The aim of this work was to analyze the changes in the emissions from the transport sector during the COVID-19 lockdown in Colombia We compared estimated emissions from road transportation of four groups of pollutants, namely, greenhouse gases (CO2, CH4, N2O), ozone precursor gases (CO, NMVOC, NOx), aerosols (BC, PM2 5, PM10), and acidifying gases (NH3, SO2), during the first half of 2020 with values obtained in the same period of 2018 The estimate of emissions from road transportation was determined using a standardized methodology consistent with the 2006 Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas Inventories and the European Environment Agency/European Monitoring and Evaluation Program We found a substantial reduction in GHG emissions for CH4, N2O, and CO2 by 17%, 21%, and 28%, respectively The ozone precursors CO and NMVOC presented a decrease of 21% and 22%, respectively, while NOx emissions were reduced up to 15% for the study period In addition, BC decreased 15%, and there was a reduction of 17% for both PM10 and PM2 5 emissions Finally, acidifying gases presented negative variations of 19% for SO2 and 23% for NH3 emissions Furthermore, these results were consistent with the Ozone Monitoring Instrument (OMI) satellite observations and measurements at air quality stations Our results suggest that the largest decreases were due to the reduction in the burning of gasoline and diesel oil from the transport sector during the COVID-19 lockdown These results can serve decision mak...
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Climate change Research Articles published between May 09, 2022 to May 15, 2022
May 16, 2022
Articles Included: 2
Introduction: Climate change is a pervasive threat to global biodiversity and is expected to have profound effects on the resilience and abundance of ...Read More