grib2数据降水参量

一颗梅子在南京

问一个问题，grib2数据处理所得的ctl中哪个参量是降水量呀？
只看到了PWATclm这个参量与降水有关，但这个是将大气层看做是一个整层的参量，不知道可不可以直接当做是降落到地面的降水量来处理，另外降水量的单位一般是mm吧
PWATclm  0,200,0   0,1,3 ** entire atmosphere (considered as a single layer) none Precipitable Water [kg/m^2]


以下是ctl中的所有变量：
no4LFTXsfc  0,1,0   0,7,193 ** surface none Best (4 layer) Lifted Index [K]
no5WAVH500mb  0,100,50000   0,3,193 ** 500 mb none 5-Wave Geopotential Height [gpm]
ABSVprs   26,100  0,2,10 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none Absolute Vorticity [1/s]
CAPEsfc  0,1,0   0,7,6 ** surface none Convective Available Potential Energy [J/kg]
CAPE180_0mb 0,108,18000,0   0,7,6 ** 180-0 mb above ground none Convective Available Potential Energy [J/kg]
CAPE255_0mb 0,108,25500,0   0,7,6 ** 255-0 mb above ground none Convective Available Potential Energy [J/kg]
CINsfc  0,1,0   0,7,7 ** surface none Convective Inhibition [J/kg]
CIN180_0mb 0,108,18000,0   0,7,7 ** 180-0 mb above ground none Convective Inhibition [J/kg]
CIN255_0mb 0,108,25500,0   0,7,7 ** 255-0 mb above ground none Convective Inhibition [J/kg]
CLWMRprs   21,100  0,1,22 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100) none Cloud Mixing Ratio [kg/kg]
CPOFPsfc  0,1,0   0,1,39 ** surface none Percent frozen precipitation [%]
CWATclm  0,200,0   0,6,6 ** entire atmosphere (considered as a single layer) none Cloud Water [kg/m^2]
DPT2m  0,103,2   0,0,6 ** 2 m above ground none Dew Point Temperature [K]
GUSTsfc  0,1,0   0,2,22 ** surface none Wind Speed (Gust) [m/s]
HGTsfc  0,1,0   0,3,5 ** surface none Geopotential Height [gpm]
HGTprs   26,100  0,3,5 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none Geopotential Height [gpm]
HGT2pv  0,109,2e-06   0,3,5 ** PV=2e-06 (Km^2/kg/s) surface none Geopotential Height [gpm]
HGTneg2pv  0,109,-2e-06   0,3,5 ** PV=-2e-06 (Km^2/kg/s) surface none Geopotential Height [gpm]
HGTtop0C  0,204,0   0,3,5 ** highest tropospheric freezing level none Geopotential Height [gpm]
HGT0C  0,4,0   0,3,5 ** 0C isotherm none Geopotential Height [gpm]
HGTmwl  0,6,0   0,3,5 ** max wind none Geopotential Height [gpm]
HGTtrop  0,7,0   0,3,5 ** tropopause none Geopotential Height [gpm]
HLCYl103_103 0,103,3000,0   0,7,8 ** 3000 m above ground - 0 m above ground none Storm Relative Helicity [m^2/s^2]
HPBLsfc  0,1,0   0,3,196 ** surface none Planetary Boundary Layer Height [m]
ICAHTmwl  0,6,0   0,3,3 ** max wind none ICAO Standard Atmosphere Reference Height [m]
ICAHTtrop  0,7,0   0,3,3 ** tropopause none ICAO Standard Atmosphere Reference Height [m]
ICECsfc  0,1,0   10,2,0 ** surface none Ice Cover [Proportion]
LANDsfc  0,1,0   2,0,0 ** surface none Land Cover (1=land, 0=sea) [Proportion]
LFTXsfc  0,1,0   0,7,192 ** surface none Surface Lifted Index [K]
MSLETmsl  0,101,0   0,3,192 ** mean sea level none MSLP (Eta model reduction) [Pa]
O3MRprs   26,100  0,14,192 ** (400 350 300 250 200 150 100 70 50 30 20 10) none Ozone Mixing Ratio [kg/kg]
PLPL255_0mb 0,108,25500,0   0,3,200 ** 255-0 mb above ground none Pressure of level from which parcel was lifted [Pa]
POTsig995  0,104,0.995   0,0,2 ** 0.995 sigma level none Potential Temperature [K]
PRESsfc  0,1,0   0,3,0 ** surface none Pressure [Pa]
PRES80m  0,103,80   0,3,0 ** 80 m above ground none Pressure [Pa]
PRES2pv  0,109,2e-06   0,3,0 ** PV=2e-06 (Km^2/kg/s) surface none Pressure [Pa]
PRESneg2pv  0,109,-2e-06   0,3,0 ** PV=-2e-06 (Km^2/kg/s) surface none Pressure [Pa]
PRESmwl  0,6,0   0,3,0 ** max wind none Pressure [Pa]
PREStrop  0,7,0   0,3,0 ** tropopause none Pressure [Pa]
PRMSLmsl  0,101,0   0,3,1 ** mean sea level none Pressure Reduced to MSL [Pa]
PWATclm  0,200,0   0,1,3 ** entire atmosphere (considered as a single layer) none Precipitable Water [kg/m^2]
RHprs   26,100  0,1,1 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none Relative Humidity [%]
RH2m  0,103,2   0,1,1 ** 2 m above ground none Relative Humidity [%]
RHsg330_1000 0,104,0.33,1   0,1,1 ** 0.33-1 sigma layer none Relative Humidity [%]
RHsg440_1000 0,104,0.44,1   0,1,1 ** 0.44-1 sigma layer none Relative Humidity [%]
RHsg720_940 0,104,0.72,0.94   0,1,1 ** 0.72-0.94 sigma layer none Relative Humidity [%]
RHsg440_720 0,104,0.44,0.72   0,1,1 ** 0.44-0.72 sigma layer none Relative Humidity [%]
RHsig995  0,104,0.995   0,1,1 ** 0.995 sigma level none Relative Humidity [%]
RH30_0mb 0,108,3000,0   0,1,1 ** 30-0 mb above ground none Relative Humidity [%]
RHclm  0,200,0   0,1,1 ** entire atmosphere (considered as a single layer) none Relative Humidity [%]
RHtop0C  0,204,0   0,1,1 ** highest tropospheric freezing level none Relative Humidity [%]
RH0C  0,4,0   0,1,1 ** 0C isotherm none Relative Humidity [%]
SNODsfc  0,1,0   0,1,11 ** surface none Snow Depth [m]
SOILW0_10cm 0,106,0,0.1   2,0,192 ** 0-0.1 m below ground none Volumetric Soil Moisture Content [Fraction]
SOILW10_40cm 0,106,0.1,0.4   2,0,192 ** 0.1-0.4 m below ground none Volumetric Soil Moisture Content [Fraction]
SOILW40_100cm 0,106,0.4,1   2,0,192 ** 0.4-1 m below ground none Volumetric Soil Moisture Content [Fraction]
SOILW100_200cm 0,106,1,2   2,0,192 ** 1-2 m below ground none Volumetric Soil Moisture Content [Fraction]
SPFH2m  0,103,2   0,1,0 ** 2 m above ground none Specific Humidity [kg/kg]
SPFH80m  0,103,80   0,1,0 ** 80 m above ground none Specific Humidity [kg/kg]
SPFH30_0mb 0,108,3000,0   0,1,0 ** 30-0 mb above ground none Specific Humidity [kg/kg]
TMPsfc  0,1,0   0,0,0 ** surface none Temperature [K]
TMPprs   26,100  0,0,0 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none Temperature [K]
TMP_1829m  0,102,1829   0,0,0 ** 1829 m above mean sea level none Temperature [K]
TMP_2743m  0,102,2743   0,0,0 ** 2743 m above mean sea level none Temperature [K]
TMP_3658m  0,102,3658   0,0,0 ** 3658 m above mean sea level none Temperature [K]
TMP2m  0,103,2   0,0,0 ** 2 m above ground none Temperature [K]
TMP80m  0,103,80   0,0,0 ** 80 m above ground none Temperature [K]
TMP100m  0,103,100   0,0,0 ** 100 m above ground none Temperature [K]
TMPsig995  0,104,0.995   0,0,0 ** 0.995 sigma level none Temperature [K]
TMP30_0mb 0,108,3000,0   0,0,0 ** 30-0 mb above ground none Temperature [K]
TMP2pv  0,109,2e-06   0,0,0 ** PV=2e-06 (Km^2/kg/s) surface none Temperature [K]
TMPneg2pv  0,109,-2e-06   0,0,0 ** PV=-2e-06 (Km^2/kg/s) surface none Temperature [K]
TMPmwl  0,6,0   0,0,0 ** max wind none Temperature [K]
TMPtrop  0,7,0   0,0,0 ** tropopause none Temperature [K]
TOZNEclm  0,200,0   0,14,0 ** entire atmosphere (considered as a single layer) none Total Ozone [Dobson]
TSOIL0_10cm 0,106,0,0.1   2,0,2 ** 0-0.1 m below ground none Soil Temperature [K]
TSOIL10_40cm 0,106,0.1,0.4   2,0,2 ** 0.1-0.4 m below ground none Soil Temperature [K]
TSOIL40_100cm 0,106,0.4,1   2,0,2 ** 0.4-1 m below ground none Soil Temperature [K]
TSOIL100_200cm 0,106,1,2   2,0,2 ** 1-2 m below ground none Soil Temperature [K]
UGRDprs   26,100  0,2,2 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none U-Component of Wind [m/s]
UGRD_1829m  0,102,1829   0,2,2 ** 1829 m above mean sea level none U-Component of Wind [m/s]
UGRD_2743m  0,102,2743   0,2,2 ** 2743 m above mean sea level none U-Component of Wind [m/s]
UGRD_3658m  0,102,3658   0,2,2 ** 3658 m above mean sea level none U-Component of Wind [m/s]
UGRD10m  0,103,10   0,2,2 ** 10 m above ground none U-Component of Wind [m/s]
UGRD80m  0,103,80   0,2,2 ** 80 m above ground none U-Component of Wind [m/s]
UGRD100m  0,103,100   0,2,2 ** 100 m above ground none U-Component of Wind [m/s]
UGRDsig995  0,104,0.995   0,2,2 ** 0.995 sigma level none U-Component of Wind [m/s]
UGRD30_0mb 0,108,3000,0   0,2,2 ** 30-0 mb above ground none U-Component of Wind [m/s]
UGRD2pv  0,109,2e-06   0,2,2 ** PV=2e-06 (Km^2/kg/s) surface none U-Component of Wind [m/s]
UGRDneg2pv  0,109,-2e-06   0,2,2 ** PV=-2e-06 (Km^2/kg/s) surface none U-Component of Wind [m/s]
UGRDpbl  0,220,0   0,2,2 ** planetary boundary layer none U-Component of Wind [m/s]
UGRDmwl  0,6,0   0,2,2 ** max wind none U-Component of Wind [m/s]
UGRDtrop  0,7,0   0,2,2 ** tropopause none U-Component of Wind [m/s]
USTMl103_103 0,103,6000,0   0,2,194 ** 6000 m above ground - 0 m above ground none U-Component Storm Motion [m/s]
VGRDprs   26,100  0,2,3 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 70 50 30 20 10) none V-Component of Wind [m/s]
VGRD_1829m  0,102,1829   0,2,3 ** 1829 m above mean sea level none V-Component of Wind [m/s]
VGRD_2743m  0,102,2743   0,2,3 ** 2743 m above mean sea level none V-Component of Wind [m/s]
VGRD_3658m  0,102,3658   0,2,3 ** 3658 m above mean sea level none V-Component of Wind [m/s]
VGRD10m  0,103,10   0,2,3 ** 10 m above ground none V-Component of Wind [m/s]
VGRD80m  0,103,80   0,2,3 ** 80 m above ground none V-Component of Wind [m/s]
VGRD100m  0,103,100   0,2,3 ** 100 m above ground none V-Component of Wind [m/s]
VGRDsig995  0,104,0.995   0,2,3 ** 0.995 sigma level none V-Component of Wind [m/s]
VGRD30_0mb 0,108,3000,0   0,2,3 ** 30-0 mb above ground none V-Component of Wind [m/s]
VGRD2pv  0,109,2e-06   0,2,3 ** PV=2e-06 (Km^2/kg/s) surface none V-Component of Wind [m/s]
VGRDneg2pv  0,109,-2e-06   0,2,3 ** PV=-2e-06 (Km^2/kg/s) surface none V-Component of Wind [m/s]
VGRDpbl  0,220,0   0,2,3 ** planetary boundary layer none V-Component of Wind [m/s]
VGRDmwl  0,6,0   0,2,3 ** max wind none V-Component of Wind [m/s]
VGRDtrop  0,7,0   0,2,3 ** tropopause none V-Component of Wind [m/s]
VSTMl103_103 0,103,6000,0   0,2,195 ** 6000 m above ground - 0 m above ground none V-Component Storm Motion [m/s]
VVELprs   21,100  0,2,8 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100) none Vertical Velocity (Pressure) [Pa/s]
VVELsig995  0,104,0.995   0,2,8 ** 0.995 sigma level none Vertical Velocity (Pressure) [Pa/s]
VWSH2pv  0,109,2e-06   0,2,192 ** PV=2e-06 (Km^2/kg/s) surface none Vertical speed sheer [1/s]
VWSHneg2pv  0,109,-2e-06   0,2,192 ** PV=-2e-06 (Km^2/kg/s) surface none Vertical speed sheer [1/s]
VWSHtrop  0,7,0   0,2,192 ** tropopause none Vertical speed sheer [1/s]
WEASDsfc  0,1,0   0,1,13 ** surface none Water Equivalent of Accumulated Snow Depth [kg/m^2]
WILTsfc  0,1,0   2,0,201 ** surface none Wilting Point [Fraction]
var00212m  0,103,2   0,0,21 ** 2 m above ground none desc [unit]
var02224pbl  0,220,0   0,2,224 ** planetary boundary layer none desc [unit]
var06201sfc  0,1,0   0,6,201 ** surface none desc [unit]
var23203sfc  0,1,0   2,3,203 ** surface none desc [unit]
var242sfc  0,1,0   2,4,2 ** surface none desc [unit]

尽头的尽头

没有降水量啊

一颗梅子在南京

尽头的尽头 发表于 2015-11-5 11:26
没有降水量啊

那降水量资料哪有？

str@nger

想请教一下楼主，grib2生成的CTL看着和grib1区别不大，想咨询一下两类数据主要区别在哪啊？最近刚研究grib2

占戈示申

str@nger 发表于 2016-1-7 15:31
想请教一下楼主，grib2生成的CTL看着和grib1区别不大，想咨询一下两类数据主要区别在哪啊？最近刚研究grib2

就是txt与doc的区别。数据内容没什么太大变化，就是数据格式有变化。

str@nger

占戈示申 发表于 2016-1-7 22:57
就是txt与doc的区别。数据内容没什么太大变化，就是数据格式有变化。

谢谢啊

yangyangroger

原来只是txt和doc区别，谢谢评论！