气候变化领域集成服务门户(CCPortal): Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields

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DOI	10.1029/2020JD033554
	Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields
	Banerjee T.; Shitole A.S.; Mhawish A.; Anand A.; Ranjan R.; Khan M.F.; Srithawirat T.; Latif M.T.; Mall R.K.
发表日期	2021
ISSN	2169897X
卷号	126 期号:6
英文摘要	Aerosol climatology during typical haze dominating period over South and Southeast Asia was explored using several Earth-Observing A-Train satellite products retrieved in between 2010 and 2020. Comparatively high aerosol optical depth (AOD) with dominance of fine and UV-absorbing aerosols are noted across the Indo-Gangetic plain, South Asia (IGP; AOD: 0.58; UVAI: 0.74) against weak UV-absorbing fine aerosols over Southeast Asia (SEA; AOD: 0.26; UVAI: 0.07). Among inland IGP sites, decadal mean AOD resembles in Lahore (0.72 ± 0.45), Delhi (0.81 ± 0.46), Kanpur (0.84 ± 0.42), and Varanasi (0.78 ± 0.45); all exhibiting bimodal AOD distribution with a first peak in early November followed by a second in early January. In contrast, except mainland site Chiang Mai, all SEA maritime cities resemble in having typical September-October AOD peak, with the presence of fine and UV-neutral aerosols. Urban hotspots across IGP and SEA (except Dhaka, Chiang Mai) denote a spatially consistent minor increasing trend in AOD (0.2–1.8 × 10−2 year−1) while increase in UVAI is more prominent over upper IGP. Dust aerosols dominate only in Karachi (46%) against strong UV-absorbing smoke aerosols over rest of the IGP (71–91%), and UV-neutral smoke aerosols across SEA (84–92%). Vertical stratification of aerosol types is noted across IGP as in lower atmosphere (<4 km) polluted dust/urban aerosols remain abundant, with gradual decrease in dust aerosols from upper to lower IGP and consequent increase in smoke aerosols. At upper atmosphere (>4 km), however, dust aerosols clearly dominate. Over SEA, smoke are the most abundant aerosols across the atmospheric column followed by polluted dust. No evidence of intracontinental transport of aerosols from IGP to Southeast Asia or vice versa is, however, noted. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol type; biomass burning; CALIPSO; haze; smoke aerosols
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185396
作者单位	Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India; DST-Mahamana Centre of Excellence in Climate Change Research, Banaras Hindu University, Varanasi, India; Department of Botany, Banaras Hindu University, Varanasi, India; Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Department of Environmental Science, Pibulsongkram Rajabhat University, Phitsanulok, Thailand; Department of Earth Sciences and Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
推荐引用方式 GB/T 7714	Banerjee T.,Shitole A.S.,Mhawish A.,et al. Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields[J],2021,126(6).
APA	Banerjee T..,Shitole A.S..,Mhawish A..,Anand A..,Ranjan R..,...&Mall R.K..(2021).Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields.Journal of Geophysical Research: Atmospheres,126(6).
MLA	Banerjee T.,et al."Aerosol Climatology Over South and Southeast Asia: Aerosol Types, Vertical Profile, and Source Fields".Journal of Geophysical Research: Atmospheres 126.6(2021).