Search Results 1-20 of 155

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A proposal of Summers-type heat balance model for the nocturnal urban boundary layerwith heat sinks by the radiative cooling and the horizontal thermal diffusion [in Japanese]

NAKAGAWA Kiyotaka , WATARAI Yasushi

筆者ら(中川ほか2019)は，郊外より余分な地表面からの上向きの顕熱フラックス密度による熱源のみを有する Summers(1965)のプルーム型都市混合層熱収支式に，温暖な境界層によるニュートン冷却機構を追加した式を提案し，興味ある結果が得られることを示した．この度，Summers(1965)の熱収支式に、冷熱源としてニュートン冷却の他に水平熱拡散項を加えることを検討した．その …

Proceedings of the General Meeting of the Association of Japanese Geographers 2020a(0), 30, 2020

J-STAGE
2

Nocturnal warm air outflow from shelterbelt to grassland in eastern Hokkaido [in Japanese]

Iwasaki Kenta , Torita Hiroyuki , Fukuchi Minoru , Abe Tomoyuki

[in Japanese]

The Japanese Forest Society Congress 128(0), 762, 2017

J-STAGE
3

Dependence of Atmospheric Cooling by Vegetation on Canopy Surface Area During Radiative Cooling at Night: Physical Model Evaluation Using a Polyethylene Chamber

OKADA Maki , OKADA Masumi , KUSAKA Hiroyuki

… The plant canopy surface is cooled by radiative cooling at night. … Cooling of the canopy surface results in cooling of the surrounding air by convective heat exchange between the canopy surface and the air. … We conducted physical model experiments using a polyethylene chamber to examine the dependence of the heat exchange at the canopy surface on the canopy surface area during nocturnal radiative cooling. …

Journal of Agricultural Meteorology 72(1), 20-28, 2016

IR J-STAGE
4

Time Evolution of an Urban Heat Island from High-Density Observations in Kyoto City

Iizawa Isao , Umetani Kazuhiro , Ito Aya , Yajima Arata , Ono Kosaku , Amemura Naoki , Onishi Masanori , Sakai Satoshi

… Detailed observations of temperature evolution are required to clarify the mechanism of the nocturnal evolution of urban heat island. … Two phases, before and after the phase shift, are suggested to be controlled by two different mechanisms: radiative cooling and advection. …

SOLA 12(0), 51-54, 2016

J-STAGE
5

Diurnal and Seasonal Relationships between Nocturnal Cooling and Meteorological Parameters: Validation Using Observation Data

KONNO Shohei , OKUBO Sayuri , KANNO Hiromitsu

… We investigated diurnal and seasonal relationships between nocturnal cooling and meteorological parameters by using 5-year observation data from the NARO Tohoku Agricultural Research Center, Japan. … Multiple regression analysis between nocturnal cooling (7J10C) and meteorological parameters (total net radiation, Rntol; …

Japanese progress in climatology (2015), 43-43, 2015-12

IR
6

Diurnal and Seasonal Relationships between Nocturnal Cooling and Meteorological Parameters : Validation Using Observation Data [in Japanese]

KONNO Shohei , OKUBO Sayuri , KANNO Hiromitsu

… We investigated diurnal and seasonal relationships between nocturnal cooling and meteorological parameters by using 5-year observation data from the NARO Tohoku Agricultural Research Center, Japan. … Multiple regression analysis between nocturnal cooling (T_<noc>) and meteorological parameters (total net radiation, Rn_<tot>; …

天気 62(2), 97-103, 2015-02

NDL Digital Collections
7

Experimental study on performance evaluation of nocturnal radiative cooling system Part 1 Overview of the experiment system and measurement results [in Japanese]

丹野博 , 坊垣和明 , 江見和明 , 吉田元紀

本研究では住宅冷房負荷低減の可能性評価を目的として、太陽熱集熱器を使用した夜間放射冷却システムの基礎実験を行った。実験期間での有効日数154日間のうち放射パネル冷却効果のある日でシステム冷却効果のある日は35日間（23％）であった。また、実測データを分析した結果、放射パネル冷却効果に与える要因には放熱時の外気温度と基準水平面温度との差ΔT1と冷媒往き戻り平均温度との差ΔT2があり …

Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 2015.10(0), 197-200, 2015

J-STAGE
8

Experimental study on performance evaluation of nocturnal radiative cooling system Part 2 Theoretical evaluation and improvement study of nocturnal radiative cooling system [in Japanese]

坊垣和明 , 江見和明 , 吉田元紀 , 丹野博

本研究では放射冷却システムの理論式を構築し、その1の基礎実験で得られた放射パネル夜間冷却量の実測値と理論値を比較して理論式の有効性を検証した。また、放射パネル冷却効率の理論式にもとづいて放射パネルの改良を想定した検討を行って、放射板を黒色塗装としガラスなしのタイプよりもガラスありのタイプの方が冷却効果は高くなることを明らかにした。

Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 2015.10(0), 201-204, 2015

J-STAGE
9

ESTIMATION OF DEVIATION INSIDE URBAN AREA FOR DAYTIME MAXIMUM OR NOCTURNAL MINIMUM TEMPERATURE, IN SUMMER WHICH BASED ON LOCAL OBSERVATORY AND GEOGRAPHICAL DATA [in Japanese]

TAKAYAMA Naru , YOSHIKOSHI Hisashi , YAMAMOTO Haruhiko , HARADA Yoko

… Some land cover elements which could act as a cooling or warming effect were defined as the land cover elements, by using Geographic Information System (GIS). … Nocturnal minimum temperature was lower in inland area, and its tendency became more remarkable as a greening area is larger. …

Journal of Environmental Engineering (Transactions of AIJ) 80(717), 1095-1104, 2015

J-STAGE
10

41715 Development of Cooling System that exploits Nocturnal Thermal Radiation and Underground Heat [in Japanese]

HINO Toshiyuki , 大岡龍三

Summaries of technical papers of annual meeting (2014), 1481-1482, 2014-09-12

AIJ
11

Spatio-Temporal Variation of High-Temperature Events in Hokkaido, North Japan

MORI Keisuke , SATO Tomonori

… In January, an extratropical cyclone passage caused intensified warm advection and increased precipitable water vapor, leading to weakened radiative cooling during the night. … However, the nocturnal inversion layer prevented vertical mixing of the foehn-induced warm air aloft and cold air near the ground. … The surface air temperature dramatically increased after sunrise when the nocturnal inversion layer disappeared. …

Journal of the Meteorological Society of Japan. Ser. II 92(4), 327-346, 2014

IR J-STAGE
12

EXERGY EVALUATION OF INDOOR ENVIRONMENT OF NORTHERN REGIONAL HOUSES IN SUMMER [in Japanese]

OMI Yoshiki , KIKUTA Koki , SAKATA Takeru , SAITO Masaya , HAYAMA Hirofumi

… Third, 400[mW/m2] of the cool radiant exergy is emitted at a maximum from the wall surfaces, and that is stored into the surrounding walls, finally 30-60[W] of cool radiant exergy is emitted in the house by the solar shading and the nocturnal ventilation. …

Journal of Environmental Engineering (Transactions of AIJ) 79(696), 159-166, 2014

J-STAGE
13

B-6 Effects of different cooling appliance on elderly people's sleep [in Japanese]

TSUZUKI Kazuyo , MORI Ikue

… The experiments were conducted to investigate the effect of cooling appliance on both sleep and thermoregulatory responses of elderly women in the summer season. … We compared four different thermal environments by an air-conditioner, a cooling panel, and no appliance in the mock-up room built in the climatic chamber. … Thermal sensation, comfort sensation, and evaluations of the sleep were recorded by the subject before and after the nocturnal sleep. …

人間-生活環境系シンポジウム報告集 38, 45-46, 2014

NDL Digital Collections
14

40448 Research on the mitigation of the urban heat island phenomenon by external insulation : (Part 1) The cooling performance evaluation for the nocturnal urban atmosphere provided by the reduced heat capacity of building finishes [in Japanese]

SHIBAIKE Hideki

Summaries of technical papers of annual meeting (2013), 911-912, 2013-08-30

AIJ
15

Effects of large green park on urban atmospheric cooling during nighttime : Meteorological observations around the Osaka Castle Park [in Japanese]

SHIGETA Yoshinori , TAKAOKA Toshiyuki , OHASHI Yukitaka , KIKEGAWA Yukihiro , HIRANO Yujiro

… Next, we compared the atmospheric cooling amounts on the forest area with that on the lawn area. …

JAPANESE JOURNAL OF BIOMETEOROLOGY 50(1), 23-35, 2013-05-10

J-STAGE References (23)
16

Temporal and spatial variability of nocturnal cooling in a complex of small valleys in the Kanto Plain during the winter

KONNO Shohei , NAKANO Tomoko , TAKAHASHI Hideo

… The magnitude of nocturnal cooling in the valley was greater in March than during the mid-winter period. … The horizontal distribution of mean nighttime temperatures and nocturnal cooling under clear and calm conditions indicated that temperatures in the middle or lower areas of the valleys tended to be lower than those in the upper areas even though the elevation differences were small. …

Journal of Agricultural Meteorology 69(3), 191-200, 2013

J-STAGE
17

Diurnal Variations of Summertime Precipitation in South Korea in 2009 Using Precipitation Reanalysis Data

Roh Joon-Woo , Lee Yong Hee , Nam Ji-Eun , Chung Kwan-Young

… Nocturnal precipitation maxima were the result of rain band enhancement from instability due to radiative cooling at the cloud top during the nighttime. …

SOLA 8(0), 155-159, 2012

J-STAGE
18

Vertical Structure of Cool Island in an Urban Green Park [in Japanese]

SUGAWARA Hirofumi , TANAKA Hiroharu , NARITA Ken-ichi , NAKANO Tomoko , MIKAMI Takehiko

… Synchronized kite-balloons measurements revealed the development of a nocturnal stable layer in an urban green park. … The cooling energy for cold air formation over park was estimated to be 5 Wm-2. …

Journal of Geography (Chigaku Zasshi) 120(2), 426-432, 2011-04-25

J-STAGE References (9) Cited by (4)
19

Urban Heat Island at Typical Summer Nights in Kofu Basin [in Japanese]

赤塚慎 , 宇野忠 , 十二村佳樹 [他]

日本ヒートアイランド学会誌 = Heat Island Institute International annual issue 6, 16-22, 2011
20

Development of Method for Evaluation of Cold Air Drainage Potential Using GIS [in Japanese]

赤塚慎 , 杉田幹夫 , 宇野忠

応用測量論文集 22, 74-82, 2011

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