7Matsumato, S. K., Ninomiya and S. Yoshizumi, Characteristic features of" Baiu" front associated with heavy rainfall, J. Meteor. Soc. Japan, 1971, 49, 267～281.
8Bell, G. D. and J. E. Janowiak, Atmospheric circulation associated with the midwest floods of 1993. Bull. Amer.Meteor. Soc., 1995, 76(5), 681 ～ 695.
9Braham, R. R., Jr., The midwest snow storm of8-11 December 1977, Mon. Wea. Rev., 1983, 111,253- 272.
10Uccellini, L. W., D. Keyser, K. F. Brill and C. H. Wash, The Presidents＇ Day cyclone of 18-19 February 1979:Influence of upstream trough implication and associated tropopause folding on rapid cyclogenesis, Mon. Wea.Rev., 1985, 113, 962～ 988.
