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Here we document the ERA5-Land dataset, which, eventually, will cover the same period as ERA5, January 1950 to near real time (NRT). ERA5-Land data released so far covers the period from 2001 1981 to 2-3 months before the present. The period 1981-2000 will be released in Autumn 2019, whereas the back-extension from 1950 will start production in late 2019 with the release planned for Q2-Q3 2020. In addition, the facility to deliver timely updates is being implemented and it will be made available shortly. ERA5-Land timely updates (hereafter called ERA5-LandT) will be synchronized with the timely updates of the ERA5 climate reanalysis (ERA5T).
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To download auxiliary land invariant parameters, please use ERA5 (see table1 of ERA5 documentation). The land-sea mask and orography (through the geopotential) fields used to produce the ERA5-Land dataset are also attached here below, already interpolated to a regular lat/lon grid of 0.1°x0.1°:
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