| Autor: |
C.H. Oviedo Sanabria, G.A. Carrillo Soto, D. Becerra Moreno, J.P. Rojas Suárez, C. Y. Mendoza Mendoza |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
RASAYAN Journal of Chemistry. 15:2118-2122 |
| ISSN: |
0976-0083 |
| DOI: |
10.31788/rjc.2021.1536716 |
| Popis: |
This study analyses air quality behavior by considering nitrogen dioxide (NO2) as a reference parameter during atypical conditions associated with the COVID-19 pandemic. NO2 concentrations in 31 departmental capital cities of Colombia (South America) were evaluated during four periods according to government dispositions to face the pandemic: (I) before isolation (normal conditions), (II) mandatory isolation (significant traffic and industrial activity reduction), (III) intelligent isolation (return of some commercial activities), and (IV) selective isolation (Increase of authorized commercial activities). A good fit between ground data and satellite information is observed. Results indicate that most of the cities (45%) present a counterintuitive behavior with concentration increments for Period II with respect to Period I. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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