Reanalysis Data Product List A researcher using the reanalysis products should be aware of how the various outputs are produced before assuming they are uniformly reliable. A classification flag from A to D is used in this list to indicate the analysis process involved. Flag Comment A Analysis based strongly on observed data B Analysis partially based on observed data but significantly influenced by the model characteristics C Analysis based on model alone D Climatologies, fixed and model independent The pressure stacks have 17 pressure levels. They are at 1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10 mb. The isentropic stacks have 11 theta levels: 270, 280, 290, 300, 315, 330, 350, 400, 450, 550, 650 K. The sigma stacks have 28 sigma levels: .9950, .9821, .9644, .9425, .9159, .8838, .8458, .8014, .7508, .6943, .6329, .5681, .5017, .4357, .3720, .3125, .2582, .2101, .1682, .1326, .1028, .0782, .0580, .0418, .0288, .0183, .0101, .0027 ------------------------------------------------------------------------- File_Type: pgb.f00 (analysis), pgb.f06 (1st guess), pgb.fhhh (8-day forecast) *on pressure stacks *Regular 2.5 degree latitude-longitude grid (144x73) *All fields are instantaneous values at a given time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- GRIB A Geopotential height (gpm) at 17 pressure levels GRIB A u-wind (m/s) 17 pressure levels GRIB A v-wind (m/s) 17 pressure levels GRIB A Temperature (K) 17 pressure levels (virtual?) GRIB B Pressure vertical velocity (Pa/s), 12 pressure levels (1000 to 100 hPa) GRIB B Relative humidity (%) 8 pressure levels (1000 to 300 hPa) GRIB A Absolute vorticity (/s) 17 pressure levels GRIB A u-wind of the lowest 30 hPa layer (m/s) GRIB A v-wind of the lowest 30 hPa layer (m/s) GRIB B Temperature of the lowest 30 hPa layer (K) GRIB B Relative humidity of the lowest 30 hPa (%) GRIB B Pressure at the surface (Pa) GRIB B Precipitable water (kg/m2) GRIB B Relative humidity of the total atmospheric column (%) GRIB A Temperature at the tropopause (K) GRIB A Pressure at the tropopause (Pa) GRIB A u-wind at the tropopause (m/s) GRIB A v-wind at the tropopause (m/s) GRIB A Vertical speed shear at the tropopause (1/s) GRIB B Surface lifted index (K) GRIB B "Best" (4-layer) lifted index (K) GRIB A Temperature at the maximum wind level (K) GRIB A Pressure at the maximum wind level (Pa) GRIB A u-wind at the maximum wind level (m/s) GRIB A v-wind at the maximum wind level (m/s) GRIB D Geopotential height at the surface (gpm) GRIB A Pressure reduced to MSL (Pa) GRIB B Relative humidity in 3 sigma layers:0.44-0.72,0.72-0.94,0.44-1.0 (%) GRIB B Potential temperature at the lowest sigma level (K) GRIB B Temperature at the lowest sigma level (K) GRIB B Pressure vertical velocity at the lowest sigma level (Pa/s) GRIB B Relative humidity at the lowest sigma level (%) GRIB B u-wind at the lowest sigma level (m/s) GRIB B v-wind at the lowest sigma level (m/s) ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: grb2d (analysis) *2-dimensional diagnostic file *Gaussian grid (192 x 94) *Fields are either 6-hour forecast instantaneous values or averages. ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- GRIB C Cloud forcing net longwave flux at the top of atmosphere (W/m2) GRIB C Cloud forcing net longwave flux at the surface (W/m2) GRIB C Cloud forcing net longwave flux for total atmospheric column (W/m2) GRIB C Cloud forcing net solar flux at the top of the atmosphere (W/m2) GRIB C Cloud forcing net solar flux at the surface (W/m2) GRIB C Cloud forcing net solar flux for total atmospheric column (W/m2) GRIB C Convective precipitation rate (kg/m2/s) GRIB C Clear sky downward longwave flux at the surface (W/m2) GRIB C Clear sky downward solar flux at the surface (W/m2) GRIB C Clear sky upward longwave flux at the top of the atmosphere (W/m2) GRIB C Clear sky upward solar flux at the top of atmosphere (W/m2) GRIB C Clear sky upward solar flux at the surface (W/m2) GRIB C Cloud work function (J/Kg) GRIB C Downward longwave radiation flux at the surface (W/m2) GRIB C Downward solar radiation flux at the top of the atmosphere (W/m2) GRIB C Downward solar radiation flux at the surface (W/m2) GRIB C Ground heat flux (W/m2) GRIB D Ice concentration (ice=1;no ice=0) (1/0) GRIB D Land-sea mask (1=land;0=sea) (integer) GRIB C Latent heat flux (W/m2) GRIB C Near IR beam downward solar flux at the surface (W/m2) GRIB C Near IR diffuse downward solar flux at the surface (W/m2) GRIB C Potential evaporation rate (w/m2) GRIB C Precipitation rate (kg/m2/s) GRIB C Pressure at high cloud top (Pa) GRIB C Pressure at high cloud base (Pa) GRIB C Pressure at middle cloud top (Pa) GRIB C Pressure at middle cloud base (Pa) GRIB C Pressure at low cloud top (Pa) GRIB C Pressure at low cloud base (Pa) GRIB C Pressure at the surface (Pa) GRIB C Run off (kg/m2 per 6 hour interval) GRIB D Surface roughness (m) GRIB C Nearby model level of high cloud top (integer) GRIB C Nearby model level of high cloud base (integer) GRIB C Nearby model level of middle cloud top (integer) GRIB C Nearby model level of middle cloud base (integer) GRIB C Nearby model level of low cloud top (integer) GRIB C Nearby model level of low cloud base (integer) GRIB C Sensible heat flux (W/m**2) GRIB C Volumetric soil moisture content (fraction) (2 layers) GRIB B Specific humidity at 2m (kg/kg) GRIB C Total cloud cover of high cloud layer (%) GRIB C Total cloud cover of middle cloud layer (%) GRIB C Total cloud cover of low cloud layer (%) GRIB B Maximum temperature at 2m (K) GRIB B Minimum temperature at 2m (K) GRIB AB Temperature at the surface (skin temperature) (K) GRIB C Temperature of the soil layer (3 layers) (K) GRIB B Temperature at 2m (K) GRIB C Temperature of high cloud top (K) GRIB C Temperature of low cloud top (K) GRIB C Temperature of middle cloud top (K) GRIB C Zonal gravity wave stress (N/m2) GRIB B Zonal component of momentum flux (N/m2) GRIB B u-wind at 10m (m/s) GRIB C Upward longwave radiation flux at the top of the atmosphere (W/m2) GRIB C Upward longwave radiation flux at the surface (W/m2) GRIB C Upward solar radiation flux at the top of the atmosphere (W/m2) GRIB C Upward solar radiation flux at the surface (W/m2) GRIB C Meridional gravity wave stress (N/m2) GRIB C Visible beam downward solar flux at the surface (W/m2) GRIB C Visible diffuse downward solar flux at the surface (W/m2) GRIB C Meridional component of momentum flux (N/m2) GRIB B v-wind at 10m (m/s) GRIB C Water equivalent of accum. snow depth (kg/m2) ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: grb3d (analysis) *On sigma stacks *3-dimensional diagnostic file *Gaussian grid (192 x 94) on 28 model levels *All fields are average of 6 hour integration starting from a given time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- GRIB C Deep convective heating rate (K/s) GRIB C Deep convective moistening rate (kg/kg/s) GRIB C Large scale condensation heating rate (K/s) GRIB C Longwave radiative heating rate (K/s) GRIB C Shallow convective heating rate (K/s) GRIB C Shallow convective moistening rate (kg/kg/s) GRIB C Solar radiative heating rate (K/s) GRIB C Vertical diffusion heating rate (K/s) GRIB C Vertical diffusion moistening rate (kg/kg/s) GRIB C Vertical diffusion zonal accel. (m/s/s) GRIB C Vertical diffusion meridional accel. (m/s/s) ------------------------------------------------------------------------- File_Type: grbsanl (analysis), grbsf06 (1st guess) *On sigma stacks *Gaussian grid (192 x 94) on 28 model levels or surface *All fields are instantaneous values at a specified time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- GRIB A Relative vorticity (28 levels) (/s) GRIB B Divergence (28 levels) (/s) GRIB A Temperature (28 levels) (K) GRIB B Specific humidity (28 levels) (kg/kg) GRIB A x-gradient of log pressure (surface) (1/m) GRIB A y-gradient of log pressure (surface) (1/m) GRIB A u-wind (28 levels) (m/s) GRIB A v-wind (28 levels) (m/s) GRIB A Pressure (surface) (Pa) GRIB A Geopotential height (surface) (gpm) GRIB A x-gradient of height (surface) (m/m) GRIB A y-gradient of height (surface) (m/m) ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: theta (analysis) *On isentropic stacks *2.5x2.5 latitude,longitude grid (144 x 73) most on 10 isentropic levels *All fields are instantaneous values at a specified time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- GRIB A Potential temperature (surface) (K) GRIB A Temperature (K) GRIB A u-wind (m/s) GRIB A v-wind (m/s) GRIB B Pressure vertical velocity (Pa/s) GRIB B Relative humidity (%) GRIB A Montgomery stream function (m2/s2) GRIB B Brunt-Vaisala frequency squared (1/s2) GRIB B Potential vorticity (m2/s/kg) ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: znl.f00 (analysis), znl.f06 (1st guess) *Zonal diagnostic file *Average over 90S-60S, 60S-30S, 30S-30N, 30N-60N, 60N-90N and global *Unmarked fields are instantaneous values at a given time *(Av) indicates average during the 6 hour integration ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- CRAY A u component of wind (m/s) at 28 model levels CRAY A v component of wind (m/s) at 28 model levels CRAY A virtual temperature (K) at 28 model levels CRAY B specific humidity (g/g) at 28 model levels CRAY B squared vorticity (1/s2) at 28 model levels CRAY C squared divergence (1/s2) at 28 model levels CRAY B pressure vertical velocity (Pa/s) at 28 model levels CRAY A temperature (K) at 28 model levels CRAY B relative humidity (%) at 28 model levels CRAY B kinetic energy (m2/s2) at 28 model levels CRAY C convective heating (K/s) at 28 model levels (Av) CRAY C large scale heating (K/s) at 28 model levels (Av) CRAY C shallow convection heating (K/s) at 28 model levels (Av) CRAY C vertical diffusion heating (K/s) at 28 model levels (Av) CRAY C convective moistening (g/g/s) at 28 model levels (Av) CRAY C shallow convection moistening (g/g/s) at 28 model levels (Av) CRAY C vertical diffusion moistening (g/g/s) at 28 model levels (Av) CRAY C zonal accel by vertical diffusion (m/s2) at 28 model levels (Av) CRAY C meridional accel by vertical diffusion (m/s2) at 28 model levels CRAY C short wave radiation heating (K/s) at 28 model levels (Av) CRAY C long wave radiation heating (K/s) at 28 model levels (Av) CRAY C total precipitation (Kg/m2) (Av) CRAY C convective precipitation (Kg/m2) (Av) CRAY C sensible heat flux (w/m2) (Av) CRAY C latent heat flux (w/m2) (Av) CRAY B zonal stress (dyn/m2) (Av) CRAY B meridional stress (dyn/m2) (Av) CRAY C rain area coverage (%) CRAY C convective rain area coverage (%) CRAY B surface pressure (hPa) CRAY C surface skin temperature (K) CRAY C soil wetness (cm) CRAY C snow depth (m) CRAY C 10 cm deep soil temperature (K) CRAY C 50 cm deep soil temperature (K) CRAY D 500 cm deep soil temperature (K) CRAY C surface net short wave flux (W/m2) (Av) CRAY C surface net long wave flux (W/m2) (Av) CRAY B relative humidity at the lowest model level (%) CRAY B virtual temp at the lowest model level (K) CRAY B temperature at the lowest model level (K) CRAY B specific humidity at the lowest model level (K) CRAY D surface roughness (m) CRAY D land sea sea-ice mask (int) CRAY C zonal accel by gravity wave drag (m/s2) (Av) CRAY C meridional accel by gravity wave (m/s2) (Av) CRAY B surface torque (g/m2/s2) (Av) CRAY C gravity wave drag torque (g/m2/s2) (Av) CRAY B mountain torque (g/m2/s2) (Av) CRAY B total angular momentum (m2/s) CRAY B planetary angular momentum (m2/s) ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: sanl (analysis), sges (1st guess) *Restart spectral coefficient files *Sigma spectral (28 model levels) or Gaussian grid (192 x 94) *All fields are instantaneous values at a specified time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- CRAY D Surface geopotential CRAY B Natural log of surface pressure CRAY A Virtual temperature CRAY B Divergence CRAY A Vorticity CRAY B Specific humidity ------------------------------------------------------------------------- ------------------------------------------------------------------------- File_Type: sfcanl (analysis), bges (1st guess) *Restart surface files (spectral coefficient?) *Gaussian grid (192 x 94) *All fields are instantaneous values at a specified time ------------------------------------------------------------------------- Format Flag Description ------------------------------------------------------------------------- CRAY C earth surface temperature (K) CRAY C soil moisture level 1 (% volume) CRAY C soil moisture level 2 (% volume) CRAY C snow depth (m) CRAY C soil temperature level 1 (K) CRAY C soil temperature level 2 (K) CRAY C soil temperature level 3 (K) CRAY D surface roughness length (m) CRAY C convective cloud cover (%) CRAY C convective cloud bottom height (sigma) CRAY C convective cloud top height (sigma) CRAY C albedo (fraction) CRAY C snow/ice/land mask CRAY D minimum stomatal resistance (s/m) CRAY C canopy water content (m) CRAY C ratio of 10m and lowest sigma level winds (fraction) ------------------------------------------------------------------------- The following file_types will be added later. ------------------------------------------------------------------------- File_Type: prepqm (observation) prs(analysis) ipvanl(analysis) 2D (analysis) 3D (analysis) grib (analysis) optavg (analysis) flux.fhhh (8-day forecast) -------------------------------------------------------------------------