SPEI Web Portal

A web portal (sac.csic.es/spei/) has been developed that focuses on the Standardized Precipitation Evapotranspiration Index (SPEI), a recent tool for the analysis and monitoring of droughts.

The web portal provides information on the SPEI and different software tools to calculate SPEI

In addition, the website includes access to a SPEI database that can be obtained at time scales ranging from 1-48 months. the database has been created from information on precipitation and potential evapotranspiration published by the Climate Research Unit of the University of East Anglia ( badc.nerc.ac.uk/browse/badc/cru/data). The information covers the period 1901-2011 at a spatial resolution of 0.5 °. This database can be downloaded in its entirety in netCDF format, or by selecting a specific pixel coordinates.

Finally, a portal has been created that allows the monitoring of real-time drought.  it shows the current drought conditions from SPEI worldwide (as of the most current information available on a global scale). The portal allows visualization mapping of the SPEI values at different time scales (3, 6, 9, 12, 24, 36 and 48 months) and time series of the selected areas (either a specific pixel or frame). This information can also be downloaded in netCDF format (the entire database), the pixel of interest or the means of a user-specified frame.