The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change
A time series of summer fresh water content anomalies (FWCA) over the Laptev and East Siberian sea shelves was constructed from historical hydrographic records for the period from 1920 to 2005. Results from a multiple regression between FCWA and various atmospheric and oceanic indices show that the...
Published in: | Journal of Geophysical Research |
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AGU (American Geophysical Union)
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ftoceanrep:oai:oceanrep.geomar.de:3110 2024-09-30T14:31:20+00:00 The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change Dmitrenko, Igor A. Kirillov, Sergey A. Tremblay, L. Bruno 2008 text https://oceanrep.geomar.de/id/eprint/3110/ https://oceanrep.geomar.de/id/eprint/3110/1/349_Dmitrenko_2008_TheLongtermAndInterannualVariability_Artzeit_pubid10514.pdf https://doi.org/10.1029/2007JC004304 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/3110/1/349_Dmitrenko_2008_TheLongtermAndInterannualVariability_Artzeit_pubid10514.pdf Dmitrenko, I. A., Kirillov, S. A. and Tremblay, L. B. (2008) The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change. Open Access Journal of Geophysical Research: Oceans, 113 . C03007. DOI 10.1029/2007JC004304 <https://doi.org/10.1029/2007JC004304>. doi:10.1029/2007JC004304 cc_by_nc_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1029/2007JC004304 2024-09-04T05:04:40Z A time series of summer fresh water content anomalies (FWCA) over the Laptev and East Siberian sea shelves was constructed from historical hydrographic records for the period from 1920 to 2005. Results from a multiple regression between FCWA and various atmospheric and oceanic indices show that the fresh water content on the shelves is mainly controlled by atmospheric vorticity on quasi-decadal timescales. When the vorticity of the atmosphere on the shelves is antycyclonic, approximately 500 km3 of fresh water migrates from the eastern Siberian shelf to the Arctic Ocean through the northeastern Laptev Sea. When the vorticity of the atmosphere is cyclonic, this fresh water remains on the southern Laptev and East Siberian sea shelves. This FWCA represents approximately 35% of the total fresh water inflow provided by river discharge and local sea-ice melt, and is about ten times larger than the standard deviation of the Lena River summer long-term mean discharge. However, the large interannual and spatial variability in the fresh water content of the shelves, as well as the spatial coverage of the hydrographic data, makes it difficult to detect the long-term tendency of fresh water storage associated with climate change. Article in Journal/Newspaper Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea lena river Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Laptev Sea East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Journal of Geophysical Research 113 C3 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
A time series of summer fresh water content anomalies (FWCA) over the Laptev and East Siberian sea shelves was constructed from historical hydrographic records for the period from 1920 to 2005. Results from a multiple regression between FCWA and various atmospheric and oceanic indices show that the fresh water content on the shelves is mainly controlled by atmospheric vorticity on quasi-decadal timescales. When the vorticity of the atmosphere on the shelves is antycyclonic, approximately 500 km3 of fresh water migrates from the eastern Siberian shelf to the Arctic Ocean through the northeastern Laptev Sea. When the vorticity of the atmosphere is cyclonic, this fresh water remains on the southern Laptev and East Siberian sea shelves. This FWCA represents approximately 35% of the total fresh water inflow provided by river discharge and local sea-ice melt, and is about ten times larger than the standard deviation of the Lena River summer long-term mean discharge. However, the large interannual and spatial variability in the fresh water content of the shelves, as well as the spatial coverage of the hydrographic data, makes it difficult to detect the long-term tendency of fresh water storage associated with climate change. |
format |
Article in Journal/Newspaper |
author |
Dmitrenko, Igor A. Kirillov, Sergey A. Tremblay, L. Bruno |
spellingShingle |
Dmitrenko, Igor A. Kirillov, Sergey A. Tremblay, L. Bruno The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
author_facet |
Dmitrenko, Igor A. Kirillov, Sergey A. Tremblay, L. Bruno |
author_sort |
Dmitrenko, Igor A. |
title |
The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
title_short |
The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
title_full |
The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
title_fullStr |
The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
title_full_unstemmed |
The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change |
title_sort |
long-term and interannual variability of summer fresh water storage over the eastern siberian shelf: implication for climatic change |
publisher |
AGU (American Geophysical Union) |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/3110/ https://oceanrep.geomar.de/id/eprint/3110/1/349_Dmitrenko_2008_TheLongtermAndInterannualVariability_Artzeit_pubid10514.pdf https://doi.org/10.1029/2007JC004304 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic Arctic Ocean Laptev Sea East Siberian Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea East Siberian Sea |
genre |
Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea lena river Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea lena river Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/3110/1/349_Dmitrenko_2008_TheLongtermAndInterannualVariability_Artzeit_pubid10514.pdf Dmitrenko, I. A., Kirillov, S. A. and Tremblay, L. B. (2008) The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf: Implication for climatic change. Open Access Journal of Geophysical Research: Oceans, 113 . C03007. DOI 10.1029/2007JC004304 <https://doi.org/10.1029/2007JC004304>. doi:10.1029/2007JC004304 |
op_rights |
cc_by_nc_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2007JC004304 |
container_title |
Journal of Geophysical Research |
container_volume |
113 |
container_issue |
C3 |
_version_ |
1811635940225974272 |