Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4
Sea ice information has traditionally been associated with Manual Ice Charts, however the demand for accurate forecasts is increasing. This study presents an improved operational forecast system for the Arctic sea ice focusing on the Greenlandic waters. In addition, we present different observationa...
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Online Access: | https://doi.org/10.3389/fmars.2023.979782.s001 https://figshare.com/articles/media/Video_1_Greenlandic_sea_ice_products_with_a_focus_on_an_updated_operational_forecast_system_mp4/21989069 |
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ftfrontimediafig:oai:figshare.com:article/21989069 2024-09-15T18:10:12+00:00 Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 Leandro Ponsoni Mads Hvid Ribergaard Pia Nielsen-Englyst Tore Wulf Jørgen Buus-Hinkler Matilde Brandt Kreiner Till Andreas Soya Rasmussen 2023-02-01T11:59:29Z https://doi.org/10.3389/fmars.2023.979782.s001 https://figshare.com/articles/media/Video_1_Greenlandic_sea_ice_products_with_a_focus_on_an_updated_operational_forecast_system_mp4/21989069 unknown doi:10.3389/fmars.2023.979782.s001 https://figshare.com/articles/media/Video_1_Greenlandic_sea_ice_products_with_a_focus_on_an_updated_operational_forecast_system_mp4/21989069 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Greenland sea ice conditions sea ice edge forecast operational system ocean modelling satellite sea ice charts Dataset Media 2023 ftfrontimediafig https://doi.org/10.3389/fmars.2023.979782.s001 2024-08-19T06:19:59Z Sea ice information has traditionally been associated with Manual Ice Charts, however the demand for accurate forecasts is increasing. This study presents an improved operational forecast system for the Arctic sea ice focusing on the Greenlandic waters. In addition, we present different observational sea ice products and conduct inter-comparisons. First, a re-analysis forced by ERA5 from 2000 to 2021 is evaluated to ensure that the forecast system is stable over time and to provide statistics for the users. The output is similar to the initial conditions for a forecast. Secondly, the sea ice forecast system is tested and evaluated based on two re-forecasts forced by the high resolution ECMWF-HRES forecast for the period from January 2019 to September 2021. Both the re-analysis and the re-forecasts include assimilation of sea surface temperatures and sea ice concentrations. We validate the re-analysis and the re-forecast systems for sea ice concentration against different remotely sensed observational products by computing the Integrated Ice Edge Error metric at the initial conditions of each system. The results reveal that the re-analysis and the re-forecast perform well. However, the summertime retreat of sea ice near the western Greenlandic coast seems to be delayed a few days compared with the observations. Importantly, part of the bias associated with the model representation of the sea ice edge is associated with the observational errors due to limitations in the passive microwave product in summertime and also near the coast. An inter-comparison of the observational sea ice products suggests that the model performance could be improved by assimilation of sea ice concentrations derived from a newly-developed automated sea ice product. In addition, analysis of persistence shows that the re-forecast has better skill than the persistence forecast for the vast majority of the time. Dataset Greenland Greenland Sea greenlandic Sea ice Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Greenland sea ice conditions sea ice edge forecast operational system ocean modelling satellite sea ice charts |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Greenland sea ice conditions sea ice edge forecast operational system ocean modelling satellite sea ice charts Leandro Ponsoni Mads Hvid Ribergaard Pia Nielsen-Englyst Tore Wulf Jørgen Buus-Hinkler Matilde Brandt Kreiner Till Andreas Soya Rasmussen Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Greenland sea ice conditions sea ice edge forecast operational system ocean modelling satellite sea ice charts |
description |
Sea ice information has traditionally been associated with Manual Ice Charts, however the demand for accurate forecasts is increasing. This study presents an improved operational forecast system for the Arctic sea ice focusing on the Greenlandic waters. In addition, we present different observational sea ice products and conduct inter-comparisons. First, a re-analysis forced by ERA5 from 2000 to 2021 is evaluated to ensure that the forecast system is stable over time and to provide statistics for the users. The output is similar to the initial conditions for a forecast. Secondly, the sea ice forecast system is tested and evaluated based on two re-forecasts forced by the high resolution ECMWF-HRES forecast for the period from January 2019 to September 2021. Both the re-analysis and the re-forecasts include assimilation of sea surface temperatures and sea ice concentrations. We validate the re-analysis and the re-forecast systems for sea ice concentration against different remotely sensed observational products by computing the Integrated Ice Edge Error metric at the initial conditions of each system. The results reveal that the re-analysis and the re-forecast perform well. However, the summertime retreat of sea ice near the western Greenlandic coast seems to be delayed a few days compared with the observations. Importantly, part of the bias associated with the model representation of the sea ice edge is associated with the observational errors due to limitations in the passive microwave product in summertime and also near the coast. An inter-comparison of the observational sea ice products suggests that the model performance could be improved by assimilation of sea ice concentrations derived from a newly-developed automated sea ice product. In addition, analysis of persistence shows that the re-forecast has better skill than the persistence forecast for the vast majority of the time. |
format |
Dataset |
author |
Leandro Ponsoni Mads Hvid Ribergaard Pia Nielsen-Englyst Tore Wulf Jørgen Buus-Hinkler Matilde Brandt Kreiner Till Andreas Soya Rasmussen |
author_facet |
Leandro Ponsoni Mads Hvid Ribergaard Pia Nielsen-Englyst Tore Wulf Jørgen Buus-Hinkler Matilde Brandt Kreiner Till Andreas Soya Rasmussen |
author_sort |
Leandro Ponsoni |
title |
Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
title_short |
Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
title_full |
Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
title_fullStr |
Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
title_full_unstemmed |
Video_1_Greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
title_sort |
video_1_greenlandic sea ice products with a focus on an updated operational forecast system.mp4 |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.979782.s001 https://figshare.com/articles/media/Video_1_Greenlandic_sea_ice_products_with_a_focus_on_an_updated_operational_forecast_system_mp4/21989069 |
genre |
Greenland Greenland Sea greenlandic Sea ice |
genre_facet |
Greenland Greenland Sea greenlandic Sea ice |
op_relation |
doi:10.3389/fmars.2023.979782.s001 https://figshare.com/articles/media/Video_1_Greenlandic_sea_ice_products_with_a_focus_on_an_updated_operational_forecast_system_mp4/21989069 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2023.979782.s001 |
_version_ |
1810447806023860224 |