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EMC > NEMS >
NOAA Environmental Modeling System

Output



There are several files that contain output from the various NEMS regression tests some of which contain GRIB files. To convert GRIB files to GrADS-readable format, start in the directory in which your GRIB files are located. Submit the following commands to convert your GRIB file to a GrADS index file (*.idx) and a GrADS readable file (*.ctl). It may be wise to set up an alias in your .bashrc file for grib2ctl:

'/u/Wesley.Ebisuzaki/bin/grib2ctl.pl your.grib.file > newfile.ctl'
'gribmap -E -i newfile.ctl'

Where your.grib.file = GFSPRS.GrbF06 (or something similar) and newfile.ctl = your new GrADS readable filename. You should now be able to view your NEMS GFS output in GrADS.

Click on any output type below to display output information. The resulting lists show basic information about the output variables. More information can be found in the individual output files.


Output from NMM-B history (nmm_b_history*.ctl) files


0D integer (scalar):

NameDescriptionNameDescription
avgmaxlenLength in seconds of accumulation window for avg/max fieldsmdiminoutMinimum mean size of large, precipitating ice particles for use in Ferrier-based microphysics tables (microns)
cu_physicsConvection physics, 1--> KF, 2--> BMJ, 3--> GD, 4--> SAS, 5--> RASmdrmaxoutMaximum mean size of rain drops for use in Ferrier-based microphysics tables (microns)
i_par_staI grid point of parent containing the SW corner of a nestmdrminoutMinimum mean size of rain drops for use in Ferrier-based microphysics tables (microns)
ihrstStarting forecast hournclodNumber of time steps for accumulating cloud fractions; used to calculated time-averaged cloud fractions
imFull west-east array dimensionnheatNumber of time steps for accumulating diabatic heating from convection & microphysics; used to calculate time-averaged values
ivegsrcVegetation map identifier, 0--> USGS, 1--> IGBPnphsNumber of time steps between physics calls
j_par_staJ grid point of parent containing the SW corner of a nestnprecTime steps for precipitation accumulation
jmFull south-north array dimensionnrdlwNumber of time steps for accumulating longwave radiation fluxes and temperature tendencies; used to calculate time-averaged values
lmNumber of model layersnrdswNumber of time steps for accumulating shortwave radiation fluxes and temperature tendencies; used to calculate time-averaged values
mdimaxoutMaximum mean size of large, precipitating ice particles for use in Ferrier-based microphysics tables (microns)nsrfcNumber of time steps for accumulating various surface quantities (snowfall; potential & surface evaporation; sensible, latent, & ground heat fluxes; surface & below ground runoff)


0D real (scalar):

NameDescriptionNameDescription
dlmdGrid increment, delta lambda, degreesptPressure at the top
dphdGrid increment, delta phi, degreestlm0dCentral geographic longitude of grid (degress, positive east)
dtDynamics time steptph0dCentral geographic latitude of grid (degrees)
dyhDelta y, h pointststartStarting forecast hour
pdtopDepth of pressure range in hybrid v coordinate


1D integer:

NameDescription
idatDate of initial data, day, month, year


1D real:

NameDescriptionNameDescription
dsg1Thicknesses of sigma layers in pressure rangesg2Sigma at interfaces in sigma range
dsg2Thicknesses of sigma layers in sigma rangesgml1Sigma at midlayers in pressure range
dxhDelta x, h points (m)sgml2Sigma at midlayers in sigma range
sg1Sigma at interfaces in pressure rangesldpthThickness of soil layers (m) from top


2D integer:

NameDescription
isltypSoil type
ivgtypVegetation type
ncfrcvNumber of times convective cloud fraction >0 between outputs
ncfrstNumber of times stratiform cloud fraction >0 between outputs


2D real:

NameDescriptionNameDescription
acfrcvAccumulated convective cloud fractions between outputsqshSurface specific humidity (kg/kg)
acfrstAccumulated statiform cloud fractions between outputsqshltrSpecific humidity at 2m (kg/kg)
acprecAccumulated precip (m)qwbsInstantaneous latent heat flux (W/m^2)
acsnomAccumulated melted snowqz0Specific humidity at top of viscous sublayer (kg/kg)
acsnowAccumulated snowradotLongwave from the ground (W/m^2)
acutimPost0/bufr counter in summing cloud processes (conv, grid)refdmaxHourly maximum simulated reflectivity at 1000m AGL (dbZ)
akhs_outSurface exchange coefficient for T and q (m^2/s)rh02maxHourly maximum relative humidity at 2m (%)
akhsavgTime-averaged surface exchange coefficient for T and q (m^2/s)rh02minHourly minimum relative humidity at 2m (%)
akms_outSurface exchange coefficient for momentum (m^2/s)rlwinLongwave down at ground (W/m^2)
akmsavgTime-averaged surface exchange coefficient for momentum (m2/s)rlwtoaLongwave at top of atmosphere (W/m^2)
albaseBase albedorswinShortwave down at ground (W/m^2)
albedoDynamic albedorswincClear-sky shortwave down at ground (W/m^2)
alwinAccumulated LW down at surface (W/m^2)rswoutShortwave up at ground (W/m^2)
alwoutAccumulated LW from the ground (W/m^2)sfcevpSurface evaporation
alwtoaAccumulated LW at top of atmosphere (W/m^2)sfcexcAnother surface exchange coefficient for T and q (m^2/s) [see akhs_out]
aphtimPost0/bufr counter in summing other physics (turb, land, rad)sfclhxAccumulated surface latent heat flux (W/m^2)
ardlwCounter in summing LW radiation fluxsfcshxAccumulated surface sensible heat flux (W/m^2)
ardswCounter in summing SW radiation fluxsiSnow depth (mm)
asrfcCounter in summing surface fluxessiceSea ice fraction
aswinAccumulated SW down at surface (W/m^2)sigt4Sigma*T**4 (W/m^2)
aswoutAccumulated SW up at ground (W/m^2)smSea mask (1 → sea, 0 → land)
aswtoaAccumulated SW at top of atmosphere (W/m^2)smstavSoil moisture availability for evapotranspiration
avcnvcCounter in summing latent heating from convectionsmstotTotal soil moisture
avrainCounter in summing latent heating from grid microphysicssnoLiquid water snow amount (mm)
bgroffSubsurface runoff (mm)snoavgPercentage of time point is snow covered
cfrachHigh atmosphere cloud fractionsnopcxSnow phase change heat flux (W/m^2)
cfraclLow atmosphere cloud fractionsnowcSnow cover (fraction: 0--1)
cfracmMid atmosphere cloud fractionsoiltbDeep ground soil temperature (K)
cldefiConvective cloud efficiencyspd10maxHourly maximum wind speed at 10m (m/s)
cmcCanopy moisture (m)srTimestep mass ratio of snow:precipitation
cnvbotLowest convective cloud bottom model layer between outputsssroffSurface runoff (mm)
cnvtopHighest convective cloud top model layer between outputssstSea surface temperature (K)
cprateInstantaneous convective precipitationsubshxAccumulated deep soil heat flux (W/m^2)
cupptConvective precipitation between radiation calls (m)t02maxHourly maximum temperature at 2m (K)
cuprecConvective precipitation (m)t02minHourly minimum temperature at 2m (K)
czenCurrent cosine of solar zenith anglet10Temperature at 10m (K)
czmeanMean cosine of solar zenith angle between radiation callst10avgTemperature at 10m averaged in time (K)
dnvvelmaxHourly maximum downard vertical motion 400 hPa to sfc (m/s)tgDeep ground soil temperature (K)
epsrSurface longwave emissivityth10Theta at 10m (K)
fisSurface geopotential (m^2/s^2)thsSurface theta (K)
grnflxDeep soil heat flux (W/m^2)thz0Theta at top of viscous sublayer (K)
hbotdBottom model layer of deep convective cloud for outputtlmaxHourly maximum temperature
hbotsBottom model layer of shallow convective cloud for outputtlminHourly minimum temperature
htopdTop model layer of deep convective cloud for outputtshltrTheta at 2m again (K)
htopsTop model layer of shallow convective cloud for outputtwbsInstantaneous sensible heat flux (W/m^2)
lspaLand surface precipitation accumulationu10U at 10m (m/s)
massioutPrecipitation ice mass table in fer, fer_hires microphysicsu10maxHourly maximum U at 10m (m/s)
massroutRain mass table in fer, fer_hires microphysicsuphlmaxHourly maximum updraft helicity (m^2/s^2)
mixhtMixed layer height (m)upvvelmaxHourly maximum upward vertical motion 400hPa to sfc (m/s)
mxsnalMaximum deep snow albedoustarFriction velocity (m/s)
pblhPlanetary boundary layer (PBL) height (m)uz0U component at top of viscous sublayer (m/s) (H points)
pdPressure difference, sigma range (Pa)v10V at 10m (m/s)
potevpAccumulated potential evaporation (m)v10maxHourly maximum V at 10m (m/s)
potflxEnergy equivalent of potevp (W/m^2)vegfrcVegetation fraction
precPrecipitation within physics timestep (m)vlatLatitudes of V points (radians)
psfcSurface pressure (Pa)vlonLongitudes of V points (radians)
psfcavgPressure at surface (Pa) averaged in timevz0V component at top of viscous sublayer (m/s) (H points)
pshltrPressure at 2-m (Pa)z0Roughness length (m)
q10Specific humidity at 10m (kg/kg)


3D real:

NameDescriptionNameDescription
cldfraCloud fractionrswttRadiative T tendency, shortwave (K/s)
cwTotal condensate (kg/kg)sh2o3D unfrozen soil moisture/soil liquid water
dwdtVertical acceleration, correction factor (m/s^2)smc3D total soil moisture content (volumetric fraction)
exch_hTurbulent exchange coefficient for heat (m^2/s)stc3D soil temperature (K)
f_iceFraction of condensate that is icetSensible temperature (K)
f_rainRain fraction of liquid part of CWMtcucnAccumulated convective T tendency (K/s)
f_rimefRime factortrainAccumulated stratiform T tendency (K/s)
o3OzoneuU wind component (m/s)
omgalfOmega-alpha (K)vV wind component (m/s)
pintNonhydrostatic interface pressure (Pa)wVertical velocity at midlayers (m/s)
qSpecific humidity (kg/kg)w_totTotal vertical velocity at midlayers (m/s)
q22*tke (m^2/s^2)xlen_mixMixing length (m)
rlwttRadiative T tendency, longwave (K/s)


4D real:

NameDescription
mpratesMicrophysics source and sink terms