globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-15-0296.1
Scopus记录号: 2-s2.0-84950120829
论文题名:
Air-mass origin in the arctic. Part II: Response to increases in greenhouse gases
作者: Orbe C.; Newman P.A.; Waugh D.W.; Holzer M.; Oman L.D.; Li F.; Polvani L.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期:23
起始页码: 9105
结束页码: 9120
语种: 英语
Scopus关键词: Boundary layers ; Budget control ; Earth (planet) ; Greenhouse gases ; Radioactive tracers ; Arctic ; Chemistry-climate models ; Geographic location ; Goddard earth observing systems ; Northern hemisphere ; Ozone depleting substances ; Planetary boundary layers ; Transport ; Climate models ; air mass ; atmospheric circulation ; atmospheric dynamics ; atmospheric modeling ; atmospheric transport ; climate modeling ; greenhouse gas ; midlatitude environment ; Northern Hemisphere ; tracer ; troposphere ; Arctic
英文摘要: Future changes in transport from Northern Hemisphere (NH) midlatitudes into the Arctic are examined using rigorously defined air-mass fractions that partition air in the Arctic according to where it last had contact with the planetary boundary layer (PBL). Boreal winter (December-February) and summer (June-August) air-mass fraction climatologies are calculated for the modeled climate of the Goddard Earth Observing System Chemistry-Climate Model (GEOSCCM) forced with the end-of-twenty-first century greenhouse gases and ozone-depleting substances. The modeled projections indicate that the fraction of air in the Arctic that last contacted the PBL over NH midlatitudes (or air of "midlatitude origin") will increase by about 10% in both winter and summer. The projected increases during winter are largest in the upper and middle Arctic troposphere, where they reflect an upward and poleward shift in the transient eddy meridional wind, a robust dynamical response among comprehensive climate models. The boreal winter response is dominated by (~5%-10%) increases in the air-mass fractions originating over the eastern Pacific and the Atlantic, while the response in boreal summer mainly reflects (~5%) increases in air of Asian and North American origin. The results herein suggest that future changes in transport from midlatitudes may impact the composition-and, hence, radiative budget-in the Arctic, independent of changes in emissions. © 2015 American Meteorological Society.
资助项目: GSFC, National Science Foundation ; NASA, National Science Foundation ; NSF, National Science Foundation ; NSF, National Science Foundation ; ORAU, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50842
Appears in Collections:气候变化事实与影响

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作者单位: Laboratory for Atmospheric Chemistry and Dynamics, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States; Department of Applied Mathematics, School of Mathematics and Statistics, University of New South Wales, Sydney, New South Wales, Australia; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States

Recommended Citation:
Orbe C.,Newman P.A.,Waugh D.W.,et al. Air-mass origin in the arctic. Part II: Response to increases in greenhouse gases[J]. Journal of Climate,2015-01-01,28(23)
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