Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry
The Chukchi Sea is an important transition region for Pacific-origin waters flowing north through the Bering Strait into the Arctic Ocean. The inflowing waters bring heat and freshwater, influencing the structure and variability of the entire Arctic Ocean. Monitoring processes in the Chukchi Sea is...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5017663 2023-06-11T04:08:57+02:00 Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry Pisareva, M. Müller, F. Seitz, F. Dettmering, D. Schwatke, C. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017663 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-1898 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017663 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-1898 2023-05-28T23:39:14Z The Chukchi Sea is an important transition region for Pacific-origin waters flowing north through the Bering Strait into the Arctic Ocean. The inflowing waters bring heat and freshwater, influencing the structure and variability of the entire Arctic Ocean. Monitoring processes in the Chukchi Sea is crucial for understanding Arctic Ocean variability, especially in a changing climate. While difficult accessibility leads to a lack of oceanographic in-situ measurements in the region, satellite altimetry provides precise information on sea surface at different spatial and temporal scales and can be used for studies of the current patterns. Here we present a novel long-term observational altimetry-based dataset of sea level and ocean currents, created with the implementation of the recent advanced algorithms and special techniques for the reliable detection of leads and determination of sea surface heights in the sea-ice-covered ocean. For the processing of the data, a careful analysis of the standard geophysical corrections was carried out. Altimetry-derived water heights were compared with the sea level from a numerical ocean model and validated against bottom pressure sensors on moorings and tide gauges. The created dataset allows us to observe seasonal and interannual variability of the regional sea level and geostrophic flow. In the first analyses, we investigate the flow through the Bering Strait and its variability in recent years. The divergence of the Alaskan Coastal Current from the coast under the influence of strong winds is assessed, as well as its relation to the strength and position of the Beaufort High. Conference Object Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea Sea ice GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
The Chukchi Sea is an important transition region for Pacific-origin waters flowing north through the Bering Strait into the Arctic Ocean. The inflowing waters bring heat and freshwater, influencing the structure and variability of the entire Arctic Ocean. Monitoring processes in the Chukchi Sea is crucial for understanding Arctic Ocean variability, especially in a changing climate. While difficult accessibility leads to a lack of oceanographic in-situ measurements in the region, satellite altimetry provides precise information on sea surface at different spatial and temporal scales and can be used for studies of the current patterns. Here we present a novel long-term observational altimetry-based dataset of sea level and ocean currents, created with the implementation of the recent advanced algorithms and special techniques for the reliable detection of leads and determination of sea surface heights in the sea-ice-covered ocean. For the processing of the data, a careful analysis of the standard geophysical corrections was carried out. Altimetry-derived water heights were compared with the sea level from a numerical ocean model and validated against bottom pressure sensors on moorings and tide gauges. The created dataset allows us to observe seasonal and interannual variability of the regional sea level and geostrophic flow. In the first analyses, we investigate the flow through the Bering Strait and its variability in recent years. The divergence of the Alaskan Coastal Current from the coast under the influence of strong winds is assessed, as well as its relation to the strength and position of the Beaufort High. |
format |
Conference Object |
author |
Pisareva, M. Müller, F. Seitz, F. Dettmering, D. Schwatke, C. |
spellingShingle |
Pisareva, M. Müller, F. Seitz, F. Dettmering, D. Schwatke, C. Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
author_facet |
Pisareva, M. Müller, F. Seitz, F. Dettmering, D. Schwatke, C. |
author_sort |
Pisareva, M. |
title |
Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
title_short |
Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
title_full |
Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
title_fullStr |
Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
title_full_unstemmed |
Circulation in the Chukchi Sea from a long-term dataset of satellite radar altimetry |
title_sort |
circulation in the chukchi sea from a long-term dataset of satellite radar altimetry |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017663 |
geographic |
Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Strait Chukchi Sea Pacific |
genre |
Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Bering Strait Chukchi Chukchi Sea Sea ice |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-1898 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017663 |
op_doi |
https://doi.org/10.57757/IUGG23-1898 |
_version_ |
1768382616662179840 |