| DOI: | 10.1016/j.atmosenv.2013.12.038
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| Scopus记录号: | 2-s2.0-84893390380
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| 论文题名: | Transport of bacterial cells toward the Pacific in Northern Hemisphere westerly winds |
| 作者: | Murata K; , Zhang D
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2014
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| 卷: | 87 | | 起始页码: | 138
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| 结束页码: | 145
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| 语种: | 英语
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| 英文关键词: | Airborne bacteria
; East Asia
; Epifluorescence microscopy
; Long-range transport
; Weather
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| Scopus关键词: | Airborne bacteria
; Bacterial abundance
; Bacterial viability
; East Asia
; Epifluorescence microscopy
; Long range transport
; Northern Hemispheres
; Southwestern Japan
; Atmospheric pressure
; Storms
; Weathering
; Bacteria
; abundance
; aerosol
; anticyclone
; bacterium
; cold front
; cyclone
; long range transport
; Northern Hemisphere
; thermodynamics
; viability
; westerly
; aerosol
; air
; air sampling
; airborne bacterium
; article
; bacterial cell
; bacterial membrane
; bacterial viability
; humidity
; hurricane
; nonhuman
; Northern Hemisphere
; priority journal
; solar radiation
; thermodynamics
; weather
; wind
; Japan
; Pacific Coast [Japan]
; Pacific Ocean
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | Viable and non-viable bacteria in the air were investigated on the southwestern Japan coast to outline the manner by which bacteria were transported and to quantify the bacterial abundance and viability in the Northern Hemisphere westerly winds. The observations were conducted when the weather was governed by cyclones or anticyclones associated with Asian continent outflow between 12 October 2011 and 7 April 2013. Bacterial concentration in thermodynamically different air parcels was in the same order but different ranges: 4.5×105-1.3×106cellsm-3 in postfrontal air, 2.4×105-1.4×106cellsm-3 in prefrontal air, 5.4×105-9.9×105cellsm-3 in the air between cyclones and anticyclones and 2.9×105-4.1×105cellsm-3 in anticyclone air. In postfrontal air, the concentration correlated closely with coarse aerosol particles (diameter>1.0μm). In contrast, bacteria did not show a correlation with coarse particles in prefrontal air and anticyclone air. Bacterial viability was approximately 70% on average of all samples. However, the viability in postfrontal air was smaller than 60% if cases of stationary fronts with stagnant air were excluded. These results indicate that air parcels following fast-moving cold fronts in the westerly wind flow constantly and efficiently conveyed airborne bacteria from the Asian continent toward northwestern Pacific and the bacteria were characterized by coarse particle-correlated high abundance and low viability. The bacteria in slowly moving anticyclone and prefrontal air, characterized by low abundance and high viability, were more likely a mixture of long-range transported ones and regionally or locally originated ones. © 2014 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/80732
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto 862-8502, Japan
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| Recommended Citation: | |
Murata K,, Zhang D. Transport of bacterial cells toward the Pacific in Northern Hemisphere westerly winds[J]. Atmospheric Environment,2014-01-01,87
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