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Earth Syst. Sci. Data, 6, 285-295, 2014
https://doi.org/10.5194/essd-6-285-2014 © Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. 
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Review article
29 Aug 2014
1Deutscher Wetterdienst, Global Precipitation Climatology Centre, 63067 Offenbach/M., Germany
2Deutscher Wetterdienst, Regionale Klimaüberwachung, 63067 Offenbach/M., Germany
3Deutscher Wetterdienst, Agrarmeteorologische Beratung, 63067 Offenbach/M., Germany
*now at: Technical University Zvolen, Department of Natural Environment, 960 53 Zvolen, Slovakia
Received: 27 Mar 2014 – Discussion started: 29 Apr 2014
Revised: 29 Jul 2014 – Accepted: 19 Aug 2014 – Published: 29 Aug 2014
Abstract. The Global Precipitation Climatology Centre Drought Index (GPCC-DI) provides estimations of water supply anomalies with respect to long-term statistics. It is a combination of the Standardized Precipitation Index with adaptations from Deutscher Wetterdienst (SPI-DWD) and the Standardized Precipitation Evapotranspiration Index (SPEI). Precipitation data were taken from the Global Precipitation Climatology Centre (GPCC) and temperature data from NOAA's Climate Prediction Center (CPC). The GPCC-DI is available with several accumulation periods of 1, 3, 6, 9, 12, 24 and 48 months for different applications. It is issued monthly starting in January 2013. Typically, it is released on the 10th day of the following month, depending on the availability of the input data. It is calculated on a regular grid with 1° spatial resolution. All accumulation periods are integrated into one netCDF file for each month. This data set is referenced by the doi:10.5676/DWD_GPCC/DI_M_100 and is available free of charge from the GPCC website ftp://ftp.dwd.de/pub/data/gpcc/html/gpcc_di_doi_download.html.
Citation: Ziese, M., Schneider, U., Meyer-Christoffer, A., Schamm, K., Vido, J., Finger, P., Bissolli, P., Pietzsch, S., and Becker, A.: The GPCC Drought Index – a new, combined and gridded global drought index, Earth Syst. Sci. Data, 6, 285-295, https://doi.org/10.5194/essd-6-285-2014, 2014.
2Deutscher Wetterdienst, Regionale Klimaüberwachung, 63067 Offenbach/M., Germany
3Deutscher Wetterdienst, Agrarmeteorologische Beratung, 63067 Offenbach/M., Germany
*now at: Technical University Zvolen, Department of Natural Environment, 960 53 Zvolen, Slovakia
Citation: Ziese, M., Schneider, U., Meyer-Christoffer, A., Schamm, K., Vido, J., Finger, P., Bissolli, P., Pietzsch, S., and Becker, A.: The GPCC Drought Index – a new, combined and gridded global drought index, Earth Syst. Sci. Data, 6, 285-295, https://doi.org/10.5194/essd-6-285-2014, 2014.
