and biomass dynamics, Fire, 3, 1–20, https://doi.org/10.3390/fire3030049, 2020.
Ruffault, J., Curt, T., Martin-StPaul, N. K., Moron, V., and Trigo, R. M.: Extreme wildfire events are linked to global-change-type droughts in the northern Mediterranean, Nat. Hazards Earth Syst. Sci., 18, 847–856, https://doi.org/10.5194/nhess-18-847-2018, 2018.
Russo, A., Gouveia, C. M., Páscoa, P., DaCamara, C. C., Sousa, P. M., and Trigo, R. M.: Assessing the role of drought events on wildfires in the Iberian Peninsula, Agric. For. Meteorol., 237–238, 50–59, https://doi.org/10.1016/j.agrformet.2017.01.021, 2017.
San-Miguel-Ayanz, J., Durrant, T., Boca, R., Maianti, P., Liberta', G., Artes Vivancos, T., Jacome Felix Oom, D., Branco, A., De Rigo, D., Ferrari, D., Pfeiffer, H., Grecchi, R., Nuijten, D., and Leray, T.: Forest Fires in Europe, Middle East and North Africa, 2019, https://doi.org/10.2760/468688, ISBN 978-92-76-23209-4, 2020.
Scotto, M. G., Gouveia, S., Carvalho, A., Monteiro, A., Martins, V., Flannigan, M. D., San-Miguel-Ayanz, J., Miranda, A. I., and Borrego, C.: Area burned in Portugal over recent decades: An extreme value analysis, Int. J. Wildl. Fire, 23, 812–824, https://doi.org/10.1071/WF13104, 2014.
Sianturi, Y., Marjuki and Sartika, K.: Evaluation of ERA5 and MERRA2 reanalyses to estimate solar irradiance using ground observations over Indonesia region, AIP Conf. Proc., 2223, 020002 pp., https://doi.org/10.1063/5.0000854, 2020.
Silva, J. M. N., Moreno, M. V., Page, Y. Le, Oom, D., Bistinas, I., and Pereira, J. M. C.: Spatiotemporal trends of area burnt in the Iberian Peninsula, 1975–2013, Reg. Environ. Chang., 19, 515–527, 2019.
Sousa, P. M., Trigo, R. M., Pereira, M. G., Bedia, J., and Gutiérrez, J. M.: Different approaches to model future burnt area in the Iberian Peninsula, Agric. For. Meteorol., 202, 11–25, https://doi.org/10.1016/j.agrformet.2014.11.018, 2015.
Stamou, Z., Xystrakis, F., and Koutsias, N.: The role of fire as a long-term landscape modifier: Evidence from long-term fire observations (1922–2000) in Greece, Appl. Geogr., 74, 47–55, https://doi.org/10.1016/j.apgeog.2016.07.005, 2016.
Sun, G., Hu, Z., Ma, Y., Xie, Z., Sun, F., Wang, J., and Yang. S.: Analysis of Local Land Atmosphere Coupling Characteristics over Tibetan Plateau in the Dry and Rainy Seasons using Observational data and ERA5, Sci. Total Environ., 774, 145138, https://doi.org/10.1016/j.scitotenv.2021.145138, 2021.
Sutanto, S. J., Vitolo, C., Di Napoli, C., D'Andrea, M., and Van Lanen, H. A. J.: Heatwaves, droughts, and fires: Exploring compound and cascading dry hazards at the pan-European scale, Environ. Int., 134, 105276, https://doi.org/10.1016/j.envint.2019.105276, 2020.
Tarín-Carrasco, P., Augusto, S., Palacios-Peña, L., Ratola, N., and Jiménez-Guerrero, P.: Impact of large wildfires on PM10 levels and human mortality in Portugal, Nat. Hazards Earth Syst. Sci., 21, 2867–2880, https://doi.org/10.5194/nhess-21-2867-2021, 2021.
Telesca, L. and Pereira, M. G.: Time-clustering investigation of fire temporal fluctuations in Portugal, Nat. Hazards Earth Syst. Sci., 10, 661–666, https://doi.org/10.5194/nhess-10-661-2010, 2010.
The MathWorks Inc: Linkage, Agglomerative hierarchical cluster tree, Help Cent, https://www.mathworks.com/help/stats/linkage.html, last access: 15 November 2021.
Tonini, M., Parente, J., and Pereira, M. G.: Global assessment of rural–urban interface in Portugal related to land cover changes, Nat. Hazards Earth Syst. Sci., 18, 1647–1664, https://doi.org/10.5194/nhess-18-1647-2018, 2018.
Trigo, R. M., Pereira, J. M. C., Pereira, M. G., Mota, B., Calado, T. J., Dacamara, C. C., and Santo, F. E.: Atmospheric conditions associated with the exceptional fire season of 2003 in Portugal, Int. J. Climatol., 26, 1741–1757, https://doi.org/10.1002/joc.1333, 2006.
Trigo, R. M., Sousa, P. M., Pereira, M. G., Rasilla, D., and Gouveia, C. M.: Modelling wildfire activity in Iberia with different atmospheric circulation weather types, Int. J. Climatol., 36, 2761–2778, https://doi.org/10.1002/joc.3749, 2016.
Turco, M., Rosa-Cánovas, J. J., Bedia, J., Jerez, S., Montávez, J. P., Llasat, M. C., and Provenzale, A.: Exacerbated fires in Mediterranean Europe due to anthropogenic warming projected with non-stationary climate-fire models, Nat. Commun., 9, 1–9, https://doi.org/10.1038/s41467-018-06358-z, 2018.
Turco, M., Jerez, S., Augusto, S., Tarín-Carrasco, P., Ratola, N., Jiménez-Guerrero, P., and Trigo, R. M.: Climate drivers of the 2017 devastating fires in Portugal, Sci. Rep., 9, 3821, https://doi.org/10.1038/s41598-019-50281-2, 2019.
Urban, A., Di Napoli, C., Cloke, H. L., Kyselý, J., Pappenberger, F., Sera, F., Schneider, R., Vicedo-Cabrera, A. M., Acquaotta, F., Ragettli, M. S., Íñiguez, C., Tobias, A., Indermitte, E., Orru, H., Jaakkola, J. J. K., Ryti, N. R. I., Pascal, M., Huber, V., Schneider, A., de' Donato, F., Michelozzi, P., and Gasparrini, A.: Evaluation of the ERA5 reanalysis-based Universal Thermal Climate Index on mortality data in Europe, Environ. Res., 198, 111227, https://doi.org/10.1016/j.envres.2021.111227, 2021.
Van Wagner, C. and Pickett, T. L.: Equations and fortran IV program for the 1976 metric version of the forest fire weather index, Canadian Forestry Service, Petawawa Forest Experiment Station, Chalk River, Ontario, Information Report PS-X-58,19 p., https://cfs.nrcan.gc.ca/publications?id=23602 (last access: 11 December 2020), 1975.
Van Wagner, C. E.: Development and structure of the Canadian Forest Fire Weather Index system, Canadian Forestry Service, Headquarters, Ottawa. Forestry Technical Report 35, 35 p., https://cfs.nrcan.gc.ca/publications?id=19927 (last access: 11 December 2020), 1987.
Viegas, D. X., Bovio, G., Ferreira, A., Nosenzo, A., and Sol, B.: Comparative study of various methods of fire danger evaluation in southern Europe, Int. J. Wildland Fire, 9, 235–246, 1999.
Vieira, I., Russo, A., and Trigo, R. M.: Identifying local-scale weather forcing conditions favorable to generating Iberia’s largest fires, Forests, 11, 1–14, https://doi.org/10.3390/F11050547, 2020.
Vilar, L., Camia, A., San-Miguel-Ayanz, J., and Martín, M. P.: Modeling temporal changes in human-caused wildfires in Mediterranean Europe based on Land Use-Land Cover interfaces, For. Ecol. Manage., 378, 68–78, https://doi.org/10.1016/j.foreco.2016.07.020, 2016.
Whitlock, C., Higuera, P. E., McWethy, D. B., and Briles, C. E.: Paleoecological Perspectives on Fire Ecology: Revisiting the Fire-Regime Concept, Open Ecol. J., 3, 6–23, https://doi.org/10.2174/1874213001003020006, 2010.
Short summary
Fire weather indices are used to assess the effect of weather on wildfires. Fire weather risk was computed and combined with large wildfires in Portugal. Results revealed the influence of vegetation cover: municipalities with a prevalence of shrublands, located in eastern parts, burnt under less extreme conditions than those with higher forested areas, situated in coastal regions. These findings are a novelty for fire science in Portugal and should be considered for fire management.
Fire weather indices are used to assess the effect of weather on wildfires. Fire weather risk...
Altmetrics
Final-revised paper
Preprint