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WXP Product Description

Level Type and Level

Keyword Ltype Level Description
none
snd
0   No level specified
sfc 1   Surface
sfc[LLL] 1 LLL Surface, LLL > 0 Surface with LLL mb layer (used for parcel lifting)
frz 4   Freezing level
lcl 5   Lifted Condensation Level (LCL)
mwnd 6   Max wind level
trop 7   Tropopause
top 8   Top of the atmosphere (not used)
LLLmb 100 LLL Pressure level at LLL mb
LLL-UUUmb 101 LLLUUU Pressure layer from LLL0 to UUU0 mb (pressures in 10s of mb)
LLL = 190, bottom level is surface
LLL >= 200, bottom level is surface with a (LLL-200)*10 mb layer for parcels
  102   Sea level
LLLm 103 LLLL Height level at LLL m
LLL-UUUm 104 LLLUUU Height layer from LLL00 to UUU00 m (heights in 100s of m)
LLLm_ag 105 LLLLL Height level at LLL m above ground
LLL-UUUm_ag 106 LLLUUU Height layer from LLL00 to UUU00 m above ground (heights in 100s of m)
LLLsig 107 LLLL Sigma level, LLL is divided by 10000 to get actual sigma level
LLL-UUUsig 108 LLLUUU Sigma layer from LLL/100 to UUU/100
LLLlev 109 LLL Level number
LLL-UUUlev 110 LLLUUU Level number layer from LLL to UUU
LLLcm_bg 111 LLLL Height level at LLL m below ground
LLL-UUUcm_bg 112 LLLUUU Height layer from LLL to UUU m below ground (heights in 100s of cm)
LLLK 113 LLL Potential temperature level at LLL K
LLL-UUUK 114 LLLUUU Potential temperature layer from LLL K to UUU K
LLL 115 LLLL Pressure level at LLL mb above ground
LLL-UUUmb_ag 116 LLLUUU Pressure layer from LLL to UUU mb above ground
LLLeta 119 LLLL Eta level,  LLL is divided by 10000 to get actual Eta level
LLL-UUUeta 120 LLLUUU Eta layer from LLL/100 to UUU/100
whole 200   Whole atmosphere
top_frz 204   Top most freezing level
lcld_bot 212   Bottom of low cloud layer
lcld_top 213   Top of low cloud layer
lcld_lyr 214   Low cloud layer
mcld_bot 222   Bottom of middle cloud layer
mcld_top 223   Top of middle cloud layer
mcld_lyr 224   Middle cloud layer
hcld_bot 232   Bottom of high cloud layer
hcld_top 233   Top of high cloud layer
hcld_lyr 234   High cloud layer
conv_bot 242   Bottom of convective cloud layer
conv_top 243   Top of convective cloud layer
conv_lyr 244   Convective cloud layer

From GRIB PDB Octet 10-12, Level Type and Level


For further information about WXP, email technical-support@weather.unisys.com
Last updated by Dan Vietor on August 12, 1998