The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic
Previous versions of the Consortium for Small-scale Modelling (COSMO) numerical weather prediction model have used a constant sea-ice surface temperature, but observations show a high degree of variability on sub-daily timescales. To account for this, we have implemented a thermodynamic sea-ice modu...
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Norwegian Polar Institute
2011
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ftoceanrep:oai:oceanrep.geomar.de:26341 2023-05-15T14:26:25+02:00 The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic Schröder, David Heinemann, Günther Willmes, Sascha 2011 text https://oceanrep.geomar.de/id/eprint/26341/ https://oceanrep.geomar.de/id/eprint/26341/1/2011_Schoeder-Heinemann-Willmes_6334-20924-1-PB.pdf https://doi.org/10.3402/polar.v30i0.6334 en eng Norwegian Polar Institute https://oceanrep.geomar.de/id/eprint/26341/1/2011_Schoeder-Heinemann-Willmes_6334-20924-1-PB.pdf Schröder, D., Heinemann, G. and Willmes, S. (2011) The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic. Polar Research, 30 . p. 6334. DOI 10.3402/polar.v30i0.6334 <https://doi.org/10.3402/polar.v30i0.6334>. doi:10.3402/polar.v30i0.6334 cc_by_nc Article PeerReviewed 2011 ftoceanrep https://doi.org/10.3402/polar.v30i0.6334 2023-04-07T15:15:41Z Previous versions of the Consortium for Small-scale Modelling (COSMO) numerical weather prediction model have used a constant sea-ice surface temperature, but observations show a high degree of variability on sub-daily timescales. To account for this, we have implemented a thermodynamic sea-ice module in COSMO and performed simulations at a resolution of 15 km and 5 km for the Laptev Sea area in April 2008. Temporal and spatial variability of surface and 2-m air temperature are verified by four automatic weather stations deployed along the edge of the western New Siberian polynya during the Transdrift XIII-2 expedition and by surface temperature charts derived from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data. A remarkable agreement between the new model results and these observations demonstrates that the implemented sea-ice module can be applied for short-range simulations. Prescribing the polynya areas daily, our COSMO simulations provide a high-resolution and high-quality atmospheric data set for the Laptev Sea for the period 14–30 April 2008. Based on this data set, we derive a mean total sea-ice production rate of 0.53 km3/day for all Laptev Sea polynyas under the assumption that the polynyas are ice-free and a rate of 0.30 km3/day if a 10-cm-thin ice layer is assumed. Our results indicate that ice production in Laptev Sea polynyas has been overestimated in previous studies. Article in Journal/Newspaper Arctic Arctic laptev Laptev Sea Polar Research Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Laptev Sea Polar Research 30 1 6334 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Previous versions of the Consortium for Small-scale Modelling (COSMO) numerical weather prediction model have used a constant sea-ice surface temperature, but observations show a high degree of variability on sub-daily timescales. To account for this, we have implemented a thermodynamic sea-ice module in COSMO and performed simulations at a resolution of 15 km and 5 km for the Laptev Sea area in April 2008. Temporal and spatial variability of surface and 2-m air temperature are verified by four automatic weather stations deployed along the edge of the western New Siberian polynya during the Transdrift XIII-2 expedition and by surface temperature charts derived from Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data. A remarkable agreement between the new model results and these observations demonstrates that the implemented sea-ice module can be applied for short-range simulations. Prescribing the polynya areas daily, our COSMO simulations provide a high-resolution and high-quality atmospheric data set for the Laptev Sea for the period 14–30 April 2008. Based on this data set, we derive a mean total sea-ice production rate of 0.53 km3/day for all Laptev Sea polynyas under the assumption that the polynyas are ice-free and a rate of 0.30 km3/day if a 10-cm-thin ice layer is assumed. Our results indicate that ice production in Laptev Sea polynyas has been overestimated in previous studies. |
format |
Article in Journal/Newspaper |
author |
Schröder, David Heinemann, Günther Willmes, Sascha |
spellingShingle |
Schröder, David Heinemann, Günther Willmes, Sascha The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
author_facet |
Schröder, David Heinemann, Günther Willmes, Sascha |
author_sort |
Schröder, David |
title |
The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
title_short |
The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
title_full |
The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
title_fullStr |
The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
title_full_unstemmed |
The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic |
title_sort |
impact of a thermodynamic sea-ice module in the cosmo numerical weather prediction model on simulations for the laptev sea, siberian arctic |
publisher |
Norwegian Polar Institute |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/26341/ https://oceanrep.geomar.de/id/eprint/26341/1/2011_Schoeder-Heinemann-Willmes_6334-20924-1-PB.pdf https://doi.org/10.3402/polar.v30i0.6334 |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic Arctic laptev Laptev Sea Polar Research Sea ice |
genre_facet |
Arctic Arctic laptev Laptev Sea Polar Research Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/26341/1/2011_Schoeder-Heinemann-Willmes_6334-20924-1-PB.pdf Schröder, D., Heinemann, G. and Willmes, S. (2011) The impact of a thermodynamic sea-ice module in the COSMO numerical weather prediction model on simulations for the Laptev Sea, Siberian Arctic. Polar Research, 30 . p. 6334. DOI 10.3402/polar.v30i0.6334 <https://doi.org/10.3402/polar.v30i0.6334>. doi:10.3402/polar.v30i0.6334 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.3402/polar.v30i0.6334 |
container_title |
Polar Research |
container_volume |
30 |
container_issue |
1 |
container_start_page |
6334 |
_version_ |
1766298985015803904 |