Show simple item record

contributor authorWang, Qiang
contributor authorWekerle, Claudia
contributor authorDanilov, Sergey
contributor authorSidorenko, Dmitry
contributor authorKoldunov, Nikolay
contributor authorSein, Dmitry
contributor authorRabe, Benjamin
contributor authorJung, Thomas
date accessioned2019-09-22T09:04:26Z
date available2019-09-22T09:04:26Z
date copyright10/18/2018 12:00:00 AM
date issued2018
identifier otherJCLI-D-18-0237.1.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4262761
description abstractThe freshwater stored in the Arctic Ocean is an important component of the global climate system. Currently the Arctic liquid freshwater content (FWC) has reached a record high since the beginning of the last century. In this study we use numerical simulations to investigate the impact of sea ice decline on the Arctic liquid FWC and its spatial distribution. The global unstructured-mesh ocean general circulation model Finite Element Sea Ice?Ocean Model (FESOM) with 4.5-km horizontal resolution in the Arctic region is applied. The simulations show that sea ice decline increases the FWC by freshening the ocean through sea ice meltwater and modifies upper ocean circulation at the same time. The two effects together significantly increase the freshwater stored in the Amerasian basin and reduce its amount in the Eurasian basin. The salinification of the upper Eurasian basin is mainly caused by the reduction in the proportion of Pacific Water and the increase in that of Atlantic Water (AW). Consequently, the sea ice decline did not significantly contribute to the observed rapid increase in the Arctic total liquid FWC. However, the changes in the Arctic freshwater spatial distribution indicate that the influence of sea ice decline on the ocean environment is remarkable. Sea ice decline increases the amount of Barents Sea branch AW in the upper Arctic Ocean, thus reducing its supply to the deeper Arctic layers. This study suggests that all the dynamical processes sensitive to sea ice decline should be taken into account when understanding and predicting Arctic changes.
publisherAmerican Meteorological Society
titleRecent Sea Ice Decline Did Not Significantly Increase the Total Liquid Freshwater Content of the Arctic Ocean
typeJournal Paper
journal volume32
journal issue1
journal titleJournal of Climate
identifier doi10.1175/JCLI-D-18-0237.1
journal fristpage15
journal lastpage32
treeJournal of Climate:;2018:;volume 032:;issue 001
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record