NOAA AVHRR Pathfinder Version 5.3 Collated Global 4km Sea Surface Temperature

Dataset Availability: 1981-08-24T00:00:00Z–2023-12-30T21:35:08Z
Dataset Provider: NOAA
Earth Engine Snippet: ee.ImageCollection("NOAA/CDR/SST_PATHFINDER/V53")
Tags: avhrr noaa sst temperature wind
pathfinder

sea-ice

Description

The AVHRR Pathfinder Version 5.3 Sea Surface Temperature dataset (PFV53) is a collection of global, twice-daily 4km sea surface temperature data produced in a partnership by the NOAA National Oceanographic Data Center and the University of Miami's Rosenstiel School of Marine and Atmospheric Science. PFV53 was computed from data from the AVHRR instruments on board NOAA's polar orbiting satellite series using an entirely modernized system based on SeaDAS. PFV53 data are nearly 100% compliant with the GHRSST Data Specification Version 2.0 for L3C products and only deviate from that standard in that 'sses_bias', 'sses_standard_deviation', and 'sst_dtime' variables are empty and hence not included into EE assets. PFV53 data were collected through the operational periods of the NOAA-7 through NOAA-19 Polar Operational Environmental Satellites (POES), and are available from 1981 to 2014. Additional information is available at the NOAA Pathfinder site.

Additional band details can be found in the Tech Specs page.

These data were provided by GHRSST and the US NOAA National Centers for Environmental Information (NCEI). This project was supported in part by a grant from the NOAA Climate Data Record (CDR) Program for satellites.

Bands

Resolution
4000 meters

Bands

Name	Units	Min	Max	Scale	Offset	Description
`sea_surface_temperature`	K	-300*	3999*	0.01	273.15	Skin temperature of the ocean
`dt_analysis`	K	-127*	127*	0.1		The difference between this SST and the previous day's.
`wind_speed`	m/s	0*	47*			These wind speeds were created by NCEP-DOE Atmospheric Model Intercomparison Project (AMIP-II) reanalysis (R-2) and represent winds at 10 meters above the sea surface.
`sea_ice_fraction`		8*	100*	0.01		Sea ice concentration data are taken from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSISAF) Global Daily Sea Ice Concentration Reprocessing Data Set accession.nodc.noaa.gov/0068294 when these data are available. The data are reprojected and interpolated from their original polar stereographic projection at 10km spatial resolution to the 4km Pathfinder Version 5.3 grid. When the OSISAF data are not available for both hemispheres on a given day, the sea ice concentration data are taken from the sea_ice_fraction variable found in the L4 GHRSST DailyOI SST product from NOAA/NCDC, and are interpolated from the 25km DailyOI grid to the 4km Pathfinder Version 5.3 grid.
`aerosol_dynamic_indicator`		-127*	127*	0.01	1.1	Aerosol optical thickness (100 KM) data are taken from the CLASS AERO100 products, which are created from AVHRR channel 1 optical thickness retrievals from AVHRR global area coverage (GAC) data. The aerosol optical thickness measurements are interpolated from their original 1 degree x 1 degree resolution to the 4km Pathfinder Version 5.3 grid.
`quality_level`		0	5			Note, the native Pathfinder processing system returns quality levels ranging from 0 to 7 (7 is best quality; -1 represents missing data) and has been converted to the extent possible into the six levels required by the GDS2 (ranging from 0 to 5, where 5 is best). Below is the conversion table: GDS2 required quality_level 5 = native Pathfinder quality level 7 == best_quality GDS2 required quality_level 4 = native Pathfinder quality level 4-6 == acceptable_quality GDS2 required quality_level 3 = native Pathfinder quality level 2-3 == low_quality GDS2 required quality_level 2 = native Pathfinder quality level 1 == worst_quality GDS2 required quality_level 1 = native Pathfinder quality level 0 = bad_data GDS2 required quality_level 0 = native Pathfinder quality level -1 = missing_data The original Pathfinder quality level is recorded in the optional variable pathfinder_quality_level.
`pathfinder_quality_level`		0	7			The native Pathfinder processing system quality levels, ranging from 0 to 7, where 0 is worst and 7 is best.
`l2p_flags`						Used to specify the type of input SST data and pass through native flags from the input L2 SST data set.
Bitmask for l2p_flags Bit 0: Type of input SST data. 0: Always set to zero to indicate infrared data. Bit 1: Land 0: Input pixel is classified as over ocean. 1: Pixel area is >= 50% land as determined by rasterizing the Global Self-consistent Hierarchical High-resolution Shoreline (GSHHS) Database from the NOAA National Geophysical Data Center. Bit 2: Sea ice fraction 0: 'sea_ice_fraction' is less than 0.15. 1: 'sea_ice_fraction' is 0.15 or greater. Bit 3: Lake 0: Pixel area is < 50% lake covered. 1: Pixel area is >= 50% lake covered as determined from rasterizing US World Wildlife Fund's Global Lakes and Wetlands Database. Bit 4: River 0: Pixel area is < 50% river covered. 1: Pixel area is >= 50% river covered as determined form rasterizing US World Wildlife Fund's Global Lakes and Wetlands Database.

* estimated min or max value

Image Properties

Image Properties

Name	Type	Description
aerosol_dynamic_indicator_offset	DOUBLE	Aerosol dynamic indicator offset
aerosol_dynamic_indicator_scale	DOUBLE	Aerosol dynamic indicator scale
date_created	DOUBLE	Date created
day_or_night	STRING	Day or night
dt_analysis_scale	DOUBLE	Dt analysis scale
orbit_node	STRING	Orbit node
platform	STRING	Platform
principal_day_for_collated_orbits	STRING	Principal day for collated orbits
principal_year_for_collated_orbits	DOUBLE	Principal year for collated orbits
sea_ice_fraction_scale	DOUBLE	Sea ice fraction scale
sea_surface_temperature_offset	DOUBLE	Sea surface temperature offset
sea_surface_temperature_scale	DOUBLE	Sea surface temperature scale
uuid	STRING	Universal unique identifier

Terms of Use

Terms of Use

NOAA data, information, and products, regardless of the method of delivery, are not subject to copyright and carry no restrictions on their subsequent use by the public. Once obtained, they may be put to any lawful use. The forgoing data is in the public domain and is being provided without restriction on use and distribution. For more information see the 'constraints' section in https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3.

Citations

Baker-Yeboah, S., K. Saha, D. Zhang, K. S. Casey, R. Evans, and K. A. Kilpatrick (2016). 'Pathfinder Version 5.3 AVHRR Sea Surface Temperature Climate Data Record', Fall AGU 2016 Poster (manuscript in progress)

DOIs

https://doi.org/10.7289/V52J68XX

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NOAA/CDR/SST_PATHFINDER/V53')
                  .filter(ee.Filter.date('2014-05-01', '2014-05-14'));
var seaSurfaceTemperature = dataset.select('sea_surface_temperature');
var visParams = {
  min: 0.0,
  max: 2500.0,
  palette: [
    '030d81', '0519ff', '05e8ff', '11ff01', 'fbff01', 'ff9901', 'ff0000',
    'ad0000'
  ],
};
Map.setCenter(-121.99, -2.11, 2);
Map.addLayer(seaSurfaceTemperature, visParams, 'Sea Surface Temperature');

Open in Code Editor

NOAA AVHRR Pathfinder Version 5.3 Collated Global 4km Sea Surface Temperature

NOAA/CDR/SST_PATHFINDER/V53, avhrr,noaa,sst,temperature,wind

1981-08-24T00:00:00Z/2023-12-30T21:35:08Z

Google Earth Engine

https://developers.google.com/earth-engine/datasets

https://doi.org/10.7289/V52J68XX