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	Long Term Variation in Precipitation Acidity over the Indian Global Atmosphere Watch (GAW) Stations
	Soni, V. K.; Sarkar, Jayanta
通讯作者	Soni, VK
来源期刊	ASIAN JOURNAL OF WATER ENVIRONMENT AND POLLUTION
ISSN	0972-9860
EISSN	1875-8568
出版年	2006
卷号	3 期号:2 页码:35-41
英文摘要	Acidic precipitation is a serious environmental hazard because of its capability of damaging environment worldwide. In this paper monthly variation and long term trend in pH, SO4-2 and NO3- have been studied over a network of ten Global Atmosphere Watch (GAW) stations in India for the period from 1981 to 2002. The analyses reveal that at Jodhpur and Allahabad precipitation is predominantly alkaline due to the influence of soil originated components derived from the Thar Desert and their transportation to these locations. Higher SO42 and NO3 concentrations in precipitation at Visakhapatnam and Nagpur in most of the months in a year can be attributed to industrial and vehicular pollution. Higher concentrations of calcium, magnesium and potassium at Minicoy (Arabian Sea Island) cause its pH to be alkaline, whereas relatively lower concentrations of these basic cations at Portblair (Bay of Bengal Island) make its pH in the acidic range. During the period of 1981-2002, significant shift in pH towards the acidic range and increasing trend in sulphate and nitrate concentrations have been observed at most of the GAW stations. Further, decadal variations revealed drop in pH and substantial rise in sulphate and nitrate concentrations in 1991-2000 decade as compared to that in 1981-1990 decade at majority of the Indian GAW stations.
英文关键词	Acidic precipitation pH sulphate nitrate global atmosphere watch (GAW)
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000211139600006
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328738
作者单位	[Soni, V. K.; Sarkar, Jayanta] Indian Meteorol Dept, Air Pollut Unit, Pune 411005, Maharashtra, India
推荐引用方式 GB/T 7714	Soni, V. K.,Sarkar, Jayanta. Long Term Variation in Precipitation Acidity over the Indian Global Atmosphere Watch (GAW) Stations[J],2006,3(2):35-41.
APA	Soni, V. K.,&Sarkar, Jayanta.(2006).Long Term Variation in Precipitation Acidity over the Indian Global Atmosphere Watch (GAW) Stations.ASIAN JOURNAL OF WATER ENVIRONMENT AND POLLUTION,3(2),35-41.
MLA	Soni, V. K.,et al."Long Term Variation in Precipitation Acidity over the Indian Global Atmosphere Watch (GAW) Stations".ASIAN JOURNAL OF WATER ENVIRONMENT AND POLLUTION 3.2(2006):35-41.