NOAA-CIRES-DOE 20th Century Reanalysis V3
The 20CRv3 reanalysis uses a data assimilation system and surface pressure observations to generate a four-dimensional global atmospheric dataset of weather spanning 1836 to 2015.
Only surface observations of synoptic pressure is assimilated into the NOAA’s Global Forecast System,sea surface temperature and sea ice distribution are prescribed. Temperature, pressure, winds, moisture, solar radiation and clouds, are estimated from the surface to the top of the atmosphere.
The temporal resolution of the main output is 3 hourly, however the data is also available as daily and monthly means.
The global grid used has a 75 km resolution.
More information is available from the PSL 20 Century reanalysis project and the NERSC data portal. The subdaily and member daily data was downloaded from the NERSC data portal, all the other data from the PSL data portal.
The two portal published the data differently so there are inconsistencies in the way it is stored and named.
20CRV3 at NCI
The data is stored in
Available variables are:
subdaily: TMP2m, HGT500, PRMSL, PRATE
mean_3hr: HGT_pres, RH_2m, SPFH_pres, TMP_sfc, UGRD_pres, ICEC_sfc, SOILW_depth, TMP_2m, TSOIL_depth, VGRD_10m, PRES_sfc, SPFH_2m, TMP_pres, UGRD_10m, VGRD_pres
mean_daily: prate, prmsl, tmax_2m, tmin_2m
/g/data/ua8/LE_models/20CRv3/derived. contains some fiedls derived by Zak Bailie.
HGT500 - daily mean derived from HGT500 sub-daily data
TxTn - daily maximum of 2m air temperature, derived from TMP2m sub-daily data