Author Nagahori, Kinzo| Miura, Takeshi| Amaya, Takao|
Published Date 1987
Publication Title 岡山大学農学部学術報告
Volume volume70
Issue issue1
Content Type Departmental Bulletin Paper
Author Miura, Takeshi| Yomota, Atushi| Nagai, Akihiro|
Published Date 1989
Publication Title 岡山大学農学部学術報告
Volume volume73
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/fest/44792
Title Alternative Improvement of complementary relationship-based evapotranspiration model
FullText URL fest_016_035_039.pdf
Author Nakamichi, Takeshi| Moroizumi, Toshitsugu| Miura, 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
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
Start Page 35
End Page 39
ISSN 2185-3347
language 日本語
File Version publisher
NAID 120002949472
JaLCDOI 10.18926/fest/11537
Title Alternative Long-term Change Trend of Climate at Aomori City
FullText URL 006_081_084.pdf
Author Moroizumi, Toshitsugu| Sato, Yuichi| Sato, Koichi| Miura, Takeshi|
Abstract Characteristics of long-term change for air temperature, precipitation and snowfall-depth at Aomori city were analyzed with data during the 111 years, from 1886 to 1996. The typical results were as follows: (1) The increasing rate of the annual mean air temperature was 1.07℃/111 year. (2) The increasing rate of the monthly minimum air temperature was larger than that of the monthly maximum air temperature. (3) The increasing rate of the monthly air temperature was large from winter to spring, however, was not so from summer to autumn. (4) The decreasing rate of annual precipitation was 0.187 mm/year. (5) The 5-year moving average of annual snowfall-depth might indicate the existence of about 10-year period.
Keywords Air temperature precipitation snowfall-depth long-term change Aomori city
Publication Title 岡山大学環境理工学部研究報告
Published Date 2001-02-28
Volume volume6
Issue issue1
Start Page 81
End Page 84
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313378