Fig. 4: Anatomy of an HFE—impact of turbulence intensity variations.
From: Dissecting cirrus clouds: navigating effects of turbulence on homogeneous ice formation
For the two Turb scenarios, a–d show probability (P) distributions of ice crystal number mixing ratio (ni) and radius (ri), respectively, derived from all vertical profiles per ensemble. Grey curves repeat the corresponding results from the Base to facilitate comparison. The arrows mark the distribution core around the mean ICNC that broadens with increasing turbulence intensity. e illustrates the broadening by showing the relative ICNC dispersion (δ) vs turbulence dissipation rate (ε). f shows the ratio (τ) of supersaturation quenching time over eddy turnover time vs eddy length (L) for mean and maximum ICNCs evaluated for 5 μm ice crystals. The grey shadings mark the ranges of values of ε (baseline value 10−5 m2 s−3) and L (mean value 0.25 m) represented in the simulations.
