https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-land?tab=overview

ERA5-Land hourly data from 1981 to present

Hong can only found Dec 1, 2020 data on Feb 19, 2021. 

2022-02-02. Hong found the title changed to "1950 to present", and resolution changed to 0.1 degree with a resolution about 9km.