netcdf FROGs/PrISM/PrISM_SMOS.1DD.2016.nc {
  dimensions:
    time = UNLIMITED;   // (366 currently)
    lon = 360;
    lat = 180;
  variables:
    double time(time=366);
      :standard_name = "time";
      :long_name = "time";
      :units = "days since 1970-01-01";
      :calendar = "standard";
      :axis = "T";
      :_ChunkSizes = 512U; // uint

    float lon(lon=360);
      :standard_name = "longitude";
      :long_name = "longitude";
      :units = "degrees_east";
      :axis = "X";

    float lat(lat=180);
      :standard_name = "latitude";
      :long_name = "latitude";
      :units = "degrees_north";
      :axis = "Y";

    float rain(time=366, lat=180, lon=360);
      :standard_name = "lwe_precipitation_rate";
      :long_name = " rainfall amount over the temporal scale accumulated from 0h to 0h";
      :units = "mm/day";
      :_FillValue = NaNf; // float
      :missing_value = NaNf; // float
      :comment = "This daily precipitation is calculated from the daily source precipitation with averaging from 0.1 x 0.1 degree to 1 x 1 degree.";
      :_ChunkSizes = 1U, 180U, 360U; // uint

  // global attributes:
  :CDI = "Climate Data Interface version 1.9.10 (https://mpimet.mpg.de/cdi)";
  :source = "Gridded Daily Accumulated Rainfall derived from PrISM products, algorithm with SMOS-L3SM-RE07 (CATDS/CNES) and IMERG Early (0.1deg / 3h, NASA) assimilation (Particle Filter). RFI threshold is 0.4, DQX threshold is 0.08. Pellarin et al. 2022  https://doi.org/10.3390/rs14030746";
  :institution = "IGE/LEGOS/IPSL";
  :Conventions = "ACDD-1.3, CF-1.8";
  :title = "Frogs daily 1 degree x 1 degree gridded precipitation products for PrISM";
  :references = "See https://www.earth-syst-sci-data.net/11/1017/2019. The reference paper for the FROGS database is the following:Roca, R., Alexander, L. V., Potter, G., Bador, M., Juca, R., Contractor, S., Bosilovich, M. G., and Cloche, S.: FROGS: a daily 1 degree x 1 degree gridded precipitation database of rain gauge, satellite and reanalysis products, Earth Syst. Sci. Data, 11, 1017-1035, https://doi.org/10.5194/essd-11-1017-2019.";
  :summary = "The Frequent Rainfall Observations on GridS (FROGS) database (Roca et al., 2019) is composed of gridded daily-precipitation products on a common 1 degree x 1 degree grid to ease intercomparison and assessment exercises. The database includes satellite, ground-based and reanalysis products. As most of the satellite products rely on rain gauges for calibration, unadjusted versions of satellite products are also provided where available. FROGS website homepage: http://frogs.ipsl.fr/";
  :comment = "This data set is an update of the FROGS v0 data set. Main differences are: - temporal extension from 2017 up to most recent data available if data available after 2017, - addition of two new data sets in the database : GPCC Full Data Daily version 2020 and PERSIANN-CCS-CDR, - metadata update.";
  :creator_name = "IGE";
  :creator_email = "thierry.pellarin@univ-grenoble-alpes.fr";
  :creator_type = "institution";
  :creator_institution = "IGE (Institut des Geosciences de l Environnement, Grenoble, FRANCE";
  :contributor_name = "Remy Roca";
  :contributor_role = "data gridding and formatting in netCDF";
  :contributor_email = "remy.roca@cnrs.fr";
  :contributor_type = "person";
  :contributor_institution = "LEGOS";
  :metadata_link = "https://data.ipsl.fr/catalog/srv/eng/catalog.search#/metadata/20d37727-81b2-4821-9f51-6baa2b9cc06d";
  :id = "https://doi.org/10.14768/06337394-73A9-407C-9997-0E380DAC5598";
  :publisher_name = "ESPRI";
  :publisher_email = "none";
  :publisher_type = "institution";
  :publisher_url = "https://www.ipsl.fr/";
  :publisher_institution = "IPSL";
  :product_version = "1";
  :time_coverage_start = "2016-01-01T00:00:00";
  :time_coverage_end = "2016-12-31T02:59:12";
  :time_coverage_resolution = "day";
  :geospatial_lat_min = -89.5; // double
  :geospatial_lat_max = 89.5; // double
  :geospatial_lon_min = -179.5; // double
  :geospatial_lon_max = 179.5; // double
  :geospatial_lat_resolution = 1.0; // double
  :geospatial_lon_resolution = 1.0; // double
  :geospatial_lat_units = "degrees_north";
  :geospatial_lon_units = "degrees_east";
  :cdm_data_type = "grid";
  :keywords = "GCMD:EARTH SCIENCE,GCMD:ATMOSPHERE,GCMD:PRECIPITATION";
  :platform = "GCMD:Earth Observation Satellites";
  :instruments = "GCMD:Earth Remote Sensing Instruments,GCMD:Passive Remote Sensing";
  :instrument_vocabulary = "GCMD:GCMD Keywords";
  :platform_vocabulary = "GCMD:GCMD Keywords";
  :keywords_vocabulary = "GCMD:GCMD Keywords, CF:NetCDF COARDS Climate and Forecast Standard Names";
  :standard_name_vocabulary = "CF Standard Name Table v77";
  :CDO = "Climate Data Operators version 1.9.10 (https://mpimet.mpg.de/cdo)";
}