Local Effective Thermal Inertia Estimated by Cloud Appearance

DOI Web Site 9 References Open Access
  • Onishi Masanori
    Graduate School of Natural Science and Technology, Okayama University Present affiliation: Kyoto University Research Administration Office
  • Iizawa Isao
    Kyoto Municipal Horikawa Senior High School
  • Umetani Kazuhiro
    Graduate School of Natural Science and Technology, Okayama University
  • Ito Aya
    Graduate School of Human and Environmental Studies, Kyoto University
  • Yajima Arata
    Tokyo Tatemono Co., Ltd
  • Ono Kosaku
    Kyoto City
  • Amemura Naoki
    Kobe College Junior and Senior High School
  • Sakai Satoshi
    Graduate School of Human and Environmental Studies, Kyoto University

Description

<p>Heat island intensity approaches the maximum during urban Phase A period, which constitutes a few hours around sunset when radiative cooling primarily determines the temperature decrease. To evaluate the thermal inertia of urban and rural canopy layer, we suggested a local effective thermal inertia (LETI) that corresponds to a canopy layer thermal inertia, excluding advection effects caused by such as heat island circulation, and estimated the value by observing a 30-min temperature variation and radiation flux when clouds appeared during night. The urban area LETI is approximately two times higher than the rural value. LETI has a close relationship to the cooling rate in Phase A and is an important value for urban canopy layer thermal inertia.</p>

Journal

  • SOLA

    SOLA 13 (0), 59-62, 2017

    Meteorological Society of Japan

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