求助，怎么把这个nc文件中的变量EmMw写成一个二进制文件

789

如题，用grads的话要怎么操作

netcdf earthgrid_EmMw_20030701_20030731_merge {

dimensions:

  nCol_nRow_nTimeLevels = UNLIMITED ; // (1036800 currently)

  nValsPerGrid = 10 ;

  nQC = 1 ;

variables:

short EmMw(nCol_nRow_nTimeLevels, nValsPerGrid) ;

    EmMw:long_name = "MW surface emissivity" ;

    EmMw:units = "none" ;

    EmMw:scale = 0.0001f ;

    EmMw:offset = 0.f ;

float EmMw_Var(nCol_nRow_nTimeLevels, nValsPerGrid) ;

    EmMw_Var:long_name = "MW surface emissivity variance" ;

    EmMw_Var:units = "none" ;

    EmMw_Var:scale = 1.f ;

    EmMw_Var:offset = 0.f ;

byte QC_Sum(nCol_nRow_nTimeLevels, nQC) ;

    QC_Sum:long_name = "summary quality flag for merged data" ;

    QC_Sum:units = "none" ;

byte QC_Day(nCol_nRow_nTimeLevels, nQC) ;

    QC_Day:long_name = "day quality flag" ;

    QC_Day:units = "none" ;

byte QC_Night(nCol_nRow_nTimeLevels, nQC) ;

    QC_Night:long_name = "night quality flag" ;

    QC_Night:units = "none" ;

// global attributes:

    :case = "Version 1.0" ;

    :CreationTime = "Tue Apr 21 20:31:38 2009" ;

    :nDimUnlim = 3 ;

    :dimUnlimDims = 1440, 720, 1 ;

    :dimNamesUnlim1 = "nCol" ;

    :dimNamesUnlim2 = "nRow" ;

    :dimNamesUnlim3 = "nTimeLevels" ;

    :nDimFixed = 1 ;

    :dimFixedDims = 10 ;

    :dimNamesFixed1 = "nValsPerGrid" ;

    :dimUnlimName = "nCol_nRow_nTimeLevels" ;

    :nchmw = 10 ;

    :mwfrequencies = 10.65f, 10.65f, 18.7f, 18.7f, 23.8f, 23.8f, 36.5f, 36.5f, 89.f, 89.f ;

    :mwpolarizations = 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 ;

    :map_projection_type = "Sinusoidal" ;

    :map_origin_latitude = 0.f ;

    :map_origin_longitude = 0.f ;

    :grid_origin_offset_row = 360.f ;

    :grid_origin_offset_col = 720.f ;

    :map_scale = 27.79973f ;

    :map_scale_units = "km" ;

    :earth_radius = 6371.2f ;

    :tile_column_index = 0 ;

    :tile_row_index = 0 ;

    :ncol_globaltiles = 1 ;

    :nrow_globaltiles = 1 ;

    :timeLevelIncrement = 31.f ;

    :timeLevelUnits = "days" ;

    :start_date = "20030701" ;

    :end_date = "20030731" ;

}