Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season
Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-r...
Main Authors: | , , , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2015
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.848914 https://doi.org/10.1594/PANGAEA.848914 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848914 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848914 2023-05-15T13:29:45+02:00 Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph MEDIAN LATITUDE: -70.600241 * MEDIAN LONGITUDE: -7.823489 * SOUTH-BOUND LATITUDE: -70.660667 * WEST-BOUND LONGITUDE: -8.049667 * NORTH-BOUND LATITUDE: -70.552433 * EAST-BOUND LONGITUDE: -7.482317 * DATE/TIME START: 2012-11-23T12:10:00 * DATE/TIME END: 2013-01-07T20:10:00 2015-08-27 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.848914 https://doi.org/10.1594/PANGAEA.848914 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.848914 https://doi.org/10.1594/PANGAEA.848914 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Paul, Stephan; Willmes, Sascha; Hoppmann, Mario; Hunkeler, Priska A; Wesche, Christine; Nicolaus, Marcel; Heinemann, Günther; Timmermann, Ralph (2015): The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter. Annals of Glaciology, 56(69), 263-273, https://doi.org/10.3189/2015AoG69A715 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.848914 https://doi.org/10.3189/2015AoG69A715 2023-01-20T07:33:30Z Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter. Dataset Annals of Glaciology Antarc* Antarctic Antarctica Arctic Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Antarctic Austral Atka ENVELOPE(151.789,151.789,60.835,60.835) ENVELOPE(-8.049667,-7.482317,-70.552433,-70.660667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Up to now, snow cover on Antarctic sea ice and its impact on radar backscatter, particularly after the onset of freeze/thaw processes, are not well understood. Here we present a combined analysis of in situ observations of snow properties from the landfast sea ice in Atka Bay, Antarctica, and high-resolution TerraSAR-X backscatter data, for the transition from austral spring (November 2012) to summer (January 2013). The physical changes in the seasonal snow cover during that time are reflected in the evolution of TerraSAR-X backscatter. We are able to explain 76-93% of the spatio-temporal variability of the TerraSAR-X backscatter signal with up to four snowpack parameters with a root-mean-squared error of 0.87-1.62 dB, using a simple multiple linear model. Over the complete study, and especially after the onset of early-melt processes and freeze/thaw cycles, the majority of variability in the backscatter is influenced by changes in snow/ice interface temperature, snow depth and top-layer grain size. This suggests it may be possible to retrieve snow physical properties over Antarctic sea ice from X-band SAR backscatter. |
format |
Dataset |
author |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph |
author_facet |
Paul, Stephan Willmes, Sascha Hoppmann, Mario Hunkeler, Priska A Wesche, Christine Nicolaus, Marcel Heinemann, Günther Timmermann, Ralph |
author_sort |
Paul, Stephan |
title |
Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
title_short |
Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
title_full |
Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
title_fullStr |
Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
title_full_unstemmed |
Snow-pit measurements on Atka Bay landfast sea ice during ANT-Land 2012/2013 season |
title_sort |
snow-pit measurements on atka bay landfast sea ice during ant-land 2012/2013 season |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848914 https://doi.org/10.1594/PANGAEA.848914 |
op_coverage |
MEDIAN LATITUDE: -70.600241 * MEDIAN LONGITUDE: -7.823489 * SOUTH-BOUND LATITUDE: -70.660667 * WEST-BOUND LONGITUDE: -8.049667 * NORTH-BOUND LATITUDE: -70.552433 * EAST-BOUND LONGITUDE: -7.482317 * DATE/TIME START: 2012-11-23T12:10:00 * DATE/TIME END: 2013-01-07T20:10:00 |
long_lat |
ENVELOPE(151.789,151.789,60.835,60.835) ENVELOPE(-8.049667,-7.482317,-70.552433,-70.660667) |
geographic |
Arctic Antarctic Austral Atka |
geographic_facet |
Arctic Antarctic Austral Atka |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Arctic Sea ice |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Arctic Sea ice |
op_source |
Supplement to: Paul, Stephan; Willmes, Sascha; Hoppmann, Mario; Hunkeler, Priska A; Wesche, Christine; Nicolaus, Marcel; Heinemann, Günther; Timmermann, Ralph (2015): The impact of early-summer snow properties on Antarctic landfast sea-ice X-band backscatter. Annals of Glaciology, 56(69), 263-273, https://doi.org/10.3189/2015AoG69A715 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.848914 https://doi.org/10.1594/PANGAEA.848914 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.848914 https://doi.org/10.3189/2015AoG69A715 |
_version_ |
1766002607701098496 |