Geographical distribution estimation of phenological date of human behaviors in Japan

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  • 日本における生活季節期日の全国分布の推定
  • ニホン ニ オケル セイカツ キセツ キジツ ノ ゼンコク ブンプ ノ スイテイ

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<p>The purpose of this study is to derive the contour maps the lines of which indicate the same dates for starting and ending the human seasonal behaviors. The web-based questionnaire in which respondents were asked to respond if they did the 21 behaviors each day of the week, was repeated every Sunday for a year and was open until the 111 males and 111 females in Kyoto completed it. The outdoor temperature, humidity, wind velocity, and shortwave and longwave radiation were observed in Kyoto during the questionnaire periods, and the thermal comfort index ETVO was calculated based on these meteorological data. Using the regression equations from the scatter plots of the percentage of the behaviors versus the daily mean ETVO, the ETVO values (referred to 20 or 80% ETVO) on the dates (referred to first/last dates 20 or 80%) on which 20 or 80% of the respondents start/end the behaviors were calculated. The dates on which the daily mean ETVO at 836 observatories distributed in Japan correspond to the 20 or 80% ETVO of first/last dates with regard to each behavior, were defined as the behavior’s first/last dates 20 or 80% at the observatories, and then the contour maps of the first/last dates 20 or 80% were drawn. Compared with the previous study on “kotatsu” in 1950’s, it was estimated people nowadays started using “kotatsu” two weeks earlier and ended one month later in most areas.</p>


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