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Table 1 Summary of different versions of NDW6

From: Toward reduction of the uncertainties in climate sensitivity due to cloud processes using a global non-hydrostatic atmospheric model

Abbreviated name (reference paper)

Main features

SN14 (Seifert and Beheng 2006; Seiki and Nakajima 2014)

Minor changes from Seifert and Beheng (2006): the power law relationships between x and D and between x and A are assumed and the terminal velocity is diagnosed using x, D, and A.

S14 (Seiki et al. 2014)

Cloud optical properties are updated from Mie scattering to non-spherical scattering. The heterogeneous ice nucleation scheme proposed by Meyers et al. (1992) is replaced by the scheme proposed by Phillips et al. (2007).

S15 (Seiki et al. 2015b)

Homogeneous ice nucleation is newly implemented by referring to Ren and McKenzie (2005) and Kärcher et al. (2006). Values of the sticking efficiency at temperature lower than 253 K is limited to its value at 253 K in aggregation between ice hydrometeors.

S15V (Seiki et al. 2015b)

The maximum vertical grid spacing is limited to 400 m below an altitude of 20 km. Accordingly, the number of vertical layers increases from 40 to 74.

S15VH (Seiki et al. 2015b)

Horizontal grid size is refined from 14 to 7 km. Accordingly, the model time step is changed from 30 to 15 s.