DOI: 10.1016/j.atmosenv.2014.10.009
Scopus记录号: 2-s2.0-84908010951
论文题名: Distributions of atmospheric non-sea-salt sulfate and methanesulfonic acid over the Pacific Ocean between 48°N and 55°S during summer
作者: Jung J ; , Furutani H ; , Uematsu M ; , Park J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99 起始页码: 374
结束页码: 384
语种: 英语
英文关键词: Marine aerosols
; Methanesulfonic acid
; Methanesulfonic acid to non-sea-salt sulfate ratio
; Non-sea-salt sulfate
; North and South Pacific
Scopus关键词: Marine aerosols
; Methane sulfonic acid
; Non-sea-salt sulfate
; North and South Pacific
; Sulfate ratio
; chlorophyll
; chlorophyll a
; mesylic acid
; non sea salt sulfate
; sulfate
; unclassified drug
; aerosol composition
; air temperature
; atmospheric chemistry
; biogenic emission
; biological production
; chlorophyll a
; concentration (composition)
; latitudinal gradient
; marine atmosphere
; organic acid
; spatial distribution
; sulfate (ester)
; summer
; aerosol
; air sampling
; air temperature
; Article
; atmospheric deposition
; atmospheric dispersion
; concentration (parameters)
; latitude
; low temperature
; oceanic regions
; Pacific Ocean
; particle size
; productivity
; seasonal variation
; spatial analysis
; summer
; volcano
; Pacific Ocean
; Pacific Ocean (North)
; Pacific Ocean (South)
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Atmospheric concentrations of non-sea-salt sulfate (nss-SO42-) and methanesulfonic acid (MSA) were measured over the Pacific Ocean between 48°N and 55°S during the KH-08-2 and MR08-06 cruises in summers of 2008 and 2009, in order to investigate spatial distributions of each species and MSA/nss-SO42- ratio. In the subarctic western North Pacific, mean concentrations of nss-SO42- and MSA in bulk (fine+coarse) aerosols were 1.1μgm-3 and 0.061μgm-3, whereas those in the South Pacific were 0.25μgm-3 and 0.043μgm-3, respectively. In the subtropical western North Pacific, it was observed that nss-SO42- concentration sharply increased from 0.45μgm-3 up to 4.2μgm-3 under the dominant influence of the Kilauea volcano, while that of MSA remained low. Mean MSA/nss-SO42- ratio observed in the South Pacific was approximately 3.7 times higher than that in the subarctic western North Pacific, although the mean MSA concentration in the subarctic western North Pacific was a factor of 1.4 higher than that in the South Pacific. The distributions of nss-SO42-, MSA, and MSA/nss-SO42- ratio suggested that aerosol nss-SO42- plays a key role in the latitudinal variation in MSA/nss-SO42- ratio over the North and South Pacific during summer periods, and that high MSA concentrations in the subarctic western North Pacific and the South Pacific were related to high biological productivity and low air temperature. During the cruises, an inverse relationship (r=-0.72, p<0.01) was observed between satellite-derived chlorophyll a concentration and air temperature, showing that high biological productivity occurred at high latitudes, where air temperature were relatively low, in both hemispheres during the summer periods. Although both MSA concentration and MSA/nss-SO42- ratio showed inverse and positive relationships with air temperature and chlorophyll a concentration, respectively, the correlations between these variables were weak, suggesting that the distributions of MSA concentration and MSA/nss-SO42- ratio over the North and South Pacific during the summer periods were influenced by more complex factors. Estimates using the MSA/nss-SO42- ratios measured in different latitude regions in the Pacific Ocean indicated that the contributions from biogenic sources accounted for 9.6-58% of the total nss-SO42- in aerosols collected in the subarctic western North Pacific, 15-85% in the subtropical western North Pacific, 10-70% in the central North Pacific, and 12-97% in the South Pacific, showing strong influence of anthropogenic nss-SO42- in the subarctic western North Pacific despite the higher mean concentration of MSA in the subarctic western North Pacific than in the South Pacific. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80501
Appears in Collections: 气候变化事实与影响
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作者单位: Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, Japan; Korea Polar Research Institute, 26, Songdomirae-ro, Yeonsu-gu, Incheon, South Korea
Recommended Citation:
Jung J,, Furutani H,, Uematsu M,et al. Distributions of atmospheric non-sea-salt sulfate and methanesulfonic acid over the Pacific Ocean between 48°N and 55°S during summer[J]. Atmospheric Environment,2014-01-01,99