干旱区生态环境知识资源中心(Arid): Linkage between the absorbing aerosol-induced snow darkening effects over the Himalayas-Tibetan Plateau and the pre-monsoon climate over northern India

Arid

DOI	10.1007/s00704-021-03871-y
	Linkage between the absorbing aerosol-induced snow darkening effects over the Himalayas-Tibetan Plateau and the pre-monsoon climate over northern India
	Das, Sushant; Giorgi, Filippo; Coppola, Erika; Panicker, A. S.; Gautam, A. S.; Nair, Vijayakumar S.; Giuliani, Graziano
通讯作者	Das, S (corresponding author), Abdus Salam Int Ctr Theoret Phys, Earth Syst Phys Sect, Trieste, Italy.
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2022
英文摘要	The role of aerosol on the snow darkening effect is considered one of the main factors contributing to snow melting and glacier retreat over the Himalayas and Tibetan Plateau (HTP). Using the International Centre for Theoretical Physics (ICTP)'s regional climate model, RegCM4, we examine the changes induced by aerosol deposition over the HTP snow and its dynamical impacts over northern India during the pre-monsoon season (March to June), which is critical for the inception and development of the monsoon. Sensitivity experiments with and without aerosol-induced snow darkening effects for the period 2006-2010 reveal that this effect causes a significant reduction of snow cover fraction by 10 to 15% and an increase in surface temperatures (>4 degrees C), which improves the model performance when comparing against observations over the HTP. This response is dominated by dust deposition, which covers a larger area of the HTP compared to the black carbon. While incorporating aerosol-induced snow darkening effect, the precipitation decreases (similar to 0.4-2 mm/day) over northern India due to intrusion of dry winds, which also enhance dust emissions over the Thar Desert. As a result of the decrease in precipitation, surface temperature increases and generates a low-pressure system over northern India, which further strengthens the dust transport and its burden. We also find decreases in precipitation extremes and increases in the number of consecutive dry days and extreme temperature conditions over northern India, implying strong links with changes in pre-monsoon dynamics. The aerosol-induced snow darkening effect thus facilitates an earlier monsoon onset over southern India, but the northward propagation of the precipitation band is limited by the enhanced northwesterly winds over the Indo-Gangetic Plain.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000722832500002
WOS关键词	SUMMER MONSOON RAINFALL ; BLACK CARBON ; REGIONAL CLIMATE ; OPTICAL-PROPERTIES ; DUST TRANSPORT ; AIR-QUALITY ; GRAIN SHAPE ; IMPACTS ; PRECIPITATION ; CLOUD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374635
作者单位	[Das, Sushant; Giorgi, Filippo; Coppola, Erika; Giuliani, Graziano] Abdus Salam Int Ctr Theoret Phys, Earth Syst Phys Sect, Trieste, Italy; [Panicker, A. S.] Indian Inst Trop Meteorol, Pune, Maharashtra, India; [Gautam, A. S.] HNB Garhwal Univ, Srinagar, Uttarakhand, India; [Nair, Vijayakumar S.] ISRO, Space Phys Lab, Vikram Sarabhai Space Ctr, Thiruvananthapuram, Kerala, India
推荐引用方式 GB/T 7714	Das, Sushant,Giorgi, Filippo,Coppola, Erika,et al. Linkage between the absorbing aerosol-induced snow darkening effects over the Himalayas-Tibetan Plateau and the pre-monsoon climate over northern India[J],2022.
APA	Das, Sushant.,Giorgi, Filippo.,Coppola, Erika.,Panicker, A. S..,Gautam, A. S..,...&Giuliani, Graziano.(2022).Linkage between the absorbing aerosol-induced snow darkening effects over the Himalayas-Tibetan Plateau and the pre-monsoon climate over northern India.THEORETICAL AND APPLIED CLIMATOLOGY.
MLA	Das, Sushant,et al."Linkage between the absorbing aerosol-induced snow darkening effects over the Himalayas-Tibetan Plateau and the pre-monsoon climate over northern India".THEORETICAL AND APPLIED CLIMATOLOGY (2022).