GPCC

From variable 3.5
Summary of observation-based historical datasets with total precipitation available.
reference

source
WMO
data type
Gridded observations
spatial domain
Global
spatial resolution
0.5° x 0.5°;1° x 1°;2.5° x2.5°
temporal coverage
1891-2016
time step
Daily; Monthly; Climatological means
data format
Binary; NetCDF
comments
Products provided by the GPCC are not bias corrected for systematic gauge measuring errors. It provides values and anomalies for total precipitation.