The ERA5 dataset is a reanalysis of hourly meteorological conditions back to 1979. The dataset combines a weather model with observational data from satellites and ground sensors to build a consistent long-term record of our climate. … It contains estimates of atmospheric variables such as air temperature, pressure and wind at different altitudes, as well as surface variables such as rainfall, soil moisture content and ocean wave height. ERA5 is replacing ECMWF’s previous atmospheric reanalysis, ERA-Interim, and will be extended even further in the course of this year with meteorological data going back to 1950.
Parenthetically, “data” is a plural word.
Thanks much for that info. So Climate Change “measurements” aren’t even measurements. They’re computer models of some sort.
As anyone who has done even a bit of programming knows, all you’ve got to do is tweak one line of code out of a thousand - and you can get any result you want.