Derivation and optimization of a new Antarctic sea-ice record
Abstract. The recently developed Bristol passive-microwave-satellite algorithm for deriving sea-ice concentration has possible theoretical and practical advantages over the widely used NASA/Team and Comiso algorithms. It was applied for the rst time here to derive a long-term sea-ice series. The Bri...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.537.647 2023-05-15T13:52:00+02:00 Derivation and optimization of a new Antarctic sea-ice record E. Hanna J. Bamber The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.537.647 http://www.cpom.org/research/jlb-ijrs.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.537.647 http://www.cpom.org/research/jlb-ijrs.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.cpom.org/research/jlb-ijrs.pdf text ftciteseerx 2016-01-08T10:53:18Z Abstract. The recently developed Bristol passive-microwave-satellite algorithm for deriving sea-ice concentration has possible theoretical and practical advantages over the widely used NASA/Team and Comiso algorithms. It was applied for the rst time here to derive a long-term sea-ice series. The Bristol algorithm was reparameterized by manually tuning its brightness temperature tie-points both seasonally and interannually to systematically account for changing environ-mental conditions, satellite radiometer drift and diŒerences in calibration and observing time between the three Special Sensor Microwave/Imager (SSM/I) sensors. In addition, an automatic algorithm was developed to remove residual noise in SSM/I images. The reparameterized Bristol algorithm performed well against the others tested in an Advanced Very High Resolution Radiometer (AVHRR) thermal infrared case-study validation. The SSM/I sea-ice extent was compared with Geosat radar altimetry and showed good agreement in winter; reasons are proposed to explain the summer diŒerence. The optimized Antarctic sea-ice record spans the whole of the available SSM/I period (July 1987 to December 1997) and reveals a 3 Ô 0.3 % (3 Ô 1.5%) increase in extent (area); it has been used to study Antarctic sea-ice/atmosphere/ocean interactions and climatic couplings. 1. Text Antarc* Antarctic Sea ice Unknown Antarctic |
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Abstract. The recently developed Bristol passive-microwave-satellite algorithm for deriving sea-ice concentration has possible theoretical and practical advantages over the widely used NASA/Team and Comiso algorithms. It was applied for the rst time here to derive a long-term sea-ice series. The Bristol algorithm was reparameterized by manually tuning its brightness temperature tie-points both seasonally and interannually to systematically account for changing environ-mental conditions, satellite radiometer drift and diŒerences in calibration and observing time between the three Special Sensor Microwave/Imager (SSM/I) sensors. In addition, an automatic algorithm was developed to remove residual noise in SSM/I images. The reparameterized Bristol algorithm performed well against the others tested in an Advanced Very High Resolution Radiometer (AVHRR) thermal infrared case-study validation. The SSM/I sea-ice extent was compared with Geosat radar altimetry and showed good agreement in winter; reasons are proposed to explain the summer diŒerence. The optimized Antarctic sea-ice record spans the whole of the available SSM/I period (July 1987 to December 1997) and reveals a 3 Ô 0.3 % (3 Ô 1.5%) increase in extent (area); it has been used to study Antarctic sea-ice/atmosphere/ocean interactions and climatic couplings. 1. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
E. Hanna J. Bamber |
spellingShingle |
E. Hanna J. Bamber Derivation and optimization of a new Antarctic sea-ice record |
author_facet |
E. Hanna J. Bamber |
author_sort |
E. Hanna |
title |
Derivation and optimization of a new Antarctic sea-ice record |
title_short |
Derivation and optimization of a new Antarctic sea-ice record |
title_full |
Derivation and optimization of a new Antarctic sea-ice record |
title_fullStr |
Derivation and optimization of a new Antarctic sea-ice record |
title_full_unstemmed |
Derivation and optimization of a new Antarctic sea-ice record |
title_sort |
derivation and optimization of a new antarctic sea-ice record |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.537.647 http://www.cpom.org/research/jlb-ijrs.pdf |
geographic |
Antarctic |
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Antarctic |
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Antarc* Antarctic Sea ice |
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Antarc* Antarctic Sea ice |
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http://www.cpom.org/research/jlb-ijrs.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.537.647 http://www.cpom.org/research/jlb-ijrs.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766256158098587648 |