It will be necessary to determine the hydrodynamical forces which affect falling snow or snowflake, and to look their falling position, falling trajectory etc. in order to study the collision efficiency between them. In this paper, for preliminary investigation, the method of analysis of these forces and their falling position were shown.
The length of the manuscripts should not exceed 18,000 words for an Article and 4,500 words for Notes and Correspondence (approximately 60 and 15 double-spaced pages formatted using the JMSJ Word template, respectively). The manuscript should be double spaced in 12 point type, and all pages and lines must be numbered consecutively. The word limit does not include the title page, abstract, acknowledgements, references, tables, or figure captions.
