The Global Integrated Drought Monitoring and Prediction System (GIDMaPS) provides near real-time drought information based on multiple drought indicators and input data sets (http://drought.eng.uci.edu/). In this package, the folder names indicate the drought index and the source of data (INDEX_SOURCE). Index options are: 1-PSI: Multivariate Standardized Drought Index (MSDI) based on Precipitation (P) and Soil Moisture (S). 2-SSI: Standardized Soil Moisture Index 3-SPI: Standardized Precipitation Index. In each folder the files are named as INDEXYYYYMM.asc, where YYYY= year; MM= month, and INDEX = PSI, SSI, SPI.
GIDMaPS is presented in [Hao et al, 2014]. The deatails of MSDI, SSI and SPI are discussed in [Hao and AghaKouchak 2013a, 2013b]. GIDMaPS data has been used in [Damberg and AghaKouchak, 2013].
 Hao Z., AghaKouchak A., Nakhjiri N., Farahmand A., 2014, Global Integrated Drought Monitoring and Prediction System, Scientific Data, 1: 140001, doi: 10.1038/sdata.2014.1.
 Hao Z., AghaKouchak A., 2013a, A Nonparametric Multivariate Multi-Index Drought Monitoring Framework,Journal of Hydrometeorology, doi:10.1175/JHM-D-12-0160.1.
 Hao Z., AghaKouchak A., 2013b, Multivariate Standardized Drought Index: A Parametric Multi-Index Model,Advances in Water Resources, 57, 12-18, doi: 10.1016/j.advwatres.2013.03.009.
 Damberg L., AghaKouchak A., 2013, Global Trends and Patterns of Droughts from Space, Theoretical and Applied Climatology, doi: 10.1007/s00704-013-1019-5.