Back to Results List

Export

Link to this page

Please use this URL for citations.

Search Other Services

Statistics

  • Access to this page：1,648 times

＜departmental bulletin paper＞
The Evaluation of the Thermal Environment of Lands with Different Cover

Creator
Author PID
K001552
Creator Name
中野, 芳輔
Nakano, Yoshisuke
Affiliation
Affiliation Name
九州大学農学部灌漑利水工学教室
Laboratory of Irrigation and Water Utilization, Faculty of Agriculture, Kyushu University
Author PID
L000796
Creator Name
黒田, 正治
Kuroda, Masaharu
Affiliation
Affiliation Name
Laboratory of Irrigation and Water Utilization, Faculty of Agriculture, Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1989-01
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
43
Issue
1/2
First Page
69
Last Page
75
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/23310
Related DOI
九州大學農學部學藝雜誌 || 43(1/2) || p69-75
Science bulletin of the Faculty of Agriculture, Kyushu University || 43(1/2) || p69-75
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 43(1/2) || p69-75
Science bulletin of the Faculty of Agriculture, Kyushu University || 43(1/2) || p69-75
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 43(1/2) || p69-75
Science bulletin of the Faculty of Agriculture, Kyushu University || 43(1/2) || p69-75
http://www.agr.kyushu-u.ac.jp/

Hide fulltext details.

pdf p069 pdf 430 KB 271  

Details

Record ID
23310
Peer-Reviewed
Unrefereed
Subject Terms
土地利用形態
熱的環境
メッシュアナリシス法
ISSN
0368-6264
NCID
AN0005519X
Notes
It is clear that ground conditions have a large effect on the thermal environment. A numerical experiment was carried out to determine the diurnal changes of energy flux on various types of land use. Wind velocity, potential temperature and specific humidity were applied respectively at the upper boundary 100 m, and a temperature was specified for the lower boundary -0.5 m. All these conditions were kept constant throughout the simulation period. The analysis were performed on the basis of data obtained in Fukuoka City (latitude 33 33'N) on July. The model was simplified by (1) omitting advection, (2) no consideration on the topographical difference and (3) adopting the most outstanding land usage as the unit mesh (200 m X 200 m) character. The daily amounts of sensible and latent heat flux were large in a order of town, upland field, paddy field, orchard and forest. And that of latent heat flux was in a reverse order. Recently, remote-sensing is widely used for the exvironmental assessment. But in most cases, those are limited to the instantaneous data. The simulation presented here will effectively be used for the estimation of unknown data which cannot be measured.
土地利用形態が生活空間内の熱的環境におよぼす影響について,定量的評価を試みた.シミュレーションモデルは各地目に典型的な地被物を想定し,熱的,空力的特徴量をそれぞれ付与した.気温,湿度,風速等の入力データは福岡市上空100mの7月の平均値を用い,日射量は7月26日の実測値を用いた.その結果1日間の顕熱伝達量および地中熱伝達量の総量は市街地,畑地,水田,樹園地,林地の順であり,潜熱伝達量はこの逆であった.しかし,今回の評価法には,1.水平移流項を無視したこと,2.地形の影響を考慮していないこと,3.各土地利用形態に与えた特徴量は,実際には局所的に異なること,4.年間を通した場合,植物には活性期,不活性期がある,など残された問題もある.近年,リモートセンシング技術の発達により,人工衛星,飛行機等を用いた広域的な諸環境評価が試みられている.しかしこうした探査は瞬時であるため,これを補完するために本報で述べたシミュレーション技法が必要とされる.
Created Date 2012.07.25
Modified Date 2022.11.11

People who viewed this item also viewed

Back to Results List