Articles | Volume 21, issue 2
Nat. Hazards Earth Syst. Sci., 21, 481–495, 2021
https://doi.org/10.5194/nhess-21-481-2021
Nat. Hazards Earth Syst. Sci., 21, 481–495, 2021
https://doi.org/10.5194/nhess-21-481-2021

Research article 02 Feb 2021

Research article | 02 Feb 2021

A revision of the Combined Drought Indicator (CDI) used in the European Drought Observatory (EDO)

Carmelo Cammalleri et al.

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Cited articles

Blauhut, V., Stahl, K., Stagge, J. H., Tallaksen, L. M., De Stefano, L., and Vogt, J.: Estimating drought risk across Europe from reported drought impacts, drought indices, and vulnerability factors, Hydrol. Earth Syst. Sci., 20, 2779–2800, https://doi.org/10.5194/hess-20-2779-2016, 2016. 
Buras, A., Rammig, A., and Zang, C. S.: Quantifying impacts of the 2018 drought on European ecosystems in comparison to 2003, Biogeosciences, 17, 1655–1672, https://doi.org/10.5194/bg-17-1655-2020, 2020. 
Cammalleri, C., Verger, A., Lacaze, R., and Vogt, J. V.: Harmonization of GEOV2 FAPAR time series through MODIS data for global drought monitoring, Int. J. Appl. Earth Obs., 80, 1–12, https://doi.org/10.1016/j.jag.2019.03.017, 2019. 
Clark, A., McGowen, I., Crean, J., Kelly, R., and Wang, B.: Stage 1 – Enhanced Drought Information System: NSW DPI Combined Drought Indicator, Technical Report, NSW Department of Primary Industries, 76 pp., Orange, NSW, Australia, ISBN 978-1-76058-016-2, 2016. 
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Short summary
Building on almost ten years of expertise and operational application of the Combined Drought Indicator (CDI) for the monitoring of agricultural droughts in Europe within the European Commission's European Drought Observatory (EDO), this paper proposes a revised version of the index. This paper shows that the proposed revised CDI reliably reproduces the evolution of major droughts, outperforming the current version of the indicator, especially for long-lasting events.
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