Errors in high-latitude SSTs and other geophysical products linked to NOAA-14 AVHRR channel 4 problems

Guillermo Podestá, Manuel Arbelo, Robert Evans, Katherine Kilpatrick, Vicki Halliwell, James Brown

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Errors in brightness temperatures for channel 4 in the Advanced Very High Resolution Radiometer (AVHRR) onboard the NOAA-14 spacecraft are examined. The errors involve a low frequency of occurrence for some values, and a corresponding enhancement of frequency for others. Errors appear to be related to the conversion of analog to digital values. Unfortunately, it is not possible to identify and separate erroneous values. The most apparent errors in geophysical products derived from AVHRR's channel 4 occur at low brightness temperatures, therefore sea surface temperatures in high latitudes (below about 6°C) and cloud-related products must be used with caution, as they may have systematic errors as large as 0.5°C.

Original languageEnglish (US)
Pages (from-to)2-1 - 2-4
JournalGeophysical Research Letters
Volume30
Issue number11
DOIs
StatePublished - Jun 1 2003

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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