Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data
Time-series microwave satellite observations are used to investigate seasonal and interannual changes in the surface characteristics of the Antarctic ice sheet. Enhanced-resolution Cband ERS-1/2 scatterometer (ESCAT) backscatter and DMSP SSMI brightness temperature images of Antarctica, acquired on...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1999
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.2515 http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.42.2515 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.42.2515 2023-05-15T13:34:17+02:00 Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data Andrew W. Bingham Mark R. Drinkwater The Pennsylvania State University CiteSeerX Archives 1999 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.2515 http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.2515 http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf text 1999 ftciteseerx 2016-01-08T03:55:39Z Time-series microwave satellite observations are used to investigate seasonal and interannual changes in the surface characteristics of the Antarctic ice sheet. Enhanced-resolution Cband ERS-1/2 scatterometer (ESCAT) backscatter and DMSP SSMI brightness temperature images of Antarctica, acquired on a 3-day interval between 1992 and 1997, have been analysed. Both ESCAT and SSMI data show a clear seasonal cycle over all areas of the ice sheet. Using multi-layered radiative transfer models we demonstrate these cycles result primarily from thermal forcing. We also note significant interannual trends in both data sets. At the margins of the ice sheet, where melting is known to have occurred, backscatter and brightness temperature trends are typically less than-0.25 dB/year and greater than +1 K/year, respectively. It is likely these trends are linked to accumulation of new snow and successive burial of scatterers (formed during the last significant summer melt period) . In the interior of t. Text Antarc* Antarctic Antarctica Ice Sheet Unknown Antarctic The Antarctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Time-series microwave satellite observations are used to investigate seasonal and interannual changes in the surface characteristics of the Antarctic ice sheet. Enhanced-resolution Cband ERS-1/2 scatterometer (ESCAT) backscatter and DMSP SSMI brightness temperature images of Antarctica, acquired on a 3-day interval between 1992 and 1997, have been analysed. Both ESCAT and SSMI data show a clear seasonal cycle over all areas of the ice sheet. Using multi-layered radiative transfer models we demonstrate these cycles result primarily from thermal forcing. We also note significant interannual trends in both data sets. At the margins of the ice sheet, where melting is known to have occurred, backscatter and brightness temperature trends are typically less than-0.25 dB/year and greater than +1 K/year, respectively. It is likely these trends are linked to accumulation of new snow and successive burial of scatterers (formed during the last significant summer melt period) . In the interior of t. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Andrew W. Bingham Mark R. Drinkwater |
spellingShingle |
Andrew W. Bingham Mark R. Drinkwater Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
author_facet |
Andrew W. Bingham Mark R. Drinkwater |
author_sort |
Andrew W. Bingham |
title |
Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
title_short |
Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
title_full |
Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
title_fullStr |
Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
title_full_unstemmed |
Seasonal and Interannual Trends in Antarctic Ice Sheet Microwave Data |
title_sort |
seasonal and interannual trends in antarctic ice sheet microwave data |
publishDate |
1999 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.2515 http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.42.2515 http://polar.jpl.nasa.gov/Publications/awb_igass99.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766051209505931264 |