globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1806562116
论文题名:
Accelerating changes in ice mass within Greenland; and the ice sheet's sensitivity to atmospheric forcing
作者: Bevis M.; Harig C.; Khan S.A.; Brown A.; Simons F.J.; Willis M.; Fettweis X.; Van Den Broeke M.R.; Madsen F.B.; Kendrick E.; Caccamise D.J.; II; Van Dam T.; Knudsen P.; Nylen T.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期:6
起始页码: 1934
结束页码: 1939
语种: 英语
英文关键词: GNET ; GRACE ; Mass acceleration ; NAO ; SMB
Scopus关键词: article ; body weight ; deceleration ; geography ; global positioning system ; gravity ; Greenland ; ice sheet ; North Atlantic oscillation ; sea level rise ; sunlight ; warming
英文摘要: From early 2003 to mid-2013, the total mass of ice in Greenland declined at a progressively increasing rate. In mid-2013, an abrupt reversal occurred, and very little net ice loss occurred in the next 12-18 months. Gravity Recovery and Climate Experiment (GRACE) and global positioning system (GPS) observations reveal that the spatial patterns of the sustained acceleration and the abrupt deceleration in mass loss are similar. The strongest accelerations tracked the phase of the North Atlantic Oscillation (NAO). The negative phase of the NAO enhances summertime warming and insolation while reducing snowfall, especially in west Greenland, driving surface mass balance (SMB) more negative, as illustrated using the regional climate model MAR. The spatial pattern of accelerating mass changes reflects the geography of NAO-driven shifts in atmospheric forcing and the ice sheet's sensitivity to that forcing. We infer that southwest Greenland will become a major future contributor to sea level rise. © 2019 National Academy of Sciences. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162283
Appears in Collections:气候变化与战略

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作者单位: Bevis, M., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Harig, C., Department of Geosciences, University of Arizona, Tucson, AZ 85721, United States; Khan, S.A., DTU Space, National Space Institute, Danish Technical University, Kongens Lyngby, 2800, Denmark; Brown, A., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Simons, F.J., Department of Geosciences, Princeton University, Princeton, NJ 08544, United States; Willis, M., Department of Geological Sciences, University of Colorado, Boulder, CO 80309, United States; Fettweis, X., Department of Geography, University of Liège, Liège, 4000, Belgium; Van Den Broeke, M.R., Institute for Marine and Atmospheric Research, Utrecht University, TA Utrecht, 3508, Netherlands; Madsen, F.B., DTU Space, National Space Institute, Danish Technical University, Kongens Lyngby, 2800, Denmark; Kendrick, E., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Caccamise, D.J., II, School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Van Dam, T., Faculty of Sciences, University of Luxembourg, Esch-sur-Alzette, L-4365, Luxembourg; Knudsen, P., DTU Space, National Space Institute, Danish Technical University, Kongens Lyngby, 2800, Denmark; Nylen, T., UNAVCO, Inc., Boulder, CO 80301, United States

Recommended Citation:
Bevis M.,Harig C.,Khan S.A.,et al. Accelerating changes in ice mass within Greenland; and the ice sheet's sensitivity to atmospheric forcing[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(6)
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