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These calculations are described in Vertically Integrated Mass, Moisture, Heat, and Energy Budget Products Derived from the NCEP/NCAR Reanalysis.
SOURCE:The European Centre for Medium-Range Weather Forecasts
via The NCAR SCD Data Support Section:
ECMWF ERA40 Grids
FORMAT: netCDF
GRID:Global - T63 Gaussian (192 x 96)
LEVELS: single level or vertically integrated
FIELDS:
| Description | Name | Units |
|---|---|---|
| Monthly mean surface pressure | PS | Pa |
| Monthly mean vertically integrated zonal velocity | U | kg/(m s) |
| Monthly mean vertically integrated meridional velocity | V | kg/(m s) |
| Monthly mean vertically integrated temperature | T | K kg/m2 |
| Monthly mean vertically integrated specific humidity | PW | kg/m2 |
| Monthly mean vertically integrated geopotential height* | Z | kg/m |
| Monthly mean vertically integrated kinetic energy | KE | J/m2 |
| Precipitable water tendency | QTEN | kg/(m2 s) |
| Internal energy tendency | ITEN | W/m2 |
| Kinetic energy tendency | KTEN | W/m2 |
| Latent energy tendency | LETEN | W/m2 |
| Geopotential tendency | PHISTEN | W/m2 |
| Total energy tendency | TETEN | W/m2 |
| Surface pressure tendency | PSTEN | Pa/s |
| Evaporation minus precipitation | EP | mm/day |
| Mass budget residual | MRES | Pa/s |
| Barotropic correction to zonal wind | UC | m/s |
| Barotropic correction to meridional wind | VC | m/s |
| Vertically integrated zonal temperature flux | UT | kg K/(m s) |
| Vertically integrated meridional temperature flux | VT | kg K/(m s) |
| Vertically integrated zonal geopotential height flux | UZ | kg/s |
| Vertically integrated meridional geopotential height flux | VZ | kg/s |
| Vertically integrated zonal moisture flux | UQ | kg/(m s) |
| Vertically integrated meridional moisture flux | VQ | kg/(m s) |
| Vertically integrated zonal kinetic energy flux | UK | J/(m s) |
| Vertically integrated meridional kinetic energy flux | VK | J/(m s) |
| Divergence of total energy | TEDIV | W/m2 |
| Divergence of dry static energy | DSEDIV | W/m2 |
| Divergence of latent energy | LEDIV | W/m2 |
| Divergence of kinetic energy | KEDIV | W/m2 |
| Diabatic minus frictional heating | Q1QF | W/m2 |
| Vertically Averaged Total Energy | TE | J/kg |
TIMES: Monthly means
MSS Directory: /CA/ECMWF/ERA40/MEANS/
Note: these data are only available via the NCAR MSS.
Filenames: Based on field name and time representation: ERA40_T63t_VAR_1958-2001_MM.nc,
where VAR is the capitalized variable name, e.g. ERA40_T63t_PS_1958-2001_MM.nc.
One file per field. All time steps in one file.
Current holdings: 1958-2001.
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