ERDDAP > info > noaacwLEOACSPOSSTL3SCDaily

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	Institution	Dataset ID
data			graph	M		Sea-Surface Temperature, NOAA ACSPO Daily Global 0.02° Gridded Super-collated SST and Thermal Fronts Reanalysis, 2012-present, Daily (L3S-LEO degrees C)		F   I   M	background		NOAA/NESDIS/STAR	noaacwLEOACSPOSSTL3SCDaily

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	acknowledgement	String	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).
attribute	NC_GLOBAL	aggregator_version	String	V1.00
attribute	NC_GLOBAL	cdm_data_type	String	Grid
attribute	NC_GLOBAL	col_count	int	18000
attribute	NC_GLOBAL	col_start	int	0
attribute	NC_GLOBAL	collation_version	String	2.11.0
attribute	NC_GLOBAL	comment	String	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.
attribute	NC_GLOBAL	Conventions	String	CF-1.7, ACDD-1.3, COARDS
attribute	NC_GLOBAL	creator_email	String	Alex.Ignatov at noaa.gov
attribute	NC_GLOBAL	creator_name	String	Alex Ignatov
attribute	NC_GLOBAL	creator_type	String	person
attribute	NC_GLOBAL	creator_url	String	http://www.star.nesdis.noaa.gov
attribute	NC_GLOBAL	date_created	String	2022-09-03T06:02:56Z
attribute	NC_GLOBAL	day_or_night	String	both
attribute	NC_GLOBAL	Easternmost_Easting	double	179.99
attribute	NC_GLOBAL	gds_version_id	String	02.0
attribute	NC_GLOBAL	geospatial_lat_max	double	89.99
attribute	NC_GLOBAL	geospatial_lat_min	double	-89.99
attribute	NC_GLOBAL	geospatial_lat_resolution	double	0.02
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.99
attribute	NC_GLOBAL	geospatial_lon_min	double	-179.99
attribute	NC_GLOBAL	geospatial_lon_resolution	double	0.02
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	grid_mapping_horizontal_datum_name	String	World Geodetic System 1984
attribute	NC_GLOBAL	grid_mapping_long_name	String	coordinate reference system
attribute	NC_GLOBAL	grid_mapping_name	String	latitude_longitude
attribute	NC_GLOBAL	grid_mapping_prime_meridian_name	String	Greenwich
attribute	NC_GLOBAL	grid_mapping_reference_ellipsoid_name	String	WGS84
attribute	NC_GLOBAL	history	String	Created by the L2-to-L3 conversion tool, which was developed and provided by NOAA/NESDIS/STAR and CCNY. The version is 4.9.0
attribute	NC_GLOBAL	id	String	L3S_LEO_DY-STAR-v2.81
attribute	NC_GLOBAL	infoUrl	String	http://www.star.nesdis.noaa.gov
attribute	NC_GLOBAL	institution	String	NOAA/NESDIS/STAR
attribute	NC_GLOBAL	instrument	String	AVHRR,VIIRS
attribute	NC_GLOBAL	keywords	String	angle, area, atmosphere, atmospheric, available, bias, binary, contribution, count, cryosphere, data, deviation, difference, distribution, dt_analysis, dtime, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Cryosphere > Sea Ice > Ice Extent, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Sea Ice > Ice Extent, environmental, equal, error, estimate, extent, flags, fraction, front, gradient, highest, ice, ice distribution, indicator, information, input, l2p, l2p_flags, l3s, l3s-leo-pm, l3s_flags, l3u, leo, level, magnitude, major, measurement_dtime, national, nesdis, noaa, ocean, oceans, office, pixel, pixels, position, produced, quality, quality_level, reference, retrievals, satellite, satellite_zenith_angle, science, sea, sea_ice_area_fraction, sea_ice_fraction, sea_surface_subskin_temperature, sea_surface_temperature, sensor, service, single, skin, source, speed, sses, sses_bias, sses_standard_deviation, sst, sst_count, sst_dtime, sst_front_position, sst_gradient_magnitude, sst_source, standard, star, statistics, sub, sub-skin, subskin, surface, temperature, time, value, weight, weighted, where, wind, wind_speed, winds, zenith
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	GHRSST protocol describes data use as free and open
attribute	NC_GLOBAL	metadata_link	String	https://cmr.earthdata.nasa.gov/search/concepts/C2805339147-POCLOUD
attribute	NC_GLOBAL	naming_authority	String	org.ghrsst
attribute	NC_GLOBAL	Northernmost_Northing	double	89.99
attribute	NC_GLOBAL	platform	String	MetOp-B,MetOp-C,N20,N21,NPP
attribute	NC_GLOBAL	preprocessor_version	String	1.17.0
attribute	NC_GLOBAL	processing_level	String	L3S
attribute	NC_GLOBAL	product_version	String	L2 algorithm V2.80; L3 algorithm V4.9.0
attribute	NC_GLOBAL	project	String	Group for High Resolution Sea Surface Temperature
attribute	NC_GLOBAL	publisher_email	String	ghrsst-po at nceo.ac.uk
attribute	NC_GLOBAL	publisher_name	String	The GHRSST Project Office
attribute	NC_GLOBAL	publisher_type	String	group
attribute	NC_GLOBAL	publisher_url	String	https://www.ghrsst.org
attribute	NC_GLOBAL	references	String	Data convention: GHRSST Data Specification (GDS) v2.0. Algorithms: ACSPO-VIIRS ATBD (NOAA/NESDIS/STAR)
attribute	NC_GLOBAL	row_count	int	9000
attribute	NC_GLOBAL	row_start	int	0
attribute	NC_GLOBAL	sensor	String	AVHRR,VIIRS
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	-89.99
attribute	NC_GLOBAL	spatial_resolution	String	0.02 deg
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	summary	String	Sea surface temperature retrievals produced by NOAA/NESDIS/STAR office
attribute	NC_GLOBAL	testOutOfDate	String	now-95days
attribute	NC_GLOBAL	time_coverage_end	String	2024-08-08T12:00:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2000-02-24T12:00:00Z
attribute	NC_GLOBAL	title	String	Sea-Surface Temperature, NOAA ACSPO Daily Global 0.02° Gridded Super-collated SST and Thermal Fronts Reanalysis, 2012-present, Daily (L3S-LEO degrees C)
attribute	NC_GLOBAL	Westernmost_Easting	double	-179.99
dimension	time		double	nValues=8882, evenlySpaced=false, averageSpacing=1 day 0h 8m 16s
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	9.513936E8, 1.7231184E9
attribute	time	axis	String	T
attribute	time	calendar	String	Gregorian
attribute	time	comment	String	seconds since 1981-01-01 00:00:00
attribute	time	coverage_content_type	String	coordinate
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	reference time of sst file
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
dimension	latitude		float	nValues=9000, evenlySpaced=true, averageSpacing=-0.02
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	-89.99, 89.99
attribute	latitude	axis	String	Y
attribute	latitude	comment	String	Latitudes for locating data
attribute	latitude	coverage_content_type	String	coordinate
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	valid_max	float	90.0
attribute	latitude	valid_min	float	-90.0
dimension	longitude		float	nValues=18000, evenlySpaced=true, averageSpacing=0.02
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	-179.99, 179.99
attribute	longitude	axis	String	X
attribute	longitude	comment	String	Longitude for locating data
attribute	longitude	coverage_content_type	String	coordinate
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	valid_max	float	180.0
attribute	longitude	valid_min	float	-180.0
variable	sea_surface_temperature		float	time, latitude, longitude
attribute	sea_surface_temperature	_FillValue	float	-327.68
attribute	sea_surface_temperature	colorBarMaximum	double	35.0
attribute	sea_surface_temperature	colorBarMinimum	double	0.0
attribute	sea_surface_temperature	comment	String	SST obtained by regression with buoy measurements, sensitive to skin SST. Further information at (Petrenko et al., JGR, 2014; doi:10.1002/2013JD020637)
attribute	sea_surface_temperature	coverage_content_type	String	physicalMeasurement
attribute	sea_surface_temperature	ioos_category	String	Temperature
attribute	sea_surface_temperature	long_name	String	sea surface sub-skin temperature
attribute	sea_surface_temperature	source	String	NOAA
attribute	sea_surface_temperature	standard_name	String	sea_surface_subskin_temperature
attribute	sea_surface_temperature	units	String	degree_C
attribute	sea_surface_temperature	valid_max	float	40.0
attribute	sea_surface_temperature	valid_min	float	-2.0
variable	sses_bias		float	time, latitude, longitude
attribute	sses_bias	_FillValue	float	-275.198
attribute	sses_bias	colorBarMaximum	double	5.0
attribute	sses_bias	colorBarMinimum	double	0.0
attribute	sses_bias	comment	String	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)
attribute	sses_bias	coverage_content_type	String	qualityInformation
attribute	sses_bias	ioos_category	String	Statistics
attribute	sses_bias	long_name	String	SSES bias estimate
attribute	sses_bias	units	String	degree_C
attribute	sses_bias	valid_max	float	-271.118
attribute	sses_bias	valid_min	float	-275.182
variable	sses_standard_deviation		float	time, latitude, longitude
attribute	sses_standard_deviation	_FillValue	float	-274.43
attribute	sses_standard_deviation	colorBarMaximum	double	5.0
attribute	sses_standard_deviation	colorBarMinimum	double	0.0
attribute	sses_standard_deviation	comment	String	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)
attribute	sses_standard_deviation	coverage_content_type	String	qualityInformation
attribute	sses_standard_deviation	ioos_category	String	Statistics
attribute	sses_standard_deviation	long_name	String	SSES standard deviation
attribute	sses_standard_deviation	units	String	degree_C
attribute	sses_standard_deviation	valid_max	float	-271.88
attribute	sses_standard_deviation	valid_min	float	-274.42
variable	l2p_flags		short	time, latitude, longitude
attribute	l2p_flags	_FillValue	short	32767
attribute	l2p_flags	colorBarMaximum	double	0.0
attribute	l2p_flags	colorBarMinimum	double	-30000.0
attribute	l2p_flags	comment	String	L2P common flags in bits 1-3 and data provider flags (from ACSPO mask) in bits 9-16. For backwards compatibility with legacy reader software, the data provider flags (last 8 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); 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))
attribute	l2p_flags	coverage_content_type	String	qualityInformation
attribute	l2p_flags	flag_masks	short	1, 2, 4, 256, 512, 1024, 2048, 4096, 8192, 16384, -32768
attribute	l2p_flags	flag_meanings	String	microwave land ice invalid_radiance daytime land twilight_degradation sunglint ice SST_not_valid_or_degraded not_water
attribute	l2p_flags	ioos_category	String	Quality
attribute	l2p_flags	long_name	String	L2P flags
attribute	l2p_flags	valid_max	short	32767
attribute	l2p_flags	valid_min	short	-32768
variable	l3s_flags		short	time, latitude, longitude
attribute	l3s_flags	_FillValue	short	-32768
attribute	l3s_flags	colorBarMaximum	double	10.0
attribute	l3s_flags	colorBarMinimum	double	0.0
attribute	l3s_flags	comment	String	L3S-LEO data availability flags in bits 1-4 and bits 5-16 are reserved for future use. bit01 (0=L3S-LEO_PM_N unavailable: 1=L3S-LEO_PM_N available); bit02 (0=L3S-LEO_PM_D unavailable: 1=L3S-LEO_PM_D available); bit03 (0=L3S-LEO_AM_N unavailable: 1=L3S-LEO_AM_N available); bit04 (0=L3S-LEO_AM_D unavailable: 1=L3S-LEO_AM_D available)
attribute	l3s_flags	coverage_content_type	String	thematicClassification
attribute	l3s_flags	flag_masks	byte	1, 2, 4, 8
attribute	l3s_flags	flag_meanings	String	LEO_PM_N LEO_PM_D LEO_AM_N LEO_AM_D
attribute	l3s_flags	ioos_category	String	Quality
attribute	l3s_flags	long_name	String	L3S flags
attribute	l3s_flags	valid_max	short	32767
attribute	l3s_flags	valid_min	short	-32767
variable	sst_count		byte	time, latitude, longitude
attribute	sst_count	_FillValue	byte	-128
attribute	sst_count	colorBarMaximum	double	100.0
attribute	sst_count	colorBarMinimum	double	0.0
attribute	sst_count	comment	String	Number of L3U pixels contributing to L3S pixel
attribute	sst_count	coverage_content_type	String	referenceInformation
attribute	sst_count	ioos_category	String	Statistics
attribute	sst_count	long_name	String	Count of input L3U SST pixels
attribute	sst_count	valid_max	byte	127
attribute	sst_count	valid_min	byte	0
variable	quality_level		byte	time, latitude, longitude
attribute	quality_level	_FillValue	byte	-128
attribute	quality_level	colorBarMaximum	double	6.0
attribute	quality_level	colorBarMinimum	double	0.0
attribute	quality_level	comment	String	SST quality levels: 5 corresponds to “clear-sky” pixels and is recommended for operational applications and validation.
attribute	quality_level	coverage_content_type	String	qualityInformation
attribute	quality_level	flag_meanings	String	no_data bad_data not_used not_used not_used best_quality
attribute	quality_level	flag_values	short	0, 1, 2, 3, 4, 5
attribute	quality_level	ioos_category	String	Quality
attribute	quality_level	long_name	String	quality level of SST pixel
attribute	quality_level	valid_max	byte	5
attribute	quality_level	valid_min	byte	0
variable	sst_source		byte	time, latitude, longitude
attribute	sst_source	_FillValue	byte	-128
attribute	sst_source	colorBarMaximum	double	4.0
attribute	sst_source	colorBarMinimum	double	0.0
attribute	sst_source	comment	String	Major contributor to SST. The major contributor is defined as the L3S-LEO product with highest weighed l3s-daily observation.
attribute	sst_source	coverage_content_type	String	qualityInformation
attribute	sst_source	flag_meanings	String	LEO_PM_N LEO_PM_D LEO_AM_N LEO_AM_D
attribute	sst_source	flag_values	byte	0, 1, 2, 3
attribute	sst_source	ioos_category	String	Temperature
attribute	sst_source	long_name	String	Source of major (highest weight) contribution to sst
attribute	sst_source	valid_max	byte	3
attribute	sst_source	valid_min	byte	0
variable	satellite_zenith_angle		float	time, latitude, longitude
attribute	satellite_zenith_angle	_FillValue	float	-327.68
attribute	satellite_zenith_angle	colorBarMaximum	double	90.0
attribute	satellite_zenith_angle	colorBarMinimum	double	-90.0
attribute	satellite_zenith_angle	comment	String	Satellite zenith angle corresponding to L3S-LEO SST measurement with highest weight.
attribute	satellite_zenith_angle	coverage_content_type	String	referenceInformation
attribute	satellite_zenith_angle	height	String	10 m
attribute	satellite_zenith_angle	ioos_category	String	Unknown
attribute	satellite_zenith_angle	long_name	String	satellite zenith angle
attribute	satellite_zenith_angle	units	String	degrees
attribute	satellite_zenith_angle	valid_max	float	327.67
attribute	satellite_zenith_angle	valid_min	float	-327.67
variable	dt_analysis		float	time, latitude, longitude
attribute	dt_analysis	_FillValue	float	-327.68
attribute	dt_analysis	colorBarMaximum	double	5.0
attribute	dt_analysis	colorBarMinimum	double	-5.0
attribute	dt_analysis	comment	String	Deviation from reference SST, i.e., dt_analysis = SST - reference SST
attribute	dt_analysis	coverage_content_type	String	qualityInformation
attribute	dt_analysis	ioos_category	String	Statistics
attribute	dt_analysis	long_name	String	deviation from SST reference
attribute	dt_analysis	source	String	20240808120000-CMC-L4_GHRSST-SSTfnd-CMC0.1deg-GLOB-v02.0-fv03.0.nc
attribute	dt_analysis	units	String	kelvin
attribute	dt_analysis	valid_max	float	327.67
attribute	dt_analysis	valid_min	float	-327.67
variable	sea_ice_fraction		float	time, latitude, longitude
attribute	sea_ice_fraction	_FillValue	float	-1.28
attribute	sea_ice_fraction	colorBarMaximum	double	1.0
attribute	sea_ice_fraction	colorBarMinimum	double	0.0
attribute	sea_ice_fraction	comment	String	Fractional sea ice cover
attribute	sea_ice_fraction	coverage_content_type	String	qualityInformation
attribute	sea_ice_fraction	ioos_category	String	Ice Distribution
attribute	sea_ice_fraction	long_name	String	sea ice fraction
attribute	sea_ice_fraction	source	String	20240808120000-CMC-L4_GHRSST-SSTfnd-CMC0.1deg-GLOB-v02.0-fv03.0.nc
attribute	sea_ice_fraction	standard_name	String	sea_ice_area_fraction
attribute	sea_ice_fraction	units	String	1
attribute	sea_ice_fraction	valid_max	float	1.0
attribute	sea_ice_fraction	valid_min	float	0.0
variable	wind_speed		float	time, latitude, longitude
attribute	wind_speed	_FillValue	float	-0.15
attribute	wind_speed	colorBarMaximum	double	15.0
attribute	wind_speed	colorBarMinimum	double	0.0
attribute	wind_speed	comment	String	Typically represents surface winds (10 meters above the sea surface). The wind speeds reported here are a daily mean value.
attribute	wind_speed	coverage_content_type	String	auxiliaryInformation
attribute	wind_speed	height	String	10 m
attribute	wind_speed	ioos_category	String	Wind
attribute	wind_speed	long_name	String	wind speed
attribute	wind_speed	source	String	MERRA2 tavg1_2d_ocn_Nx: 2d,1-Hourly,Time-Averaged,Single-Level,Assimilation,Ocean Surface Diagnostics
attribute	wind_speed	standard_name	String	wind_speed
attribute	wind_speed	units	String	m s-1
attribute	wind_speed	valid_max	float	38.1
attribute	wind_speed	valid_min	float	0.0
variable	sst_dtime		float	time, latitude, longitude
attribute	sst_dtime	_FillValue	float	-5.368709E8
attribute	sst_dtime	colorBarMaximum	double	10.0
attribute	sst_dtime	colorBarMinimum	double	-10.0
attribute	sst_dtime	comment	String	time plus sst_dtime gives seconds since 1981-01-01 00:00:00 UTC
attribute	sst_dtime	coverage_content_type	String	referenceInformation
attribute	sst_dtime	ioos_category	String	Temperature
attribute	sst_dtime	long_name	String	time difference from reference time
attribute	sst_dtime	units	String	seconds
attribute	sst_dtime	valid_max	float	5.368709E8
attribute	sst_dtime	valid_min	float	-5.368709E8
variable	measurement_dtime		float	time, latitude, longitude
attribute	measurement_dtime	_FillValue	float	-5.368709E8
attribute	measurement_dtime	colorBarMaximum	double	10.0
attribute	measurement_dtime	colorBarMinimum	double	-10.0
attribute	measurement_dtime	comment	String	time plus measurement_dtime gives seconds since 1981-01-01 00:00:00 UTC
attribute	measurement_dtime	coverage_content_type	String	referenceInformation
attribute	measurement_dtime	ioos_category	String	Temperature
attribute	measurement_dtime	long_name	String	time difference of highest weighted input SST from reference time. Is equal to sst_dtime for pixels where L3S-LEO-PM_N is available
attribute	measurement_dtime	units	String	seconds
attribute	measurement_dtime	valid_max	float	5.368709E8
attribute	measurement_dtime	valid_min	float	-5.368709E8
variable	sst_gradient_magnitude		float	time, latitude, longitude
attribute	sst_gradient_magnitude	_FillValue	float	-32.768
attribute	sst_gradient_magnitude	colorBarMaximum	double	40.0
attribute	sst_gradient_magnitude	colorBarMinimum	double	-40.0
attribute	sst_gradient_magnitude	comment	String	Gradient magnitude calculated from SST field in all grids with valid SST
attribute	sst_gradient_magnitude	ioos_category	String	Temperature
attribute	sst_gradient_magnitude	long_name	String	SST gradient magnitude value
attribute	sst_gradient_magnitude	units	String	kelvin/km
attribute	sst_gradient_magnitude	valid_max	float	32.767
attribute	sst_gradient_magnitude	valid_min	float	-32.767
variable	sst_front_position		byte	time, latitude, longitude
attribute	sst_front_position	_FillValue	byte	-128
attribute	sst_front_position	colorBarMaximum	double	1.5
attribute	sst_front_position	colorBarMinimum	double	0.0
attribute	sst_front_position	comment	String	Binary indicator of SST front position in the valid SST clear-sky domain: 1 - SST front present, 0 - no front present
attribute	sst_front_position	ioos_category	String	Temperature
attribute	sst_front_position	long_name	String	Binary SST front position indicator
attribute	sst_front_position	valid_max	byte	1
attribute	sst_front_position	valid_min	byte	0

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.