气候变化领域集成服务门户(CCPortal): Simultaneous retrievals of biomass burning aerosols and trace gases from the ultraviolet to near-infrared over northern Thailand during the 2019 pre-monsoon season

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DOI	10.5194/acp-22-11957-2022
	Simultaneous retrievals of biomass burning aerosols and trace gases from the ultraviolet to near-infrared over northern Thailand during the 2019 pre-monsoon season
	Jeong, Ukkyo; Tsay, Si-Chee; Hsu, N. Christina; Giles, David M.; Cooper, John W.; Lee, Jaehwa; Swap, Robert J.; Holben, Brent N.; Butler, James J.; Wang, Sheng-Hsiang; Chantara, Somporn; Hong, Hyunkee; Kim, Donghee; Kim, Jhoon
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	11957
结束页码	11986
卷号	22 期号:18 页码:30
英文摘要	With the advent of spaceborne spectroradiometers in a geostationary constellation, measuring high spectral resolution ultraviolet-visible (UV-VIS) and selected near-/shortwave-infrared (NIR/SWIR) radiances can enable the probing of the life cycle of key atmospheric trace gases and aerosols at higher temporal resolutions over the globe. The UV-VIS measurements are important for retrieving several key trace gases (e.g., O-3, SO2, NO2, and HCHO) and particularly for deriving aerosol characteristics (e.g., aerosol absorption and vertical profile). This study examines the merit of simultaneous retrievals of trace gases and aerosols using a ground-based spectroradiometer covering the UV-NIR to monitor their physicochemical processes and to obtain reliable aerosol information for various applications. During the 2019 pre-monsoon season over northern Thailand, we deployed a ground-based SMART-s (Spectral Measurements for Atmospheric Radiative Transfer-spectroradiometer) instrument, which is an extended-range Pandora with reliable radiometric calibration in the 330-820 nm range, to retrieve remotely sensed chemical and aerosol properties for the first time near biomass burning sources. The high spectral resolution (similar to 1.0 nm full width half maximum with similar to 3.7 x oversampling) of sun and sky measurements from SMART-s provides several key trace gases (e.g., O-3, NO2, and H2O) and aerosol properties covering the UV where significant light absorption occurs by the carbonaceous particles. During the measurement period, highly correlated total column amounts of NO2 and aerosol optical thickness (tau(aer)) retrieved from SMART-s (correlation coefficient, R = 0.74) indicated their common emissions from biomass burning events. The SMART-s retrievals of the spectral single scattering albedo (omega(0)) of smoke aerosols showed an abrupt decrease in the UV, which is an important parameter dictating photochemical processes in the atmosphere. The values of omega(0) and column precipitable water vapor (H2O) gradually increase with the mixing of biomass burning smoke particles and higher water vapor concentrations when approaching the monsoon season. The retrieved omega(0) and weighted mean radius of fine-mode aerosols from SMART-s showed positive correlations with the H2O (R = 0.81 for omega(0) at 330 nm and 0.56 for the volume-weighted mean radius), whereas the real part of the refractive index of fine-mode aerosol (n(f)) showed negative correlations (R = 0.61 at 330 nm), which suggest that aerosol aging processes including hygroscopic growth (e.g., humidification and cloud processing) can be a major factor affecting the temporal trends of aerosol optical properties. Retrieved n(f) and omega(0) were closer to those of the water droplet (i.e., n(f) of about 1.33 and omega(0) of about 1.0) under lower amounts of NO2 during the measurement period; considering that the NO2 amounts in the smoke may indicate the aging of the plume after emission due to its short lifetime, the tendency is also consistent with active hygroscopic processes of the aerosols over this area. Retrieved UV aerosol properties from SMART-s generally support the assumed smoke aerosol models (i.e. , the spectral shape of aerosol absorption) used in NASA's current satellite algorithms, and their spectral omega(0) retrievals from ground and satellites showed good agreements (R = 0.73-0.79). However, temporal and spectral variabilities in the aerosol absorption properties in the UV emphasize the importance of a realistic optical model of aerosols for further improvements in satellite retrievals.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000854103600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273326
作者单位	Pukyong National University; National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Science Systems and Applications Inc; University System of Maryland; University of Maryland College Park; National Central University; Chiang Mai University; National Institute of Environmental Research (NIER), Republic of Korea; Yonsei University
推荐引用方式 GB/T 7714	Jeong, Ukkyo,Tsay, Si-Chee,Hsu, N. Christina,et al. Simultaneous retrievals of biomass burning aerosols and trace gases from the ultraviolet to near-infrared over northern Thailand during the 2019 pre-monsoon season[J],2022,22(18):30.
APA	Jeong, Ukkyo.,Tsay, Si-Chee.,Hsu, N. Christina.,Giles, David M..,Cooper, John W..,...&Kim, Jhoon.(2022).Simultaneous retrievals of biomass burning aerosols and trace gases from the ultraviolet to near-infrared over northern Thailand during the 2019 pre-monsoon season.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),30.
MLA	Jeong, Ukkyo,et al."Simultaneous retrievals of biomass burning aerosols and trace gases from the ultraviolet to near-infrared over northern Thailand during the 2019 pre-monsoon season".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):30.