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DOI	10.1088/1748-9326/ac3530
	Aerosol-modulated heat stress in the present and future climate of India
	Dey, Sagnik; Choudhary, Rohit Kumar; Upadhyay, Abhishek; Dash, S. K.
通讯作者	Dey, S (corresponding author), Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi, India. ; Dey, S (corresponding author), Indian Inst Technol Delhi, Ctr Excellence Res Clean Air, New Delhi, India.
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2021
卷号	16 期号:12
英文摘要	Heat stress is one of the leading natural causes of mortality in India. Aerosols can potentially impact heat stress by modulating the meteorological conditions via radiative feedback. However, a quantitative understanding of such an impact is lacking. Here, using a chemical transport model, Weather Research Forecasting model coupled with chemistry, we show that high aerosol loading in India was able to mask the heat stress (quantified by the wet bulb globe temperature (WBGT)) by 0.3 degrees C-1.5 degrees C in 2010 with a regional heterogeneity across the major climate zones in India. However, the cooling effect of aerosol direct radiative forcing is partially compensated by an increase in humidity. To understand the potential impact of air quality improvement (i.e. reducing aerosol load) on heat stress in the future, WBGT was projected for 2030 under two contrasting aerosol emission pathways. We found that heat stress would increase by >0.75 degrees C in all the climate zones in India except in the montane zone under the RCP4.5 scenario with a bigger margin of increase in the mitigation emission pathway relative to the baseline emission pathway. On the contrary, under the RCP8.5 scenario, heat stress is projected to increase in limited regions, such as the tropical wet and dry, north-eastern part of the humid sub-tropical, tropical wet, and semi-arid climate zone in peninsular India. Our results demonstrate that aerosols modulate heat stress and, therefore, the heat stress projections in India and anywhere else with high aerosol loading should consider aerosol radiative feedback.
英文关键词	heat stress comfort class aerosols emission pathway climate change India
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000721061900001
WOS关键词	TEMPERATURE ; MORTALITY ; EXTREMES ; IMPACT ; WAVES
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374078
作者单位	[Dey, Sagnik; Choudhary, Rohit Kumar; Upadhyay, Abhishek; Dash, S. K.] Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi, India; [Dey, Sagnik] Indian Inst Technol Delhi, Ctr Excellence Res Clean Air, New Delhi, India
推荐引用方式 GB/T 7714	Dey, Sagnik,Choudhary, Rohit Kumar,Upadhyay, Abhishek,et al. Aerosol-modulated heat stress in the present and future climate of India[J],2021,16(12).
APA	Dey, Sagnik,Choudhary, Rohit Kumar,Upadhyay, Abhishek,&Dash, S. K..(2021).Aerosol-modulated heat stress in the present and future climate of India.ENVIRONMENTAL RESEARCH LETTERS,16(12).
MLA	Dey, Sagnik,et al."Aerosol-modulated heat stress in the present and future climate of India".ENVIRONMENTAL RESEARCH LETTERS 16.12(2021).