netcdf files/d084006/T170_netcdf/2001/20010326.nc {
  dimensions:
    lat = 256;
    lon = 512;
    lev = 42;
    ilev = 43;
    time = UNLIMITED;   // (9 currently)
  variables:
    float lat(lat=256);
      :units = "degrees_north";
      :long_name = "latitude";

    float lon(lon=512);
      :units = "degrees_east";
      :long_name = "latitude";

    float gw(lat=256);
      :long_name = "gauss weights";

    float P0;
      :long_name = "reference pressure";
      :units = "Pa";

    int ntrm;
      :long_name = "spectral truncation parameter M";

    int ntrn;
      :long_name = "spectral truncation parameter N";

    int ntrk;
      :long_name = "spectral truncation parameter K";

    int ndbase;
      :long_name = "base day for this case";

    int nsbase;
      :long_name = "seconds to complete base day";
      :units = "s";

    int nbdate;
      :long_name = "base date as 8 digit integer (YYYYMMDD)";

    int nbsec;
      :long_name = "seconds to complete base date";
      :units = "s";

    int mdt;
      :long_name = "model timestep";
      :units = "s";

    float hyai(ilev=43);
      :long_name = "hybrid A coefficient at layer interfaces";

    float hybi(ilev=43);
      :long_name = "hybrid B coefficient at layer interfaces";

    float hyam(lev=42);
      :long_name = "hybrid A coefficient at layer midpoints";

    float hybm(lev=42);
      :long_name = "hybrid B coefficient at layer midpoints";

    float lev(lev=42);
      :long_name = "hybrid level at layer midpoints (1000*(A+B))";
      :units = "hybrid_sigma_pressure";
      :positive = "down";
      :A_var = "hyam";
      :B_var = "hybm";
      :P0_var = "P0";
      :PS_var = "PS";
      :bounds = "ilev";

    float ilev(ilev=43);
      :long_name = "hybrid level at layer interfaces (1000*(A+B))";
      :units = "hybrid_sigma_pressure";
      :positive = "down";
      :A_var = "hyai";
      :B_var = "hybi";
      :P0_var = "P0";
      :PS_var = "PS";

    int nlons(lat=256);
      :long_name = "number of longitudes at each latitude";

    int date(time=9);
      :long_name = "current date as 8 digit integer (YYYYMMDD)";

    int datesec(time=9);
      :long_name = "seconds to complete current date";
      :units = "s";

    double time(time=9);
      :long_name = "time";
      :units = "Julian days";

    float PS(time=9, lat=256, lon=512);
      :long_name = "surface pressure";
      :units = "Pa";

    float U(time=9, lev=42, lat=256, lon=512);
      :long_name = "zonal wind component";
      :units = "m/s";

    float V(time=9, lev=42, lat=256, lon=512);
      :long_name = "meridional wind component";
      :units = "m/s";

    float T(time=9, lev=42, lat=256, lon=512);
      :long_name = "temperature";
      :units = "K";

    float TS(time=9, lat=256, lon=512);
      :long_name = "Surface temperature";
      :units = "K";

    float Q(time=9, lev=42, lat=256, lon=512);
      :long_name = "specific humidity";
      :units = "kg/kg";

    float FRACL(time=9, lat=256, lon=512);
      :long_name = "land fraction";
      :units = "fraction";

    float FRACI(time=9, lat=256, lon=512);
      :long_name = "ice fraction";
      :units = "fraction";

    float PHIS(time=9, lat=256, lon=512);
      :long_name = "surface geopotential";
      :units = "m2/s2";

    float TAUX(time=9, lat=256, lon=512);
      :long_name = "X-component (east-west) of surface stress";
      :units = "N/m2";

    float TAUY(time=9, lat=256, lon=512);
      :long_name = "Y-component (north-south) of surface stress";
      :units = "N/m2";

    float SHFLX(time=9, lat=256, lon=512);
      :long_name = "Surface sensible heat flux";
      :units = "W/m2";

    float QFLX(time=9, lat=256, lon=512);
      :long_name = "Surface water flux";
      :units = "kg/m2/s";

    float FSDS(time=9, lat=256, lon=512);
      :long_name = "Downward Shortwave flux at Surface";
      :units = "W/m2";

    float FSUS(time=9, lat=256, lon=512);
      :long_name = "Upward Shortwave flux at Surface";
      :units = "W/m2";

    float FLDS(time=9, lat=256, lon=512);
      :long_name = "Downward Longwave Flux at Surface";
      :units = "W/m2";

    float VWC_SFC(time=9, lat=256, lon=512);
      :long_name = "Volumetric water content at Surface";
      :units = "fraction";

    float SNOWH(time=9, lat=256, lon=512);
      :long_name = "Water equivalent snow depth";
      :units = "m";

    float PRECT(time=9, lat=256, lon=512);
      :long_name = "Total Precip";
      :units = "m/s";

  // global attributes:
  :case = "NCEPAVN";
  :source = "Data converted from NCEP AVN files";
  :title = "";
  ::hybrid_sigma_pressure = "\nPressure at a grid point (lon(i),lat(j),lev(k)) is computed    \nusing the formula:                                             \n           p(i,j,k) = A(k)*PO + B(k)*PS(i,j)                   \nwhere A, B, PO, and PS are contained in the variables whose    \nnames are given by the attributes of the vertical coordinate   \nvariable A_var, B_var, P0_var, and PS_var respectively.        \n";
  :history = "Fri Sep 28 05:57:15 2007: ncrcat -O 20070928.06.66.L42.T170.nc 20070928.06.69.L42.T170.nc 20070928.06.72.L42.T170.nc 20070928.06.75.L42.T170.nc 20070928.06.78.L42.T170.nc 20070928.06.81.L42.T170.nc 20070928.06.84.L42.T170.nc 20070928.06.87.L42.T170.nc 20070928.06.90.L42.T170.nc /ptmp/bundy/data/NCEP_avn_T170/20070928_T170_4.nc\nFri Sep 28 05:09:18 2007: ncks -A -x -v time,O3 /ptmp/bundy/data/NCEP_avn/20070928_forecasts_3/20070928.06.66.new.nc /ptmp/bundy/data/NCEP_avn/20070928_forecasts_3/20070928.06.66.nc\nFri Sep 28 05:08:23 2007: ncpdq -a -ilev,-lev,-lat /ptmp/bundy/data/NCEP_avn/20070928_forecasts_3/20070928.06.66.new_rev.nc /ptmp/bundy/data/NCEP_avn/20070928_forecasts_3/20070928.06.66.new.nc\nFri Sep 28 05:09:33 2007: chvres.i: linear interpolation to resolution 42layers\nFri Sep 28 05:53:24 2007: chres.i: linear interpolation to resolution 512 256";
  :nco_openmp_thread_number = 2; // int
}