期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 25, 期 19, 页码 18879-18893出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-2034-y
关键词
Crop-residue burning; Ozone; Backward trajectories; Carbon monoxide; MOPITT; OMI
资金
- ISRO GBP under ATCTM project
- ISRO-GBP
In the present study, surface ozone (O-3), nitrogen oxides (NOx), and carbon monoxide (CO) levels were measured at two sites downwind of fire active region in the Indo-Gangetic Plain (IGP): Agra (27.16 degrees N, 78.08 degrees E) and Delhi (28.37 degrees N, 77.12 degrees E) to study the impact of post-harvest crop-residue fires. The study period was classified into two groups: Pre-harvest period and Post-harvest period. During the post-harvest period, an enhancement of 17.3 and 31.7 ppb in hourly averaged O-3 mixing ratios was observed at Agra and Delhi, respectively, under similar meteorological conditions. The rate of change of O-3 was also higher in the post-harvest period by 56.2% in Agra and 39.5% in Delhi. Relatively higher O-3 episodic days were observed in the post-harvest period. Fire hotspots detected by Moderate Resolution Imaging Spectroradiometer (MODIS) along with backward air-mass trajectory analysis suggested that the enhanced O-3 and CO levels at the study sites during the post-harvest period could be attributed to crop-residue burning over the North-West IGP (NW-IGP). Satellite observations of surface CO mixing ratios and tropospheric formaldehyde (HCHO) column also showed higher levels during the post-harvest period.
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