**       WINGRIDDS BASIC GRIDDED DATA FIELDS
     
    
       ******   Basic ICAO Required Fields   ******
     
TEMP > TEMPerature  (degree C)
WIND > WIND (m/s)
WKNT > Wind (KNoTs)
     
UGRD > West to East Wind Component (m/s) 
VGRD > South to North Wind Component (m/s)
     
HGHT > HeiGHT (Geopotential Meters)
MAXW |WMAX!| > Data from MAXimum Wind level
TROP > Data From TROPopause level


**     ******   Additional Meteorological Fields   ******

HGHT > Geopotential HeiGHT (meters) 
PRES > Pressure (mb)
MIXR > MIXing Ratio (g/kg)
VVEL > Vertical VELocity (Microbars/sec)

PMSL > Mean Sea Level Pressure fields, obtained without resetting LEVeL

          Note:  If mean sea level pressure (GRIB ID=002) is not 
                 available, then an attempt is made to retrieve the 
                 RUC Reduction, the NAM Model Reduction, and the 
                 Standard Atmosphere Reduction, in that order.

PRSS > Mean sea level PReSsure (Std. atm. reduction)    Set level first
PRSR > Mean sea level PReSsure (RUC reduction)    Set level first
PRSE > Mean sea level PReSsure (NAM model reduction)    Set level first

TPCP > Total Precipitation fields, obtained without resetting LEVeL (cm)
CPCP > Convective Precipitation fields, obtained without resetting LEVeL (cm)
     
TPCI > Total Precipitation fields, obtained without resetting LEVeL (in)
CPCI > Convective Precipitation fields, obtained without resetting LEVeL (in)

       NOTE:  TPCx/CPCx attempt to retrieve a 12 hour accumulation.  If this
              is not possible, then they try to obtain the longest
              accumulation (6,3,2,1) available.

TPC# > Total Precipitation fields in cm (#=hour accumulation)  no level reset
CPC# > Convective Precipitation field in cm(#=hour accumulation) no level reset


**     ******    Automatically Derived Scalar Parameters   ******
     
     
THTA > Potential Temperature   THeTA(degree K) 
RELH > Relative Humidity (%)
DWPT > DeW Point Temperature (degree C) 
TMPK > TeMPerature (degrees K)
TMPF > TeMPerature (degrees F)
THTE > Equivalent Potential Temperature   THeTa/E (degree K)
     
       ******   Automatically Derived Vector Parameters   ******
     
GEOS > GEOStrophic wind vector (m/sec) 
WSPD > Total Wind Speed (m/sec)
WDDF > Packed value of Wind Direction/speed (tens of degrees and m/sec) 
WDRC > Wind DiRCtion (degrees)
BWND > WiND Barbs (m/sec)
BKNT > Wind Barbs (KNoTs)
     
     
**     ******   Isobaric Level Specifications   ******
     
 100 >  100 hPA level data   > FL 530  (ICAO Required) 
 150 >  150 hPa level data   > FL 450  (ICAO Required) 
 200 >  200 hPa level data   > FL 390  (ICAO Required) 
 250 >  250 hPa level data   > FL 350  (ICAO Required) 
 300 >  300 hPa level data   > FL 300  (ICAO Required) 
 400 >  400 hPa level data   > FL 240  (ICAO Required) 
 500 >  500 hPa level data   > FL 180  (ICAO Required) 
 700 >  700 hPa level data   > FL 100  (ICAO Required) 
 850 >  850 hPa level data   > FL 050  (ICAO Required)
1000 > 1000 hPa level data


**     ******   Special Level Specifications   ******
TROP > TROPopause level data    (ICAO Required) 
MAXW |WMAX!| > MAXimum Wind level data  (ICAO Required)
 SFC > Earth's SurFaCe data
 MSL > Mean Sea Level data
CBAS > Cloud BASe level data
CTOP > Cloud TOP level data
0DEG > First freezing level above ground
CLVL > Adiabatic Condensation LeVeL data (parcel lifted from surface)
0DGX > Top freezing level
LCDB > Low ClouD Bottom level data
LCDT > Low ClouD Top level data
LCDL > Low ClouD Layer data
MCDB > Middle ClouD Bottom level data
MCDT > Middle ClouD Top level data
MCDL > Middle ClouD Layer data
HCDB > High ClouD Bottom level data
HCDT > High ClouD Top level data
HCDL > High ClouD Layer data

       NOTE:  No special level can begin with 0 except 0DEG, 0DGX, 0000 


**     ******   Additional Level/Layer Specifications   ******

###Z > Height above mean sea level in m (<100m)
Z### > Height above mean sea level in hm (>=100m)

###M > Height above ground in m (<100m)
M### > Height above ground in hm (>=100m)

###U > Depth below land surface in cm (<1000cm)
U### > Depth below land surface in m (>=1000cm)

S### > Sigma level number
H### > Height above sea level (x10)
I### > Isentropic level in degrees K
B### > Boundary layer in hPa (mb) above surface at the center


**     ******   Time Specifications   ******
     
 F06 >  6 hour forecast data 
 F12 > 12 hour forecast data  (ICAO Required) 
 F18 > 18 hour forecast data  (ICAO Required) 
 F24 > 24 hour forecast data  (ICAO Required) 
 F30 > 30 hour forecast data  (ICAO Required) 
 F36 > 36 hour forecast data


**     ******   Special Optional Gridded Data Fields   ******
          
LIFT > LIFTed Index, obtained without resetting LEVeL
PWAT > Precipitable Water fields, obtained without resetting LEVeL (mm) 
PWAI > Precipitable Water fields, obtained without resetting LEVeL (in)
     
     
THCK > Generates Thickness fields between LVL1 and LVL2
THWN > Generates Thermal Wind between LVL1 and LVL2




**     ******  Other Parameters commonly in GRIB data sets: ******

TEMP > TEMPerature  (degree C)
WIND > WIND (m/s)
WKNT > Wind (KnoTs)
PRES > PRESsure (mb, .1hPa)
PTND > Pressure TeNDency (mb/hr, .1hPa/hr)
HGHT > geopotential HeiGHT (m)
GHGT > Geometric HeiGhT (m)
OZON > Total  OZONe
TEMP  > TEMPerature (degree C)
VTMP > Virtual TeMPerature (degree K)
THTA > potential temperature [TheTA] (degree K)
THTE > equivalent potential temperature [TheTa E] (degree K)
DWPT > DeWPoinT temperature (degree C)
DPTD  > DeWPoint temperature Depression (degree C)
WNDD > WiND Direction (degree)
WNFF > WIND SPEED (m/sec)
UGRD > GRiD relative U wind component (m/sec)
VGRD > GRiD relative V wind component (m/sec)

SFTN > Stream FuNcTion (m**2/sec)
PSYM > montgomery stream function [PSYM] (m**2/sec**2)
VVEL > Vertical VELocity (micro bars/sec)
VTCY > absolute VorTiCitY (1/sec)
SPFH > SPeciFic Humidity (g/g)
RELH > RELative Humidity (%)
MIXR > MIXing Ratio (g/g)
PWAT > Precipitable WATer (cm)
VCRS > Vapor pressure (mb, .1hPa)
DEF. > Saturation DEFicit (mb, .1hPa)
PCRT > PreCipitation RaTe (cm/sec)
TPCP > Total PreCiPitation (cm)
LPCP > Large scale (stable) PreCiPitation (cm)
CPCP > Convective PreCiPitation (cm)
SWAT > WATer equivalent Snow depth (cm)
SNDP > Snow DePth (cm)

TCLD > Total Cloud percent (%)
CCLD > Convective ClouD percent (%)
LCLD > Low CLouD percent (%)
MCLD > Middle ClouD percent (%)
HCLD > High CLouD percent (%)
CH2O > Cloud water [H2O] (cm)
PCON > CONdensation Pressure (mb, .1hPa)
WTMP > Water TeMPerature (degree K)
TSOL > SOiL Temperature (degree K)
SWEL > significant SWELl wave height (m)
SWVR > net Short WaVe Radiation at surface (W/m**2)
LWVR > net Long WaVe Radiation at surface (W/m**2)
PRSS > mean sea level Pressure   Standard atmosphere reduction (mb, .1hPa)
PRSR > mean sea level Pressure   RUC reduction (mb, .1hPa)
PRSE > mean sea level Pressure   NAM reduction (mb, .1hPa)
LIFT >  "Surface " LIFTed index (degree K)
LFTX > "best" LiFTed index (degree K)
LFTB > "Boundary layer" LiFTed index (degree K)
KNDX > K iNDeX (degree K)
SWET > SWEeT index (degree K)

HQDV > Horizontal moisture [Q] DiVergence (g/g/sec)
VSSH > Vertical wind Speed Shear (1/sec)
PTN3 > 3 hour interval Pressure TeNdency (mb/sec)
CRAN > Categorical RaiN (1/0 = Yes/No)
CZRN > Categorical freeZing RaiN (1/0 =Yes/No)
CPEL > Categorical ice PELlets (1/0 = Yes/No)
CSNO > Categorical SNOw (1/0 = Yes/No)
CWTR > Cloud WaTeR (cm)
CINH > Convective INHibition (J/kg)
CAPE > Convective Available Potential Energy (J/kg)
TKEN > Turbulent  KENetic energy (J/kg)
THTV > Virtual potential temperature [TheTa V] (degree K)
HLCY > storm relative HeLiCitY 

POPP > Probability Of PreciPitation (%)
POZP > Probability Of froZen Precipitation (%)
POFP > Probability Of Freezing Precipitation (%)
USTM > U component of STorM relative motion (m/sec)
VSTM > V component of STorM relative motion (m/sec)
PSNC > Percent SNow Cover (%)
