Fig. 1: Variations in PM2.5 and ambient visibility between PLP and LP. | npj Climate and Atmospheric Science

Fig. 1: Variations in PM2.5 and ambient visibility between PLP and LP.

From: Co-benefits of reducing PM2.5 and improving visibility by COVID-19 lockdown in Wuhan

Fig. 1

a Time series of PM2.5, aerosol scattering coefficient (bsp), aerosol absorption coefficient (bap), single scattering albedo (SSA), ambient visibility (VIS), and relative humidity (RH) for pre-lockdown period (PLP, 2019/12/23–2020/01/22) and lockdown period (LP, 2020/01/23–2020/02/22) in Wuhan. The dashed lines mean the average value; **p < 0.01. b The differences in the mass concentrations and fractions of major chemical components in PM2.5 for PLP and LP. c The differences in the contributions of major chemical components in PM2.5 to aerosol extinction coefficient (bext) for PLP and LP. EC elemental carbon, POA primary organic aerosol, SOA secondary organic aerosol, FS fine soil.

Back to article page