DOI: 10.1016/j.atmosenv.2019.117165
论文题名: Estimation of marine dimethyl sulfide emissions from East Asian seas and their impact on natural direct radiative forcing
作者: Choi Y.-N. ; Song S.-K. ; Lee S.H. ; Moon J.-H.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 222 语种: 英语
英文关键词: 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
学科: DMS flux
; East Asian seas
; Natural direct radiative forcing
; Relative humidity
; Sea surface wind
; Seawater DMS concentration
中文摘要: 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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160605
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Atmospheric Environment,2020-01-01,222