GPV (JMA) |
JRA-55 (JMA) |
NCEP Reanalysis-1, 2 (NCAR) |
ERA5 (ECMWF) |
GEOS FP-IT (GMAO, NASA GSFC) |
MERRA2 (GMAO, NASA GSFC) |
HRRR (NOAA) |
|
---|---|---|---|---|---|---|---|
Meteorological element | 0, 3, 6 hour forecast | reanalysis | reanalysis | forecast + reanalysis | NRT Assimilation products | reanalysis | 0 ~ 24 hour forecast |
Grid | 0.5 [deg.] | 1.25 [deg.] | 2.5 [deg.] | 0.25 [deg.] | 0.625 x 0.5 [deg.] | 0.625 x 0.5 [deg.] | 3 x 3 [km] |
Vertical layer | 21 pressure levels | 37 pressure levels | 17 pressure levels | 37 pressure levels | 42 pressure levels | 42 pressure levels | 42 pressure levels |
Delivery frequency | 4 times/day (00, 06, 12, 18 UT) |
4 times/day (00, 06, 12, 18 UT) |
4 times/day (00, 06, 12, 18 UT) |
hourly | Hourly, 3-hourly | hourly, 3-hourly, or 6-hourly | hourly |
Delivery configuration | FTP transfer | HTTP transfer | HTTP transfer | Climate Data Store (CDS) API | GES-DISC | GES-DISC | HTTP transfer, AWS |
Data format | grib2 | grib | grib | grib2 | NetCDF-4 | NetCDF-4/HDF-5 | grib2 |
Data latency | NRT | NRT | NRT (Reanalsys-1)Approx. 2 months (Reanalsys-2) |
2-5 days (ERA5T) 2-3 months (final product) |
NRT | Approx. one month | NRT |
Remarks | GOSAT L2 processing, calibration | GOSAT-2 L2 processing | OCO-2 L2 processing | USA only |