TAMSAT is the acronym for Tropical Application of Meteorology Using Satellite Data and Ground-Based Observations which is a rainfall estimation and quality assessment system providing high-resolution (~4 km) , 10-daily (or monthly) pan-African rainfall estimates.
The TAMSAT system is based on two cardinal data sets: 1) Rainfall estimates based on time-lapse analysis of the cloud-top temperature distribution and development observed every 30 minutes (every 15 minutes since July 2006) by thermal infrared (TIR) imagery from aboard the Meteosat satellites of the first and second generation [Grimes et al., 1999; Maidment et al., 2014, 2017, see References]. This retrieval is based on the assumption of a positive linear relationship between the life-time of convective clouds and the amount of rainfall at the surface; it works best (if not exclusively) for convective precipitation. 2) a thoroughly quality-assessed rain gauge data archive for the calibration of the TAMSAT rainfall estimation algorithm spanning years 1983-2012; in addition to that near-real-time rain gauge data available since 2011 are used for operational validation of the TAMSAT rainfall estimates.
We refer to the TAMSAT web page and the references for more information. We offer version 3 of this data set.
Last update of data set at ICDC: February 16 2018.