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transport protocol » transport protein (Expander búsqueda), transport proteins (Expander búsqueda), transporte proyectos (Expander búsqueda)
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transport protocol » transport protein (Expander búsqueda), transport proteins (Expander búsqueda), transporte proyectos (Expander búsqueda)
mac transport » a transport (Expander búsqueda), c transport (Expander búsqueda), metal transport (Expander búsqueda)
1
artículo
Publicado 2021
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Enlace
This global study, which has been coordinated by the World Meteorological Organization Global Atmospheric Watch (WMO/GAW) programme, aims to understand the behaviour of key air pollutant species during the COVID-19 pandemic period of exceptionally low emissions across the globe. We investigated the effects of the differences in both emissions and regional and local meteorology in 2020 compared with the period 2015–2019. By adopting a globally consistent approach, this comprehensive observational analysis focuses on changes in air quality in and around cities across the globe for the following air pollutants PM2.5, PM10, PMC (coarse fraction of PM), NO2, SO2, NOx, CO, O3 and the total gaseous oxidant (OX = NO2 + O3) during the pre-lockdown, partial lockdown, full lockdown and two relaxation periods spanning from January to September 2020. The analysis is based on in situ ground-based ai...