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Accumulated drought months per year from 3−Month−SPEI in RSA (A), accumulated water storage deficit volume calculated with the model WaterGAP (B), deviation of AET/PET ratio from long-term mean for maize calculated with GCWM (C) for year 2005. Drought Severity Index (Zhao et al., 2017) for the project regions using total water storage changes from GRACE gravity measurements (D) for period 2003-2017.

Accumulated drought months per year from 3−Month−SPEI in RSA (A), accumulated water storage deficit volume calculated with the model WaterGAP (B), deviation of AET/PET ratio from long-term mean for maize calculated with GCWM (C) for year 2005. Drought Severity Index (Zhao et al., 2017) for the project regions using total water storage changes from GRACE gravity measurements (D) for period 2003-2017.

Source publication
Conference Paper
Full-text available
In times of drought, water resources are insufficient. These water shortages often have negative effects on agricultural productivity and on associated socioeconomic factors, causing reduced income, food shortages and even famines. The overall objective of GlobeDrought is to develop an integrated drought risk information system which will adequatel...

Contexts in source publication

Context 1
... publication, describing the novel drought risk analysis framework and the indicators selected so far, is under preparation. By analysing remote sensing based indicators and the output of the global hydrological and crop models, we found that the different, independent data sources provide consistent infor- mation on the development of different types of drought ( Figure 2). There is also a good agreement to survey data for agricultural production. ...
Context 2
... is also a good agreement to survey data for agricultural production. For example, crop production in Zimbabwe and South Africa was extremely low in year 2005, identified as severe drought for Southern Africa (Figure 2). The results of the crop model applied at global scale showed that the severity of drought impacts differs between the specific crops, for example between crop cultivated in the winter or summer season or those cultivated in the wet or dry season, so that crop specific information needs to be considered in drought impact assessments (Eyshi Rezaei & Siebert, 2018). ...