Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027287 |
Concentration and Viability of Airborne Bacteria Over the Kuroshio Extension Region in the Northwestern Pacific Ocean: Data From Three Cruises | |
Hu, Wei1; Murata, Kotaro1; Fukuyama, Shinichiro1; Kawai, Yoshimi2; Oka, Eitarou3; Uematsu, Mitsuo3; Zhang, Daizhou1 | |
2017-12-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:23 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Airborne bacteria have been shown to act as condensation and ice nuclei in mixed-phase clouds and are consequently hypothesized to have significant effects on atmospheric processes and even the global climate. However, few data are available regarding their concentration and variation in the air over the open ocean. Aerosol samples were collected during three cruises in the early summers of 2013, 2014, and 2016 over the Kuroshio Extension region of the northwest Pacific Ocean. The concentrations of viable and nonviable bacterial cells in the marine surface air were quantified using epifluorescence enumeration with the LIVE/DEAD BacLight stain. The concentrations of total bacteria varied between 1.0x10(4) and 2.5x10(5)cellsm(-3) and averaged 5.2x10(4), 1.0x10(5), and 7.5x10(4)cellsm(-3) in the three respective cruises. The viabilities, i.e., the ratios of the concentration of viable bacterial cells to that of total bacterial cells, ranged from 80% to 100% (average 93%), and the respective means were 93%, 89%, and 96% in the cruises. The total bacterial concentration had a close correlation with the wind speed near the sea surface, and the bacterial viability correlated negatively with the air temperature, sea surface temperature, and concentration of coarse particles (size>1m). The deposition and sea spray fluxes of bacteria were roughly estimated as hundreds of cellsm(-2)s(-1) on average. The limited data on bacterial concentration and viability from the three cruises indicate the rapid air-sea exchange of bacteria over the Kuroshio Extension region of the northwest Pacific Ocean. |
英文关键词 | airborne bacteria concentration viability air-sea flux northwest Pacific |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419396500013 |
WOS关键词 | SEA-SURFACE MICROLAYER ; CENTRAL ARCTIC-OCEAN ; ATMOSPHERIC CHEMISTRY ; SPATIAL VARIABILITY ; BIOGENIC PARTICLES ; AEROSOL PRODUCTION ; ASIAN DUST ; MARINE ; AIR ; ABUNDANCE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33098 |
专题 | 气候变化 |
作者单位 | 1.Prefectural Univ Kumamoto, Fac Environm & Symbiot Sci, Kumamoto, Japan; 2.Japan Agcy Marine Earth Sci & Technol, Res & Dev Ctr Global Change, Yokosuka, Kanagawa, Japan; 3.Univ Tokyo, Atmosphere & Ocean Res Inst, Kashiwa, Chiba, Japan |
推荐引用方式 GB/T 7714 | Hu, Wei,Murata, Kotaro,Fukuyama, Shinichiro,et al. Concentration and Viability of Airborne Bacteria Over the Kuroshio Extension Region in the Northwestern Pacific Ocean: Data From Three Cruises[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(23). |
APA | Hu, Wei.,Murata, Kotaro.,Fukuyama, Shinichiro.,Kawai, Yoshimi.,Oka, Eitarou.,...&Zhang, Daizhou.(2017).Concentration and Viability of Airborne Bacteria Over the Kuroshio Extension Region in the Northwestern Pacific Ocean: Data From Three Cruises.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(23). |
MLA | Hu, Wei,et al."Concentration and Viability of Airborne Bacteria Over the Kuroshio Extension Region in the Northwestern Pacific Ocean: Data From Three Cruises".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.23(2017). |
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