IOCAS-IR  > 海洋地质与环境重点实验室
Baffin Bay sea ice inflow and outflow: 1978-1979 to 2016-2017
Bi, Haibo1,2,3; Zhang, Zehua1,2,3; Wang, Yunhe1,2,4; Xu, Xiuli1,2,3; Liang, Yu1,2,4; Huang, Jue5; Liu, Yilin5; Fu, Min6
2019-03-29
Source PublicationCRYOSPHERE
ISSN1994-0416
Volume13Issue:3Pages:1025-1042
Corresponding AuthorBi, Haibo(bhb@qdio.ac.cn)
AbstractBaffin Bay serves as a huge reservoir of sea ice which would provide the solid freshwater sources to the seas downstream. By employing satellite-derived sea ice motion and concentration fields, we obtain a nearly 40-year-long record (1978-1979 to 2016-2017) of the sea ice area flux through key fluxgates of Baffin Bay. Based on the estimates, the Baffin Bay sea ice area budget in terms of inflow and outflow are quantified and possible causes for its interannual variations and trends are analyzed. On average, the annual (September-August) inflows through the northern gate and Lancaster Sound are on the order of 205.8(+/- 74.7) x 10(3) km(2) and 55.2(+/- 17.8) x 10(3) km(2). In particular, a comparison with published results seems to suggest that about 75 %-85 % of the inflow through the northern gates is newly formed ice produced in the recurring North Water Polynya (NOW), in addition to the inflow via Nares Strait and Jones Sound. Meanwhile, the mean outflow via the southern gate approaches 394.3(+/- 110.2) x 10(3) km(2). The distinct interannual variability for ice area flux through the northern gate and southern gate is partly explained by wind forcing associated with cross-gate sea level pressure difference, with correlations of 0.62 and 0.68, respectively. Also, significant increasing trends are found for the annual sea ice area flux through the three gates, amounting to 38.9 x 10(3), 82.2 x 10(3), and 7.5 x 10(3) km(2) decade(-1) for the northern gate, southern gate, and Lancaster Sound. These trends are chiefly related to the increasing ice motion, which is associated with thinner ice owing to the warmer climate (i.e., higher surface air temperature and shortened freezing period) and increased air and water drag coefficients over the past decades.
DOI10.5194/tc-13-1025-2019
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41406215] ; National Natural Science Foundation of China[41706194] ; Qingdao National Laboratory for Marine Science and Technology ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606401]
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000462870100002
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/154923
Collection海洋地质与环境重点实验室
Corresponding AuthorBi, Haibo
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Shandong, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Shandong Univ Sci & Technol, Qingdao, Shandong, Peoples R China
6.Natl Marine Environm Forecasting Ctr, Key Lab Res Marine Hazard Forecasting Ctr, Beijing, 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
Bi, Haibo,Zhang, Zehua,Wang, Yunhe,et al. Baffin Bay sea ice inflow and outflow: 1978-1979 to 2016-2017[J]. CRYOSPHERE,2019,13(3):1025-1042.
APA Bi, Haibo.,Zhang, Zehua.,Wang, Yunhe.,Xu, Xiuli.,Liang, Yu.,...&Fu, Min.(2019).Baffin Bay sea ice inflow and outflow: 1978-1979 to 2016-2017.CRYOSPHERE,13(3),1025-1042.
MLA Bi, Haibo,et al."Baffin Bay sea ice inflow and outflow: 1978-1979 to 2016-2017".CRYOSPHERE 13.3(2019):1025-1042.
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