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我的nc文件用ncdump查看,是如下信息:
C:\Users\slq_dell>ncdump -h D:\GrADS20\data\cruncep_1954.nc
netcdf D:\GrADS20\data\cruncep_1954 {
dimensions:
y = 360 ;
x = 720 ;
tstep = UNLIMITED ; // (1460 currently)
land = 62482 ;
variables:
float nav_lat(y, x) ;
nav_lat:axis = "TYX" ;
nav_lat:long_name = "degrees_north" ;
nav_lat:missing_value = 1.e+20f ;
nav_lat:title = "Latitude" ;
nav_lat:units = "nav_lat" ;
nav_lat:valid_max = 90.f ;
nav_lat:valid_min = -90.f ;
float nav_lon(y, x) ;
nav_lon:axis = "TYX" ;
nav_lon:long_name = "degrees_east" ;
nav_lon:missing_value = 1.e+20f ;
nav_lon:title = "Longitude" ;
nav_lon:units = "nav_lon" ;
nav_lon:valid_max = 180.f ;
nav_lon:valid_min = -180.f ;
float time(tstep) ;
time:units = "seconds since 1954-01-01 00:00:00" ;
time:time_origin = "1954-JAN--01-01 00:00:00" ;
time:title = "Time" ;
time:long_name = "Time_axis" ;
time:calendar = "noleap" ;
int timestp(tstep) ;
timestp:units = "timestep since 1954-01-01 00:00:00" ;
timestp:time_origin = "1954-JAN--01-01 00:00:00" ;
timestp:title = "Time" ;
timestp:long_name = "Time step" ;
timestp:tstep_sec = 21600.f ;
int land(land) ;
land:compress = "y x" ;
float Tair(tstep, land) ;
Tair:long_name = "Tair" ;
Tair:units = "K" ;
Tair:titale = "Temperature" ;
Tair:axis = "TYX" ;
Tair:missing_value = 1.e+20f ;
float SWdown(tstep, land) ;
SWdown:long_name = "SWdown" ;
SWdown:units = "W/m^2/s" ;
SWdown:titale = "Incoming_Short_Wave_Radiation" ;
SWdown:axis = "TYX" ;
SWdown:missing_value = 1.e+20f ;
float Qair(tstep, land) ;
Qair:long_name = "Qair" ;
Qair:units = "kg/kg" ;
Qair:titale = "Air_Specific_Humidity" ;
Qair:axis = "TYX" ;
Qair:missing_value = 1.e+20f ;
float Rainf(tstep, land) ;
Rainf:long_name = "Rainf" ;
Rainf:units = "kg/m^2/s" ;
Rainf:titale = "Rainfall rate" ;
Rainf:axis = "TYX" ;
Rainf:missing_value = 1.e+20f ;
float LWdown(tstep, land) ;
LWdown:long_name = "LWdown" ;
LWdown:units = "W/m^2/s" ;
LWdown:titale = "Incoming_Long_Wave_Radiation" ;
LWdown:axis = "TYX" ;
LWdown:missing_value = 1.e+20f ;
float Wind_E(tstep, land) ;
Wind_E:long_name = "Wind_E" ;
Wind_E:units = "m/s" ;
Wind_E:titale = "U_wind_component" ;
Wind_E:axis = "TYX" ;
Wind_E:missing_value = 1.e+20f ;
float Wind_N(tstep, land) ;
Wind_N:long_name = "Wind_N" ;
Wind_N:units = "Pa" ;
Wind_N:titale = "V_wind_component" ;
Wind_N:axis = "TYX" ;
Wind_N:missing_value = 1.e+20f ;
float PSurf(tstep, land) ;
PSurf:long_name = "PSurf" ;
PSurf:units = "kg/m^2/s" ;
PSurf:titale = "Pression" ;
PSurf:axis = "TYX" ;
PSurf:missing_value = 1.e+20f ;
float Snowf(tstep, land) ;
Snowf:long_name = "Snowf" ;
Snowf:units = "" ;
Snowf:titale = "Snowfall rate" ;
Snowf:axis = "TYX" ;
Snowf:missing_value = 1.e+20f ;
// global attributes:
:data_source = "NCEP_corr_CRU" ;
:history = "Tue Sep 24 20:41:49 2013: ncap2 -s nav_lat=nav_lat+0
.25f;nav_lon=nav_lon-0.25f; /home/orchidee01/mmancip/IGCM/BC/OOL/OL2/CRU-NCEP/v5
/cruncep_1954.nc -O cruncep_1954.nc" ;
:nco_openmp_thread_number = 1 ;
我自己编写了一个ctl文件,
DSET ^cruncep_1954.nc
TITLE data
UNDEF 1.e+20f
XDEF x 720 LINEAR 0.25 0.5
YDEF y 360 LINEAR -89.75 0.5
TDEF tstep 1460 LINEAR 00Z01JAN1954 6hr
VARS 9
Tair=>Tair 0 99 Air data
SWdown=>SWdown 0 99 Land data
Qair=>Qair 0 99 Air data
Rainf=>Rainf 0 99 Land data
LWdown=>LWdown 0 99 Air data
Wind_E=>Wind_E 0 99 Land data
Wind_N=>Wind_N 0 99 Air data
PSurf=>PSurf 0 99 Land data
Snowf=>Snowf 0 99 Air data
ENDVARS
但是那个 int land(land) ;
land:compress = "y x" ;
这个怎么在ctl里表述呢?求教各位神仙
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