On Wind-roses of Meteorological Elements on Mt. Tukuba

[摘要] In the year 1932, we investigated deviations of some meteorological elements, such as temperature, water vapour etc., using the data of last 10 years observed at the summit of Mt. Tukuba, under the guidance of Prof. S. Fujiwhara and R. Sekiguti, in view of investigating the nature of anticyclones (air mass) which has an intimate relation with the weather of K wanto district.By the investigations of C. G. Rossby and others, it has been appreciated generally that the equivalent potential temperature is the most conservative quantity and therefore the best index to be used for the purpose of air mass analysis. Thus, we have recounted the deviations in the form of equivalent potential temperature form the data formerly obtained. By the tables and figures shown in this paper, we can see the characteristics of the polar maritime air frequently brought to the central part of Honsyu by the NE erly wet and cold wind with cloudy weather from the region of high pressure over the O kho tsk Sea.

[学科分类] 大气科学