研究者データベース
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研究者情報
マスター
アカウント（マスター）
氏名
岡田 啓嗣(オカダ ケイジ), オカダ ケイジ
所属（マスター）
所属（マスター）
独自項目
syllabus
- 2021, 地域環境学特論Ⅱ, Advanced Regional Environment II, 修士課程, 農学院, スケールアップ，フットプリント，広域フラックス，大気境界層，モデル，土壌物理特性，測定方法，空間変動性，陸域生態系，ガス交換、非特定発生源、トレーサー
- 2021, 情報解析学演習, Practices on Information Analysis, 学士課程, 農学部, データ処理，MS-Excel，多変量解析，C言語，R，グラフ作成
- 2021, 生物環境工学実験Ⅰ, Laboratory Work on Bioresource and Environmental Engineering Ⅰ, 学士課程, 農学部, 微気象，環境，情報処理，GIS，機器開発，センサー，生態系保全，モニタリング
- 2021, 生物環境工学実習, Field Training on Bioresource and Environmental Engineering, 学士課程, 農学部, 作物，生産，土，水，大気，環境，農作業，機械，食品，廃棄物，循環
- 2021, 測量学実習, Training on Surveying, 学士課程, 農学部, 平面測量，基準点測量，地形測量，現地踏査
- 2021, 生物環境工学基礎実験, Laboratory Work on the Instrumentation of Bioresource and Environmental Engineering, 学士課程, 農学部, 計測，距離と位置，土壌，水質，流量，力と加速度，温度，湿度，空気質，放射，農産物，画像計測
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プロフィール情報
学位
プロフィール情報
姓
岡田, オカダ名
啓嗣, ケイジID各種
200901073227115209
業績リスト
研究キーワード
研究分野
MISC
- Keiji Okada, Takashl Machimura, Ikuo Horiguchi, Shinichi Urano Journal of Agricultural Meteorology 56 (4) 261 -273 2000年09月01日 [査読無し][通常論文]
A new method for estimation of regional evapotranspiration using satellite derived datais proposed. This method estimates daily regional evapotranspiration by combining high resolution LANDSAT-TM data, NOAA-AVHRR data of which the estimation accuracy of surface temperature is high, and wide-area representative radiosonde data. As a case study, we caluculated the epavotranspiration for 2 districts in the Hokkaido Ishikari Plain using this method. Results are reasonable. Though there is no direct method for verification, comparison with the Prisetley-Taylor method shows that the results correctly reflect the effects of land use. This result shows that this method is sensitive to land use and that it is a useful method for estimation of the regional evapotranspiration. The representativeness of the radiosonde data is questionable in the comparison between results from 2 regions. Though there are some details to be improved, this could be a valuable method by which the regional evapotranspiration can be estimated using easily obtainable data. © 2000, The Society of Agricultural Meteorology of Japan. All rights reserved. - Seasonal Variations in the Turbulence Spectra Above and Within a Decidons ForestJ. Agric. Meteorol 52 (5) 509 -512 1997年 [査読無し][通常論文]
- Machimura T., Nakai T., Okada K., Tanaka Y., Urano S., Horiguchi I. 農業気象 52 (5) 497 -500 1997年 [査読無し][通常論文]
The decoupling theory presented by Jarvis and McNaughton (1986) was used in the comparison of the evapotranspiration characteristics of forest, corn and alfalfa canopies. The average values of the decoupling factor Ωc were 0.53, 0.74 and 0.88 in the forest, corn and alfalfa, respectively, which was in the opposite order for the aerodynamic roughness of the canopies. Ωc varied largely with the change of the canopy resistance. The Ωc indicated the variability of the ratio of the evapotranspiration to the available energy (lE/A). When Ωc<0.8, the reliability of the evapotranspiration models based on the available energy (e. g. Priestley-Taylor model) should decrease. - decopling式による群落蒸発散の評価北海道の農業気象 (48) 21 -26 1996年 [査読無し][通常論文]
- Characteristics of Canopy Evapotranspiration Using 'decoupling' Equation(48) 21 -26 1996年 [査読無し][通常論文]