About: Impact of Covid-19 lockdown on PM(10), SO(2) and NO(2) concentrations in Salé City (Morocco)

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About: Impact of Covid-19 lockdown on PM(10), SO(2) and NO(2) concentrations in Salé City (Morocco) Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Impact of Covid-19 lockdown on PM(10), SO(2) and NO(2) concentrations in Salé City (Morocco)
Creator	Benchrif, Abdelfettah Bounakhla, Moussa Otmani, Anas Tahri, Mounia Bouch C , M'hamed Krombi, Mohammed Mahjoub Chakir, El
Source	Elsevier; Medline; PMC
abstract	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 PM(10), NO(2) and SO(2)) in Salé city (North-Western Morocco) during the lockdown measures. In this context, a continuous measurement of PM(10), SO(2) and NO(2) 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 PM(10), SO(2) and NO(2). PM(10) levels were much less reduced than NO(2). The three-dimensional air mass backward trajectories, using the HYSPLIT model, demonstrated the benefits of PM(10) 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.
has issue date	2020-09-15(xsd:dateTime)
bibo:doi	10.1016/j.scitotenv.2020.139541
bibo:pmid	32445829
has license	no-cc
sha1sum (hex)	1c686a72874b71754da144699df700c8450881e7
schema:url	https://doi.org/10.1016/j.scitotenv.2020.139541
resource representing a document's title	Impact of Covid-19 lockdown on PM(10), SO(2) and NO(2) concentrations in Salé City (Morocco)
has PubMed Central identifier	PMC7235599
has PubMed identifier	32445829
schema:publication	Sci Total Environ
resource representing a document's body	covid:1c686a72874b71754da144699df700c8450881e7#body_text
is schema:about of	named entity 'PM 10' named entity 'air mass' named entity 'levels' named entity 'period' named entity 'EVALUATE' named entity 'PERIOD' named entity 'LOCKING' named entity 'local' named entity 'population' named entity 'trajectories' named entity 'strict' named entity 'context' named entity 'Morocco' named entity 'consequence' named entity 'reduced' named entity 'Salé' named entity 'Salé' named entity 'HYSPLIT' named entity 'air mass' named entity 'air mass' named entity 'lockdown' named entity 'PM 10' named entity 'industrial emissions' named entity 'ultrafine particles' named entity 'covid-19' named entity 'drastic measures' named entity 'exhaust emissions' named entity 'meteorology' named entity 'ppb' named entity 'marine vessel' named entity 'relative humidity' named entity 'road traffic' named entity 'anthropogenic' named entity 'anthropogenic sources' named entity 'Moroccan' named entity 'industrial activities' named entity 'air pollution' named entity 'Northern Africa' named entity 'PM 10' named entity 'UTC' named entity 'air mass' named entity 'PM 10' named entity 'Morocco' named entity 'PM 10' named entity 'combustion' named entity 'Moroccan' named entity 'PM 10' named entity 'mass concentrations' named entity 'setting standards' named entity 'waste management' named entity 'health hazards' named entity 'PM 10' named entity 'PM 10' named entity 'Covid-19' named entity 'air quality' named entity 'pollution' named entity 'PM 10' named entity 'Salé' named entity 'PM 10' named entity 'road traffic' named entity 'Rabat-Salé Airport' named entity 'industrial activities' named entity 'air pollution' named entity 'incineration' named entity 'Salé' named entity 'PM 10' named entity 'pollution' named entity 'aerosols' named entity 'residence time' named entity 'PM 10' named entity 'health and safety' named entity 'PM 10' named entity 'Morocco' named entity 'industrial activities' named entity 'ambient air' named entity 'anthropogenic'

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