DOI: 10.1002/jgrd.50129
论文题名: Climate-induced changes in sea salt aerosol number emissions: 1870 to 2100
作者: Struthers H. ; Ekman A.M.L. ; Glantz P. ; Iversen T. ; Kirkevåg A. ; Seland O. ; Mårtensson E.M. ; Noone K. ; Nilsson E.D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 670
结束页码: 682
语种: 英语
Scopus关键词: Climate models
; Anthropogenic aerosols
; Coarse mode particles
; Global climate model
; Marine stratocumulus clouds
; Radiative properties
; Regional differences
; Sea surface temperature (SST)
; Surface wind speed
; Aerosols
; aerosol composition
; climate change
; climate feedback
; climate modeling
; global climate
; optical depth
; parameterization
; sea salt
; sea surface temperature
; stratocumulus
; surface wind
; temporal analysis
; twenty first century
英文摘要: Global climate model output is combined with an emission parameterization to estimate the change in the global and regional sea salt aerosol number emission from 1870 to 2100. Global average results suggest a general increase in sea salt aerosol number emission due to increasing surface wind speed. However, the emission changes are not uniform over the aerosol size spectrum due to an increase in sea surface temperature. From 1870 to 2100 the emission of coarse mode particles (dry diameter DP>655 nm) increase by approximately 10 % (global average), whereas no significant change in the emission of ultrafine mode aerosols (dry diameter Dp<76 nm) was found over the same period. Significant regional differences in the number emission trends were also found. Based on CAM-Oslo global climate model output, no straight-forward relationship was found between the change in the number emissions and changes in the sea salt aerosol burden or optical thickness. This is attributed to a change in the simulated residence time of the sea salt aerosol. For the 21st century, a decrease in the residence time leads to a weaker sea salt aerosol-climate feedback that what would be inferred based on changes in number emissions alone. Finally, quantifying any potential impact on marine stratocumulus cloud microphysical and radiative properties due to changes in sea salt aerosol number emissions is likely to be complicated by commensurate changes in anthropogenic aerosol emissions and changes in meteorology. © 2012. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64003
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: Department of Applied Environmental Science, Stockholm University, Stockholm, Sweden; Department of Meteorology, Stockholm University, Stockholm, Sweden; Bert Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Norwegian Meteorological Institute, Oslo, Norway; Department of Geosciences, Oslo University, Oslo, Norway; Department of Earth Sciences, Uppsala University, Uppsala, Sweden
Recommended Citation:
Struthers H.,Ekman A.M.L.,Glantz P.,et al. Climate-induced changes in sea salt aerosol number emissions: 1870 to 2100[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)