During the first half of the year 2020 because of the appearance of coronavirus SARS-CoV-2 and its associate illness “coronavirus disease 2019” (COVID-19) lockdown measures were adopted in Spain producing an exceptional situation in air pollutant emission scenarios due to a sharp decrease in road traffic and industrial activity. The main atmospheric effect related to the lockdown measures analyzed in this research, with the help of the GAME code, is the aerosol direct radiative forcing. The analysis presented in this study is based on the estimation of aerosol radiative forcing before and during the lockdown in Spain, using data from 6 stations scattered across the Iberian Peninsula that belong to the ICENET network and present very different climatic characteristics. As preliminary results, some statistically significant variations have been found between the radiative forcing before and during the lockdown both in the SW and in the LW components.
Barragan et al. (Thu,) studied this question.