Sea-ice production over the Laptev Sea shelf inferred from historical summer-to-winter hydrographic observations of 1960s-1990s

The winter net sea-ice production (NSIP) over the Laptev Sea shelf is inferred from continuous summer-to-winter historical salinity records of 1960s–1990s. While the NSIP strongly depends on the assumed salinity of newly formed ice, the NSIP quasi-decadal variability can be linked to the wind-driven...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Dmitrenko, Igor A., Kirillov, Sergey A., Tremblay, L. Bruno, Bauch, Dorothea, Willmes, Sascha
Format: Article in Journal/Newspaper
Language:English
Published: AGU (American Geophysical Union) 2009
Subjects:
Arctic
Laptev Sea
laptev
Sea ice
Online Access:https://oceanrep.geomar.de/id/eprint/2800/
https://oceanrep.geomar.de/id/eprint/2800/1/706_Dmitrenko_2009_SeaiceProductionOverTheLaptev_Artzeit_pubid12159.pdf
https://doi.org/10.1029/2009GL038775
Description
Summary:The winter net sea-ice production (NSIP) over the Laptev Sea shelf is inferred from continuous summer-to-winter historical salinity records of 1960s–1990s. While the NSIP strongly depends on the assumed salinity of newly formed ice, the NSIP quasi-decadal variability can be linked to the wind-driven circulation anomalies in the Laptev Sea region. The increased wind-driven advection of ice away from the Laptev Sea coast when the Arctic Oscillation (AO) is positive implies enhanced coastal polynya sea-ice production and brine release in the shelf water. When the AO is negative, the NSIP and seasonal salinity amplitude tends to weaken. These results are in reasonable agreement with sea-ice observations and modeling.

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