2000: An analysis of Pathfinder SST algorithm for global and regional conditions
(NASA) and National Oceanic and Atmospheric Administration (NOAA) a large database of in situ sea surface temperature (SST) measurements coincident with satellite data is now available to the user community. The Pathfinder Matchup Database (PMDB) is a multi-year, multi-satellite collection of coinci...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.549.1338 2023-05-15T17:33:40+02:00 2000: An analysis of Pathfinder SST algorithm for global and regional conditions Ajoy Kumar Peter Minnett Guillermo Podest a Robert Evans Katherine Kilpatrick The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.1338 http://www.ias.ac.in/jess/dec2000/E1409.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.1338 http://www.ias.ac.in/jess/dec2000/E1409.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ias.ac.in/jess/dec2000/E1409.pdf text ftciteseerx 2016-01-08T11:25:40Z (NASA) and National Oceanic and Atmospheric Administration (NOAA) a large database of in situ sea surface temperature (SST) measurements coincident with satellite data is now available to the user community. The Pathfinder Matchup Database (PMDB) is a multi-year, multi-satellite collection of coincident measurements from the Advanced Very High Resolution Radiometer (AVHRR) and broadly distributed buoy data (matchups). This database allows the user community to test and validate new SST algorithms to improve the present accuracy of surface temperature measurements from satellites. In this paper we investigate the performance of a global Pathfinder algorithm to specific regional conditions. It is shown that for zenith angles less than 45, the best-expected statistical discrepancy between satellite and buoy data is about 0:5 K. In general, the bias of the residuals (satellite- buoy) is negative in most regions, except in the North Atlantic and adjacent seas, where the residuals are always positive. A seasonal signal in SST residuals is observed in all regions and is strongest in the Indian Ocean. The channel-difference term used as a proxy for atmospheric water vapor correction is observed to be unresponsive for columnar water vapor values greater than 45 mm and high zenith angles. This unresponsiveness of the channels leads to underestimation of sea surface temperature from satellites in these conditions. 1. Text North Atlantic Unknown Indian |
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English |
description |
(NASA) and National Oceanic and Atmospheric Administration (NOAA) a large database of in situ sea surface temperature (SST) measurements coincident with satellite data is now available to the user community. The Pathfinder Matchup Database (PMDB) is a multi-year, multi-satellite collection of coincident measurements from the Advanced Very High Resolution Radiometer (AVHRR) and broadly distributed buoy data (matchups). This database allows the user community to test and validate new SST algorithms to improve the present accuracy of surface temperature measurements from satellites. In this paper we investigate the performance of a global Pathfinder algorithm to specific regional conditions. It is shown that for zenith angles less than 45, the best-expected statistical discrepancy between satellite and buoy data is about 0:5 K. In general, the bias of the residuals (satellite- buoy) is negative in most regions, except in the North Atlantic and adjacent seas, where the residuals are always positive. A seasonal signal in SST residuals is observed in all regions and is strongest in the Indian Ocean. The channel-difference term used as a proxy for atmospheric water vapor correction is observed to be unresponsive for columnar water vapor values greater than 45 mm and high zenith angles. This unresponsiveness of the channels leads to underestimation of sea surface temperature from satellites in these conditions. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ajoy Kumar Peter Minnett Guillermo Podest a Robert Evans Katherine Kilpatrick |
spellingShingle |
Ajoy Kumar Peter Minnett Guillermo Podest a Robert Evans Katherine Kilpatrick 2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
author_facet |
Ajoy Kumar Peter Minnett Guillermo Podest a Robert Evans Katherine Kilpatrick |
author_sort |
Ajoy Kumar |
title |
2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
title_short |
2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
title_full |
2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
title_fullStr |
2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
title_full_unstemmed |
2000: An analysis of Pathfinder SST algorithm for global and regional conditions |
title_sort |
2000: an analysis of pathfinder sst algorithm for global and regional conditions |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.1338 http://www.ias.ac.in/jess/dec2000/E1409.pdf |
geographic |
Indian |
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Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www.ias.ac.in/jess/dec2000/E1409.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.1338 http://www.ias.ac.in/jess/dec2000/E1409.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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