Macro-scale airflow patterns in the japanese islands

概要

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Daily surface wind distributions in the Japanese Islands in 1973 are classified by cluster analysis. As a result, twelve macro-scale airflow patterns are clarified. Their resultant wind patterns are characterized as follows: southwesterly wind or sea breeze (a1-a4 type), northeasterly wind (b1-b3 type), and northwesterly wind (c1-c5 type). Applying discriminant analysis to the other years, the daily patterns are clarified from 1968 to 1977. According to their frequency in the calender pentad, the periods in which each type prevails are as follows: summer (a1-a4 type), spring or autumn (b1-b3 type) and winter (c1-c5 type). Furthermore, the macro-scale airflow patterns are considered good indicators of the climate in the Japanese Islands.
首都大学東京の論文