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DOI | 10.5194/acp-19-5511-2019 |
Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell | |
Yang, Huang1; Waugh, Darryn W.1,2; Orbe, Clara3; Zeng, Guang4; Morgenstern, Olaf4; Kinnison, Douglas E.5; Lamarque, Jean-Francois5; Tilmes, Simone5; Plummer, David A.6; Joeckel, Patrick7; Strahan, Susan E.8,9; Stone, Kane A.10,11,12; Schofield, Robyn10,11 | |
2019-04-26 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:8页码:5511-5528 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Australia; New Zealand; Canada; Germany |
英文摘要 | Transport from the Northern Hemisphere (NH) midlatitudes to the Arctic plays a crucial role in determining the abundance of trace gases and aerosols that are important to Arctic climate via impacts on radiation and chemistry. Here we examine this transport using an idealized tracer with a fixed lifetime and predominantly midlatitude land-based sources in models participating in the Chemistry Climate Model Initiative (CCMI). We show that there is a 25 %-45 % difference in the Arctic concentrations of this tracer among the models. This spread is correlated with the spread in the location of the Pacific jet, as well as the spread in the location of the Hadley Cell (HC) edge, which varies consistently with jet latitude. Our results suggest that it is likely that the HC-related zonal-mean meridional transport rather than the jet-related eddy mixing is the major contributor to the inter-model spread in the transport of land-based tracers into the Arctic. Specifically, in models with a more northern jet, the HC generally extends further north and the tracer source region is mostly covered by surface southward flow associated with the lower branch of the HC, resulting in less efficient transport poleward to the Arctic. During boreal summer, there are poleward biases in jet location in free-running models, and these models likely underestimate the rate of transport into the Arctic. Models using specified dynamics do not have biases in the jet location, but do have biases in the surface meridional flow, which may result in differences in transport into the Arctic. In addition to the landbased tracer, the midlatitude-to-Arctic transport is further examined by another idealized tracer with zonally uniform sources. With equal sources from both land and ocean, the inter-model spread of this zonally uniform tracer is more related to variations in parameterized convection over oceans rather than variations in HC extent, particularly during boreal winter. This suggests that transport of land-based and oceanic tracers or aerosols towards the Arctic differs in pathways and therefore their corresponding inter-model variabilities result from different physical processes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466113900002 |
WOS关键词 | POLLUTION TRANSPORT ; TROPOSPHERIC TRANSPORT ; ATMOSPHERIC TRANSPORT ; MOIST CONVECTION ; AIR-POLLUTION ; PARAMETERIZATION ; AEROSOL ; CIRCULATION ; SENSITIVITY ; VARIABILITY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182455 |
专题 | 地球科学 |
作者单位 | 1.Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA; 2.Univ New South Wales, Sch Math, Sydney, NSW, Australia; 3.NASA, Goddard Inst Space Studies, New York, NY 10025 USA; 4.Natl Inst Water & Atmospher Res, Wellington, New Zealand; 5.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling ACOM Lab, POB 3000, Boulder, CO 80307 USA; 6.Environm & Climate Change Canada, Climate Res Branch, Montreal, PQ, Canada; 7.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Phys Atmosphare, Oberpfaffenhofen, Germany; 8.NASA, Atmospher Chem & Dynam Lab, Goddard Space Flight Ctr, Greenbelt, MD USA; 9.Univ Space Res Assoc, Columbia, MD USA; 10.Univ Melbourne, Sch Earth Sci, Melbourne, Vic 3010, Australia; 11.Univ New South Wales, ARC Ctr Excellence Climate Syst Sci, Sydney, NSW 2052, Australia; 12.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Yang, Huang,Waugh, Darryn W.,Orbe, Clara,et al. Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(8):5511-5528. |
APA | Yang, Huang.,Waugh, Darryn W..,Orbe, Clara.,Zeng, Guang.,Morgenstern, Olaf.,...&Schofield, Robyn.(2019).Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(8),5511-5528. |
MLA | Yang, Huang,et al."Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.8(2019):5511-5528. |
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