DOI: 10.1002/2014JD022297
论文题名: Using an explicit emission tagging method in global modeling of source-receptor relationships for black carbon in the Arctic: Variations, sources, and transport pathways
作者: Wang H. ; Rasch P.J. ; Easter R.C. ; Singh B. ; Zhang R. ; Ma P.-L. ; Qian Y. ; Ghan S.J. ; Beagley N.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 2169897X
出版年: 2014
卷: 119, 期: 22 起始页码: 12888
结束页码: 12909
语种: 英语
英文关键词: Arctic
; black carbon
; CAM5 model
; radiative forcing
; seasonal variations
; source attribution
Scopus关键词: atmospheric chemistry
; atmospheric deposition
; black carbon
; concentration (composition)
; marine atmosphere
; regional pattern
; seasonal variation
; Arctic Ocean
; Asia
英文摘要: We introduce an explicit emission tagging technique in the Community Atmosphere Model to quantify source-region-resolved characteristics of black carbon (BC), focusing on the Arctic. Explicit tagging of BC source regions without perturbing the emissions provides a physically consistent and computationally efficient approach to establish source-receptor relationships and transport pathways. Our analysis shows that the contributions of major source regions to the global BC burden are not proportional to the respective emissions due to strong region-dependent removal rates and lifetimes, while the contributions to BC direct radiative forcing show a near-linear dependence on their respective contributions to the burden. Arctic BC concentrations, deposition, and source contributions all have strong seasonal variations. Eastern Asia contributes the most to the wintertime Arctic BC burden, but has much less impact on lower-level concentrations and deposition. Northern Europe emissions are more important to both surface concentration and deposition in winter than in summer. The largest contribution to Arctic BC in the summer is from Northern Asia. Although local emissions contribute less than 10% to the annual mean BC burden and deposition within the Arctic, the per-emission efficiency is much higher than for non-Arctic sources. The interannual variability (1996-2005) due to meteorology is small in annual mean BC burden and radiative forcing but is significant in yearly seasonal means over the Arctic. When a slow aging treatment of BC is introduced, the increase of BC lifetime and burden is source dependent. Global BC forcing-per-burden efficiency also increases primarily due to changes in BC vertical distributions. ©2014. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63019
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory (PNNL), Richland, WA, United States; Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, Gansu, China; Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, United States
Recommended Citation:
Wang H.,Rasch P.J.,Easter R.C.,et al. Using an explicit emission tagging method in global modeling of source-receptor relationships for black carbon in the Arctic: Variations, sources, and transport pathways[J]. Journal of Geophysical Research Atmospheres,2014-01-01,119(22)