Figure 2: SOA phase state in the global atmosphere.
From: Global distribution of particle phase state in atmospheric secondary organic aerosols
Modelled annual averages of the inverse ambient temperature (1/T) scaled by the glass transition temperature (Tg) of SOA (Tg/T) at the surface, 850 and 500 hPa, respectively, for the years 2005–2009. Tg/T is an indicator of the particle phase state: Tg/T≥1, solid; ∼0.8<Tg/T<1, semi-solid; Tg/T≤ ∼0.8, liquid. The black squares in the top panel indicate specific areas over the Amazon basin, US, Europe, Sahara, India and East China, respectively (Fig. 3a).
