Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz
Abstract--Microwave radiometers were operated on a research aircraft during low-level flights in the Arctic in March 2001. Data from these instruments are used to calculate surface emissivity at millimetre wavelengths. This calculation includes the retrieval of an effective temperature from multiple...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.182.333 2023-05-15T14:43:57+02:00 Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz Tim J. Hewison Nathalie Selbach Georg Heygster Jon P. Taylor Andrew J. Mcgrath The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.182.333 http://www.aao.gov.au/local/www/ajm/igarss02.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.182.333 http://www.aao.gov.au/local/www/ajm/igarss02.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aao.gov.au/local/www/ajm/igarss02.pdf text ftciteseerx 2016-01-07T16:29:49Z Abstract--Microwave radiometers were operated on a research aircraft during low-level flights in the Arctic in March 2001. Data from these instruments are used to calculate surface emissivity at millimetre wavelengths. This calculation includes the retrieval of an effective temperature from multiple channels centred at 183 GHz. Emissivity spectra will be presented for a range of surface types, including open water, new ice (nilas), first year, multi-year, and glacial ice. These show that the emissivity of older ice types is lower at 24 GHz, decreases further at higher frequencies, but usually starts to increase by 157 or 183 GHz. These results will help exploit data from satellite instruments, such as AMSU, in the Arctic. Text Arctic Sea ice Unknown Arctic |
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English |
description |
Abstract--Microwave radiometers were operated on a research aircraft during low-level flights in the Arctic in March 2001. Data from these instruments are used to calculate surface emissivity at millimetre wavelengths. This calculation includes the retrieval of an effective temperature from multiple channels centred at 183 GHz. Emissivity spectra will be presented for a range of surface types, including open water, new ice (nilas), first year, multi-year, and glacial ice. These show that the emissivity of older ice types is lower at 24 GHz, decreases further at higher frequencies, but usually starts to increase by 157 or 183 GHz. These results will help exploit data from satellite instruments, such as AMSU, in the Arctic. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Tim J. Hewison Nathalie Selbach Georg Heygster Jon P. Taylor Andrew J. Mcgrath |
spellingShingle |
Tim J. Hewison Nathalie Selbach Georg Heygster Jon P. Taylor Andrew J. Mcgrath Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
author_facet |
Tim J. Hewison Nathalie Selbach Georg Heygster Jon P. Taylor Andrew J. Mcgrath |
author_sort |
Tim J. Hewison |
title |
Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
title_short |
Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
title_full |
Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
title_fullStr |
Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
title_full_unstemmed |
Airborne Measurements of Arctic Sea Ice, Glacier and Snow Emissivity at 24-183 GHz |
title_sort |
airborne measurements of arctic sea ice, glacier and snow emissivity at 24-183 ghz |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.182.333 http://www.aao.gov.au/local/www/ajm/igarss02.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
http://www.aao.gov.au/local/www/ajm/igarss02.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.182.333 http://www.aao.gov.au/local/www/ajm/igarss02.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766315541058813952 |