globalchange  > 影响、适应和脆弱性
DOI: 10.1029/2012JD018148
论文题名:
A multimodel assessment of the influence of regional anthropogenic emission reductions on aerosol direct radiative forcing and the role of intercontinental transport
作者: Yu H.; Chin M.; West J.J.; Atherton C.S.; Bellouin N.; Bergmann D.; Bey I.; Bian H.; Diehl T.; Forberth G.; Hess P.; Schulz M.; Shindell D.; Takemura T.; Tan Q.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:2
起始页码: 700
结束页码: 720
语种: 英语
Scopus关键词: Atmospheric aerosols ; Atmospheric radiation ; Emission control ; Particulate emissions ; Pollution control ; Sulfur dioxide ; Aerosol direct radiative forcing ; Aerosol optical depths ; Anthropogenic emissions ; Chemical transport models ; Direct radiative forcing ; Intercontinental transport ; Northern Hemispheres ; Particulate organic matters ; Atmospheric movements ; anthropogenic source ; assessment method ; atmospheric pollution ; emission ; numerical model ; optical depth ; radiative forcing ; Asia ; Europe ; North America
英文摘要: In this study, we assess changes of aerosol optical depth (AOD) and direct radiative forcing (DRF) in response to the reduction of anthropogenic emissions in four major pollution regions in the Northern Hemisphere by using results from nine global models in the framework of the Hemispheric Transport of Air Pollution (HTAP). DRF at top of atmosphere (TOA) and surface is estimated based on AOD results from the HTAP models and AOD-normalized DRF (NDRF) from a chemical transport model. The multimodel results show that, on average, a 20% reduction of anthropogenic emissions in North America, Europe, East Asia, and South Asia lowers the global mean AOD (all-sky TOA DRF) by 9.2% (9.0%), 3.5% (3.0%), and 9.4% (10.0%) for sulfate, particulate organic matter (POM), and black carbon (BC), respectively. Global annual average TOA all-sky forcing efficiency relative to particle or gaseous precursor emissions from the four regions (expressed as multimodel mean±one standard deviation) is -3.5±0.8, -4.0±1.7, and 29.5±18.1mWm-2 per Tg for sulfate (relative to SO2), POM, and BC, respectively. The impacts of the regional emission reductions on AOD and DRF extend well beyond the source regions because of intercontinental transport (ICT). On an annual basis, ICT accounts for 11±5% to 31±9% of AOD and DRF in a receptor region at continental or subcontinental scale, with domestic emissions accounting for the remainder, depending on regions and species. For sulfate AOD, the largest ICT contribution of 31±9% occurs in South Asia, which is dominated by the emissions from Europe. For BC AOD, the largest ICT contribution of 28±18% occurs in North America, which is dominated by the emissions from East Asia. The large spreads among models highlight the need to improve aerosol processes in models, and evaluate and constrain models with observations. © 2012. American Geophysical Union.
资助项目: DE-AC52-07NA27344 ; NNX11AH66G
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64009
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: Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; National Aeronautics and Space Administration Goddard Space Flight Center, Greenbelt, MD, United States; Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill NC, United States; Gordon and Betty Moore Foundation, Palo Alto, CA, United States; Met Office Hadley Centre, Exeter, Devon, United Kingdom; Lawrence Livermore National Laboratory, Atmospheric Earth and Energy Division, Livermore, CA, United States; Center for Climate Systems Modeling, Eidgenössische Technische Hochschule (ETH) Zurich, Zürich, Switzerland; Joint Center for Earth Systems Technology, University of Maryland at Baltimore County, Baltimore, MD, United States; Universities Space Research Association, Columbia, MD, United States; Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States; Meteorologisk Institutt, Oslo, Norway; National Aeronautics and Space Administration, Goddard Institute for Space Studies, New York, United States; Research Institute for Applied Mechanics, Kyushu University, Fukuoka, Japan

Recommended Citation:
Yu H.,Chin M.,West J.J.,et al. A multimodel assessment of the influence of regional anthropogenic emission reductions on aerosol direct radiative forcing and the role of intercontinental transport[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)
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