Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry
Snow depth on sea ice is an Essential Climate Variable and a major source of uncertainty in satellite altimetry‐derived sea ice thickness. During winter of the MOSAiC Expedition, the “KuKa” dual‐frequency, fully polarized Ku‐ and Ka‐band radar was deployed in “stare” nadir‐looking mode to investigat...
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American Geophysical Union (AGU)
2023
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10179710 2023-12-24T10:14:22+01:00 Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry Willatt, Rosemary Stroeve, Julienne C Nandan, Vishnu Newman, Thomas Mallett, Robbie Hendricks, Stefan Ricker, Robert Mead, James Itkin, Polona Tonboe, Rasmus Wagner, David N Spreen, Gunnar Liston, Glen Schneebeli, Martin Krampe, Daniela Tsamados, Michel Demir, Oguz Wilkinson, Jeremy Jaggi, Matthias Zhou, Lu Huntemann, Marcus Raphael, Ian A Jutila, Arttu Oggier, Marc 2023-10-28 text https://discovery.ucl.ac.uk/id/eprint/10179710/1/Retrieval%20of%20Snow%20Depth%20on%20Arctic%20Sea%20Ice.pdf https://discovery.ucl.ac.uk/id/eprint/10179710/ eng eng American Geophysical Union (AGU) https://discovery.ucl.ac.uk/id/eprint/10179710/1/Retrieval%20of%20Snow%20Depth%20on%20Arctic%20Sea%20Ice.pdf https://discovery.ucl.ac.uk/id/eprint/10179710/ open Geophysical Research Letters , 50 (20) , Article e2023GL104461. (2023) (In press). sea ice snow radar altimetry polarimetric climate Article 2023 ftucl 2023-11-27T13:07:37Z Snow depth on sea ice is an Essential Climate Variable and a major source of uncertainty in satellite altimetry‐derived sea ice thickness. During winter of the MOSAiC Expedition, the “KuKa” dual‐frequency, fully polarized Ku‐ and Ka‐band radar was deployed in “stare” nadir‐looking mode to investigate the possibility of combining these two frequencies to retrieve snow depth. Three approaches were investigated: dual‐frequency, dual‐polarization and waveform shape, and compared to independent snow depth measurements. Novel dual‐polarization approaches yielded r2 values up to 0.77. Mean snow depths agreed within 1 cm, even for data sub‐banded to CryoSat‐2 SIRAL and SARAL AltiKa bandwidths. Snow depths from co‐polarized dual‐frequency approaches were at least a factor of four too small and had a r2 0.15 or lower. r2 for waveform shape techniques reached 0.72 but depths were underestimated. Snow depth retrievals using polarimetric information or waveform shape may therefore be possible from airborne/satellite radar altimeters. Article in Journal/Newspaper Arctic Sea ice University College London: UCL Discovery Arctic |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
sea ice snow radar altimetry polarimetric climate |
spellingShingle |
sea ice snow radar altimetry polarimetric climate Willatt, Rosemary Stroeve, Julienne C Nandan, Vishnu Newman, Thomas Mallett, Robbie Hendricks, Stefan Ricker, Robert Mead, James Itkin, Polona Tonboe, Rasmus Wagner, David N Spreen, Gunnar Liston, Glen Schneebeli, Martin Krampe, Daniela Tsamados, Michel Demir, Oguz Wilkinson, Jeremy Jaggi, Matthias Zhou, Lu Huntemann, Marcus Raphael, Ian A Jutila, Arttu Oggier, Marc Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
topic_facet |
sea ice snow radar altimetry polarimetric climate |
description |
Snow depth on sea ice is an Essential Climate Variable and a major source of uncertainty in satellite altimetry‐derived sea ice thickness. During winter of the MOSAiC Expedition, the “KuKa” dual‐frequency, fully polarized Ku‐ and Ka‐band radar was deployed in “stare” nadir‐looking mode to investigate the possibility of combining these two frequencies to retrieve snow depth. Three approaches were investigated: dual‐frequency, dual‐polarization and waveform shape, and compared to independent snow depth measurements. Novel dual‐polarization approaches yielded r2 values up to 0.77. Mean snow depths agreed within 1 cm, even for data sub‐banded to CryoSat‐2 SIRAL and SARAL AltiKa bandwidths. Snow depths from co‐polarized dual‐frequency approaches were at least a factor of four too small and had a r2 0.15 or lower. r2 for waveform shape techniques reached 0.72 but depths were underestimated. Snow depth retrievals using polarimetric information or waveform shape may therefore be possible from airborne/satellite radar altimeters. |
format |
Article in Journal/Newspaper |
author |
Willatt, Rosemary Stroeve, Julienne C Nandan, Vishnu Newman, Thomas Mallett, Robbie Hendricks, Stefan Ricker, Robert Mead, James Itkin, Polona Tonboe, Rasmus Wagner, David N Spreen, Gunnar Liston, Glen Schneebeli, Martin Krampe, Daniela Tsamados, Michel Demir, Oguz Wilkinson, Jeremy Jaggi, Matthias Zhou, Lu Huntemann, Marcus Raphael, Ian A Jutila, Arttu Oggier, Marc |
author_facet |
Willatt, Rosemary Stroeve, Julienne C Nandan, Vishnu Newman, Thomas Mallett, Robbie Hendricks, Stefan Ricker, Robert Mead, James Itkin, Polona Tonboe, Rasmus Wagner, David N Spreen, Gunnar Liston, Glen Schneebeli, Martin Krampe, Daniela Tsamados, Michel Demir, Oguz Wilkinson, Jeremy Jaggi, Matthias Zhou, Lu Huntemann, Marcus Raphael, Ian A Jutila, Arttu Oggier, Marc |
author_sort |
Willatt, Rosemary |
title |
Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
title_short |
Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
title_full |
Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
title_fullStr |
Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
title_full_unstemmed |
Retrieval of Snow Depth on Arctic Sea Ice From Surface‐Based, Polarimetric, Dual‐Frequency Radar Altimetry |
title_sort |
retrieval of snow depth on arctic sea ice from surface‐based, polarimetric, dual‐frequency radar altimetry |
publisher |
American Geophysical Union (AGU) |
publishDate |
2023 |
url |
https://discovery.ucl.ac.uk/id/eprint/10179710/1/Retrieval%20of%20Snow%20Depth%20on%20Arctic%20Sea%20Ice.pdf https://discovery.ucl.ac.uk/id/eprint/10179710/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Geophysical Research Letters , 50 (20) , Article e2023GL104461. (2023) (In press). |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10179710/1/Retrieval%20of%20Snow%20Depth%20on%20Arctic%20Sea%20Ice.pdf https://discovery.ucl.ac.uk/id/eprint/10179710/ |
op_rights |
open |
_version_ |
1786193169880186880 |