Abstract：
Air pollution is growing at alarming rates on regional and global levels, with significant consequences for human health, ecosystems, and change in climatic conditions. The present 12 weeks (4 October 2021, to 26 December 2021) study revealed the different ambient air quality parameters, i.e., PM2.5, PM10, SO2, NO2, and O3 over four different sampling stations of Delhi-NCR region (Dwarka, Knowledge park III, Sector 125, and Vivek Vihar), India, by using satellite remote sensing data (MERRA-2, OMI, and Aura Satellite) and different ground-based instruments. The ground-based observation revealed the mean concentration of PM2.5 in Dwarka, Knowledge park III, Sector 125, and Vivek Vihar as 279 µg m-3, 274 µg m-3, 294 µg m-3, and 365 µg m-3, respectively. The ground-based instrumental concentration of PM2.5 was greater than that of satellite observations, while as for SO2 and NO2, the mean concentration of satellite-based monitoring was higher as compared to other contaminants. Negative and positive correlations were observed among particulate matter, trace gases, and various meteorological parameters. The wind direction proved to be one of the prominent parameter to alter the variation of these pollutants. The current study provides a perception into an observable behavior of particulate matter, trace gases, their variation with meteorological parameters, their health hazards, and the gap between the measurements of satellite remote sensing and ground-based measurements.
摘要：
空气污染在区域和全球范围内以惊人的速度增长，对人类健康有重大影响，生态系统,和气候条件的变化。目前的12周（2021年10月4日至2021年12月26日）研究揭示了不同的环境空气质量参数，即，德里-NCR地区四个不同采样站的PM2.5，PM10，SO2，NO2和O3（Dwarka，知识园III,125区和VivekVihar)，印度,通过使用卫星遥感数据(MERRA-2，OMI，和Aura卫星）和不同的地面仪器。地面观测显示了Dwarka中PM2.5的平均浓度，知识园III,扇区125和VivekVihar分别为279µgm-3、274µgm-3、294µgm-3和365µgm-3。地面仪器PM2.5浓度大于卫星观测值,而对于SO2和NO2，与其他污染物相比，基于卫星的监测的平均浓度更高。颗粒物之间存在负相关和正相关，痕量气体,和各种气象参数。风向被证明是改变这些污染物变化的主要参数之一。当前的研究提供了对颗粒物可观察行为的感知，痕量气体,它们随气象参数的变化，他们的健康危害，以及卫星遥感测量和地面测量之间的差距。
