Articles | Volume 22, issue 4
https://doi.org/10.5194/nhess-22-1347-2022
© 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-22-1347-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Apr 2022
Research article |
| 14 Apr 2022
| 14 Apr 2022
Hotspots for warm and dry summers in Romania
Viorica Nagavciuc
Alfred Wegener Institute Helmholtz Center for Polar and Marine
Research, Paleoclimate Dynamics Group, Bremerhaven, Germany
Faculty of Forestry, Ştefan cel Mare University, Suceava, Romania
Patrick Scholz
Alfred Wegener Institute Helmholtz Center for Polar and Marine
Research, Paleoclimate Dynamics Group, Bremerhaven, Germany
Alfred Wegener Institute Helmholtz Center for Polar and Marine
Research, Paleoclimate Dynamics Group, Bremerhaven, Germany
Faculty of Forestry, Ştefan cel Mare University, Suceava, Romania
Emil Racovita Institute of Speleology, Romanian Academy, Cluj-Napoca,
Romania
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Preprint archived
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Our study reveals how a decline in autumn sea ice in the Barents-Kara Seas leads to severe winters in Europe. Using observational data, we illustrate that Arctic sea ice loss isn't just a local issue – it impacts harsh winter conditions globally. Current climate models struggle to reflect these effects accurately, indicating a need for more research. Gaining a more nuanced understanding of this relationship will enhance our climate predictions and preparation for future extremes.
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As the adverse impacts of hydrological extremes increase in many regions of the world, a better understanding of the drivers of changes in risk and impacts is essential for effective flood and drought risk management. We present a dataset containing data of paired events, i.e. two floods or two droughts that occurred in the same area. The dataset enables comparative analyses and allows detailed context-specific assessments. Additionally, it supports the testing of socio-hydrological models.
Pengyang Song, Dmitry Sidorenko, Patrick Scholz, Maik Thomas, and Gerrit Lohmann
Geosci. Model Dev., 16, 383–405, https://doi.org/10.5194/gmd-16-383-2023, https://doi.org/10.5194/gmd-16-383-2023, 2023
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Tides have essential effects on the ocean and climate. Most previous research applies parameterised tidal mixing to discuss their effects in models. By comparing the effect of a tidal mixing parameterisation and tidal forcing on the ocean state, we assess the advantages and disadvantages of the two methods. Our results show that tidal mixing in the North Pacific Ocean strongly affects the global thermohaline circulation. We also list some effects that are not considered in the parameterisation.
Jan Streffing, Dmitry Sidorenko, Tido Semmler, Lorenzo Zampieri, Patrick Scholz, Miguel Andrés-Martínez, Nikolay Koldunov, Thomas Rackow, Joakim Kjellsson, Helge Goessling, Marylou Athanase, Qiang Wang, Jan Hegewald, Dmitry V. Sein, Longjiang Mu, Uwe Fladrich, Dirk Barbi, Paul Gierz, Sergey Danilov, Stephan Juricke, Gerrit Lohmann, and Thomas Jung
Geosci. Model Dev., 15, 6399–6427, https://doi.org/10.5194/gmd-15-6399-2022, https://doi.org/10.5194/gmd-15-6399-2022, 2022
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We developed a new atmosphere–ocean coupled climate model, AWI-CM3. Our model is significantly more computationally efficient than its predecessors AWI-CM1 and AWI-CM2. We show that the model, although cheaper to run, provides results of similar quality when modeling the historic period from 1850 to 2014. We identify the remaining weaknesses to outline future work. Finally we preview an improved simulation where the reduction in computational cost has to be invested in higher model resolution.
Daniel Balting, Simon Michel, Viorica Nagavciuc, Gerhard Helle, Mandy Freund, Gerhard H. Schleser, David Steger, Gerrit Lohmann, and Monica Ionita
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2022-47, https://doi.org/10.5194/essd-2022-47, 2022
Preprint withdrawn
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Vapor pressure deficit is a key component of vegetation dynamics, soil science, meteorology, and soil science. In this study, we reconstruct the variability of the vapor pressure deficit in the past and examine the changes in future scenarios using climate models. In this way, past, present and future changes of the vapor pressure deficit can be detected locally, regionally, and continentally with higher statistical significance.
Patrick Scholz, Dmitry Sidorenko, Sergey Danilov, Qiang Wang, Nikolay Koldunov, Dmitry Sein, and Thomas Jung
Geosci. Model Dev., 15, 335–363, https://doi.org/10.5194/gmd-15-335-2022, https://doi.org/10.5194/gmd-15-335-2022, 2022
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Structured-mesh ocean models are still the most mature in terms of functionality due to their long development history. However, unstructured-mesh ocean models have acquired new features and caught up in their functionality. This paper continues the work by Scholz et al. (2019) of documenting the features available in FESOM2.0. It focuses on the following two aspects: (i) partial bottom cells and embedded sea ice and (ii) dealing with mixing parameterisations enabled by using the CVMix package.
Petru Cosmin Vaideanu, Mihai Dima, Monica Ionita, and Mirela Voiculescu
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2021-75, https://doi.org/10.5194/esd-2021-75, 2021
Revised manuscript not accepted
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Observing clouds and their properties is not straightforward, however, these are important for reducing climate models uncertainties. Ground-based observations are spatially limited while satellite data are accompanied by various artefacts. In this paper, we use corrected observational and state-of-the-art reanalysis cloud data to show that the recent evolution of total cloud cover on a global scale is linked to the Eastern Pacific and the Central Pacific El Niño–Southern Oscillation.
Monica Ionita and Viorica Nagavciuc
Nat. Hazards Earth Syst. Sci., 21, 1685–1701, https://doi.org/10.5194/nhess-21-1685-2021, https://doi.org/10.5194/nhess-21-1685-2021, 2021
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By analyzing the joint frequency of compound events (e.g., high temperatures and droughts), we show that the potential evapotranspiration and mean air temperature are becoming essential components for drought occurrence over Central Europe and the Mediterranean region. This, together with the projected increase in potential evapotranspiration under a warming climate, has significant implications concerning the future occurrence of drought events over these regions.
Aurel Perşoiu, Nenad Buzjak, Alexandru Onaca, Christos Pennos, Yorgos Sotiriadis, Monica Ionita, Stavros Zachariadis, Michael Styllas, Jure Kosutnik, Alexandru Hegyi, and Valerija Butorac
The Cryosphere, 15, 2383–2399, https://doi.org/10.5194/tc-15-2383-2021, https://doi.org/10.5194/tc-15-2383-2021, 2021
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Extreme precipitation events in summer 2019 led to catastrophic loss of cave and surface ice in SE Europe at levels unprecedented during the last century. The projected continuous warming and increase in precipitation extremes could pose an additional threat to glaciers in southern Europe, resulting in a potentially ice-free SE Europe by the middle of the next decade (2035 CE).
Daniel F. Balting, Monica Ionita, Martin Wegmann, Gerhard Helle, Gerhard H. Schleser, Norel Rimbu, Mandy B. Freund, Ingo Heinrich, Diana Caldarescu, and Gerrit Lohmann
Clim. Past, 17, 1005–1023, https://doi.org/10.5194/cp-17-1005-2021, https://doi.org/10.5194/cp-17-1005-2021, 2021
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To extend climate information back in time, we investigate the climate sensitivity of a δ18O network from tree rings, consisting of 26 European sites and covering the last 400 years. Our results suggest that the δ18O variability is associated with large-scale anomaly patterns that resemble those observed for the El Niño–Southern Oscillation. We conclude that the investigation of large-scale climate signals far beyond instrumental records can be done with a δ18O network derived from tree rings.
Carmen-Andreea Bădăluţă, Aurel Perșoiu, Monica Ionita, and Natalia Piotrowska
Clim. Past, 16, 2445–2458, https://doi.org/10.5194/cp-16-2445-2020, https://doi.org/10.5194/cp-16-2445-2020, 2020
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We present a reconstruction of summer temperature for the last millennium in east-central Europe that shows little summer temperature differences between the Medieval Warm Period and the Little Ice Age on centennial scales as well as the fact that well-expressed minima and maxima occurred synchronously with periods of low and high solar activity, respectively. Furthermore, summer temperatures fluctuated with a periodicity similar to that of the Atlantic Multidecadal Oscillation.
Sigrid J. Bakke, Monica Ionita, and Lena M. Tallaksen
Hydrol. Earth Syst. Sci., 24, 5621–5653, https://doi.org/10.5194/hess-24-5621-2020, https://doi.org/10.5194/hess-24-5621-2020, 2020
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This study provides an in-depth analysis of the 2018 northern European drought. Large parts of the region experienced 60-year record-breaking temperatures, linked to high-pressure systems and warm surrounding seas. Meteorological drought developed from May and, depending on local conditions, led to extreme low flows and groundwater drought in the following months. The 2018 event was unique in that it affected most of Fennoscandia as compared to previous droughts.
Monica Ionita, Viorica Nagavciuc, and Bin Guan
Hydrol. Earth Syst. Sci., 24, 5125–5147, https://doi.org/10.5194/hess-24-5125-2020, https://doi.org/10.5194/hess-24-5125-2020, 2020
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Analysis of the largest 10 floods in the lower Rhine, between 1817 and 2015, shows that all these extreme flood peaks have been preceded, up to 7 d in advance, by intense moisture transport from the tropical North Atlantic basin in the form of narrow bands also known as atmospheric rivers. The results presented in this study offer new insights regarding the importance of moisture transport as the driver of extreme flooding in the lower part of the Rhine catchment area.
Cited articles
Adamowski, K., Prokoph, A., and Adamowski, J.: Development of a new method of
wavelet aided trend detection and estimation, Hydrol. Process., 23,
2686–2696, https://doi.org/10.1002/hyp.7260, 2009.
Bădăluță, C.-A., Perșoiu, A., Ionita, M., Nagavciuc, V., and
Bistricean, P.-I.: Stable H and O isotope-based investigation of moisture
sources and their role in river and groundwater recharge in the NE
Carpathian Mountains, East-Central Europe, Isot. Environ. Healt. S.,
55, 1–18, https://doi.org/10.1080/10256016.2019.1588895, 2019.
Bakke, S. J., Ionita, M., and Tallaksen, L. M.: The 2018 northern European hydrological drought and its drivers in a historical perspective, Hydrol. Earth Syst. Sci., 24, 5621–5653, https://doi.org/10.5194/hess-24-5621-2020, 2020.
Balting, D. F., AghaKouchak, A., Lohmann, G., and Ionita, M.: Northern
Hemisphere drought risk in a warming climate, npj Clim. Atmos. Sci., 4,
61, https://doi.org/10.1038/s41612-021-00218-2, 2021.
Barriopedro, D., Fiscer, E. M., Luterbacher, J., Trigo, R. M., and
García-Herrera, R.: The Hot Summer of 2010: Map of Europe, Science,
332, 220–224, https://doi.org/10.1126/science.1201224, 2011.
Busuioc, A., Caian, M., Cheval, S., Bojariu, R., Boroneant, C., Baciu, M.,
and Dumitrescu, A.: Variabilitatea și schimbarea climei în
România, Pro Universitaria, București, 210 pp.,
ISBN 978-973-129-549-7, 2010.
Busuioc, A., Dobrinescu, A., Birsan, M. V., Dumitrescu, A., and Orzan, A.:
Spatial and temporal variability of climate extremes in Romania and
associated large-scale mechanisms, Int. J. Climatol., 35, 1278–1300,
https://doi.org/10.1002/joc.4054, 2015.
Chelcea, S., Ionita, M., and Adler, M.-J.: Identification of dry periods in
the dobrogea region, in: Civil and Environmental Engineering: Concepts, Methodologies, Tools, and Applications, chap. 12,
3
IRMA, IGI Global, 324–330
https://doi.org/10.4018/978-1-4666-9619-8.ch012, 2015.
Chen, Y. and Li, Y.: An Inter-comparison of Three Heat Wave Types in China
during 1961–2010: Observed Basic Features and Linear Trends, Sci. Rep.-UK,
7, 2–11, https://doi.org/10.1038/srep45619, 2017.
Christidis, N., Jones, G. S., and Stott, P. A.: Dramatically increasing
chance of extremely hot summers since the 2003 European heatwave, Nat. Clim.
Change, 5, 46–50, https://doi.org/10.1038/nclimate2468, 2015.
Cornes, R. C., van der Schrier, G., van den Besselaar, E. J. M., and Jones, P. D.: An Ensemble Version of the E-OBS Temperature and Precipitation Data Sets, J. Geophys. Res.-Atmos., 123, 9391–9409, https://doi.org/10.1029/2017JD028200, 2018.
Croitoru, A. E. and Piticar, A.: Changes in daily extreme temperatures in
the extra-Carpathians regions of Romania, Int. J. Climatol., 33,
1987–2001, https://doi.org/10.1002/joc.3567, 2013.
Croitoru, A.-E., Piticar, A., Ciupertea, A.-F., and Roşca, C. F.: Changes
in heat waves indices in Romania over the period 1961–2015, Global Planet.
Change, 146, 109–121, https://doi.org/10.1016/j.gloplacha.2016.08.016,
2016.
Dang, V. H., Tran, D. D., Cham, D. D., Hang, P. T. T., Nguyen, H. T.,
Truong, H. Van, Tran, P. H., Duong, M. B., Nguyen, N. T., Le, K. Van, Pham,
T. B. T., and Nguyen, A. H.: Assessment of Rainfall Distributions and
Characteristics in Coastal Provinces of the Vietnamese Mekong Delta under
Climate Change and ENSO Processes, Water, 12, 1555, https://doi.org/10.3390/w12061555,
2020.
Della-Marta, P. M., Luterbacher, J., von Weissenfluh, H., Xoplaki, E.,
Brunet, M., and Wanner, H.: Summer heat waves over western Europe 1880–2003,
their relationship to large-scale forcings and predictability, Clim. Dynam., 29, 251–275,
https://doi.org/10.1007/s00382-007-0233-1, 2007.
Dima, V., Georgescu, F., Irimescu, A., and Mihailescu, D.: Valuri de caldura
in Romania, PRINTECH, București, 89 pp.,
ISBN 978-606-23-0666-3, 2016.
Feng, S., Wu, X., Hao, Z., Hao, Y., Zhang, X., and Hao, F.: A database for
characteristics and variations of global compound dry and hot events,
Weather Clim. Extrem., 30, 100299,
https://doi.org/10.1016/j.wace.2020.100299, 2020.
Fioravanti, G., Piervitali, E., and Desiato, F.: Recent changes of
temperature extremes over Italy: an index-based analysis, Theor. Appl.
Climatol., 123, 473–486, https://doi.org/10.1007/s00704-014-1362-1, 2016.
Gao, T., Yu, J., and Paek, H.: Impacts of four northern-hemisphere
teleconnection patterns on atmospheric circulations over Eurasia and the
Pacific, Theor. Appl. Climatol., 129, 815–831,
https://doi.org/10.1007/s00704-016-1801-2, 2017.
Geirinhas, J. L., Russo, A., Libonati, R., Sousa, P. M., Miralles, D. G., and
Trigo, R. M.: Recent increasing frequency of compound summer drought and
heatwaves in Southeast Brazil, Environ. Res. Lett., 16, 034036,
https://doi.org/10.1088/1748-9326/abe0eb, 2021.
Gocheva, A., Trifonova, L., Marinova, T., and Bocheva, L.: Extreme Hot Spells
and Heat Waves on the Territory of Bulgaria, ResearchGate, https://www.researchgate.net/publication/240615319_Extreme_ Hot_Spells_and_Heat_Waves_on_the_Territory_of_Bulgaria (last access: 5 December 2021), 2006.
Grams, C. M., Binder, H., Pfahl, S., Piaget, N., and Wernli, H.: Atmospheric processes triggering the central European floods in June 2013, Nat. Hazards Earth Syst. Sci., 14, 1691–1702, https://doi.org/10.5194/nhess-14-1691-2014, 2014.
Hamed, K. H. and Ramachandra Rao, A.: A modified Mann-Kendall trend test for
autocorrelated data, J. Hydrol., 204, 182–196,
https://doi.org/10.1016/S0022-1694(97)00125-X, 1998.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A.,
Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D.,
Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P.,
Biavati, G., Bidlot, J., Bonavita, M., De Chiara, G., Dahlgren, P., Dee, D.,
Diamantakis, M., Dragani, R., Flemming, J., Forbes, R., Fuentes, M., Geer,
A., Haimberger, L., Healy, S., Hogan, R. J., Hólm, E., Janisková,
M., Keeley, S., Laloyaux, P., Lopez, P., Lupu, C., Radnoti, G., de Rosnay,
P., Rozum, I., Vamborg, F., Villaume, S., and Thépaut, J.-N.: The ERA5
global reanalysis, Q. J. Roy. Meteor. Soc., 146, 1999–2049,
https://doi.org/10.1002/qj.3803, 2020.
Horton, D. E., Johnson, N. C., Singh, D., Swain, D. L., Rajaratnam, B., and
Diffenbaugh, N. S.: Contribution of changes in atmospheric circulation
patterns to extreme temperature trends, Nature, 522, 465–469,
https://doi.org/10.1038/nature14550, 2015.
Hustiu, M. C.: Cold and heat waves in the Barlad Plateau between 1961 and
2013, Riscuri si Catastr., 18, 31–42, 2016.
Ionita, M.: Interannual summer streamflow variability over Romania and its
connection to large-scale atmospheric circulation, Int. J. Climatol.,
35, 4186–4196, https://doi.org/10.1002/joc.4278, 2015.
Ionita, M., Lohmann, G., and Rimbu, N.: Prediction of spring Elbe discharge
Based on stable teleconnections with winter global temperature and
precipitation, J. Climate, 21, 6215–6226, https://doi.org/10.1175/2008JCLI2248.1,
2008.
Ionita, M., Lohmann, G., Rimbu, N., Chelcea, S., and Dima, M.: Interannual to
decadal summer drought variability over Europe and its relationship to
global sea surface temperature, Clim. Dynam., 38, 363–377,
https://doi.org/10.1007/s00382-011-1028-y, 2012.
Ionita, M., Rimbu, N., Chelcea, S., and Patrut, S.: Multidecadal variability
of summer temperature over Romania and its relation with Atlantic
Multidecadal Oscillation, Theor. Appl. Climatol., 113, 305–315,
https://doi.org/10.1007/s00704-012-0786-8, 2013.
Ionita, M., Dima, M., Lohmann, G., Scholz, P., and Rimbu, N.: Predicting the
June 2013 European Flooding Based on Precipitation, Soil Moisture, and Sea
Level Pressure, J. Hydrometeorol., 16, 598–614,
https://doi.org/10.1175/JHM-D-14-0156.1, 2015.
Ionita, M., Tallaksen, L. M., Kingston, D. G., Stagge, J. H., Laaha, G., Van Lanen, H. A. J., Scholz, P., Chelcea, S. M., and Haslinger, K.: The European 2015 drought from a climatological perspective, Hydrol. Earth Syst. Sci., 21, 1397–1419, https://doi.org/10.5194/hess-21-1397-2017, 2017.
Ionita, M., Grosfeld, K., Scholz, P., Treffeisen, R., and Lohmann, G.: September Arctic sea ice minimum prediction – a skillful new statistical approach, Earth Syst. Dynam., 10, 189–203, https://doi.org/10.5194/esd-10-189-2019, 2019.
Ionita, M., Nagavciuc, V., Kumar, R., and Rakovec, O.: On the curious case of
the recent decade, mid-spring precipitation deficit in central Europe, npj
Clim. Atmos. Sci., 3, 49, https://doi.org/10.1038/s41612-020-00153-8, 2020.
Ionita, M., Caldarescu, D. E., and Nagavciuc, V.: Compound Hot and Dry Events
in Europe: Variability and Large-Scale Drivers, Front. Clim., 3, 58,
https://doi.org/10.3389/fclim.2021.688991, 2021a.
Ionita, M., Dima, M., Nagavciuc, V., Scholz, P., and Lohmann, G.: Past
megadroughts in central Europe were longer, more severe and less warm than
modern droughts, Commun. Earth Environ., 2, 61,
https://doi.org/10.1038/s43247-021-00130-w, 2021b.
IPCC: Climate Change 2021: The Physical Science Basis. Contribution of
Working Group I to the Sixth Assessment Report of the Intergovernmental
Panel on Climate Change, edited by: Masson-Delmotte, V., Zhai, P., Pirani, A.,
Connors, S. L., Péan, C., Berger, S., Caud, N., Chen, Y., Goldfarb, L.,
Gomis, M. I., Huang, M., Leitzell, K., Lonnoy, E., Matthews, J. B. R., Maycock, T. K.,
Waterfield, T., Yelekçi, O., Yu, R., and Zhou, B., Cambridge University
Press, https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Citation.pdf (last access: 23 August 2021), in press, 2021.
Jeong, D. I., Yu, B., and Cannon, A. J.: Links between atmospheric blocking
and North American winter cold spells in two generations of Canadian Earth
System Model large ensembles, Clim. Dynam., 57, 2217–2231,
https://doi.org/10.1007/s00382-021-05801-0, 2021.
Kautz, L.-A., Martius, O., Pfahl, S., Pinto, J. G., Ramos, A. M., Sousa, P. M., and Woollings, T.: Atmospheric blocking and weather extremes over the Euro-Atlantic sector – a review, Weather Clim. Dynam., 3, 305–336, https://doi.org/10.5194/wcd-3-305-2022, 2022.
Kingston, D. G., Lawler, D. M., and McGregor, G. R.: Linkages between
atmospheric circulation, climate and streamflow in the northern North
Atlantic: research prospects, Prog. Phys. Geog., 30, 143–174,
https://doi.org/10.1191/0309133306pp471ra, 2006.
Kingston, D. G., Stagge, J. H., Tallaksen, L. M., and Hannah, D. M.:
European-Scale Drought: Understanding Connections between Atmospheric
Circulation and Meteorological Drought Indices, J. Climate, 28, 505–516,
https://doi.org/10.1175/JCLI-D-14-00001.1, 2015.
Kong, Q., Guerreiro, S. B., Blenkinsop, S., Li, X.-F., and Fowler, H. J.:
Increases in summertime concurrent drought and heatwave in Eastern China,
Weather Clim. Extrem., 28, 100242,
https://doi.org/10.1016/j.wace.2019.100242, 2020.
Laaha, G., Gauster, T., Tallaksen, L. M., Vidal, J.-P., Stahl, K., Prudhomme, C., Heudorfer, B., Vlnas, R., Ionita, M., Van Lanen, H. A. J., Adler, M.-J., Caillouet, L., Delus, C., Fendekova, M., Gailliez, S., Hannaford, J., Kingston, D., Van Loon, A. F., Mediero, L., Osuch, M., Romanowicz, R., Sauquet, E., Stagge, J. H., and Wong, W. K.: The European 2015 drought from a hydrological perspective, Hydrol. Earth Syst. Sci., 21, 3001–3024, https://doi.org/10.5194/hess-21-3001-2017, 2017.
Leonard, M., Westra, S., Phatak, A., Lambert, M., van den Hurk, B., McInnes,
K., Risbey, J., Schuster, S., Jakob, D., and Stafford-Smith, M.: A compound
event framework for understanding extreme impacts, WIREs Clim. Chang., 5,
113–128, https://doi.org/10.1002/wcc.252, 2014.
Lorenz, R., Stalhandske, Z., and Fischer, E. M.: Detection of a Climate
Change Signal in Extreme Heat, Heat Stress, and Cold in Europe From
Observations, Geophys. Res. Lett., 46, 8363–8374,
https://doi.org/10.1029/2019GL082062, 2019.
Malinovic-Milicevic, S., Radovanovic, M. M., Stanojevic, G., and Milovanovic,
B.: Recent changes in Serbian climate extreme indices from 1961 to 2010,
Theor. Appl. Climatol., 124, 1089–1098, https://doi.org/10.1007/s00704-015-1491-1,
2016.
Mann, H. B.: Nonparametric Tests Against Trend, Econometrica, 13,
245–259, https://doi.org/10.2307/1907187, 1945.
Micu, D. M., Amihaesei, V. A., Milian, N., and Cheval, S.: Recent changes in
temperature and precipitation indices in the Southern Carpathians, Romania
(1961–2018), Theor. Appl. Climatol., 144, 691–710,
https://doi.org/10.1007/s00704-021-03560-w, 2021.
Nagavciuc, V., Ionita, M., Perșoiu, A., Popa, I., Loader, N. J., and
McCarroll, D.: Stable oxygen isotopes in Romanian oak tree rings record
summer droughts and associated large-scale circulation patterns over Europe,
Clim. Dynam., 52, 6557–6568, https://doi.org/10.1007/s00382-018-4530-7, 2019.
Najibi, N., Devineni, N., Lu, M., and Perdigão, R. A. P.: Coupled flow
accumulation and atmospheric blocking govern flood duration, npj Clim.
Atmos. Sci., 2, 19, https://doi.org/10.1038/s41612-019-0076-6, 2019.
Perkins, S. E. and Alexander, L. V: On the Measurement of Heat Waves, J.
Climate, 26, 4500–4517, https://doi.org/10.1175/JCLI-D-12-00383.1, 2013.
Porebska, M. and Zdunek, M.: Analysis of extreme temperature events in
Central Europe related to high pressure blocking situations in 2001–2011,
Meteorol. Z., 22, 533–540, https://doi.org/10.1127/0941-2948/2013/0455,
2013.
Prăvălie, R., Bandoc, G., Patriche, C., and Tomescu, M.:
Spatio-temporal trends of mean air temperature during 1961–2009 and impacts
on crop (maize) yields in the most important agricultural region of Romania,
Stoch. Env. Res. Risk A., 31, 1923–1939,
https://doi.org/10.1007/s00477-016-1278-7, 2017.
Raymond, C., Horton, R. M., Zscheischler, J., Martius, O., AghaKouchak, A.,
Balch, J., Bowen, S. G., Camargo, S. J., Hess, J., Kornhuber, K.,
Oppenheimer, M., Ruane, A. C., Wahl, T., and White, K.: Understanding and
managing connected extreme events, Nat. Clim. Change, 10, 611–621,
https://doi.org/10.1038/s41558-020-0790-4, 2020.
Rey, G., Jougla, E., Fouillet, A., Pavillon, G., Bessemoulin, P.,
Frayssinet, P., Clavel, J., and Hémon, D.: The impact of major heat waves
on all-cause and cause-specific mortality in France from 1971 to 2003, Int.
Arch. Occ. Env. Hea., 80, 615–626,
https://doi.org/10.1007/s00420-007-0173-4, 2007.
Ridder, N. N., Pitman, A. J., Westra, S., Ukkola, A., Do, H. X., Bador, M.,
Hirsch, A. L., Evans, J. P., Di Luca, A., and Zscheischler, J.: Global
hotspots for the occurrence of compound events, Nat. Commun., 11, 5956,
https://doi.org/10.1038/s41467-020-19639-3, 2020.
Rimbu, N., Dima, M., Lohmann, G., and Stefan, S.: Impacts of the North
Atlantic Oscillation and the El Niño-Southern Oscillation on Danube
river flow variability, Geophys. Res. Lett., 31, L23203,
https://doi.org/10.1029/2004GL020559, 2004.
Rimbu, N., Lohmann, G., and Ionita, M.: Interannual to multidecadal
Euro-Atlantic blocking variability during winter and its relationship with
extreme low temperatures in Europe, J. Geophys. Res.-Atmos., 119,
13621–13636, https://doi.org/10.1002/2014JD021983, 2014.
Robinson, P. J.: On the Definition of a Heat Wave, J. Appl. Meteorol.,
40, 762–775, https://doi.org/10.1175/1520-0450(2001)040<0762:OTDOAH>2.0.CO;2, 2001.
Russo, A., Gouveia, C. M., Dutra, E., Soares, P. M. M., and Trigo, R. M.: The
synergy between drought and extremely hot summers in the Mediterranean,
Environ. Res. Lett., 14, 014011, https://doi.org/10.1088/1748-9326/aaf09e, 2019.
Rusticucci, M., Barrucand, M., and Collazo, S.: Temperature extremes in the
Argentina central region and their monthly relationship with the mean
circulation and ENSO phases, Int. J. Climatol., 37, 3003–3017,
https://doi.org/10.1002/joc.4895, 2017.
Scherrer, S. C., Croci-Maspoli, M., Schwierz, C., and Appenzeller, C.:
Two-dimensional indices of atmospheric blocking and their statistical
relationship with winter climate patterns in the Euro-Atlantic region, Int.
J. Climatol., 26, 233–249, https://doi.org/10.1002/joc.1250, 2006.
Schubert, S. D., Wang, H., Koster, R. D., Suarez, M. J., and Groisman, P. Y.:
Northern Eurasian heat waves and droughts, J. Climate, 27, 3169–3207,
https://doi.org/10.1175/JCLI-D-13-00360.1, 2014.
Schubert, S. D., Stewart, R. E., Wang, H., Barlow, M., Berbery, E. H., Cai,
W., Hoerling, M. P., Kanikicharla, K. K., Koster, R. D., Lyon, B., Mariotti,
A., Mechoso, C. R., Müller, O. V., Rodriguez-Fonseca, B., Seager, R.,
Senevirante, S. I., Zhang, L., and Zhou, T.: Global meteorological drought: A
synthesis of current understanding with a focus on sst drivers of
precipitation deficits, J. Climate, 29,
3989–4019, https://doi.org/10.1175/JCLI-D-15-0452.1, 2016.
Sen, P. K.: Estimates of the Regression Coefficient Based on Kendall's Tau,
J. Am. Stat. Assoc., 63, 1379–1389,
https://doi.org/10.1080/01621459.1968.10480934, 1968.
Seneviratne, S. I., Nicholls, N., Easterling, D., Goodess, C. M., Kanae, S.,
Kossin, J., Luo, Y., Marengo, J., McInnes, K., Rahimi, M., Reichstein, M.,
Sorteberg, A., Vera, C., Zhang, X., Rusticucci, M., Semenov, V., Alexander,
L. V, Allen, S., Benito, G., Cavazos, T., Clague, J., Conway, D.,
Della-Marta, P. M., Gerber, M., Gong, S., Goswami, B. N., Hemer, M., Huggel,
C., van den Hurk, B., Kharin, V. V., Kitoh, A., Tank, A. M. G. K., Li, G.,
Mason, S., McGuire, W., van Oldenborgh, G. J., Orlowsky, B., Smith, S.,
Thiaw, W., Velegrakis, A., Yiou, P., Zhang, T., Zhou, T., and Zwiers, F. W.:
Changes in Climate Extremes and their Impacts on the Natural Physical
Environment, in Managing the Risks of Extreme Events and Disasters to
Advance Climate Change Adaptation: Special Report of the Intergovernmental
Panel on Climate Change, edited by: Field, C. B., Dahe, Q., Stocker, T. F., and
Barros, V., Cambridge University Press, Cambridge, 109–230, https://doi.org/10.1017/CBO9781139177245.006, 2012.
Sfîcă, L., Croitoru, A.-E., Iordache, I., and Ciupertea, A.-F.:
Synoptic Conditions Generating Heat Waves and Warm Spells in Romania,
Atmosphere-Basel, 8, 50, https://doi.org/10.3390/atmos8030050, 2017.
Shevchenko, O., Lee, H., Snizhko, S., and Mayer, H.: Long-term analysis of
heat waves in Ukraine, Int. J. Climatol., 34, 1642–1650,
https://doi.org/10.1002/joc.3792, 2014.
Smoyer-Tomic, K. E., Kuhn, R., and Hudson, A.: Heat Wave Hazards: An Overview
of Heat Wave Impacts in Canada, Nat. Hazards, 28, 465–486,
https://doi.org/10.1023/A:1022946528157, 2003.
Spinoni, J., Naumann, G., Vogt, J. V., and Barbosa, P.: The biggest drought
events in Europe from 1950 to 2012, J. Hydrol. Reg. Stud., 3, 509–524,
https://doi.org/10.1016/j.ejrh.2015.01.001, 2015.
Stegehuis, A. I., Vogel, M. M., Vautard, R., Ciais, P., Teuling, A. J., and
Seneviratne, S. I.: Early Summer Soil Moisture Contribution to Western
European Summer Warming, J. Geophys. Res.-Atmos., 126, e2021JD034646,
https://doi.org/10.1029/2021JD034646, 2021.
Swain, D. L., Horton, D. E., Singh, D., and Diffenbaugh, N. S.: Trends in
atmospheric patterns conducive to seasonal precipitation and temperature
extremes in California, Sci. Adv., 2, 1–14, https://doi.org/10.1126/sciadv.1501344,
2016.
Tibaldi, S. and Molteni, F.: On the operational predictability of blocking,
Tellus A, 42, 343–365, 1990.
Tomczyk, A. M. and Bednorz, E.: Heat waves in Central Europe and their
circulation conditions, Int. J. Climatol., 36, 770–782,
https://doi.org/10.1002/joc.4381, 2016.
Tomczyk, A. M., Półrolniczak, M., and Bednorz, E.: Circulation
Conditions' Effect on the Occurrence of Heat Waves in Western and
Southwestern Europe, Atmosphere-Basel, 8, 31, https://doi.org/10.3390/atmos8020031,
2017.
Tomozeiu, R., Stefan, S., and Busuioc, A.: Winter precipitation variability
and large-scale circulation patterns in Romania, Theor. Appl. Climatol., 81,
193–201, https://doi.org/10.1007/s00704-004-0082-3, 2005.
Twardosz, R. and Kossowska-Cezak, U.: Exceptionally hot summers in Central
and Eastern Europe (1951-2010), Theor. Appl. Climatol., 112, 617–628,
https://doi.org/10.1007/s00704-012-0757-0, 2013.
Vaideanu, P., Dima, M., Pirloaga, R., and Ionita, M.: Disentangling and
quantifying contributions of distinct forcing factors to the observed global
sea level pressure field, Clim. Dynam., 54, 1453–1467,
https://doi.org/10.1007/s00382-019-05067-7, 2020.
Vanderlinden, K., Giráldez, J. V., and van Meirvenne, M.: Spatial estimation of reference evapotranspiration in Andalusia, Spain, J. Hydrometeorol., 9, 242–255, https://doi.org/10.1175/2007JHM880.1, 2008.
Van Lanen, H. A. J. H. A. J., Laaha, G., Kingston, D. G. D. G., Gauster, T.,
Ionita, M., Vidal, J.-P. J. P., Vlnas, R., Tallaksen, L. M. L. M., Stahl,
K., Hannaford, J., Delus, C., Fendekova, M., Mediero, L., Prudhomme, C.,
Rets, E., Romanowicz, R. J. R. J., Gailliez, S., Wong, W. K. W. K., Adler,
M. J. M.-J., Blauhut, V., Caillouet, L., Chelcea, S., Frolova, N.,
Gudmundsson, L., Hanel, M., Haslinger, K., Kireeva, M., Osuch, M., Sauquet,
E., Stagge, J. H. J. H., and Van Loon, A. F. A. F.: Hydrology needed to
manage droughts: the 2015 European case, Hydrol. Process., 30,
3097–3104, https://doi.org/10.1002/hyp.10838, 2016.
Vicente-Serrano, S. M., and López-Moreno, J. I.: Nonstationary influence
of the North Atlantic Oscillation on European precipitation, J. Geophys.
Res.-Atmos., 113, D20120, https://doi.org/10.1029/2008JD010382, 2008.
Vicente-Serrano, S. M., Beguería, S., and López-Moreno, J. I.: A
multiscalar drought index sensitive to global warming: The standardized
precipitation evapotranspiration index, J. Climate, 23, 1696–1718,
https://doi.org/10.1175/2009JCLI2909.1, 2010.
Zscheischler, J. and Seneviratne, S. I.: Dependence of drivers affects risks
associated with compound events, Sci. Adv., 3, 1–11,
https://doi.org/10.1126/sciadv.1700263, 2017.
Zscheischler, J., Westra, S., Van Den Hurk, B. J. J. M., Seneviratne, S. I.,
Ward, P. J., Pitman, A., Aghakouchak, A., Bresch, D. N., Leonard, M., Wahl,
T., and Zhang, X.: Future climate risk from compound events, Nat. Clim.
Change, 8, 469–477, https://doi.org/10.1038/s41558-018-0156-3, 2018.
Short summary
Here we have assessed the variability and trends of hot and dry summers in Romania. The length, spatial extent, and frequency of heat waves in Romania have increased significantly over the last 70 years, while no significant changes have been observed in the drought conditions. The increased frequency of heat waves, especially after the 1990s, could be partially explained by an increase in the geopotential height over the eastern part of Europe.
Here we have assessed the variability and trends of hot and dry summers in Romania. The length,...
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