请问有没有知道grib2的ctl文件里这些变量是什么意思啊？大部分不懂。

fen蓝

dset c:/opengrads/filename1/datafiles/fnl_20130401_00_00
index c:/opengrads/filename1/datafiles/fnl_20130401_00_00.idx
undef 9.999E+20
title c:/opengrads/filename1/datafiles/fnl_20130401_00_00
*  produced by g2ctl v0.0.3d
* griddef=1:0:(360 x 181):grid_template=0:winds(N/S): lat-lon grid:(360 x 181) units 1e-06 input WE:NS output WE:SN res 48 lat 90.000000 to -90.000000 by 1.000000 lon 0.000000 to 359.000000 by 1.000000 #points=65160
dtype grib2
ydef 181 linear -90.000000 1
xdef 360 linear 0.000000 1.000000
tdef 1 linear 00Z01apr2013 1mo
*  z has 26 levels -prs
zdef 26 levels 100000 97500 95000 92500 90000 85000 80000 75000 70000 65000 60000 55000 50000 45000 40000 35000 30000 25000 20000 15000 10000 7000 5000 3000 2000 1000
options pascals
vars 138
no4LFTXsfc  0,1,0   0,7,193 ** surface none Best (4 layer) Lifted Index [K]
no5WAVA500mb  0,100,50000   0,3,197 ** 500 mb none 5-Wave Geopotential Height Anomaly [gpm]
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]
ACPCPsfc  0,1,0   0,1,10,1 ** surface acc Convective Precipitation [kg/m^2]
ALBDOsfc  0,1,0   0,19,1,0 ** surface ave Albedo [%]
APCPsfc  0,1,0   0,1,8,1 ** surface acc Total Precipitation [kg/m^2]
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]
CFRZRsfc  0,1,0   0,1,193,0 ** surface ave Categorical Freezing Rain (yes=1; no=0) [non-dim]
CICEPsfc  0,1,0   0,1,194,0 ** surface ave Categorical Ice Pellets (yes=1; no=0) [non-dim]
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]
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]
CPRATsfc  0,1,0   0,1,196,0 ** surface ave Convective Precipitation Rate [kg/m^2/s]
CRAINsfc  0,1,0   0,1,192,0 ** surface ave Categorical Rain (yes=1; no=0) [non-dim]
CSNOWsfc  0,1,0   0,1,195,0 ** surface ave Categorical Snow (yes=1; no=0) [non-dim]
CWATclm  0,200,0   0,6,6 ** entire atmosphere (considered as a single layer) none Cloud Water [kg/m^2]
CWORKclm  0,200,0   0,6,193,0 ** entire atmosphere (considered as a single layer) ave Cloud Work Function [J/kg]
DLWRFsfc  0,1,0   0,5,192,0 ** surface ave Downward Long-Wave Rad. Flux [W/m^2]
DSWRFsfc  0,1,0   0,4,192,0 ** surface ave Downward Short-Wave Rad. Flux [W/m^2]
GFLUXsfc  0,1,0   2,0,193,0 ** surface ave Ground Heat Flux [W/m^2]
GPA1000mb  0,100,100000   0,3,9 ** 1000 mb none Geopotential Height Anomaly [gpm]
GPA500mb  0,100,50000   0,3,9 ** 500 mb none Geopotential Height Anomaly [gpm]
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]
HGTneg2pv  0,109,-2e-06   0,3,5 ** PV=-2e-06 (Km^2/kg/s) surface none Geopotential Height [gpm]
HGT2pv  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]
HPBLsfc  0,1,0   0,3,196 ** surface none Planetary Boundary Layer 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]
LHTFLsfc  0,1,0   0,0,10,0 ** surface ave Latent Heat Net Flux [W/m^2]
O3MRprs   26,100  0,14,192 ** (100 70 50 30 20 10) none Ozone Mixing Ratio [kg/kg]
PEVPRsfc  0,1,0   0,1,200 ** surface none Potential Evaporation Rate [W/m^2]
POTsig995  0,104,0.995   0,0,2 ** 0.995 sigma level none Potential Temperature [K]
PRATEsfc  0,1,0   0,1,7,0 ** surface ave Precipitation Rate [kg/m^2/s]
PRESsfc  0,1,0   0,3,0 ** surface none Pressure [Pa]
PRESmsl  0,101,0   0,3,0 ** mean sea level none Pressure [Pa]
PRESneg2pv  0,109,-2e-06   0,3,0 ** PV=-2e-06 (Km^2/kg/s) surface none Pressure [Pa]
PRES2pv  0,109,2e-06   0,3,0 ** PV=2e-06 (Km^2/kg/s) surface none Pressure [Pa]
PRESlclb  0,212,0   0,3,0,0 ** low cloud bottom level ave Pressure [Pa]
PRESlclt  0,213,0   0,3,0,0 ** low cloud top level ave Pressure [Pa]
PRESmclb  0,222,0   0,3,0,0 ** middle cloud bottom level ave Pressure [Pa]
PRESmclt  0,223,0   0,3,0,0 ** middle cloud top level ave Pressure [Pa]
PREShclb  0,232,0   0,3,0,0 ** high cloud bottom level ave Pressure [Pa]
PREShclt  0,233,0   0,3,0,0 ** high cloud top level ave 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   21,100  0,1,1 ** (1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100) 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 [%]
SHTFLsfc  0,1,0   0,0,11,0 ** surface ave Sensible Heat Net Flux [W/m^2]
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]
SPFH30_0mb 0,108,3000,0   0,1,0 ** 30-0 mb above ground none Specific Humidity [kg/kg]
TCDCclm  0,200,0   0,6,1,0 ** entire atmosphere (considered as a single layer) ave Total Cloud Cover [%]
TCDCblcll  0,211,0   0,6,1,0 ** boundary layer cloud layer ave Total Cloud Cover [%]
TCDClcll  0,214,0   0,6,1,0 ** low cloud layer ave Total Cloud Cover [%]
TCDCmcll  0,224,0   0,6,1,0 ** middle cloud layer ave Total Cloud Cover [%]
TCDChcll  0,234,0   0,6,1,0 ** high cloud layer ave Total Cloud Cover [%]
TCDCccll  0,244,0   0,6,1 ** convective cloud layer none Total Cloud Cover [%]
TMAX2m  0,103,2   0,0,4 ** 2 m above ground missing Maximum Temperature [K]
TMIN2m  0,103,2   0,0,5 ** 2 m above ground missing Minimum Temperature [K]
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_457m  0,102,457   0,0,0 ** 457 m above mean sea level none Temperature [K]
TMP_914m  0,102,914   0,0,0 ** 914 m above mean sea level none Temperature [K]
TMP_1524m  0,102,1524   0,0,0 ** 1524 m above mean sea level none Temperature [K]
TMP2m  0,103,2   0,0,0 ** 2 m above ground none Temperature [K]
TMPsig995  0,104,0.995   0,0,0 ** 0.995 sigma level none Temperature [K]
TMP0_10cm 0,106,0,0.1   0,0,0 ** 0-0.1 m below ground none Temperature [K]
TMP10_40cm 0,106,0.1,0.4   0,0,0 ** 0.1-0.4 m below ground none Temperature [K]
TMP40_100cm 0,106,0.4,1   0,0,0 ** 0.4-1 m below ground none Temperature [K]
TMP100_200cm 0,106,1,2   0,0,0 ** 1-2 m below ground none Temperature [K]
TMP30_0mb 0,108,3000,0   0,0,0 ** 30-0 mb above ground none Temperature [K]
TMPneg2pv  0,109,-2e-06   0,0,0 ** PV=-2e-06 (Km^2/kg/s) surface none Temperature [K]
TMP2pv  0,109,2e-06   0,0,0 ** PV=2e-06 (Km^2/kg/s) surface none Temperature [K]
TMPlclt  0,213,0   0,0,0,0 ** low cloud top level ave Temperature [K]
TMPmclt  0,223,0   0,0,0,0 ** middle cloud top level ave Temperature [K]
TMPhclt  0,233,0   0,0,0,0 ** high cloud top level ave 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]
UGWDsfc  0,1,0   0,3,194,0 ** surface ave Zonal Flux of Gravity Wave Stress [N/m^2]
UFLXsfc  0,1,0   0,2,17,0 ** surface ave Momentum Flux, U-Component [N/m^2]
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_457m  0,102,457   0,2,2 ** 457 m above mean sea level none U-Component of Wind [m/s]
UGRD_914m  0,102,914   0,2,2 ** 914 m above mean sea level none U-Component of Wind [m/s]
UGRD_1524m  0,102,1524   0,2,2 ** 1524 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]
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]
UGRDneg2pv  0,109,-2e-06   0,2,2 ** PV=-2e-06 (Km^2/kg/s) surface 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]
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]
ULWRFsfc  0,1,0   0,5,193,0 ** surface ave Upward Long-Wave Rad. Flux [W/m^2]
ULWRFtoa  0,8,0   0,5,193,0 ** top of atmosphere ave Upward Long-Wave Rad. Flux [W/m^2]
USWRFsfc  0,1,0   0,4,193,0 ** surface ave Upward Short-Wave Rad. Flux [W/m^2]
USWRFtoa  0,8,0   0,4,193,0 ** top of atmosphere ave Upward Short-Wave Rad. Flux [W/m^2]
VGWDsfc  0,1,0   0,3,195,0 ** surface ave Meridional Flux of Gravity Wave Stress [N/m^2]
VFLXsfc  0,1,0   0,2,18,0 ** surface ave Momentum Flux, V-Component [N/m^2]
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_457m  0,102,457   0,2,3 ** 457 m above mean sea level none V-Component of Wind [m/s]
VGRD_914m  0,102,914   0,2,3 ** 914 m above mean sea level none V-Component of Wind [m/s]
VGRD_1524m  0,102,1524   0,2,3 ** 1524 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]
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]
VGRDneg2pv  0,109,-2e-06   0,2,3 ** PV=-2e-06 (Km^2/kg/s) surface 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]
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]
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]
VWSHneg2pv  0,109,-2e-06   0,2,192 ** PV=-2e-06 (Km^2/kg/s) surface none Vertical speed sheer [1/s]
VWSH2pv  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]
WATRsfc  0,1,0   2,0,5,1 ** surface acc Water Runoff [kg/m^2]
WEASDsfc  0,1,0   0,1,13 ** surface none Water Equivalent of Accumulated Snow Depth [kg/m^2]
ENDVARS


另外有没有哪位大神有grib2资料水汽通量（散度）、K指数的脚本呢？网上下了很多其他资料的，想自己学习，可是grib2的变量跟那些不一样的，苦闷中，，，，求帮忙。感谢。

曾记否

后面不都有英文的变量说明吗

qhzx

看的我要疯了，太费劲。

尽头的尽头

多用论坛搜素功能，谢谢

fen蓝

尽头的尽头 发表于 2013-4-26 15:03

                               
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多用论坛搜素功能，谢谢

论坛的搜索功能可能我不太会用，找不到能看懂的。谢谢。

fen蓝

曾记否 发表于 2013-4-26 15:14

                               
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后面不都有英文的变量说明吗

多谢提醒，看了好几天都没发现。

mofangbao

你应该贴到谷歌翻译的

fen蓝

mofangbao 发表于 2013-4-26 17:04

                               
登录/注册后可看大图

你应该贴到谷歌翻译的

谢谢，现在搞懂了，请指点一下，grib2的资料用grads能画出假相当位温的垂直剖面图吗？我看的公式里头需要露点温度，但是这里面貌似没有。谢谢你。

wu3015869

描述GRIB文件的ctl变量说明中的数字是什么含意

wu3015869

描述GRIB文件的ctl变量说明中的数字是什么含意？（内详）

有一个地表通量的grib文件，其相应的ctl文件中有如下的变量描述：
vars    10
CPRAT      0 214,1,0 Convective precipitation rate (kg/m**2/s)                  
PRATE      0 59,1,0 Precipitation rate (kg/m**2/s)                              
SPFH       0 51,105,2 Specific humidity (kg/kg)                                 
TCDChcl    0 71,234,0 Total cloud cover (percent)                              
TCDClcl    0 71,214,0 Total cloud cover (percent)                              
TCDCmcl    0 71,224,0 Total cloud cover (percent)                              
TMP        0 11,105,2 Temperature (K)                                          
UGRD       0 33,105,10 u wind(m/s)                                             
ULWRF      0 212,8,0 Upward long wave radiation flux (W/m**2)                  
VGRD       0 34,105,10 v wind (m/s)   
想问一下，比如像UGRD     0 33,105,10 u wind(m/s)中，33，105，10分别是什么含意？谢谢
我的邮箱  wuyouxun@aliyun.com