Why was the Japanese hottest temperature of 41.1℃ recorded at Hamamatsu?

DOI Web Site
  • TAKANE Yuya
    Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology
  • ITO Takahiro
    Meteorological College

Bibliographic Information

Other Title
  • なぜ浜松で歴代最高気温41.1℃が観測されたか？
  • なぜ浜松で歴代最高気温41.1℃が観測されたか? : 実況と過去の高温事例との比較による考察
  • ナゼ ハママツ デ レキダイ サイコウ キオン 41.1℃ ガ カンソク サレタ カ? : ジッキョウ ト カコ ノ コウオン ジレイ ト ノ ヒカク ニ ヨル コウサツ
  • —実況と過去の高温事例との比較による考察—

Search this article

Description

<p> Here we investigated features of the Japanese hottest temperature of 41.1℃ observed in Hamamatsu, Shizuoka, Japan, on 17 August 2020. The result suggested that a whale’s tail pressure pattern with high-temperature and northwesterly wind above the mixed-layer, as well as continuous clear skies over the Nobi Plain, were necessary conditions for the 41.1℃ event. In addition to these background factors, a foehn-like wind with diabatic heating from urban and the dry ground surface directly contributed to the 41.1℃. This heated airflow entered Hamamatsu was blocked by the southerly wind east of Hamamatsu, which was the reason why the highest temperature was observed in Hamamatsu. As the mechanism described here is similar to that in past high-temperature events in Japan, any other regions may also experience such high temperatures over 40℃ in near future when the background factors and the foehn-like wind be combined there.</p>

Journal

  • Tenki

    Tenki 68 (3), 149-163, 2021

    Meteorological Society of Japan

Keywords

Details 詳細情報について

Report a problem

Back to top