Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea
Based upon high-resolution thermal-infrared Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite imagery in combination with ERA-Interim atmospheric reanalysis data, we derived long-term polynya parameters such as polynya area, thin-ice thickness distribution and ice-production rates from...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848612 2023-05-15T14:03:05+02:00 Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea Paul, Stephan Willmes, Sascha Heinemann, Günther MEDIAN LATITUDE: -73.500000 * MEDIAN LONGITUDE: -42.500000 * SOUTH-BOUND LATITUDE: -78.000000 * WEST-BOUND LONGITUDE: -65.000000 * NORTH-BOUND LATITUDE: -69.000000 * EAST-BOUND LONGITUDE: -20.000000 2015-08-07 text/tab-separated-values, 52 data points https://doi.pangaea.de/10.1594/PANGAEA.848612 https://doi.org/10.1594/PANGAEA.848612 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.848612 https://doi.org/10.1594/PANGAEA.848612 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; Heinemann, Günther (2015): Long-term coastal-polynya dynamics in the Southern Weddell Sea from MODIS thermal-infrared imagery. The Cryosphere, 9(6), 2027-2041, https://doi.org/10.5194/tc-9-2027-2015 File format File name File size Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas South_Weddell_Sea SPP1158 Uniform resource locator/link to file Weddell Sea Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.848612 https://doi.org/10.5194/tc-9-2027-2015 2023-01-20T09:06:12Z Based upon high-resolution thermal-infrared Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite imagery in combination with ERA-Interim atmospheric reanalysis data, we derived long-term polynya parameters such as polynya area, thin-ice thickness distribution and ice-production rates from daily cloud-cover corrected thin-ice thickness composites. Our study is based on a thirteen year investigation period (2002-2014) for the austral winter (1 April to 30 September) in the Antarctic Southern Weddell Sea. The focus lies on coastal polynyas which are important hot spots for new-ice formation, bottom-water formation and heat/moisture release into the atmosphere. MODIS has the capability to resolve even very narrow coastal polynyas. Its major disadvantage is the sensor limitation due to cloud cover. We make use of a newly developed and adapted spatial feature reconstruction scheme to account for cloud-covered areas. We find the sea-ice areas in front of Ronne and Brunt Ice Shelf to be the most active with an annual average polynya area of 3018 ± 1298 and 3516 ± 1420 km2 as well as an accumulated volume ice production of 31 ± 13 and 31 ± 12 km**3, respectively. For the remaining four regions, estimates amount to 421 ± 294 km**2 and 4 ± 3 km**3 (Antarctic Peninsula), 1148 ± 432 km**2 and 12 ± 5 km**3 (Iceberg A23A), 901 ± 703 km**2 and 10 ± 8 km**3 (Filchner Ice Shelf) as well as 499 ± 277 km**2 and 5 ± 2 km**3 (Coats Land). Our findings are discussed in comparison to recent studies based on coupled sea-ice/ocean models and passive-microwave satellite imagery, each investigating different parts of the Southern Weddell Sea. Dataset Antarc* Antarctic Antarctic Peninsula Arctic Brunt Ice Shelf Ice Shelf Iceberg* Iceberg* Sea ice The Cryosphere Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Arctic Austral Brunt Ice Shelf ENVELOPE(-22.500,-22.500,-74.750,-74.750) Coats Land ENVELOPE(-27.500,-27.500,-77.000,-77.000) Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) The Antarctic Weddell Weddell Sea ENVELOPE(-65.000000,-20.000000,-69.000000,-78.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
File format File name File size Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas South_Weddell_Sea SPP1158 Uniform resource locator/link to file Weddell Sea |
spellingShingle |
File format File name File size Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas South_Weddell_Sea SPP1158 Uniform resource locator/link to file Weddell Sea Paul, Stephan Willmes, Sascha Heinemann, Günther Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
topic_facet |
File format File name File size Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas South_Weddell_Sea SPP1158 Uniform resource locator/link to file Weddell Sea |
description |
Based upon high-resolution thermal-infrared Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite imagery in combination with ERA-Interim atmospheric reanalysis data, we derived long-term polynya parameters such as polynya area, thin-ice thickness distribution and ice-production rates from daily cloud-cover corrected thin-ice thickness composites. Our study is based on a thirteen year investigation period (2002-2014) for the austral winter (1 April to 30 September) in the Antarctic Southern Weddell Sea. The focus lies on coastal polynyas which are important hot spots for new-ice formation, bottom-water formation and heat/moisture release into the atmosphere. MODIS has the capability to resolve even very narrow coastal polynyas. Its major disadvantage is the sensor limitation due to cloud cover. We make use of a newly developed and adapted spatial feature reconstruction scheme to account for cloud-covered areas. We find the sea-ice areas in front of Ronne and Brunt Ice Shelf to be the most active with an annual average polynya area of 3018 ± 1298 and 3516 ± 1420 km2 as well as an accumulated volume ice production of 31 ± 13 and 31 ± 12 km**3, respectively. For the remaining four regions, estimates amount to 421 ± 294 km**2 and 4 ± 3 km**3 (Antarctic Peninsula), 1148 ± 432 km**2 and 12 ± 5 km**3 (Iceberg A23A), 901 ± 703 km**2 and 10 ± 8 km**3 (Filchner Ice Shelf) as well as 499 ± 277 km**2 and 5 ± 2 km**3 (Coats Land). Our findings are discussed in comparison to recent studies based on coupled sea-ice/ocean models and passive-microwave satellite imagery, each investigating different parts of the Southern Weddell Sea. |
format |
Dataset |
author |
Paul, Stephan Willmes, Sascha Heinemann, Günther |
author_facet |
Paul, Stephan Willmes, Sascha Heinemann, Günther |
author_sort |
Paul, Stephan |
title |
Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
title_short |
Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
title_full |
Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
title_fullStr |
Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
title_full_unstemmed |
Daily MODIS composites of thin-ice thickness and ice-surface temperatures for the Southern Weddell Sea |
title_sort |
daily modis composites of thin-ice thickness and ice-surface temperatures for the southern weddell sea |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848612 https://doi.org/10.1594/PANGAEA.848612 |
op_coverage |
MEDIAN LATITUDE: -73.500000 * MEDIAN LONGITUDE: -42.500000 * SOUTH-BOUND LATITUDE: -78.000000 * WEST-BOUND LONGITUDE: -65.000000 * NORTH-BOUND LATITUDE: -69.000000 * EAST-BOUND LONGITUDE: -20.000000 |
long_lat |
ENVELOPE(-22.500,-22.500,-74.750,-74.750) ENVELOPE(-27.500,-27.500,-77.000,-77.000) ENVELOPE(-40.000,-40.000,-79.000,-79.000) ENVELOPE(-65.000000,-20.000000,-69.000000,-78.000000) |
geographic |
Antarctic Antarctic Peninsula Arctic Austral Brunt Ice Shelf Coats Land Filchner Ice Shelf The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Arctic Austral Brunt Ice Shelf Coats Land Filchner Ice Shelf The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Brunt Ice Shelf Ice Shelf Iceberg* Iceberg* Sea ice The Cryosphere Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Brunt Ice Shelf Ice Shelf Iceberg* Iceberg* Sea ice The Cryosphere Weddell Sea |
op_source |
Supplement to: Paul, Stephan; Willmes, Sascha; Heinemann, Günther (2015): Long-term coastal-polynya dynamics in the Southern Weddell Sea from MODIS thermal-infrared imagery. The Cryosphere, 9(6), 2027-2041, https://doi.org/10.5194/tc-9-2027-2015 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.848612 https://doi.org/10.1594/PANGAEA.848612 |
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.848612 https://doi.org/10.5194/tc-9-2027-2015 |
_version_ |
1766273587684048896 |