Nocturnal Cooling Near the Ground : (2)Characteristics of the Nocturnal Cooling Obtained from Numerical Simulation Model
Bulletin of the Faculty of Agriculture, Yamaguchi University Volume 40
Page 13-23
published_at 1992-12
Title
夜間の接地気層の冷却について : (2)シミュレーションモデルから得られた夜間冷却の特徴
Nocturnal Cooling Near the Ground : (2)Characteristics of the Nocturnal Cooling Obtained from Numerical Simulation Model
Creators
Hayakawa Seiji
Creators
Tani Hiroshi
Creators
Gu Wei
Creators
Suzuki Yoshinori
Creators
Motoda Yushiro
Source Identifiers
Creator Keywords
eddy transport
nocturnal cooling
radiative cooling
simulation experiment
We tried a computer simulation for the drop of soil temperatures during night by giving various values to the boundary conditions and found a very good correspondence between measured values and calculated values. The numerical analysis showed that factors affecting on nocturnal cooling near the ground were effective radiation, wind speed, degree of dryness of soil and advection of cold air in upper air layer. The sensible heat flux related to the strength of wind speed and soil heat flux related to the thermal properties of soil are important to heat supplying source to the surface of the ground during the period of nocturnal cooling. The response time of temperature from surface to upper air layer which was obtained from observation of air temperature changes with time is approximately proportional to the response time of the eddy transfer by assuming to be Z^2/4K.
Languages
jpn
Resource Type
departmental bulletin paper
Publishers
山口大学農学部
Date Issued
1992-12
File Version
Not Applicable (or Unknown)
Access Rights
metadata only access
Relations
[ISSN]0513-1715
[NCID]AN00244250
Schools
農学部