Impact of Covid-19 lockdown on PM10, SO2 and NO2 concentrations in Salé City (Morocco)
Copyright © 2020 Elsevier B.V. All rights reserved..
Covid-19 was first reported in Morocco on March 2, 2020. Since then, to prevent its propagation, the Moroccan government declared a state of health emergency. A set of rapid and strict countermeasures have taken, including locking down cities, limiting population's mobility and prohibiting almost all avoidable activities. In the present study, we attempted to evaluate the changes in levels of some air pollutants (mainly PM10, NO2 and SO2) in Salé city (North-Western Morocco) during the lockdown measures. In this context, a continuous measurement of PM10, SO2 and NO2 was carried before and during the Covid-19 lockdown period. As a consequence of the security measures and control actions undertaken, the emissions from vehicle exhaust and industrial production were significantly reduced, which contribute to the decrease in the concentrations of the studied pollutants. The obtained results showed that the difference between the concentrations recorded before and during the lockdown period were respectively 75%, 49% and 96% for PM10, SO2 and NO2. PM10 levels were much less reduced than NO2. The three-dimensional air mass backward trajectories, using the HYSPLIT model, demonstrated the benefits of PM10 local emission reductions related to the lockdown were overwhelmed by the contribution of long-range transported aerosols outside areas. In addition, noteworthy differences in the air mass back trajectories and the meteorology between these two periods were evidenced.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:735 |
|---|---|
| Enthalten in: |
The Science of the total environment - 735(2020) vom: 15. Sept., Seite 139541 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Otmani, Anas [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
0UZA3422Q4 |
|---|
| Anmerkungen: |
Date Completed 24.06.2020 Date Revised 10.01.2021 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1016/j.scitotenv.2020.139541 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM31028015X |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM31028015X | ||
| 003 | DE-627 | ||
| 005 | 20231225135743.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.scitotenv.2020.139541 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1034.xml |
| 035 | |a (DE-627)NLM31028015X | ||
| 035 | |a (NLM)32445829 | ||
| 035 | |a (PII)S0048-9697(20)33058-8 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Otmani, Anas |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Impact of Covid-19 lockdown on PM10, SO2 and NO2 concentrations in Salé City (Morocco) |
| 264 | 1 | |c 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 24.06.2020 | ||
| 500 | |a Date Revised 10.01.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2020 Elsevier B.V. All rights reserved. | ||
| 520 | |a Covid-19 was first reported in Morocco on March 2, 2020. Since then, to prevent its propagation, the Moroccan government declared a state of health emergency. A set of rapid and strict countermeasures have taken, including locking down cities, limiting population's mobility and prohibiting almost all avoidable activities. In the present study, we attempted to evaluate the changes in levels of some air pollutants (mainly PM10, NO2 and SO2) in Salé city (North-Western Morocco) during the lockdown measures. In this context, a continuous measurement of PM10, SO2 and NO2 was carried before and during the Covid-19 lockdown period. As a consequence of the security measures and control actions undertaken, the emissions from vehicle exhaust and industrial production were significantly reduced, which contribute to the decrease in the concentrations of the studied pollutants. The obtained results showed that the difference between the concentrations recorded before and during the lockdown period were respectively 75%, 49% and 96% for PM10, SO2 and NO2. PM10 levels were much less reduced than NO2. The three-dimensional air mass backward trajectories, using the HYSPLIT model, demonstrated the benefits of PM10 local emission reductions related to the lockdown were overwhelmed by the contribution of long-range transported aerosols outside areas. In addition, noteworthy differences in the air mass back trajectories and the meteorology between these two periods were evidenced | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Covid-19 | |
| 650 | 4 | |a Lockdown | |
| 650 | 4 | |a Morocco | |
| 650 | 4 | |a NO(2) | |
| 650 | 4 | |a PM(10) | |
| 650 | 4 | |a SO(2) | |
| 650 | 7 | |a Air Pollutants |2 NLM | |
| 650 | 7 | |a Particulate Matter |2 NLM | |
| 650 | 7 | |a Sulfur Dioxide |2 NLM | |
| 650 | 7 | |a 0UZA3422Q4 |2 NLM | |
| 650 | 7 | |a Nitrogen Dioxide |2 NLM | |
| 650 | 7 | |a S7G510RUBH |2 NLM | |
| 700 | 1 | |a Benchrif, Abdelfettah |e verfasserin |4 aut | |
| 700 | 1 | |a Tahri, Mounia |e verfasserin |4 aut | |
| 700 | 1 | |a Bounakhla, Moussa |e verfasserin |4 aut | |
| 700 | 1 | |a Chakir, El Mahjoub |e verfasserin |4 aut | |
| 700 | 1 | |a El Bouch, Mohammed |e verfasserin |4 aut | |
| 700 | 1 | |a Krombi, M'hamed |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The Science of the total environment |d 1972 |g 735(2020) vom: 15. Sept., Seite 139541 |w (DE-627)NLM000215562 |x 1879-1026 |7 nnns |
| 773 | 1 | 8 | |g volume:735 |g year:2020 |g day:15 |g month:09 |g pages:139541 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.scitotenv.2020.139541 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 735 |j 2020 |b 15 |c 09 |h 139541 | ||