Simulating Heavy Meiyu Rainfall: A Note on the Choice of the Model Microphysics Scheme

Table 2

Summary of hydrometeor size distributions in the Morrison, Thompson, and MY schemes.

Scheme	Category	Distribution	(m^−4)	()
Morrison	Cloud	GAMA	Varies to maintain a constant total number density of 250 × 10^6 (m^−3)		3	3 × 10^7	2	997	0	Dependent on droplet number density
	Rain	EXP	Prognostic		3	841.99667	0.8	997	0	0
	Ice	EXP	Prognostic		3	700	1	500	0	0
	Snow	EXP	Prognostic		3	11.72	0.41	100	0	0
	Graupel	EXP	Prognostic		3	19.3	0.37	400	0	0
Thompson	Cloud	GAMA	100 × 10^6		3	0	0	1000	195	Min(15)
	Rain	EXP	Prognostic		3	4854.0	1	1000	195	0
	Ice	EXP	Prognostic		3	1847.5	1	890	0	0
	Snow	EXP + GAMA	Temperature-dependent	0.069	3	40	0.55	Varies with D^d	100	0.636
	Graupel	EXP	Varies according to a function of total mass and size distribution		3	442	0.89	500	0	0
MY	Cloud	GAMA	Varies to maintain a constant total number density of 200 × 10^6 (m^−3)		3	0	0	1000	0	0
	Rain	EXP	Prognostic		3	149.1	0.5	1000	0	0
	Ice	EXP	Prognostic	440	3	71.34	0.6635	500	0	0
	Snow	EXP	Prognostic		2.08	11.72	0.41	Varies with D	0	0
	Graupel	EXP	Prognostic		3	19.3	0.37	400	0	0