netcdf classic (CDF-1) {
dimensions:
	longitude = 1440 ;
	latitude = 720 ;
	time = 1 ;
// global attributes:
		:Conventions = "CF-1.8, ACDD-1.3" ;
		:standard_name_vocabulary = "CF Standard Name Table v27" ;
		:Title = "Multi-Mission Optimally Interpolated Sea Surface Salinity Daily Global Dataset v3.0" ;
		:Short_Name = "OISSS_L4_multimission_daily_v3" ;
		:Version = "v3.0" ;
		:Processing_Level = "Level 4" ;
		:source = "Aquarius v5.0 Level 2 SSS; SMAP RSS v6.0 (v6.3) Level 2 SSS_40km; SMOS Level 2 SSS L2OS version 700" ;
		:sourse_of_input_Aquarius_SSS = "Aquarius Official Release Level 2 Sea Surface Salinity & Wind Speed Cal Data v5.0. Distributed by PO.DAAC at https://podaac.jpl.nasa.gov/dataset/AQUARIUS_L2_SSS_CAL_V5" ;
		:sourse_of_input_SMAP_SSS = "T. Meissner, F. J. Wentz, A. Manaster, R. Lindsley, M. Brewer, M. Densberger, 2024: Remote Sensing Systems SMAP Ocean Surface Salinities [Level 2C, Level 3 Running 8-day, Level 3 Monthly], Version 6.0 validated release.Remote Sensing Systems, Santa Rosa, CA, USA, Available online at www.remss.com/missions/smap, doi: 10.5067/SMP60-2SOCS." ;
		:sourse_of_input_SMOS_SSS = "ESA SMOS online dissemination service at https://smos-diss.eo.esa.int/oads/access" ;
		:platform = "Aquarius/SAC-D, SMAP, SMOS" ;
		:instrument = "Aquarius radiometer, SMAP radiometer, SMOS MIRAS" ;
		:Creation_Date = "2026-05-17T23:51:17Z" ;
		:Creator_Name = "Oleg Melnichenko" ;
		:Creator_Email = "oleg@esr.org" ;
		:Creator_URL = "https://www.esr.org/data-products/oisss" ;
		:Project = "NASA Ocean Salinity" ;
		:Keywords = "Sea Surface Salinity, SSS, Aquarius, SMAP, SMOS, Optimum Interpolation, OISSS" ;
		:Keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Science Keywords" ;
		:Institution = "Earth and Space Research (ESR), Seattle, WA; IPRC/SOEST, University of Hawaii, Honolulu, HI; Remote Sensing Systems (RSS), Santa Rosa, CA" ;
		:Publisher_Name = "Oleg Melnichenko, Peter Hacker, Thomas Meissner, Frank Wentz, Julian Schanze, Jesse Anderson" ;
		:Publisher_Email = "oleg@esr.org" ;
		:Publisher_URL = "https://www.esr.org/data-products/oisss" ;
		:Dataset_Citation_Authors = "Oleg Melnichenko, Peter Hacker, Thomas Meissner, Frank Wentz, Julian Schanze, Jesse Anderson" ;
		:Dataset_Citation_Year = "2026" ;
		:Dataset_Citation_Product = "Multi-Mission Sea Surface Salinity Optimum Interpolation Analysis" ;
		:Technical_Notes = "http://oisss.esr.org/data/docs/OISSS_Product_Notes_v3.pdf" ;
		:year_of_observation = "2014" ;
		:month_of_observation = "3" ;
		:day_of_observation = "8" ;
		:time_coverage_start = "2014-03-04T12:00:00Z" ;
		:time_coverage_end = "2014-03-12T12:00:00Z" ;
		:time_coverage_resolution = "P1D" ;
		:cdm_data_type = "grid" ;
		:geospatial_lat_min = -90.0 ;
		:geospatial_lat_max = 90.0 ;
		:geospatial_lat_resolution = 0.25 ;
		:geospatial_lat_units = "degrees_north" ;
		:geospatial_lon_min = -180.0 ;
		:geospatial_lon_max = 180.0 ;
		:geospatial_lon_resolution = 0.25 ;
		:geospatial_lon_units = "degrees_east" ;
variables:
	float longitude(longitude) ;
		longitude:long_name = "longitude" ;
		longitude:standard_name = "longitude" ;
		longitude:units = "degrees_east" ;
		longitude:axis = "X" ;
		longitude:valid_min = -180.0 ;
		longitude:valid_max = 180.0 ;
		longitude:coverage_content_type = "coordinate" ;
	float latitude(latitude) ;
		latitude:long_name = "latitude" ;
		latitude:standard_name = "latitude" ;
		latitude:units = "degrees_north" ;
		latitude:axis = "Y" ;
		latitude:valid_min = -90.0 ;
		latitude:valid_max = 90.0 ;
		latitude:coverage_content_type = "coordinate" ;
	float time(time) ;
		time:long_name = "center day of a time period over which satellite Level 2 SSS data have been collected for OISSS analysis" ;
		time:standard_name = "time" ;
		time:units = "Days since 2010-12-31T00:00:00Z" ;
		time:calendar = "standard" ;
		time:axis = "T" ;
		time:coverage_content_type = "coordinate" ;
	float sss(latitude, longitude, time) ;
		sss:long_name = "sea surface salinity" ;
		sss:standard_name = "sea_surface_salinity" ;
		sss:units = "1e-3" ;
		sss:valid_min = 0.0 ;
		sss:valid_max = 45.0 ;
		sss:_FillValue = -9999.0 ;
		sss:scale_factor = 1.0 ;
		sss:add_factor = 0.0 ;
		sss:coordinates = "time longitude latitude" ;
		sss:coverage_content_type = "physicalMeasurement" ;
	float sss_empirical_uncertainty(latitude, longitude, time) ;
		sss_empirical_uncertainty:long_name = "estimated empirical uncertainty of multi-mission OISSS" ;
		sss_empirical_uncertainty:units = "1e-3" ;
		sss_empirical_uncertainty:valid_min = 0.0 ;
		sss_empirical_uncertainty:valid_max = 45.0 ;
		sss_empirical_uncertainty:_FillValue = -9999.0 ;
		sss_empirical_uncertainty:scale_factor = 1.0 ;
		sss_empirical_uncertainty:add_factor = 0.0 ;
		sss_empirical_uncertainty:coordinates = "time longitude latitude" ;
		sss_empirical_uncertainty:coverage_content_type = "qualityInformation" ;
	float sss_formal_uncertainty(latitude, longitude, time) ;
		sss_formal_uncertainty:long_name = "estimated formal uncertainty of multi-mission OISSS" ;
		sss_formal_uncertainty:units = "1e-3" ;
		sss_formal_uncertainty:valid_min = 0.0 ;
		sss_formal_uncertainty:valid_max = 45.0 ;
		sss_formal_uncertainty:_FillValue = -9999.0 ;
		sss_formal_uncertainty:scale_factor = 1.0 ;
		sss_formal_uncertainty:add_factor = 0.0 ;
		sss_formal_uncertainty:coordinates = "time longitude latitude" ;
		sss_formal_uncertainty:coverage_content_type = "qualityInformation" ;
// longitude: first -179.875, last 179.875, count 1440
// latitude: first -89.875, last 89.875, count 720
// time: first 1163.0, last 1163.0, count 1
}