Deliverable 6.4 Ice-ocean statistics and state estimation V1
Based on a coupled ocean-sea ice model and its adjoint model, we evaluate the capacity of the existing Arctic Ocean observing system on capturing different aspects of the Arctic Ocean changes, using Observing System Simulation Experiments (OSSEs). Subsequently, we produce a 10-year ocean-sea ice syn...
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ftzenodo:oai:zenodo.org:7137504 2023-05-15T14:46:36+02:00 Deliverable 6.4 Ice-ocean statistics and state estimation V1 Lyu, Guokun Serra, Nuna Koehl, Armin Stammer, Detlef 2020-02-04 https://zenodo.org/record/7137504 https://doi.org/10.5281/zenodo.7137504 eng eng info:eu-repo/grantAgreement/EC/H2020/727890/ doi:10.5281/zenodo.7137503 https://zenodo.org/communities/intaros-h2020 https://zenodo.org/record/7137504 https://doi.org/10.5281/zenodo.7137504 oai:zenodo.org:7137504 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Arctic INTAROS Observing System Simulation Experiment Observing Systems Ocean Observing Systems Sea Ice Observing Systems Model In Situ Data Sea Ice Concentration info:eu-repo/semantics/report publication-deliverable 2020 ftzenodo https://doi.org/10.5281/zenodo.713750410.5281/zenodo.7137503 2023-03-10T13:45:16Z Based on a coupled ocean-sea ice model and its adjoint model, we evaluate the capacity of the existing Arctic Ocean observing system on capturing different aspects of the Arctic Ocean changes, using Observing System Simulation Experiments (OSSEs). Subsequently, we produce a 10-year ocean-sea ice synthesis by assimilating all available observations into the system. The main findings are: 1) Moorings deployed in the Fram Strait and along the pathway of Atlantic inflow to the Arctic Ocean are critical to capture the remote-propagating signals. The existing mooring system needs to be enhanced. 2) Sea ice processes, especially sea ice concentration changes, are the dominant mode that is improved by data assimilation. The improvement benefits from the spatiotemporal coverage of sea ice concentration observations. 3) Changes in the temperature and salinity are tiny in the ice-covered region and are caused by enhanced air-sea interaction due to sea ice reduction. Although the availability of hydrographic profiles increased significantly over the past decades, its effects are not apparent in the data assimilation experiments. Report Arctic Arctic Ocean Fram Strait Sea ice Zenodo Arctic Arctic Ocean |
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Open Polar |
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Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Arctic INTAROS Observing System Simulation Experiment Observing Systems Ocean Observing Systems Sea Ice Observing Systems Model In Situ Data Sea Ice Concentration |
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Arctic INTAROS Observing System Simulation Experiment Observing Systems Ocean Observing Systems Sea Ice Observing Systems Model In Situ Data Sea Ice Concentration Lyu, Guokun Serra, Nuna Koehl, Armin Stammer, Detlef Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
topic_facet |
Arctic INTAROS Observing System Simulation Experiment Observing Systems Ocean Observing Systems Sea Ice Observing Systems Model In Situ Data Sea Ice Concentration |
description |
Based on a coupled ocean-sea ice model and its adjoint model, we evaluate the capacity of the existing Arctic Ocean observing system on capturing different aspects of the Arctic Ocean changes, using Observing System Simulation Experiments (OSSEs). Subsequently, we produce a 10-year ocean-sea ice synthesis by assimilating all available observations into the system. The main findings are: 1) Moorings deployed in the Fram Strait and along the pathway of Atlantic inflow to the Arctic Ocean are critical to capture the remote-propagating signals. The existing mooring system needs to be enhanced. 2) Sea ice processes, especially sea ice concentration changes, are the dominant mode that is improved by data assimilation. The improvement benefits from the spatiotemporal coverage of sea ice concentration observations. 3) Changes in the temperature and salinity are tiny in the ice-covered region and are caused by enhanced air-sea interaction due to sea ice reduction. Although the availability of hydrographic profiles increased significantly over the past decades, its effects are not apparent in the data assimilation experiments. |
format |
Report |
author |
Lyu, Guokun Serra, Nuna Koehl, Armin Stammer, Detlef |
author_facet |
Lyu, Guokun Serra, Nuna Koehl, Armin Stammer, Detlef |
author_sort |
Lyu, Guokun |
title |
Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
title_short |
Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
title_full |
Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
title_fullStr |
Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
title_full_unstemmed |
Deliverable 6.4 Ice-ocean statistics and state estimation V1 |
title_sort |
deliverable 6.4 ice-ocean statistics and state estimation v1 |
publishDate |
2020 |
url |
https://zenodo.org/record/7137504 https://doi.org/10.5281/zenodo.7137504 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Fram Strait Sea ice |
genre_facet |
Arctic Arctic Ocean Fram Strait Sea ice |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/727890/ doi:10.5281/zenodo.7137503 https://zenodo.org/communities/intaros-h2020 https://zenodo.org/record/7137504 https://doi.org/10.5281/zenodo.7137504 oai:zenodo.org:7137504 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.713750410.5281/zenodo.7137503 |
_version_ |
1766317798380797952 |