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| Dataset Title: | Sea-Surface Temperature, Fronts, NOAA GOES-West (G-18), Hourly, NRT, 0.02 degree (~2 km), Lon0360 
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| Institution: | NOAA/NESDIS/STAR (Dataset ID: goes_west_Lon0360) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Data Access Form
| Files
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Click on the map to specify a new center point.
Zoom: ![[The graph you specified. Please be patient.]](https://coastwatch.pfeg.noaa.gov/erddap/griddap/goes_west_Lon0360.png?sea_surface_temperature%5B(2025-11-08T13:00:00Z)%5D%5B(89.99):(-89.99)%5D%5B(0.01):(359.99)%5D&.draw=surface&.vars=longitude%7Clatitude%7Csea_surface_temperature&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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Attributes {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.6545672e+9, 1.7626068e+9;
String axis "T";
String calendar "Gregorian";
String comment "Seconds since 1981-01-01 00:00:00";
String coverage_content_type "coordinate";
String ioos_category "Time";
String long_name "reference time of sst file";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range -89.99, 89.99;
String axis "Y";
String comment "Latitudes for locating data";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
Float32 valid_max 90.0;
Float32 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range 0.01, 359.99;
String axis "X";
String comment "Longitude for locating data";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
}
quality_level {
Byte _FillValue -128;
String _Unsigned "false";
Float64 colorBarMaximum 6.0;
Float64 colorBarMinimum 0.0;
String comment "SST quality levels: 5 corresponds to “clear-sky” pixels and is recommended for operational applications and validation.";
String coverage_content_type "qualityInformation";
String flag_meanings "no_data bad_data not_used not_used not_used best_quality";
Byte flag_values 0, 1, 2, 3, 4, 5;
String ioos_category "Quality";
String long_name "quality level of SST pixel";
Byte valid_max 5;
Byte valid_min 0;
}
l2p_flags {
Int16 _FillValue 32767;
Float64 colorBarMaximum 0.0;
Float64 colorBarMinimum -30000.0;
String comment "L2P common flags in bits 1-3 and data provider flags (from ACSPO mask) in bits 8-16. For backwards compatibility with legacy reader software, the data provider flags (last 9 bits) contain redundant land and ice information that is also available in bits 2 and 3, respectively. Description of individual bits: bit01 (0=IR: 1=microwave); bit02 (0=not_land; 1=land (from land-sea mask)); bit03 (0=not_ice; 1=ice (from first-guess L4 SST)); bits04-08 (reserved,set to 0); bit08 (0=anti-solar; 1=solar); bit09 (0=valid_radiance; 1=invalid_radiance); bit10 (0=nighttime; 1=daytime); bit11 (0=not_land; 1=land (identical to bit02)); bit12 (0=good quality data; 1=twilight_degradation (degraded quality data due to \"twilight\" region)); bit13 (0=not_sunglint; 1=sunglint); bit14 (0=not_ice; 1=ice (identical to bit03)); bit15 (0=sst; 1=SST_not_valid_or_degraded (not_valid or degraded SST w/QL<5)); bit16 (0=water (ocean, lake, river); 1=not_water (land, ice, invalid))";
String coverage_content_type "thematicClassification";
Int16 flag_masks 1, 2, 4, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, -32768;
String flag_meanings "microwave land ice solar invalid_radiance daytime land twilight_degradation sunglint ice SST_not_valid_or_degraded not_water";
String ioos_category "Quality";
String long_name "L2P flags";
Int16 valid_max 32767;
Int16 valid_min -32768;
}
or_number_of_pixels {
Int16 _FillValue 0;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String comment "Original number of pixels from the L2Ps contributing to the SST value, not weighted";
String coverage_content_type "referenceInformation";
String ioos_category "Statistics";
String long_name "number of pixels from the L2Ps contributing to the SST value";
String units "1";
Int16 valid_max 32767;
Int16 valid_min 1;
}
sea_surface_temperature {
Float32 _FillValue -327.68;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String comment "SST obtained by regression with buoy measurements, sensitive to skin SST. Further information at (Petrenko et al., JGR, 2014; doi:10.1002/2013JD020637)";
String coverage_content_type "physicalMeasurement";
String ioos_category "Temperature";
String long_name "sea surface sub-skin temperature";
String source "NOAA";
String standard_name "sea_surface_subskin_temperature";
String units "degree_C";
Float32 valid_max 327.66998;
Float32 valid_min -327.67;
}
dt_analysis {
Float32 _FillValue -327.68;
Float64 colorBarMaximum 5.0;
Float64 colorBarMinimum -5.0;
String comment "Deviation from reference SST, i.e., dt_analysis = SST - reference SST";
String coverage_content_type "qualityInformation";
String ioos_category "Statistics";
String long_name "deviation from SST reference";
String source "CMC0.1deg-CMC-L4-GLOB-v2.0";
String units "kelvin";
Float32 valid_max 327.67;
Float32 valid_min -327.67;
}
satellite_zenith_angle {
Float32 _FillValue -327.68;
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "satellite zenith angle";
String coverage_content_type "referenceInformation";
String ioos_category "Unknown";
String long_name "satellite zenith angle";
String units "degrees";
Float32 valid_max 70.0;
Float32 valid_min 0.0;
}
sses_bias {
Float32 _FillValue -2.048;
Float64 colorBarMaximum 5.0;
Float64 colorBarMinimum 0.0;
String comment "Bias is derived against Piecewise Regression SST produced by local regressions with buoys. Subtracting sses_bias from sea_surface_temperature produces more accurate estimate of SST at the depth of buoys. Further information at (Petrenko et al., JTECH, 2016; doi:10.1175/JTECH-D-15-0166.1)";
String coverage_content_type "qualityInformation";
String ioos_category "Statistics";
String long_name "SSES bias estimate";
String units "degree_C";
Float32 valid_max 2.032;
Float32 valid_min -2.032;
}
sses_standard_deviation {
Float32 _FillValue -0.28;
Float64 colorBarMaximum 5.0;
Float64 colorBarMinimum 0.0;
String comment "Standard deviation of sea_surface_temperature from SST measured by drifting buoys. Further information at (Petrenko et al., JTECH, 2016; doi:10.1175/JTECH-D-15-0166.1)";
String coverage_content_type "qualityInformation";
String ioos_category "Statistics";
String long_name "SSES standard deviation";
String units "degree_C";
Float32 valid_max 2.27;
Float32 valid_min -0.27;
}
wind_speed {
Float32 _FillValue -19.2;
Float64 colorBarMaximum 15.0;
Float64 colorBarMinimum 0.0;
String comment "Typically represents surface winds (10 meters above the sea surface)";
String coverage_content_type "auxiliaryInformation";
String height "10 m";
String ioos_category "Wind";
String long_name "wind speed";
String source "Wind speed from NCEP GFS data";
String standard_name "wind_speed";
String units "m s-1";
Float32 valid_max 19.05;
Float32 valid_min -19.05;
}
sst_dtime {
Float32 _FillValue -5.368709e+8;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum -10.0;
String comment "time plus sst_dtime gives seconds since 1981-01-01 00:00:00 UTC";
String coverage_content_type "referenceInformation";
String ioos_category "Temperature";
String long_name "time difference from reference time";
String units "seconds";
Float32 valid_max 5.368709e+8;
Float32 valid_min -5.368709e+8;
}
sst_gradient_magnitude {
Float32 _FillValue -32.768;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -40.0;
String comment "Gradient magnitude calculated from SST field in all grids with valid SST";
String coverage_content_type "physicalMeasurement";
String ioos_category "Temperature";
String long_name "SST gradient magnitude value";
String units "kelvin/km";
Float32 valid_max 32.767;
Float32 valid_min -32.767;
}
sst_front_position {
Byte _FillValue -128;
String _Unsigned "false";
Float64 colorBarMaximum 1.5;
Float64 colorBarMinimum 0.0;
String comment "Binary indicator of SST front position in the valid SST clear-sky domain: 1 - SST front present, 0 - no front present";
String coverage_content_type "image";
String ioos_category "Temperature";
String long_name "Binary SST front position indicator";
Byte valid_max 1;
Byte valid_min 0;
}
NC_GLOBAL {
String acknowledgement "Please acknowledge the use of these data with the following statement: These data were provided by Group for High Resolution Sea Surface Temperature (GHRSST) and the National Oceanic and Atmospheric Administration (NOAA).";
String cdm_data_type "Grid";
Int32 col_count 18000;
Int32 col_start 0;
String comment "SSTs are a weighted average of the SSTs of contributing pixels. WARNING: some applications are unable to properly handle signed byte values. If byte values > 127 are encountered, subtract 256 from this reported value.";
String Conventions "CF-1.7, ACDD-1.3, COARDS";
String creator_email "Alex.Ignatov@noaa.gov";
String creator_name "Alex Ignatov";
String creator_type "person";
String creator_url "http://www.star.nesdis.noaa.gov";
String date_created "2023-09-07T01:26:07Z";
String defaultGraphQuery "&.vars=longitude%7Clatitude%7Csea_surface_temperature";
Float64 Easternmost_Easting 359.99;
String gds_version_id "02.0";
Float64 geospatial_lat_max 89.99;
Float64 geospatial_lat_min -89.99;
Float64 geospatial_lat_resolution 0.02;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 359.99;
Float64 geospatial_lon_min 0.01;
Float64 geospatial_lon_resolution 0.02;
String geospatial_lon_units "degrees_east";
String grid_mapping_horizontal_datum_name "World Geodetic System 1984";
String grid_mapping_long_name "coordinate reference system";
String grid_mapping_name "latitude_longitude";
String grid_mapping_prime_meridian_name "Greenwich";
String grid_mapping_reference_ellipsoid_name "WGS84";
String history
"Created by the L2-to-L3 conversion tool, which was developed and provided by NOAA/NESDIS/STAR and CCNY. The version is 4.8.1
2025-11-08T16:10:43Z (local files)
2025-11-08T16:10:43Z https://coastwatch.pfeg.noaa.gov/griddap/goes_west_Lon0360.das";
String id "ABI_G18-STAR-L3C-v2.90";
String infoUrl "https://coastwatch.noaa.gov/cwn/products/acspo-global-sst-abi.html";
String institution "NOAA/NESDIS/STAR";
String keywords "abi, angle, atmosphere, atmospheric, bias, binary, contributing, data, deviation, difference, dt_analysis, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, environmental, error, estimate, flags, front, gradient, indicator, information, l2p, l2p_flags, l2ps, l3c, level, magnitude, national, nesdis, noaa, number, ocean, oceans, or_number_of_pixels, pixel, pixels, position, quality, quality_level, reference, satellite, satellite_zenith_angle, science, sea, sea_surface_subskin_temperature, sea_surface_temperature, sensor, service, single, skin, speed, sses, sses_bias, sses_standard_deviation, sst, sst_dtime, sst_front_position, sst_gradient_magnitude, standard, star, statistics, sub, sub-skin, subskin, surface, temperature, time, value, wind, wind_speed, winds, zenith";
String keywords_vocabulary "GCMD Science Keywords";
Float32 l3u_bias_depth_day 0.0;
Float32 l3u_bias_depth_night 0.0;
Float32 l3u_bias_subskin_day 0.0;
Float32 l3u_bias_subskin_night 0.0;
String license "GHRSST protocol describes data use as free and open";
String metadata_link "TBD";
String naming_authority "org.ghrsst";
Float64 Northernmost_Northing 89.99;
String platform "GOES-18";
String processing_level "L3C";
String product_version "L2 algorithm V2.90; L3 algorithm V4.8.1";
String project "Group for High Resolution Sea Surface Temperature";
String publisher_email "ghrsst-po@nceo.ac.uk";
String publisher_name "The GHRSST Project Office";
String publisher_type "group";
String publisher_url "https://www.ghrsst.org";
String references "Data convention: GHRSST Data Specification (GDS) v2.0. Algorithms: ACSPO-ABI (NOAA/NESDIS/STAR)";
Int32 row_count 5920;
Int32 row_start 1540;
String sensor "ABI";
String source "l2p_source : 20251106230000-STAR-L2P_GHRSST-SSTsubskin-ABI_G18-ACSPO_V2.90-v02.0-fv01.0.nc";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -89.99;
String spatial_resolution "0.02 deg";
String sst_luts "LUT_SSES_G18_HYB_RN4D_c1.0.1.nc";
String standard_name_vocabulary "CF Standard Name Table v70";
Float64 Sub_Lon -137.0;
String summary "Sea surface temperature from NOAA GOES-West (GOES-18) satellite using the NOAA Advanced Clear-Sky Processor for Ocean (ACSPO) enterprise system. The near-real time (NRT) data are produced at STAR, with a 2-6 hour latency.";
String testOutOfDate "now-2days";
String time_coverage_end "2025-11-08T13:00:00Z";
String time_coverage_start "2022-06-07T02:00:00Z";
String title "Sea-Surface Temperature, Fronts, NOAA GOES-West (G-18), Hourly, NRT, 0.02 degree (~2 km), Lon0360";
Float64 Westernmost_Easting 0.01;
}
}
Data Access Protocol (DAP) and its
projection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst),
followed by [(start):stride:(stop)]
(or a shorter variation of that) for each of the variable's dimensions
(for example, [time][latitude][longitude]).
For details, see the griddap Documentation.