Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009
This paper examines the role of atmospheric forcing in modifying the pathways of riverine water on the Laptev Sea shelf, using summer-to-winter hydrographic surveys from 2007 to 2009. Over the two consecutive winter seasons of 2007–2008 and 2008–2009 in the area of the winter coastal polynya, our da...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2010
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Online Access: | https://oceanrep.geomar.de/id/eprint/8815/ https://oceanrep.geomar.de/id/eprint/8815/1/Dmitrenko_et_al_final.pdf https://doi.org/10.1016/j.csr.2010.06.012 |
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ftoceanrep:oai:oceanrep.geomar.de:8815 2023-05-15T15:09:55+02:00 Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 Dmitrenko, Igor A. Kirillov, Sergey A. Krumpen, Thomas Makhotin, Mikhail Povl Abrahamsen, E. Willmes, Sascha Bloshkina, Ekaterina Hölemann, Jens A. Kassens, Heidemarie Wegner, Carolyn 2010 text https://oceanrep.geomar.de/id/eprint/8815/ https://oceanrep.geomar.de/id/eprint/8815/1/Dmitrenko_et_al_final.pdf https://doi.org/10.1016/j.csr.2010.06.012 en eng Elsevier https://oceanrep.geomar.de/id/eprint/8815/1/Dmitrenko_et_al_final.pdf Dmitrenko, I. A., Kirillov, S. A., Krumpen, T., Makhotin, M., Povl Abrahamsen, E., Willmes, S., Bloshkina, E., Hölemann, J. A., Kassens, H. and Wegner, C. (2010) Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009. Continental Shelf Research, 30 (15). pp. 1656-1664. DOI 10.1016/j.csr.2010.06.012 <https://doi.org/10.1016/j.csr.2010.06.012>. doi:10.1016/j.csr.2010.06.012 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2010 ftoceanrep https://doi.org/10.1016/j.csr.2010.06.012 2023-04-07T14:57:13Z This paper examines the role of atmospheric forcing in modifying the pathways of riverine water on the Laptev Sea shelf, using summer-to-winter hydrographic surveys from 2007 to 2009. Over the two consecutive winter seasons of 2007–2008 and 2008–2009 in the area of the winter coastal polynya, our data clearly link winter surface salinity fields to the previous summer conditions, with substantially different winter salinity patterns preconditioned by summer atmospheric forcing. In the summer of 2007, dominant along-shore westerly winds in the cyclonic regime force the Lena River runoff to flow eastward. In contrast, in the summer of 2008, dominant along-shore easterly winds over the East Siberian Sea and on-shore northerly winds over the Laptev Sea in the anticyclonic regime lock the riverine water in the vicinity of the Lena Delta. Over the coastal polynya area in the southeastern Laptev Sea these patterns precondition a surface salinity difference of 8–16 psu between the winters of 2008 and 2009. Overall, this indicates a residence time of at least half a year for riverine water on the Laptev Sea shelf. Future climate change associated with an enhanced summer cyclonicity over the eastern Arctic may turn more riverine water eastward along the eastern Siberian coast, resulting in weaker vertical density stratification over the Laptev Sea shelf, with possible impact on the efficiency of vertical mixing and polynya dense water production. Article in Journal/Newspaper Arctic Climate change East Siberian Sea laptev Laptev Sea lena delta lena river OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Laptev Sea Continental Shelf Research 30 15 1656 1664 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
This paper examines the role of atmospheric forcing in modifying the pathways of riverine water on the Laptev Sea shelf, using summer-to-winter hydrographic surveys from 2007 to 2009. Over the two consecutive winter seasons of 2007–2008 and 2008–2009 in the area of the winter coastal polynya, our data clearly link winter surface salinity fields to the previous summer conditions, with substantially different winter salinity patterns preconditioned by summer atmospheric forcing. In the summer of 2007, dominant along-shore westerly winds in the cyclonic regime force the Lena River runoff to flow eastward. In contrast, in the summer of 2008, dominant along-shore easterly winds over the East Siberian Sea and on-shore northerly winds over the Laptev Sea in the anticyclonic regime lock the riverine water in the vicinity of the Lena Delta. Over the coastal polynya area in the southeastern Laptev Sea these patterns precondition a surface salinity difference of 8–16 psu between the winters of 2008 and 2009. Overall, this indicates a residence time of at least half a year for riverine water on the Laptev Sea shelf. Future climate change associated with an enhanced summer cyclonicity over the eastern Arctic may turn more riverine water eastward along the eastern Siberian coast, resulting in weaker vertical density stratification over the Laptev Sea shelf, with possible impact on the efficiency of vertical mixing and polynya dense water production. |
format |
Article in Journal/Newspaper |
author |
Dmitrenko, Igor A. Kirillov, Sergey A. Krumpen, Thomas Makhotin, Mikhail Povl Abrahamsen, E. Willmes, Sascha Bloshkina, Ekaterina Hölemann, Jens A. Kassens, Heidemarie Wegner, Carolyn |
spellingShingle |
Dmitrenko, Igor A. Kirillov, Sergey A. Krumpen, Thomas Makhotin, Mikhail Povl Abrahamsen, E. Willmes, Sascha Bloshkina, Ekaterina Hölemann, Jens A. Kassens, Heidemarie Wegner, Carolyn Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
author_facet |
Dmitrenko, Igor A. Kirillov, Sergey A. Krumpen, Thomas Makhotin, Mikhail Povl Abrahamsen, E. Willmes, Sascha Bloshkina, Ekaterina Hölemann, Jens A. Kassens, Heidemarie Wegner, Carolyn |
author_sort |
Dmitrenko, Igor A. |
title |
Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
title_short |
Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
title_full |
Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
title_fullStr |
Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
title_full_unstemmed |
Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009 |
title_sort |
wind-driven diversion of summer river runoff preconditions the laptev sea coastal polynya hydrography: evidence from summer-to-winter hydrographic records of 2007–2009 |
publisher |
Elsevier |
publishDate |
2010 |
url |
https://oceanrep.geomar.de/id/eprint/8815/ https://oceanrep.geomar.de/id/eprint/8815/1/Dmitrenko_et_al_final.pdf https://doi.org/10.1016/j.csr.2010.06.012 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic East Siberian Sea Laptev Sea |
geographic_facet |
Arctic East Siberian Sea Laptev Sea |
genre |
Arctic Climate change East Siberian Sea laptev Laptev Sea lena delta lena river |
genre_facet |
Arctic Climate change East Siberian Sea laptev Laptev Sea lena delta lena river |
op_relation |
https://oceanrep.geomar.de/id/eprint/8815/1/Dmitrenko_et_al_final.pdf Dmitrenko, I. A., Kirillov, S. A., Krumpen, T., Makhotin, M., Povl Abrahamsen, E., Willmes, S., Bloshkina, E., Hölemann, J. A., Kassens, H. and Wegner, C. (2010) Wind-driven diversion of summer river runoff preconditions the Laptev Sea coastal polynya hydrography: Evidence from summer-to-winter hydrographic records of 2007–2009. Continental Shelf Research, 30 (15). pp. 1656-1664. DOI 10.1016/j.csr.2010.06.012 <https://doi.org/10.1016/j.csr.2010.06.012>. doi:10.1016/j.csr.2010.06.012 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.csr.2010.06.012 |
container_title |
Continental Shelf Research |
container_volume |
30 |
container_issue |
15 |
container_start_page |
1656 |
op_container_end_page |
1664 |
_version_ |
1766341015417913344 |