Climatic Characteristics of Heavy Snowfall and the Water Vapor Transport Characteristics in Typical Snowfall Events in Hunan Province of China

Table 1

Total trajectories, contributions of specific humidity and water vapor flux, pseudoequivalent potential temperature, and temperature in each channel for various heavy snowfall processes.

Heavy snowstorm types	Physical quantities	High-latitude inland channel (channel 1)	Somali jet channel (channel 2)	Eurasian channel (channel 3)	Bay of Bengal channel (channel 4)	Indo-China Peninsula channel (channel 5)	North China Plain channel (channel 6)
SBT type	Total trajectories		204		230	237	625
	Contribution of specific humidity (%)		17.87		18.62	22.65	36.79
	Contribution of water vapor flux (%)		17.87		18.65	22.68	36.73
	Pseudoequivalent potential temperature (K)		306.43		298.42	293.05	280.29
BHC type	Total trajectories	836		520	257		1243
	Contribution of specific humidity (%)	22.76		19.72	10.81		46.70
	Contribution of water vapor flux (%)	22.74		19.72	10.83		46.70
	Pseudoequivalent potential temperature (K)	274.02		300.19	298.29		286.34
Stepped trough type	Total trajectories	3839		1123	2237
	Contribution of specific humidity (%)	45.40		18.26	36.34
	Contribution of water vapor flux (%)	45.38		18.32	36.30
	Pseudoequivalent potential temperature (K)	278.08		296.51	291.94