JaLCDOI 10.18926/fest/54863
Title Alternative Evaluation of drop in official air temperature record at Okayama caused by relocation of observation field of Okayama Local Meteorological Observatory - By comparison with records observed at surrounding points -
FullText URL fest_022_061_064.pdf
Author Miura, Takeshi| Ueda, Yu| Morita, Hidenori| Chikamori, Hidetaka| Kurokawa, Masahiro| Nakashima, Yoshitaka| Oki, Yoko|
Abstract Statistical change in official temperature records at Okayama City caused by relocation of meteorological observation field of Meteorological Agency was evaluated. The observation field of Okayama local meteorological observatory was moved to the Tsushima Campus of Okayama University from the downtown area of Okayama City in March, 2015. Comparison between the air temperature records measured at meteorological agency station and the records at Tanjo Pond in Tsushima Campus, showed 0.56 ℃ drop in annual average before and after relocation. Moreover, comparison between the records of Okayama local meteorological observatory and that at the surrounding meteorological observing 9 stations showed 0.55 ℃ drop in annual average. Those results suggest that the relocation dropped annual average of air temperature by about 0.6 ℃.
Keywords Okayama Local Meteorological Observatory relocation drop in air temperature
Publication Title 岡山大学環境理工学部研究報告
Published Date 2017-03
Volume volume22
Issue issue1
Start Page 61
End Page 64
ISSN 2187-6940
language 日本語
File Version publisher
NAID 120005997444
JaLCDOI 10.18926/fest/54862
Title Alternative Method for predicting minimum air temperature in the next morning using local meteorological observation data - Improvement on minimum air temperature forecasting system utilizing the Internet -
FullText URL fest_022_055_059.pdf
Author Ueda, Yu| Mishima, Takuya| Miura, Takeshi| Moroizumi, Toshitsugu|
Abstract We have developed a minimum air temperature forecasting system using local meteorological observation data in order to prevent or mitigate the frost damage. In this paper, the correlation between the meteorological factors and the decrease in air temperature during the night was shown. Then minimum air temperature was predicted by the multiple regression equation that uses air temperature and humidity at 18:00 as explanatory variables. As the result, the root mean square error (RMSE) was 2.8°C. When the difference of air temperature between 17:00 and 18:00 was used for the prediction instead of humidity, the RMSE was 3.5°C. Next, the prediction was carried out only in clear nights, then the equation that use air temperature and humidity at 18:00 showed that the RMSE was 1.3°C. Although the predictive accuracy of the equations for clear nights is low on cloudy or rainy nights, we can forecast safely on frosty nights by using those equations in combination with the equations for all nights.
Keywords Minimum air temperature prediction frost damage IT multiple regression analysis
Publication Title 岡山大学環境理工学部研究報告
Published Date 2017-03
Volume volume22
Issue issue1
Start Page 55
End Page 59
ISSN 2187-6940
language 日本語
File Version publisher
NAID 120005997443
JaLCDOI 10.18926/fest/53219
Title Alternative Building of minimum air temperature forecast system using the Internet -Design of the forecast website-
FullText URL fest_020_035_040.pdf
Author Mishima, Takuya| Miura, Takeshi| Moroizumi, Toshitsugu|
Abstract  The purpose of this study is to build a forecast system for predicting at minimum air temperature in the next morning from the meteorological data, such as air temperature, humidity, and the amount of solar radiation, in a field in the evening on the previous day. The meteorological data are sent to a relay server, and then, transferred to a PC in our laboratory of Okayama University by executing the computer program to import the data which are used to calculate the predicted values of minimum air temperature. The predicted minimum air temperatures are released for the farmers on the website in the server of Okayama University. The website is also created by our laboratory. As a result, the predicted minimum air temperatures agreed with the measured ones.
Keywords Minimum air temperature prediction internet frozen disaster
Publication Title 岡山大学環境理工学部研究報告
Published Date 2015-03
Volume volume20
Issue issue1
Start Page 35
End Page 40
ISSN 2187-6940
language 日本語
File Version publisher
NAID 120005572534
Author Nakamichi, Takeshi| Moroizumi, Toshitsugu| Miura, Takeshi|
Published Date 2011-03-18
Publication Title 岡山大学環境理工学部研究報告
Volume volume16
Issue issue1
Content Type Departmental Bulletin Paper
Author Moroizumi, Toshitsugu| Kusuyama, Tomoyo| Miura, Takeshi|
Published Date 2009-12
Publication Title 環境制御
Volume volume31
Content Type Departmental Bulletin Paper
Author Takahashi, Sin-Ei| Miura, Takeshi| Hatori, Osamu|
Published Date 2004-01
Publication Title Mathematical Journal of Okayama University
Volume volume46
Issue issue1
Content Type Journal Article
Author Miura, Takeshi|
Published Date 2002-01
Publication Title Mathematical Journal of Okayama University
Volume volume44
Issue issue1
Content Type Journal Article
Author Moroizumi, Toshitsugu| Sasaki, Yumi| Miura, Takeshi|
Published Date 2008-12
Publication Title 環境制御
Volume volume30
Content Type Journal Article
Author 吉崎 文人| 黒田 訓宏| Miura, Takeshi| Moroizumi, Toshitsugu|
Published Date 2004-07-01
Publication Title 岡山大学農学部センター報告
Volume volume26
Content Type Departmental Bulletin Paper
Author 猪原 幸子| Iwata, Tooru| Miura, Takeshi|
Published Date 2004-07-01
Publication Title 岡山大学農学部センター報告
Volume volume26
Content Type Departmental Bulletin Paper
Author 牛川 希望| Iwata, Tooru| Miura, Takeshi|
Published Date 2004-07-01
Publication Title 岡山大学農学部センター報告
Volume volume26
Content Type Departmental Bulletin Paper
Author Abenney-Mickson Stephen| Miura, Takeshi|
Published Date 1996-03
Publication Title 岡山大学環境理工学部研究報告
Volume volume1
Issue issue1
Content Type Departmental Bulletin Paper
Author Miura, Takeshi|
Published Date 1996-03
Publication Title 岡山大学環境理工学部研究報告
Volume volume1
Issue issue1
Content Type Departmental Bulletin Paper
Author Morita, Noboru| Miura, Takeshi|
Published Date 1998-01-14
Publication Title 岡山大学環境理工学部研究報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Author Moroizumi, Toshitsugu| Sato, Yuichi| Sato, Koichi| Miura, Takeshi|
Published Date 2001-02-28
Publication Title 岡山大学環境理工学部研究報告
Volume volume6
Issue issue1
Content Type Departmental Bulletin Paper
Author Moroizumi, Toshitsugu| Yomota, Atsushi| Miura, Takeshi|
Published Date 2002-03-22
Publication Title 岡山大学環境理工学部研究報告
Volume volume7
Issue issue1
Content Type Departmental Bulletin Paper
Author Yang, Dongmei| Iwata, Toru| Miura, Takeshi| Ohtaki, Eiji|
Published Date 2004-02-27
Publication Title 岡山大学環境理工学部研究報告
Volume volume9
Issue issue1
Content Type Departmental Bulletin Paper
Author Morimoto, Yuji| Hirano, Emi| Miura, Takeshi|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Hirano, Emi| Morimoto, Yuji| Miura, Takeshi|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author 楊 冬梅| 岩田 徹| 三浦 健志|
Published Date 2003-12
Publication Title 岡山大学農学部センター報告
Volume volume25
Issue issue1
Content Type Departmental Bulletin Paper