Evaluation of a polynya flux model by means of thermal infrared satellite estimates
We test the ability of a two-dimensional flux model to simulate polynya events with narrow open-water zones by comparing model results to ice-thickness and ice-production estimates derived from thermal infrared Moderate Resolution Imaging Spectroradiometer (MODIS) observations in conjunction with an...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
International Glaciological Society
2011
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/23108/ https://oceanrep.geomar.de/id/eprint/23108/1/Krumpen.pdf |
id |
ftoceanrep:oai:oceanrep.geomar.de:23108 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:23108 2023-05-15T13:29:41+02:00 Evaluation of a polynya flux model by means of thermal infrared satellite estimates Krumpen, Thomas Willmes, Sascha Morales Maqueda, M.A. Gerdes, R. Haas, Christian Hoelemann, Jens Schroeder, David 2011 text https://oceanrep.geomar.de/id/eprint/23108/ https://oceanrep.geomar.de/id/eprint/23108/1/Krumpen.pdf en eng International Glaciological Society https://oceanrep.geomar.de/id/eprint/23108/1/Krumpen.pdf Krumpen, T., Willmes, S., Morales Maqueda, M. A., Gerdes, R., Haas, C., Hoelemann, J. and Schroeder, D. (2011) Evaluation of a polynya flux model by means of thermal infrared satellite estimates. Annals of Glaciology, 52 (57). pp. 52-60. Article PeerReviewed 2011 ftoceanrep 2023-04-07T15:11:48Z We test the ability of a two-dimensional flux model to simulate polynya events with narrow open-water zones by comparing model results to ice-thickness and ice-production estimates derived from thermal infrared Moderate Resolution Imaging Spectroradiometer (MODIS) observations in conjunction with an atmospheric dataset. Given a polynya boundary and an atmospheric dataset, the model correctly reproduces the shape of an 11 day long event, using only a few simple conservation laws. Ice production is slightly overestimated by the model, owing to an underestimated ice thickness. We achieved best model results with the consolidation thickness parameterization developed by Biggs and others (2000). Observed regional discrepancies between model and satellite estimates might be a consequence of the missing representation of the dynamic of the thin-ice thickening (e.g. rafting). We conclude that this simplified polynya model is a valuable tool for studying polynya dynamics and estimating associated fluxes of single polynya events. Article in Journal/Newspaper Annals of Glaciology OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We test the ability of a two-dimensional flux model to simulate polynya events with narrow open-water zones by comparing model results to ice-thickness and ice-production estimates derived from thermal infrared Moderate Resolution Imaging Spectroradiometer (MODIS) observations in conjunction with an atmospheric dataset. Given a polynya boundary and an atmospheric dataset, the model correctly reproduces the shape of an 11 day long event, using only a few simple conservation laws. Ice production is slightly overestimated by the model, owing to an underestimated ice thickness. We achieved best model results with the consolidation thickness parameterization developed by Biggs and others (2000). Observed regional discrepancies between model and satellite estimates might be a consequence of the missing representation of the dynamic of the thin-ice thickening (e.g. rafting). We conclude that this simplified polynya model is a valuable tool for studying polynya dynamics and estimating associated fluxes of single polynya events. |
format |
Article in Journal/Newspaper |
author |
Krumpen, Thomas Willmes, Sascha Morales Maqueda, M.A. Gerdes, R. Haas, Christian Hoelemann, Jens Schroeder, David |
spellingShingle |
Krumpen, Thomas Willmes, Sascha Morales Maqueda, M.A. Gerdes, R. Haas, Christian Hoelemann, Jens Schroeder, David Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
author_facet |
Krumpen, Thomas Willmes, Sascha Morales Maqueda, M.A. Gerdes, R. Haas, Christian Hoelemann, Jens Schroeder, David |
author_sort |
Krumpen, Thomas |
title |
Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
title_short |
Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
title_full |
Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
title_fullStr |
Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
title_full_unstemmed |
Evaluation of a polynya flux model by means of thermal infrared satellite estimates |
title_sort |
evaluation of a polynya flux model by means of thermal infrared satellite estimates |
publisher |
International Glaciological Society |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/23108/ https://oceanrep.geomar.de/id/eprint/23108/1/Krumpen.pdf |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_relation |
https://oceanrep.geomar.de/id/eprint/23108/1/Krumpen.pdf Krumpen, T., Willmes, S., Morales Maqueda, M. A., Gerdes, R., Haas, C., Hoelemann, J. and Schroeder, D. (2011) Evaluation of a polynya flux model by means of thermal infrared satellite estimates. Annals of Glaciology, 52 (57). pp. 52-60. |
_version_ |
1766001993853173760 |