Table 3 Organic mass fraction and updraft criteria, established from Fig. 3b and d, yielding significant cloud microphysical responses to the surface phase

From: Key drivers of cloud response to surface-active organics

 

Cloud microphysical susceptibility criteria

Environment

ΔCDNC > 10%

Δα > 5%

Marine (MA)

Forg > 0.2 all w

0.35 < Forg< 0.95 w < 4.5 ms−1

Boreal, Hyytiälä (HYY)

Forg > 0.3 all w

0.6 < \(F_{{\mathrm{org}}}\)< 0.95 w < 6.0 ms−1

  1. Criteria set on cloud albedo response to the surface Δα = 5% correspond to cloud droplet number concentration responses ΔCDNC = 22 and 28% for MA and HYY environments, respectively. Multiple criteria in a given cell must be satisfied simultaneously
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