Add data catalog for ERA5 Reanalysis #88
Description
https://rda.ucar.edu/datasets/ds630.0/
Resources/Documentation:
- https://confluence.ecmwf.int/pages/viewpage.action?pageId=85402030#ERA5terminology:analysisandforecast;timeandsteps;instantaneousandaccumulatedandmeanratesandmin/maxparameters-Instantaneous,accumulated,meanrateandmin/maxparameters
- https://confluence.ecmwf.int/display/CKB/ERA5+data+documentation#ERA5datadocumentation-Dataorganisationandaccess
- https://apps.ecmwf.int/codes/grib/param-db