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Satellite-observed trends in the Arctic sea ice concentration for the period 1979-2016
Wang Yunhe1,2; Bi Haibo1,3; Huang Haijun1,2,3; Liu Yanxia1,3; Liu Yilin4; Liang Xi5; Fu Min5; Zhang Zehua1,3
Corresponding AuthorBi Haibo( ; Huang Haijun(
AbstractArctic sea ice cover has decreased dramatically over the last three decades. This study quantifies the sea ice concentration (SIC) trends in the Arctic Ocean over the period of 1979-2016 and analyzes their spatial and temporal variations. During each month the SIC trends are negative over the Arctic Ocean, wherein the largest (smallest) rate of decline found in September (March) is -0.48%/a (-0.10%/a). The summer (-0.42%/a) and autumn (-0.31%/a) seasons show faster decrease rates than those of winter (-0.12%/a) and spring (-0.20%/a) seasons. Regional variability is large in the annual SIC trend. The largest SIC trends are observed for the Kara (-0.60%/a) and Barents Seas (-0.54%/a), followed by the Chukchi Sea (-0.48%/a), East Siberian Sea (-0.43%/a), Laptev Sea (-0.38%/a), and Beaufort Sea (-0.36%/a). The annual SIC trend for the whole Arctic Ocean is -0.26%/a over the same period. Furthermore, the influences and feedbacks between the SIC and three climate indexes and three climatic parameters, including the Arctic Oscillation (AO), North Atlantic Oscillation (NAO), Dipole anomaly (DA), sea surface temperature (SST), surface air temperature (SAT), and surface wind (SW), are investigated. Statistically, sea ice provides memory for the Arctic climate system so that changes in SIC driven by the climate indices (AO, NAO and DA) can be felt during the ensuing seasons. Positive SST trends can cause greater SIC reductions, which is observed in the Greenland and Barents Seas during the autumn and winter. In contrast, the removal of sea ice (i.e., loss of the insulating layer) likely contributes to a colder sea surface (i.e., decreed SST), as is observed in northern Barents Sea. Decreasing SIC trends can lead to an in-phase enhancement of SAT, while SAT variations seem to have a lagged influence on SIC trends. SW plays an important role in the modulating SIC trends in two ways: by transporting moist and warm air that melts sea ice in peripheral seas (typically evident inthe Barents Sea) and by exporting sea ice out of the Arctic Ocean via passages into the Greenland and Barents Seas, including the Fram Strait, the passage between Svalbard and Franz Josef Land (S-FJL), and the passage between Franz Josef Land and Severnaya Zemlya (FJL-SZ).
Keywordsea ice concentration (SIC) Arctic Ocean surface air temperature (SAT) sea surface temperature (SST) surface wind (SW) interannual and decadal oscillation
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[41406215] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606401] ; Qingdao National Laboratory for Marine Science and Technology ; Postdoctoral Science Foundation of China[2014M561971] ; Open Funds for the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences[MGE2013KG07] ; Natural Science Foundation of Jiangsu Province of China[BK20140186]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000459304100002
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorBi Haibo; Huang Haijun
Affiliation1.Chinese Acad Sci, CAS Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266200, Peoples R China
4.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
5.Natl Marine Environm Forecasting Ctr, Key Lab Res Marine Hazards Forecasting, Beijing 100081, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang Yunhe,Bi Haibo,Huang Haijun,et al. Satellite-observed trends in the Arctic sea ice concentration for the period 1979-2016[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(1):18-37.
APA Wang Yunhe.,Bi Haibo.,Huang Haijun.,Liu Yanxia.,Liu Yilin.,...&Zhang Zehua.(2019).Satellite-observed trends in the Arctic sea ice concentration for the period 1979-2016.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(1),18-37.
MLA Wang Yunhe,et al."Satellite-observed trends in the Arctic sea ice concentration for the period 1979-2016".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.1(2019):18-37.
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