气候变化领域集成服务门户(CCPortal): Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing

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DOI	10.1016/j.atmosenv.2019.117165
	Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing
	Choi Y.-N.; Song S.-K.; Lee S.H.; Moon J.-H.
发表日期	2020
ISSN	1352-2310
卷号	222
英文摘要	This study investigated the impacts of marine dimethyl sulfide (DMS) emitted from East Asian seas on natural direct radiative forcing (DRF) based on a numerical modeling approach. The high-resolution (4 km) DMS emissions (i.e., DMS flux) were estimated from sea surface DMS concentrations and transfer velocity in the air-sea interface using satellite observations and model-predicted data during the period 2014–2016. We inputted these emission data into an aerosol optical model and then estimated the natural DRF of sulfate aerosols derived from the DMS flux (i.e., DMS-derived sulfate) using a radiative transfer model. The total mean DMS flux in the study area during the study period was estimated to be approximately 0.73 μmol/m2/day, with a maximum of 3.4 μmol/m2/day (December 2014) and a minimum of 0.12 μmol/m2/day (March 2014). The total mean negative forcing at the top of the atmosphere (DRFTOA) due to the DMS-derived sulfate was approximately −1.3 W m−2 in the target area during the study period. The monthly maximum (−2.8 W m−2) and minimum DRFTOA (−0.82 W m−2) occurred in December and March 2014, respectively, with the highest and lowest forcing at the surface and in the atmosphere during the same months. In terms of spatial distributions over the entire study area, negative DRFTOA exhibited a maximum of up to −8.8 W m−2 in the coastal sea near Shanghai, China, and a minimum of −0.6 W m−2 in the offshore sea of the East Sea, Korea. These increases and decreases in the natural DRFs were strongly attributed to the DMS fluxes, which were affected mainly by sea surface wind and/or partially by DMS concentrations, and relative humidity conditions in the study region. © 2019 Elsevier Ltd
关键词	DMS flux East Asian seas Natural direct radiative forcing Relative humidity Sea surface wind Seawater DMS concentration
语种	英语
scopus关键词	Aerosols; Air; Atmospheric humidity; Atmospheric radiation; Offshore oil well production; Radiative transfer; Surface waters; Direct radiative forcing; East Asian seas; Humidity conditions; Numerical modeling approach; Radiative transfer model; Satellite observations; Sea surface wind; Top of the atmospheres; Sulfur compounds; dimethyl sulfide; concentration (composition); dimethylsulfide; emission; estimation method; flux measurement; marine environment; radiative forcing; relative humidity; satellite altimetry; sea surface; seawater; aerosol; air; air pollution; atmosphere; China; concentration (parameter); East China Sea; environmental impact; gas diffusion; humidity; mathematical model; priority journal; radiative forcing; satellite imagery; Sea of Japan; sea surface waters; seasonal variation; spatiotemporal analysis; spring; velocity; wind speed; winter; China; Korea; Pacific Ocean; Sea of Japan; Shanghai
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249436
作者单位	Global Environment System Research Division, National Institute of Meteorological Sciences, Jeju-do, 63568, South Korea; Department of Earth and Marine Sciences, Jeju National University, Jeju, 63243, South Korea; Department of Oceanography, Pusan National University, Busan, 46241, South Korea
推荐引用方式 GB/T 7714	Choi Y.-N.,Song S.-K.,Lee S.H.,et al. Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing[J],2020,222.
APA	Choi Y.-N.,Song S.-K.,Lee S.H.,&Moon J.-H..(2020).Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing.ATMOSPHERIC ENVIRONMENT,222.
MLA	Choi Y.-N.,et al."Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing".ATMOSPHERIC ENVIRONMENT 222(2020).