DOI: 10.1175/JCLI-D-18-0237.1
Scopus记录号: 2-s2.0-85058804310
论文题名: Recent sea ice decline did not significantly increase the total liquid freshwater content of the Arctic Ocean
作者: Wang Q. ; Wekerle C. ; Danilov S. ; Sidorenko D. ; Koldunov N. ; Sein D. ; Rabe B. ; Jung T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 1 起始页码: 15
结束页码: 32
语种: 英语
Scopus关键词: Liquids
; Sea ice
; Spatial distribution
; Water
; Dynamical process
; Freshwater contents
; Global climate system
; Horizontal resolution
; Ocean environment
; Ocean general circulation models
; Unstructured meshes
; Upper ocean circulation
; Oceanography
; computer simulation
; finite element method
; freshwater
; liquid
; meltwater
; oceanic general circulation model
; prediction
; sea ice
; spatial distribution
; Amerasian Basin
; Arctic Ocean
; Barents Sea
英文摘要: The 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. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117267
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Wang Q.,Wekerle C.,Danilov S.,et al. Recent sea ice decline did not significantly increase the total liquid freshwater content of the Arctic Ocean[J]. Journal of Climate,2019-01-01,32(1)