netcdf files/d569728/MJJAS/SMM_SMAP_0.25.nc {
  dimensions:
    lat = 148;
    lon = 1440;
  variables:
    double lat(lat=148);
      :_FillValue = NaN; // double
      :long_name = "latitude";
      :standard_name = "latitude";
      :units = "degrees_north";
      :axis = "Y";

    double lon(lon=1440);
      :_FillValue = NaN; // double
      :long_name = "longitude";
      :standard_name = "longitude";
      :units = "degrees_east";
      :axis = "X";

    double SMM(lat=148, lon=1440);
      :_FillValue = NaN; // double
      :long_name = "Random error adjusted soil moisture memory for May-September (MJJAS) over 23°N–60°N";
      :unit = "days";
      :valid_min = 0.0; // double
      :valid_max = 153.0; // double
      :_ChunkSizes = 148U, 1440U; // uint

    double delta_sigma(lat=148, lon=1440);
      :_FillValue = NaN; // double
      :long_name = "Relative measurement error= SD(SM random error)/SD(SM) for May-September (MJJAS) over 23°N–60°N";
      :units = "Dimensionless";
      :_ChunkSizes = 148U, 1440U; // uint

    float sigma2(lat=148, lon=1440);
      :_FillValue = NaNf; // float
      :long_name = "Variance of observed SM for May-September (MJJAS) over 23°N–60°N";
      :units = "1";
      :_ChunkSizes = 148U, 1440U; // uint

    double delta2(lat=148, lon=1440);
      :_FillValue = NaN; // double
      :long_name = "Variance of observed SM random error for May-September (MJJAS) over 23°N–60°N";
      :units = "1";
      :_ChunkSizes = 148U, 1440U; // uint

  // global attributes:
  :Institution = "George Mason University, Virginia, USA";
  :Contact = "Nazanin Tavakoli (ntavakol@gmu.edu), Paul A Dirmeyer (pdirmeye@gmu.edu)";
  :Description = "Random error adjusted soil moisture memory (SMM), the relative measurement error (δ/σ), variance of the observed SM random error (δ**2), and variance of the observed SM (σ**2) derived from Soil Moisture Active Passive (SMAP) for May-September (MJJAS), from April 2015 to March 2025, over 23°N-60°N.";
  :Reference = "Tavakoli and Dirmeyer";
  :Creation_date = "2025";
  :Title = "A Global Dataset of Land–Atmosphere Coupling Metrics Based on Observations for Evaluating Earth System Models";
  :Version = "1.0";
  :Acknowledgment = "This work was supported by National Aeronautics and Space Administration under grant award 80NSSC20K1803 and 80NSSC21K1801";
}