Surface wind data in fair summer day are statistically analyzed for the purpose to characterize local meteorology in the Fukuoka-Chikushi plane area. Topology of the studied area is similar in environment to Kanto plane or the Nobi plane, like as faced to two different waters. Available data sources, e.g. the JMA's AmeDAS and NIES's AEROS are extracted and used for analysis. 165 fair days are selected from 620 days in summer season on the basis of sunshine hours (more than 6 hours/day). The weather charts are also verified to reject the synoptic scale turbulence, and 108 days are selected as a result. The gridded wind wind profiles are calculated with objective analysis, and also studied the intensity of divergence to estimate the rising air flow. The contour diagram of these divergences show that the Sefuri-mountains and Chikushino-Dazaifu area are obviously strong. This is concordant to high value of SPM amount in Dazaifu area on the analyzed days. This is apparently caused by strengthened thermal by the interaction of two system of sea wind from the Hakata Bay and Ariake Sea. It is possibly predicted the cloud formation by existence of the thermal, enough amount of SPM as condensation nuclei, and humidity in these sea wind.
福岡平野・筑紫平野における夏季晴天時地上風の統計的解析による局地気象の研究
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