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DOI	10.5194/acp-22-6067-2022
	Zonal variations in the vertical distribution of atmospheric aerosols over the Indian region and the consequent radiative effects
	Kala, Nair K.; Anand, Narayana Sarma; Manoj, Mohanan R.; Pathak, Harshavardhana S.; Moorthy, Krishnaswamy K.; Satheesh, Sreedharan K.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6067
结束页码	6085
卷号	22 期号:9 页码:19
英文摘要	The vertical structure of atmospheric aerosols over the Indian mainland and the surrounding oceans and its spatial distinctiveness and resultant atmospheric heating are characterised using long-term (2007-2020) satellite observations, assimilated aerosol single scattering albedo, and radiative transfer calculations. The results show strong, seasonally varying zonal gradients in the concentration and vertical extent of aerosols over the study region. Compared to the surrounding oceans, where the vertical extent of aerosols is confined within 3 km, the aerosol extinction coefficients extend to considerably higher altitudes over the mainland, reaching as high as 6 km during pre-monsoon and monsoon seasons. Longitudinally, the vertical extent is highest around 75 degrees E and decreasing gradually towards either side of the study region, particularly over peninsular India. Particulate depolarisation ratio profiles affirm the ubiquity of dust aerosols in western India from the surface to nearly 6 km. While the presence of low-altitude dust aerosols decreases further east, the high-altitude (above 4km) dust layers remain aloft throughout the year with seasonal variations in the zonal distribution over north-western India. High-altitude (around 4km) dust aerosols are observed over southern peninsular India and the surrounding oceans during the monsoon season. Radiative transfer calculations show that these changes in the vertical distribution of aerosols result in enhanced atmospheric heating at the lower altitudes during the pre-monsoon, especially in the 2-3 km altitude range throughout the Indian region. These results have strong implications for aerosol-radiation interactions in regional climate simulations.
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:000792364100001
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/273618
作者单位	Indian Institute of Science (IISC) - Bangalore; Indian Institute of Science (IISC) - Bangalore; Indian Institute of Science (IISC) - Bangalore
推荐引用方式 GB/T 7714	Kala, Nair K.,Anand, Narayana Sarma,Manoj, Mohanan R.,et al. Zonal variations in the vertical distribution of atmospheric aerosols over the Indian region and the consequent radiative effects[J],2022,22(9):19.
APA	Kala, Nair K.,Anand, Narayana Sarma,Manoj, Mohanan R.,Pathak, Harshavardhana S.,Moorthy, Krishnaswamy K.,&Satheesh, Sreedharan K..(2022).Zonal variations in the vertical distribution of atmospheric aerosols over the Indian region and the consequent radiative effects.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(9),19.
MLA	Kala, Nair K.,et al."Zonal variations in the vertical distribution of atmospheric aerosols over the Indian region and the consequent radiative effects".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.9(2022):19.