Assessment of aerosol optical property and radiative effect for the layer decoupling cases over the northern South China sea during the 7-SEAS/dongsha experiment

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Title:	Assessment of aerosol optical property and radiative effect for the layer decoupling cases over the northern South China sea during the 7-SEAS/dongsha experiment
Authors:	李崇德;Pani, Shantau Kumar;Wang, Sheng-Hsiang;Lin, Neng-Huei;Tsay, Si-Chee;Lolli, Simone;Chuang, Ming-Tung;Lee, Chung-Te;Chantara, Somporn;Yu, Jin-Yi
Contributors:	環境監測技術聯合中心
Keywords:	7‐SEAS;Absorption;Aerosol absorption;Aerosol effects;Aerosol layers;Aerosol optical depth;Aerosol optical properties;aerosol radiative effects;Aerosol transport;aerosol vertical profile;Aerosols;Albedo;Albedo (solar);Assessments;Atmospheric circulation;Atmospheric stability;Biomass;Biomass burning;biomass‐burning aerosols;Burning;Cooling;Decoupling;Distribution;Earth Resources And Remote Sensing;Geophysics;Heating;Hydrologic cycle;Hydrological cycle;Hydrology;Lower atmosphere;Meteorological satellites;Optical analysis;Optical properties;Optical thickness;Radiative transfer;Radiative transfer calculations;South China Sea;Transport;Tropical climate;Troposphere;Vertical distribution;Wavelength
Date:	2016-01-01
Issue Date:	2026-04-23 15:04:05 (UTC+8)
Publisher:	Wiley-Blackwell;Goddard Space Flight Center: American Geophysical Union (AGU)
Abstract:	摘要： AbstractThe aerosol radiative effect can be modulated by the vertical distribution and optical properties of aerosols, particularly when aerosol layers are decoupled. Direct aerosol radiative effects over the northern South China Sea (SCS) were assessed by incorporating an observed data set of aerosol optical properties obtained from the Seven South East Asian Studies (7‐SEAS)/Dongsha Experiment into a radiative transfer model. Aerosol optical properties for a two‐layer structure of aerosol transport were estimated. In the radiative transfer calculations, aerosol variability (i.e., diversity of source region, aerosol type, and vertical distribution) for the complex aerosol environment was also carefully quantified. The column‐integrated aerosol optical depth (AOD) at 500 nm was 0.1–0.3 for near‐surface aerosols and increased 1–5 times in presence of upper layer biomass‐burning aerosols. A case study showed the strong aerosol absorption (single‐scattering albedo (ω) ≈ 0.92 at 440 nm wavelength) exhibited by the upper layer when associated with predominantly biomass‐burning aerosols, and the ω (≈0.95) of near‐surface aerosols was greater than that of the upper layer aerosols because of the presence of mixed type aerosols. The presence of upper level aerosol transport could enhance the radiative efficiency at the surface (i.e., cooling) and lower atmosphere (i.e., heating) by up to −13.7 and +9.6 W m−2 per AOD, respectively. Such enhancement could potentially modify atmospheric stability, can influence atmospheric circulation, as well as the hydrological cycle over the tropical and low‐latitude marginal northern SCS. 出版者： Goddard Space Flight Center: American Geophysical Union (AGU) 出版日期： 2016-05-16 出處： Journal of Geophysical Research: Atmospheres, 2016-05, Vol.121 (9), p.4894-4906 資源來源： NASA Technical Reports Server 版權： 2016. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 2169-897X 識別號： ISSN: 2169-8996 識別號： EISSN: 2169-8996 識別號： DOI: 10.1002/2015JD024601
Appears in Collections:	[Center for Environmental Monitoring and Technology] journal & Dissertation

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