期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 740, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.139986
关键词
Ammonia; Particulate matter; Climate change; Agriculture; Aerosols; IASI; India
资金
- Indian Institute of Technology Kharagpur
- Ministry of Human Resource Development
- Department of Science and Technology (DST/SPLICE)
- Naval Research Board (OEP)
- Defense Research Development Organization
- National Centre for Ocean Information Services Hyderabad
- Ministry of Earth Science (MoES)
- Indian Institute of Tropical Meteorology PunelMoES
- CNES
- Centre National de la Recherche Scientifique (CNRS)
- IASI-Flow Prodex arrangement (ESA-BELSPO)
- F.R.S.-FNRS
Atmospheric ammonia (NH3) is an alkaline gas and a prominent constituent of the nitrogen cycle that adversely affects ecosystems at higher concentrations. It is a pollutant, which influences all three spheres such as haze formation in the atmosphere, soil acidification in the lithosphere, and eutrophication in water bodies. Atmospheric NH3 reacts with sulfur (SOx) and nitrogen (NOx) oxides to form aerosols, which eventually affect human health and climate. Here, we present the seasonal and inter-annual variability of atmospheric NH3 over India in 2008-2016 using the IASI (Infrared Atmospheric Sounding Interferometer) satellite observations. We find that Indo-Gangetic Plains (IGP) is one of the largest and rapidly growing NH3 hotspots of the world, with a growth rate of +12% yr(-1) in summer (June-August: Kharif season), due to intense agricultural activities and presence of many fertilizer industries there. However, our analyses show insignificant decreasing trends in annual NH3 of about -0.8% yr(-1) in all India. about -0.4% yr(-1) in IGP, and -1.0% yr(-1) in the rest of India. Ammonia is positively correlated with total fertilizer consumption (r = 0.75) and temperature (r = 0.5) since high temperature favors volatilization, and is anti-correlated with total precipitation (r = from -0.2, but -0.8 in the Rabi season: October-February) as wet deposition helps removal of atmospheric NH3. This study, henceforth, suggests the need for better fertilization practices and viable strategies to curb emissions, to alleviate the adverse health effects and negative impacts on the ecosystem in the region. On the other hand, the overall decreasing trend in atmospheric NH3 over India shows the positive actions, and commitment to the national missions and action plans to reduce atmospheric pollution and changes in climate. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据