Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model
We use a regionally coupled ocean-sea ice-atmosphere-hydrological discharge model to investigate the influence of changes in the atmospheric large-scale circulation on the interannual variability of the Arctic freshwater (FW) components. This model includes all sinks and sources of FW and allows for...
Published in: | Climate Dynamics |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2016
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/40376/ https://epic.awi.de/id/eprint/40376/1/clidyn.pdf http://link.springer.com/article/10.1007/s00382-016-3047-1 https://hdl.handle.net/10013/epic.47457 https://hdl.handle.net/10013/epic.47457.d001 |
id |
ftawi:oai:epic.awi.de:40376 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:40376 2023-05-15T14:27:06+02:00 Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model Niederdrenk, Anne Laura Sein, Dmitry Mikolajewicz, Uwe 2016-03-12 application/pdf https://epic.awi.de/id/eprint/40376/ https://epic.awi.de/id/eprint/40376/1/clidyn.pdf http://link.springer.com/article/10.1007/s00382-016-3047-1 https://hdl.handle.net/10013/epic.47457 https://hdl.handle.net/10013/epic.47457.d001 unknown https://epic.awi.de/id/eprint/40376/1/clidyn.pdf https://hdl.handle.net/10013/epic.47457.d001 Niederdrenk, A. L. , Sein, D. orcid:0000-0002-1190-3622 and Mikolajewicz, U. (2016) Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model , Climate Dynamics . doi:10.1007/s00382-016-3047-1 <https://doi.org/10.1007/s00382-016-3047-1> , hdl:10013/epic.47457 EPIC3Climate Dynamics Article isiRev 2016 ftawi https://doi.org/10.1007/s00382-016-3047-1 2021-12-24T15:41:24Z We use a regionally coupled ocean-sea ice-atmosphere-hydrological discharge model to investigate the influence of changes in the atmospheric large-scale circulation on the interannual variability of the Arctic freshwater (FW) components. This model includes all sinks and sources of FW and allows for the analysis of a closed FW cycle in the Arctic. We show that few atmospheric winter modes explain large parts of the interannual variability of the Arctic FW cycle. A strong Icelandic low causing anomalous strong westerlies over the North Atlantic leads to warmer and wetter conditions over Eurasia. The ocean circulation is then characterized by a strong transpolar drift leading to increased export of FW in liquid and solid form into the North Atlantic. In contrast to this, a weaker than usual Icelandic low and a strong Siberian high is associated with a strong Beaufort Gyre and thus an accumulation of FW within the Arctic Ocean. Not only specific winter conditions but also increased precipitation in late spring and summer, caused by enhanced cyclone activity over land, lead to increased Eurasian runoff, which is responsible for most of the variability in Arctic river runoff. Article in Journal/Newspaper Arctic Arctic Arctic Ocean North Atlantic Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Climate Dynamics 47 12 3883 3900 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
We use a regionally coupled ocean-sea ice-atmosphere-hydrological discharge model to investigate the influence of changes in the atmospheric large-scale circulation on the interannual variability of the Arctic freshwater (FW) components. This model includes all sinks and sources of FW and allows for the analysis of a closed FW cycle in the Arctic. We show that few atmospheric winter modes explain large parts of the interannual variability of the Arctic FW cycle. A strong Icelandic low causing anomalous strong westerlies over the North Atlantic leads to warmer and wetter conditions over Eurasia. The ocean circulation is then characterized by a strong transpolar drift leading to increased export of FW in liquid and solid form into the North Atlantic. In contrast to this, a weaker than usual Icelandic low and a strong Siberian high is associated with a strong Beaufort Gyre and thus an accumulation of FW within the Arctic Ocean. Not only specific winter conditions but also increased precipitation in late spring and summer, caused by enhanced cyclone activity over land, lead to increased Eurasian runoff, which is responsible for most of the variability in Arctic river runoff. |
format |
Article in Journal/Newspaper |
author |
Niederdrenk, Anne Laura Sein, Dmitry Mikolajewicz, Uwe |
spellingShingle |
Niederdrenk, Anne Laura Sein, Dmitry Mikolajewicz, Uwe Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
author_facet |
Niederdrenk, Anne Laura Sein, Dmitry Mikolajewicz, Uwe |
author_sort |
Niederdrenk, Anne Laura |
title |
Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
title_short |
Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
title_full |
Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
title_fullStr |
Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
title_full_unstemmed |
Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
title_sort |
interannual variability of the arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/40376/ https://epic.awi.de/id/eprint/40376/1/clidyn.pdf http://link.springer.com/article/10.1007/s00382-016-3047-1 https://hdl.handle.net/10013/epic.47457 https://hdl.handle.net/10013/epic.47457.d001 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean North Atlantic Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean North Atlantic Sea ice |
op_source |
EPIC3Climate Dynamics |
op_relation |
https://epic.awi.de/id/eprint/40376/1/clidyn.pdf https://hdl.handle.net/10013/epic.47457.d001 Niederdrenk, A. L. , Sein, D. orcid:0000-0002-1190-3622 and Mikolajewicz, U. (2016) Interannual variability of the Arctic freshwater cycle in the second half of the twentieth century in a regionally coupled climate model , Climate Dynamics . doi:10.1007/s00382-016-3047-1 <https://doi.org/10.1007/s00382-016-3047-1> , hdl:10013/epic.47457 |
op_doi |
https://doi.org/10.1007/s00382-016-3047-1 |
container_title |
Climate Dynamics |
container_volume |
47 |
container_issue |
12 |
container_start_page |
3883 |
op_container_end_page |
3900 |
_version_ |
1766300681289859072 |