Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 3.102
IF3.102
IF 5-year value: 3.284
IF 5-year
3.284
CiteScore value: 5.1
CiteScore
5.1
SNIP value: 1.37
SNIP1.37
IPP value: 3.21
IPP3.21
SJR value: 1.005
SJR1.005
Scimago H <br class='widget-line-break'>index value: 90
Scimago H
index
90
h5-index value: 42
h5-index42
Download
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, out-performing the current version of the indicator, especially for long-lasting events.
Altmetrics
Preprints
https://doi.org/10.5194/nhess-2020-204
https://doi.org/10.5194/nhess-2020-204

  07 Aug 2020

07 Aug 2020

Review status: a revised version of this preprint was accepted for the journal NHESS and is expected to appear here in due course.

A revision of the Combined Drought Indicator (CDI) as part of the European Drought Observatory (EDO)

Carmelo Cammalleri1, Carolina Arias-Muñoz2, Paulo Barbosa1, Alfred de Jager1, Diego Magni3, Dario Masante3, Marco Mazzeschi4, Niall McCormick1, Gustavo Naumann1, Jonathan Spinoni1, and Jürgen Vogt1 Carmelo Cammalleri et al.
  • 1European Commission, Joint Research Centre (JRC), Ispra, Italy
  • 2Arhs Developments, Milan, Italy
  • 3Arcadia SIT, Vigevano, Italy
  • 4UniSystems Luxembourg Sàrl, Luxembourg

Abstract. Building on almost ten years of expertise and operational application of the Combined Drought Indicator (CDI), which is operationally implemented within the European Commission’s European Drought Observatory (EDO) for the purposes of early warning and monitoring of agricultural droughts in Europe, this paper proposes a revised version of the index. The CDI conceptualizes drought as a cascade process, where a precipitation shortage (WATCH stage) develops into a soil water deficit (WARNING stage), which in turn leads to stress for vegetation (ALERT stage). The main goal of the revised CDI proposed here, is to improve the indicator’s performance for those events that are currently not reliably represented, without drastically altering the modelling framework. This is achieved by means of two main modifications: (a) use of the previously occurring CDI value to improve the temporal consistency of the timeseries, (b) introduction of two temporary classes – namely, soil moisture and vegetation greenness – to avoid brief discontinuities in a stage. The efficacy of the modifications is tested by comparing the performances of the revised and currently implemented versions of the indicator, for actual drought events in Europe during the last 20 years. The revised CDI reliably reproduces the evolution of major droughts, out-performing the current version of the indicator, especially for long-lasting events. Since the revised CDI does not need supplementary input datasets, it is suitable for operational implementation within the EDO drought monitoring system.

Carmelo Cammalleri et al.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Carmelo Cammalleri et al.

Carmelo Cammalleri et al.

Viewed

Total article views: 250 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
172 74 4 250 7 7
  • HTML: 172
  • PDF: 74
  • XML: 4
  • Total: 250
  • BibTeX: 7
  • EndNote: 7
Views and downloads (calculated since 07 Aug 2020)
Cumulative views and downloads (calculated since 07 Aug 2020)

Viewed (geographical distribution)

Total article views: 212 (including HTML, PDF, and XML) Thereof 211 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 22 Jan 2021
Publications Copernicus
Download
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, out-performing the current version of the indicator, especially for long-lasting events.
Citation
Altmetrics