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	积分12948贡献 精华在线时间 小时注册时间2013-7-24最后登录1970-1-1 
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下载了ERA Interim等熵面数据,是不规则的nc资料,用ncdump后写了ctl,但打开后提示出错,请各位指点!
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  ctl如下:
 dset D:\netcdf\is201305.nc
 title  is
 undef 1.e30
 dtype netcdf
 xdef  321 linear  60.0  0.125
 ydef  241 linear  30.0  0.125
 zdef  15 levels  850 700 600 530 475 430 395 370 350 330 315 300 285 275 265
 tdef  124 linear 00Z01may2013  6hr
 VARS   7
 pres    15 99 Pressure(Pa)
 pv      15 99 Potential vorticity(K m**2 kg**-1 s**-1)
 q       15 99 Specific humidity(kg kg**-1)
 vo      15 99 Vorticity (relative)(s**-1)
 d       15 99 Divergence(s**-1)
 u       15 99 U component of wind(m s**-1)
 v       15 99 V component of wind(m s**-1)
 ENDVARS
 
 文件头如下:
 netcdf is201305 {
 dimensions:
 longitude = 321 ;
 latitude = 241 ;
 level = 15 ;
 time = UNLIMITED ; // (124 currently)
 variables:
 float longitude(longitude) ;
 longitude:units = "degrees_east" ;
 longitude:long_name = "longitude" ;
 float latitude(latitude) ;
 latitude:units = "degrees_north" ;
 latitude:long_name = "latitude" ;
 int level(level) ;
 level:long_name = "levelist" ;
 int time(time) ;
 time:units = "hours since 1900-01-01 00:00:0.0" ;
 time:long_name = "time" ;
 time:calendar = "gregorian" ;
 short pres(time, level, latitude, longitude) ;
 pres:scale_factor = 1.63915574157891 ;
 pres:add_offset = 54680.2877219339 ;
 pres:_FillValue = -32767s ;
 pres:missing_value = -32767s ;
 pres:units = "Pa" ;
 pres:long_name = "Pressure" ;
 short pv(time, level, latitude, longitude) ;
 pv:scale_factor = 7.90401599271671e-009 ;
 pv:add_offset = 0.000207577008696949 ;
 pv:_FillValue = -32767s ;
 pv:missing_value = -32767s ;
 pv:units = "K m**2 kg**-1 s**-1" ;
 pv:long_name = "Potential vorticity" ;
 short q(time, level, latitude, longitude) ;
 q:scale_factor = 3.42865958892848e-007 ;
 q:add_offset = 0.0112343460090831 ;
 q:_FillValue = -32767s ;
 q:missing_value = -32767s ;
 q:units = "kg kg**-1" ;
 q:long_name = "Specific humidity" ;
 q:standard_name = "specific_humidity" ;
 short vo(time, level, latitude, longitude) ;
 vo:scale_factor = 1.10947607275713e-008 ;
 vo:add_offset = 7.38325657864937e-005 ;
 vo:_FillValue = -32767s ;
 vo:missing_value = -32767s ;
 vo:units = "s**-1" ;
 vo:long_name = "Vorticity (relative)" ;
 vo:standard_name = "atmosphere_relative_vorticity" ;
 short d(time, level, latitude, longitude) ;
 d:scale_factor = 6.73893680605735e-009 ;
 d:add_offset = -1.43547884087534e-005 ;
 d:_FillValue = -327press67s ;
 d:missing_value = -32767s ;
 d:units = "s**-1" ;
 d:long_name = "Divergence" ;
 d:standard_name = "divergence_of_wind" ;
 short u(time, level, latitude, longitude) ;
 u:scale_factor = 0.00148065684688775 ;
 u:add_offset = 23.9375044912177 ;
 u:_FillValue = -32767s ;
 u:missing_value = -32767s ;
 u:units = "m s**-1" ;
 u:long_name = "U component of wind" ;
 u:standard_name = "eastward_wind" ;
 short v(time, level, latitude, longitude) ;
 v:scale_factor = 0.00152109774294892 ;
 v:add_offset = -0.233609669965224 ;
 v:_FillValue = -32767s ;
 v:missing_value = -32767s ;
 v:units = "m s**-1" ;
 v:long_name = "V component of wind" ;
 v:standard_name = "northward_wind" ;
 
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