沖縄本島都市域における熱収支の季節変化

• 下瀬 龍

  琉球大学大学院理工学研究科

• 木村 玲二

  鳥取大学乾燥地研究センター

• 石島 英

  琉球大学理学部物質地球科学科

書誌事項

タイトル別名

• Seasonal Variation of the Heat Balance in the Urban Area of Okinawa Island.
• オキナワ ホントウ トシイキ ニ オケル ネツ シュウシ ノ キセツ ヘンカ

抄録

In this study, the seasonal variation of the heat balance in the urban area of Okinawa Island is evaluated. First, the validity of a calculation method of the heat balance was examined by the comparison of surface temperature using an infrared thermometer and a calculation of the heat balance during winter, summer and early winter. The root-mean-squared error between the observed and calculated values of surface temperature was 1.1°C. The annual evaporation was estimated using an observational data of the measurement of flow rate of Hijya River basin in which the urban area occupies about 90% of the river basin. The annual evaporation from the year of 1984 to 1997 was 280±25mm, while the average annual rainfall was 1877mm. Also, the annual evaporation and the heat balance components were estimated using a calculation method of the heat balance in the urban area of Okinawa Island. The averaged annual evaporation obtained for the years from 1989 to 1999 was 368±42mm, for which the average annual rainfall was 1988mm. The result of these estimations indicated that the annual evaporation in the urban area of Okinawa Island almost closed to constant value within the observed value of annual rainfall examined in this study. The averages of the annual surface temperature, sensible heat flux, and latent heat flux was 25.6°C, 52.3 Wm-2 and 28.5 Wm-2, respectively.

収録刊行物

• 水文・水資源学会誌

  水文・水資源学会誌 15 (1), 51-59, 2002

  水文・水資源学会

キーワード

• 都市域,熱収支,水収支

詳細情報

• CRID: 1390001204438784256
• NII論文ID: 130003447458
• NII論文ID: 10007670952
• NII書誌ID: AN10088049
• DOI: 10.3178/jjshwr.15.51
• ISSN: 13492853
• ISSN: 09151389
• NDL書誌ID: 6051354
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6051354
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可