Authors:
Nasru Minallah,M. Nouman Khan,Waleed khan,Khurram Shahzad,SozanSulaiman Maghdid,Sheeraz Ahmed,DOI NO:
https://doi.org/10.26782/jmcms.2020.08.00050Keywords:
Earth,Atmosphere,Urban Pollution,NO4,Google Earth Engine,Sentinel 5P,Omi,Abstract
Life on the Earth exists because of atmosphere that surrounds it. As with the passage of time population increases and with this increases anthropogenic activities increases which is adversely affecting our atmosphere. That is why temperature of cities is soaring up. As our atmosphere is occupied by different gases, whose increase or decrease can substantially affects our environment. The major air pollutants, due to human activities, are carbon monoxide ), carbon dioxide ( ), nitrogen dioxide ( ), ozone ( ), sulfur dioxide ( ) and particulate matter ( ).Among these pollutants, plays a big role as it can be produced due to road traffic and combustion of fossil fuels. In this paper, we investigated in Pakistan troposphere through Sentinel-5 Precursor (S5-P) satellite. Data from the S5-P, with TROPO phosphoric Monitoring Instrument (TROPOMI) as payload, became available in July 2018, having spatial resolution nine times higher than that of OMI. S5-P launched by European Space Agency(ESA) with one-day revisit cycle, has the capability to sense all atmospheric gases. Our area of study is Pakistan. We processed S5-P datasets in Google Earth Engine(GEE) and produced results of four seasons, during 2018-2019, of . Different regions of Pakistan, which have excess in its troposphere, are also shown. This increase is supported by the fact that with time the increase in urban population causes dramatic negative effects on the atmosphere. Compared to traditional methods, this study will substantially increase the capability of the government and policy makers to take timely action on anthropogenic activities in mentioned cities, in order to mitigate emission of . Our findings illustrate the decrease of in summer, and surges in autumn and vice versa. In autumn Karachi, Sheikhupura, Raiwind, Lahore, Jamber, Faisalabad and Rawalpindi have highest concentration of . In winter excess spots over Karachi, Sheikhupura, Lahore, Raiwind, Jamber and Rawalpindi are detected. After winter, spring season shows further decrease in concentration in which Karachi, Dera Ghazi Khan Sheikhupura, Rawalpindi and Lahore have highest concentration and in summer in Pakistan troposphere is further reduced to Sheikhupura, Raiwind and Jamber cities.Refference:
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