NOAA AVHRR Pathfinder Version 5.3 Collated Global 4km Sea Surface Temperature (NOAA/CDR/SST_PATHFINDER/V53)

Version 5.3

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.

sea_surface_temperatureSkin temperature of the oceanK0.001273.15
dt_analysisThe difference between this SST and the previous day's. K0.1
wind_speedThese wind speeds were created by NCEP-DOE Atmospheric Model Intercomparison Project (AMIP-II) reanalysis (R-2) and represent winds at 10 metres above the sea surface.m/s
sea_ice_fractionSea ice concentration data are taken from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSISAF) Global Daily Sea Ice Concentration Reprocessing Data Set [] ( 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.0.01
aerosol_dynamic_indicatorAerosol 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.0.011.1
quality_levelNote, 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_levelThe native Pathfinder processing system quality levels, ranging from 0 to 7, where 0 is worst and 7 is best.
l2p_flagsUsed to specify the type of input SST data and pass through native flags from the input L2 SST data set.


NOAA (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.2
Keywords avhrr, noaa, pathfinder, sea_ice, sst, temperature, wind
License proprietary
Temporal Extent 8/23/1981, 5:00:00 PM - 12/30/2014, 4:00:00 PM
Citation 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)
Type image_collection
GSD metersm
Cadence hours
cube:dimensions {"x":{"type":"spatial","axis":"x","extent":[-180,180]},"y":{"type":"spatial","axis":"y","extent":[-90,90]},"temporal":{"type":"temporal","extent":["1981-08-24T00:00:00Z","2014-12-31T00:00:00Z"]},"bands":{"type":"bands","values":["sea_surface_temperature","dt_analysis","wind_speed","sea_ice_fraction","aerosol_dynamic_indicator","quality_level","pathfinder_quality_level","l2p_flags"]}}