このエントリーをはてなブックマークに追加
ID 44792
JaLCDOI
Sort Key
5
Title Alternative
Improvement of complementary relationship-based evapotranspiration model
FullText URL
Author
Nakamichi, Takeshi
Abstract
Advection-Aridity(AA) model can calculate actual evapotranspiration by using only meteorological data. However, comparing the model with Penman equation showed that AA model doesn’t properly evaluate evapotranspiration from urban moisture area. In urban area, Actual evaporation from water calculated by AA model(E) are much less than that by Penman equation(Epo). Multiple regression analysis using estimation results indicates that the difference between the models is due to the difference of the sensitivity to vapor pressure deficit between the models. To improve this problem, modification coefficient k, defined as k=a・albedo+b, is suggested. Regression coefficients a, b are determined as satisfying k=Epo/E for water and k=1 for urban surface. By using this coefficient k, evaporation from water is nearly equal to value estimated by Penman equation, while evaporation from urban surface is changeless.
Keywords
Complementary relationship
Actual evapotranspiration
Potential evapotranspiration
Water budget
Note
研究論文 環境管理工学科
Publication Title
岡山大学環境理工学部研究報告
Published Date
2011-03-18
Volume
volume16
Issue
issue1
Publisher
岡山大学環境理工学部
Publisher Alternative
Faculty of Environmental Science and Technology, Okayama University
Start Page
35
End Page
39
ISSN
2185-3347
NCID
AN10529213
Content Type
Departmental Bulletin Paper
OAI-PMH Set
岡山大学
language
日本語
File Version
publisher
NAID
Eprints Journal Name
fest