<原著>近畿大学奈良キャンパスの気象--地形と植生のもたらす影響

概要

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[Synopsis] Meteorological data, collected for three years between 2007 and 2009, were used to characterize the meteorological conditions of the Kinki University Nara Campus（ the Kindai Campus）. The Kindai Campus（ 34°40.3'N, 135°44.0'E, elevation 185m） is located in a ‘satoyama’ forest on a slope of the Yata Hill. Corresponding data from the Nara Meteorological Observatory （ 34°41.6'N, 135°49.6'E, elevation 104m） were used for comparison. Additionally, the air temperatures measured at Gojyo AMeDAS Point （ 34°22.8'N, 135°43.8'E, elevation 190m） were incorporated in an analysis. The daily amplitudes of the air temperature at Kindai Campus were the smallest all year round among the three sites studied. This was presumably because the vegetation and topography of Kindai Campus alleviated the occurrence of extreme temperatures. Ample vegetation on and around the site may have reduced radiative heating around noon, while the topographic location may have allowed for the site not to dip in a cold air lake occurring on the Nara Basin on calm nights. In other words, our analysis showed that the site was situated on the thermal belt of Yata Hill. Rain occurred more frequently, albeit slightly, on the Kindai Campus than on the Nara Meteorological Observatory. This was probably due to precipitation events associated with uphill airflows along the slope where the site was located.