Overview of the NOAA/NASA Advanced Very High Resolution Radiometer Pathfinder Algorithm for Sea Surface Temperature and Associated Matchup Database
Open accessAbstract
The National Oceanic and Atmospheric Administration (NOAA)/NASA Oceans Pathfinder sea surface temperature (SST) data are derived from measurements made by the advanced very high resolution radiometers (AVHRRs) on board the NOAA 7, 9, 11, and 14 polar orbiting satellites. All versions of the Pathfinder SST algorithm are based on the NOAA/National Environmental Satellite Data and Information Service nonlinear SST operational algorithm (NLSST). Improvements to the NLSST operational algorithm developed by the Pathfinder program include the use of monthly calibration coefficients selected on the basis of channel brightness temperature difference ( T 4 – T 5 ). This channel difference is used as a proxy for water vapor regime. The latest version (version 4.2) of the Pathfinder processing includes the use of decision trees to determine objectively pixel cloud contamination and quality level (0–7) of the SST retrieval. The 1985–1998 series of AVHRR global measurements has been reprocessed using the Pathfinder version 4.2 processing protocol and is available at various temporal and spatial resolutions from NASA's Jet Propulsion Laboratory Distributed Active Archive Center. One of the highlights of the Pathfinder program is that in addition to the daily global area coverage fields, a matchup database of coincident in situ buoy and satellite SST observations also is made available for independent algorithm development and validation.
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- Authors
- Kilpatrick, K. A., Podestá, G. P., & Evans, R.
- Affiliations
- University of Miami (US)
- Venue
- Journal of Geophysical Research: Oceans
- Publisher
- American Geophysical Union (AGU)
- Published
- 2001-05-15
- Volume
- 106
- Issue
- C5
- Pages
- 9179-9197
- ISSN
- 0148-0227 (ISSN-L)
- OpenAlex
- W1967729191
- Cited by
- 569
- References
- 35
- Citations by year
- 2026: 11 · 2025: 19 · 2024: 11 · 2023: 14 · 2022: 27 · 2021: 27 · 2020: 20 · 2019: 23 · 2018: 19 · 2017: 14 · 2016: 25 · 2015: 18 · 2014: 36 · 2013: 32 · 2012: 41
- FWCI
- 46.51
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Geophysical Research Atmospheres (publishedVersion)
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › Calibration and Measurement Techniques
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
- Keywords
- sea surface temperature, AVHRR, satellite SST retrieval, brightness temperature difference, decision tree, polar-orbiting satellites
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