WMO Mandatory and Recommended Global Climate Reanalysis Products
Mandatory products – digital data
Giovanni - WMO Climate Reanalysis Mandatory Data Portal
All MERRA-2 digital data can be accessed through the GES DISC. Note that the subsetting utility allow for picking time, domain and variables.
| Variable (MERRA-2 varname) | Links (frequency) |
|---|---|
| Total precipitation (PRECTOT, PRECTOTCORR) | 1Hr , Monthly , Climatology |
| Pressure (PS) | 1Hr , Monthly , Climatology |
| Mean sea level pressure (SLP) | 1Hr , Monthly , Climatology |
| Sea surface temperature (TS) | 1Hr , Monthly , Climatology |
| Land mask (FRLAND, FRLANDICE) | Constant |
| Topography (PHIS - Surface Geopotential) | Constant |
| Sea ice cover (FRSEAICE) | 1Hr , Monthly |
| Water Equivalent of Snow Cover (SNOMAS) | 1Hr , Monthly |
| Surface Incoming short-wave radiation (SWGDN) | 1Hr , Monthly , Climatology |
| TOA Outgoing long-wave radiation (LWTUP) | 1Hr , Monthly , Climatology |
| 2m Specific Humidity (Q2M) | 1Hr , Monthly |
| 2m Temperature (T2M) | 1Hr , Monthly , Climatology |
| 10 Zonal and Meridional wind (U10M, V10M) | 1Hr , Monthly , Climatology |
| Geopotential height (H, 3D P levels) | 3Hr , Monthly , Climatology |
| Temperature (T, 3D P levels) | 3Hr , Monthly , Climatology |
| Zonal and meridional wind velocity (U,V 3D P levels) | 3Hr , Monthly , Climatology |
| Specific humidity (QV, 3D P levels) | 3Hr , Monthly , Climatology |
The climatology links missing above will be filled in following the next update to the climatology holdings.
2m Temperature, Global Average Monthly Mean Time series can be visualized and downloaded at Giovanni .
The MERRA-2 File Specification document describes the native data formats and data available through MERRA-2 routine production. Several ancillary post processed data collections are also available and documented here.
Recommended products – digital data
A daily climatology of the mandatory data products listed above is under development.
Recommended products – map visualization
Spatial maps of many of the mandatory products listed above can be found at the GMAO FLUID project pages . Others are being included over time.
The Giovanni MERRA-2 portal provides access to data visualization, statistical analysis and download.
The NOAA PSL Web-based Reanalysis Intercomparison Tool (WRIT) provides intercomparison of many reanalyses monthly means and statistical analysis.
