气候变化领域集成服务门户(CCPortal): The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean

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DOI	10.1016/j.atmosres.2021.105906
	The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean
	Qi J.; Yin Y.; Zhang D.; Li H.; Dong L.
发表日期	2022
ISSN	0169-8095
卷号	265
英文摘要	The concentration and flux of biological aerosol particles over oceans are important for understanding the ecological implications of airborne microbes in marine ecosystems. Airborne microbes over oceans remain uncharacterized, especially the difference between those over the marginal seas and those over the open oceans. Atmospheric aerosol samples were collected over Qingdao (QD), the Yellow and Bohai Seas (YBS) and the Northwest Pacific Ocean (NWPO) during three cruises in the spring of 2014 and 2016. The total airborne microbes (TAM) in the samples were assessed based on microscope counts. The TAM concentration was (4.07 ± 1.42) × 105 cells·m−3 and (2.75 ± 0.91) × 105 cells·m−3 over the NWPO in 2014 and 2016, respectively, significantly lower than that over QD ((8.02 ± 4.04) × 105 cells·m−3 and (14.04 ± 23.95) × 105 cells·m−3 in 2014 and 2016, respectively) due to the continental source of microbes, but the TAM concentration over the NWPO in 2014 was significantly higher than that over the YBS (p < 0.01). The microbe concentration over the NWPO was affected by wind speed and direction, the horizontal offshore distance and the ratio of the distance over the sea to the total transport distance (RS), but the microbe concentration over the YBS was affected by air temperature, NO, NO2, the distance over the sea, the horizontal offshore distance and RS. Compared with those in the marine samples, the TAM in coastal samples was affected by many factors, such as air temperature, relative humidity, atmospheric pressure, PM2.5, PM10, SO2 and O3. A dust event significantly increased the concentration of TAM by a factor of 1.6–49 and changed the size distribution of TAM in the samples. The dry deposition flux of TAM was 8.83 × 107–5.12 × 108 cells·m−2·d−1 over the NWPO, close to the flux of 1.20 × 108–2.63 × 108 cells·m−2·d−1 over the YBS. Our results suggest that airborne microbes are input to the ocean via atmospheric deposition, which may have important impacts on marine ecosystems. © 2021 Elsevier B.V.
英文关键词	Aerosols; Flux; Microbes; Ocean; Size distribution
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236519
作者单位	Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266100, China; Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto, Japan
推荐引用方式 GB/T 7714	Qi J.,Yin Y.,Zhang D.,et al. The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean[J],2022,265.
APA	Qi J.,Yin Y.,Zhang D.,Li H.,&Dong L..(2022).The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean.Atmospheric Research,265.
MLA	Qi J.,et al."The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean".Atmospheric Research 265(2022).