Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance
Assimilation of remote-sensing products of sea ice thickness (SIT) into sea ice–ocean models has been shown to improve the quality of sea ice forecasts. Key open questions are whether assimilation of lower-level data products such as radar freeboard (RFB) can further improve model performance and wh...
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2018
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Online Access: | https://doi.org/10.5194/tc-12-2569-2018 https://doaj.org/article/d0f016a5cec1438b8e79c3ce4d70564b |
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ftdoajarticles:oai:doaj.org/article:d0f016a5cec1438b8e79c3ce4d70564b 2023-05-15T15:03:41+02:00 Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance T. Kaminski F. Kauker L. Toudal Pedersen M. Voßbeck H. Haak L. Niederdrenk S. Hendricks R. Ricker M. Karcher H. Eicken O. Gråbak 2018-08-01T00:00:00Z https://doi.org/10.5194/tc-12-2569-2018 https://doaj.org/article/d0f016a5cec1438b8e79c3ce4d70564b EN eng Copernicus Publications https://www.the-cryosphere.net/12/2569/2018/tc-12-2569-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2569-2018 1994-0416 1994-0424 https://doaj.org/article/d0f016a5cec1438b8e79c3ce4d70564b The Cryosphere, Vol 12, Pp 2569-2594 (2018) Environmental sciences GE1-350 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/tc-12-2569-2018 2023-01-08T01:35:06Z Assimilation of remote-sensing products of sea ice thickness (SIT) into sea ice–ocean models has been shown to improve the quality of sea ice forecasts. Key open questions are whether assimilation of lower-level data products such as radar freeboard (RFB) can further improve model performance and what performance gains can be achieved through joint assimilation of these data products in combination with a snow depth product. The Arctic Mission Benefit Analysis system was developed to address this type of question. Using the quantitative network design (QND) approach, the system can evaluate, in a mathematically rigorous fashion, the observational constraints imposed by individual and groups of data products. We demonstrate the approach by presenting assessments of the observation impact (added value) of different Earth observation (EO) products in terms of the uncertainty reduction in a 4-week forecast of sea ice volume (SIV) and snow volume (SNV) for three regions along the Northern Sea Route in May 2015 using a coupled model of the sea ice–ocean system, specifically the Max Planck Institute Ocean Model. We assess seven satellite products: three real products and four hypothetical products. The real products are monthly SIT, sea ice freeboard (SIFB), and RFB, all derived from CryoSat-2 by the Alfred Wegener Institute. These are complemented by two hypothetical monthly laser freeboard (LFB) products with low and high accuracy, as well as two hypothetical monthly snow depth products with low and high accuracy. On the basis of the per-pixel uncertainty ranges provided with the CryoSat-2 SIT, SIFB, and RFB products, the SIT and RFB achieve a much better performance for SIV than the SIFB product. For SNV, the performance of SIT is only low, the performance of SIFB is higher and the performance of RFB is yet higher. A hypothetical LFB product with low accuracy (20 cm uncertainty) falls between SIFB and RFB in performance for both SIV and SNV. A reduction in the uncertainty of the LFB product to 2 cm yields a ... Article in Journal/Newspaper Arctic Northern Sea Route Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 12 8 2569 2594 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 T. Kaminski F. Kauker L. Toudal Pedersen M. Voßbeck H. Haak L. Niederdrenk S. Hendricks R. Ricker M. Karcher H. Eicken O. Gråbak Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Assimilation of remote-sensing products of sea ice thickness (SIT) into sea ice–ocean models has been shown to improve the quality of sea ice forecasts. Key open questions are whether assimilation of lower-level data products such as radar freeboard (RFB) can further improve model performance and what performance gains can be achieved through joint assimilation of these data products in combination with a snow depth product. The Arctic Mission Benefit Analysis system was developed to address this type of question. Using the quantitative network design (QND) approach, the system can evaluate, in a mathematically rigorous fashion, the observational constraints imposed by individual and groups of data products. We demonstrate the approach by presenting assessments of the observation impact (added value) of different Earth observation (EO) products in terms of the uncertainty reduction in a 4-week forecast of sea ice volume (SIV) and snow volume (SNV) for three regions along the Northern Sea Route in May 2015 using a coupled model of the sea ice–ocean system, specifically the Max Planck Institute Ocean Model. We assess seven satellite products: three real products and four hypothetical products. The real products are monthly SIT, sea ice freeboard (SIFB), and RFB, all derived from CryoSat-2 by the Alfred Wegener Institute. These are complemented by two hypothetical monthly laser freeboard (LFB) products with low and high accuracy, as well as two hypothetical monthly snow depth products with low and high accuracy. On the basis of the per-pixel uncertainty ranges provided with the CryoSat-2 SIT, SIFB, and RFB products, the SIT and RFB achieve a much better performance for SIV than the SIFB product. For SNV, the performance of SIT is only low, the performance of SIFB is higher and the performance of RFB is yet higher. A hypothetical LFB product with low accuracy (20 cm uncertainty) falls between SIFB and RFB in performance for both SIV and SNV. A reduction in the uncertainty of the LFB product to 2 cm yields a ... |
format |
Article in Journal/Newspaper |
author |
T. Kaminski F. Kauker L. Toudal Pedersen M. Voßbeck H. Haak L. Niederdrenk S. Hendricks R. Ricker M. Karcher H. Eicken O. Gråbak |
author_facet |
T. Kaminski F. Kauker L. Toudal Pedersen M. Voßbeck H. Haak L. Niederdrenk S. Hendricks R. Ricker M. Karcher H. Eicken O. Gråbak |
author_sort |
T. Kaminski |
title |
Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
title_short |
Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
title_full |
Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
title_fullStr |
Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
title_full_unstemmed |
Arctic Mission Benefit Analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
title_sort |
arctic mission benefit analysis: impact of sea ice thickness, freeboard, and snow depth products on sea ice forecast performance |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2569-2018 https://doaj.org/article/d0f016a5cec1438b8e79c3ce4d70564b |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Northern Sea Route Sea ice The Cryosphere |
genre_facet |
Arctic Northern Sea Route Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 12, Pp 2569-2594 (2018) |
op_relation |
https://www.the-cryosphere.net/12/2569/2018/tc-12-2569-2018.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-12-2569-2018 1994-0416 1994-0424 https://doaj.org/article/d0f016a5cec1438b8e79c3ce4d70564b |
op_doi |
https://doi.org/10.5194/tc-12-2569-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
8 |
container_start_page |
2569 |
op_container_end_page |
2594 |
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1766335544251383808 |