The accuracy of SST retrievals from AATSR: An initial assessment through geophysical validation against in situ radiometers, buoys and other SST data sets

G. K. Corlett, I. J. Barton, C. J. Donlon, M. C. Edwards, S. A. Good, L. A. Horrocks, D. T. Llewellyn-Jones, C. J. Merchant, Peter J Minnett, T. J. Nightingale, E. J. Noyes, A. G. O'Carroll, J. J. Remedios, I. S. Robinson, R. W. Saunders, J. G. Watts

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The Advanced Along-Track Scanning Radiometer (AATSR) was launched on Envisat in March 2002. The AATSR instrument is designed to retrieve precise and accurate global sea surface temperature (SST) that, combined with the large data set collected from its predecessors, ATSR and ATSR-2, will provide a long term record of SST data that is greater than 15 years. This record can be used for independent monitoring and detection of climate change. The AATSR validation programme has successfully completed its initial phase. The programme involves validation of the AATSR derived SST values using in situ radiometers, in situ buoys and global SST fields from other data sets. The results of the initial programme presented here will demonstrate that the AATSR instrument is currently close to meeting its scientific objectives of determining global SST to an accuracy of 0.3 K (one sigma). For night time data, the analysis gives a warm bias of between +0.04 K (0.28 K) for buoys to +0.06 K (0.20 K) for radiometers, with slightly higher errors observed for day time data, showing warm biases of between +0.02 (0.39 K) for buoys to +0.11 K (0.33 K) for radiometers. They show that the ATSR series of instruments continues to be the world leader in delivering accurate space-based observations of SST, which is a key climate parameter.

Original languageEnglish (US)
Pages (from-to)764-769
Number of pages6
JournalAdvances in Space Research
Volume37
Issue number4
DOIs
StatePublished - 2006

Fingerprint

buoys
Along Track Scanning Radiometer
Buoys
sea surface temperature
Radiometers
radiometers
radiometer
retrieval
Scanning
scanning
Temperature
in situ
climate change
daytime
Climate change
night
climate
Temperature distribution
temperature distribution
Monitoring

Keywords

  • ATSR
  • Climate change
  • Remote sensing
  • Sea surface temperature
  • SST
  • Validation

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

The accuracy of SST retrievals from AATSR : An initial assessment through geophysical validation against in situ radiometers, buoys and other SST data sets. / Corlett, G. K.; Barton, I. J.; Donlon, C. J.; Edwards, M. C.; Good, S. A.; Horrocks, L. A.; Llewellyn-Jones, D. T.; Merchant, C. J.; Minnett, Peter J; Nightingale, T. J.; Noyes, E. J.; O'Carroll, A. G.; Remedios, J. J.; Robinson, I. S.; Saunders, R. W.; Watts, J. G.

In: Advances in Space Research, Vol. 37, No. 4, 2006, p. 764-769.

Research output: Contribution to journalArticle

Corlett, GK, Barton, IJ, Donlon, CJ, Edwards, MC, Good, SA, Horrocks, LA, Llewellyn-Jones, DT, Merchant, CJ, Minnett, PJ, Nightingale, TJ, Noyes, EJ, O'Carroll, AG, Remedios, JJ, Robinson, IS, Saunders, RW & Watts, JG 2006, 'The accuracy of SST retrievals from AATSR: An initial assessment through geophysical validation against in situ radiometers, buoys and other SST data sets', Advances in Space Research, vol. 37, no. 4, pp. 764-769. https://doi.org/10.1016/j.asr.2005.09.037
Corlett, G. K. ; Barton, I. J. ; Donlon, C. J. ; Edwards, M. C. ; Good, S. A. ; Horrocks, L. A. ; Llewellyn-Jones, D. T. ; Merchant, C. J. ; Minnett, Peter J ; Nightingale, T. J. ; Noyes, E. J. ; O'Carroll, A. G. ; Remedios, J. J. ; Robinson, I. S. ; Saunders, R. W. ; Watts, J. G. / The accuracy of SST retrievals from AATSR : An initial assessment through geophysical validation against in situ radiometers, buoys and other SST data sets. In: Advances in Space Research. 2006 ; Vol. 37, No. 4. pp. 764-769.
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abstract = "The Advanced Along-Track Scanning Radiometer (AATSR) was launched on Envisat in March 2002. The AATSR instrument is designed to retrieve precise and accurate global sea surface temperature (SST) that, combined with the large data set collected from its predecessors, ATSR and ATSR-2, will provide a long term record of SST data that is greater than 15 years. This record can be used for independent monitoring and detection of climate change. The AATSR validation programme has successfully completed its initial phase. The programme involves validation of the AATSR derived SST values using in situ radiometers, in situ buoys and global SST fields from other data sets. The results of the initial programme presented here will demonstrate that the AATSR instrument is currently close to meeting its scientific objectives of determining global SST to an accuracy of 0.3 K (one sigma). For night time data, the analysis gives a warm bias of between +0.04 K (0.28 K) for buoys to +0.06 K (0.20 K) for radiometers, with slightly higher errors observed for day time data, showing warm biases of between +0.02 (0.39 K) for buoys to +0.11 K (0.33 K) for radiometers. They show that the ATSR series of instruments continues to be the world leader in delivering accurate space-based observations of SST, which is a key climate parameter.",
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AU - Barton, I. J.

AU - Donlon, C. J.

AU - Edwards, M. C.

AU - Good, S. A.

AU - Horrocks, L. A.

AU - Llewellyn-Jones, D. T.

AU - Merchant, C. J.

AU - Minnett, Peter J

AU - Nightingale, T. J.

AU - Noyes, E. J.

AU - O'Carroll, A. G.

AU - Remedios, J. J.

AU - Robinson, I. S.

AU - Saunders, R. W.

AU - Watts, J. G.

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