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

data type
Global atmospheric reanalysis
spatial domain
spatial resolution
0.25° x 0.25°
temporal coverage
1950 to present
time step
Hourly; Daily; Monthly
data format
5th generation reanalysis. ERA5 combines vast amounts of historical observations into global estimates using advanced modelling and data assimilation systems. Total precipitation is the accumulated liquid and frozen water, comprising rain and snow that falls to the Earth's surface. It is the sum of large-scale precipitation and convective precipitation. Large-scale precipitation is generated by the cloud scheme in the ECMWF Integrated Forecasting System (IFS). Convective precipitation is generated by the convection scheme in the IFS, which represents convection at spatial scales smaller than the grid box. This parameter does not include fog, dew or the precipitation that evaporates in the atmosphere before it lands at the surface of the Earth. Beside total precipitation, it also provides values for convective and large scale precipitation, rain, snowfall, snowfall rate water equivalent, Instantaneous large-scale surface precipitation fraction, maximum total precipitation rate since previous post-processing, total column rain water, total column snow water, precipitation type and others.