1998 年度実績報告書

アジアモンスーンの形成・変動機構と水資源への影響に関する研究

研究課題

研究課題/領域番号	10041219
研究機関	東京大学
研究代表者	虫明功臣東京大学, 生産技術研究所, 教授 (50011060)
研究分担者	沖大幹東京大学, 生産技術研究所, 助教授 (50221148) 大手信人京都大学, 農学研究科, 助教授 (10233199) 鈴木雅一東京大学, 大学院・農学生命科学研究科, 教授 (10144346) 里村雄彦京都大学, 大学院・理学研究科, 助教授 (20273435) 青木正敏東京農工大学, 農学部, 教授 (60081569)
キーワード	モンスーン / 熱水フラックス / 蒸発散 / 水収支 / チャオプラヤ川 / チベット高原
研究概要	この国際学術研究は熱帯地域(タイ、チャオプラヤ川流域とボルネオ島熱帯雨林)とチベット高原域を対象に本年度最終四半期に、現地での集中観測と継続観測、ルーティンデータ収集を行った。現地集中観測では、フラックス集中観測として、熱帯雨林内での集中観測(マレーシア、サラワク州のランビル国立公園内のツリータワー),乾燥熱帯雨林での集中観測(タイ、チェンマイのコグマ試験地),スコタイ近郊EGAT120m タワー,二次林、バナナ畑など,で熱水フラックス集中観測を一週間程度ずつ観測を行い、ルーチン観測では明らかにできなかった、乾季の蒸発量を同定することができた。また、EGATタワーでは、同時に潅木林地域での広域蒸発量推定を行うためにゾンデ観測を実施した。これに合わせて係留気球による地表面状態観測、更に土壌水分観測も行った。チベット高原上での既設水文、気象観測地点での観測を継続し、できるだけ欠損の少ない通年のデータセットを完成させるための厳冬季の観測法について、実験室を用いて検討を重ね、特に各センサーの低温時での動作状況、温度依存性について明らかにした。タイ、チャオプラヤ川流域とチベット高原域それぞれについて、現地共同研究者との研究打ち合わせを行った。チベット地域については1月に西安で、熱帯地域のについては3月にバンコクでそれぞれ研究打ち合わせを実施し、現在までの観測状況や解析結果を報告し、最新情報の共有を図とともに、共同研究方法と現地機関によるルーチンデータの収集の具体的方法を決定した。

研究成果

(19件)

すべてその他

すべて文献書誌 (19件)

[文献書誌] Jun.Matsumoto: "Climatological study on seasonal changes of Asian summer monsoon and anomalous 1998 monsoon" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Akira.Watanabe: "Characteristics of Atmospheric structure over Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Masatoshi.Aoki: "Heat and water flux monitoring at GAME-Tropics paddy field site and model Of evapotranspiration" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Masakazu.Suzuki: "One dimensional heat and water flux monitoring and modeling in hill evergreen Forest" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Taikan.Oki: "Rainfall measurement by ground radar and TRMM/PR" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Takehiko.Satomura: "Diurnal variations of precipitation,wind and convective activity in monsoon period over Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Herath.A.S.: "Large-scale hydrological modeling" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Hideki.Takizawa: "Seasonal variation of micrometeorological factors in the hill-ever-green forest" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Nobuhito.Ote: "Geographical variation in CO_2/H_2O exchange properties of forest canopy:observations and model applications" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Takehiko.Satomura: "Meso-scale atmospheric modeling" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Masakazu.Suzuki: "Temporal and spatial distribution of rainfall characteristics in Mae Chaem watershed,Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Kazuro.Nakane: "Water balance in Khwaenoi river basin,Thailand Natio.Res.Insti.for Earth Sci.& Disas.Preven." Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)
[文献書誌] Dawen.Yang: "Hydrological modeling in Chao Phraya river basin incorporating reservoir operations" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)
[文献書誌] Teruyuki.Kato: "Estimation of water vapor based on GPS observation in Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)
[文献書誌] Toshiyuki.Nakaegawa: "Water vapor comparison between GPS and sonde observation in Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)
[文献書誌] Kinji.Furukawa: "Present Status of the TRMM" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)
[文献書誌] Katumi.Mushiake: "Comparison of precipitable water vapor retrieved from GPS observation with that from rawinsonde observation" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)
[文献書誌] Jun.Matsumoto: "Large-scale features during the GAME IOP after the largest E1 Nino in this century" Proceedings Asian Pacific FRIEND and GAME Joint Workshop on ENSO Floods and Droughts in the 1990's in southeast Asia and the Pacific,Hanoi,Vietnam,March 1999. (in printing). (1999)
[文献書誌] Jun.Matsumoto: "GAME large-scale Monitoring for the Intensive Observation Period" Center for Climate System research,University of Tokyo(In Printing), (1999)

1998 年度 実績報告書

アジアモンスーンの形成・変動機構と水資源への影響に関する研究

研究代表者

虫明 功臣 東京大学, 生産技術研究所, 教授 (50011060)

研究成果

[文献書誌] Jun.Matsumoto: "Climatological study on seasonal changes of Asian summer monsoon and anomalous 1998 monsoon" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Akira.Watanabe: "Characteristics of Atmospheric structure over Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Masatoshi.Aoki: "Heat and water flux monitoring at GAME-Tropics paddy field site and model Of evapotranspiration" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Masakazu.Suzuki: "One dimensional heat and water flux monitoring and modeling in hill evergreen Forest" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Taikan.Oki: "Rainfall measurement by ground radar and TRMM/PR" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Takehiko.Satomura: "Diurnal variations of precipitation,wind and convective activity in monsoon period over Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Herath.A.S.: "Large-scale hydrological modeling" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Hideki.Takizawa: "Seasonal variation of micrometeorological factors in the hill-ever-green forest" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Nobuhito.Ote: "Geographical variation in CO_2/H_2O exchange properties of forest canopy:observations and model applications" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Takehiko.Satomura: "Meso-scale atmospheric modeling" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Masakazu.Suzuki: "Temporal and spatial distribution of rainfall characteristics in Mae Chaem watershed,Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Kazuro.Nakane: "Water balance in Khwaenoi river basin,Thailand Natio.Res.Insti.for Earth Sci.& Disas.Preven." Proceeding '99 Workshop on GAME-T in Thailand. (In Printing). (1999)

[文献書誌] Dawen.Yang: "Hydrological modeling in Chao Phraya river basin incorporating reservoir operations" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)

[文献書誌] Teruyuki.Kato: "Estimation of water vapor based on GPS observation in Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)

[文献書誌] Toshiyuki.Nakaegawa: "Water vapor comparison between GPS and sonde observation in Thailand" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)

[文献書誌] Kinji.Furukawa: "Present Status of the TRMM" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)

[文献書誌] Katumi.Mushiake: "Comparison of precipitable water vapor retrieved from GPS observation with that from rawinsonde observation" Proceeding '99 Workshop on GAME-T in Thailand. (in printing). (1999)

[文献書誌] Jun.Matsumoto: "Large-scale features during the GAME IOP after the largest E1 Nino in this century" Proceedings Asian Pacific FRIEND and GAME Joint Workshop on ENSO Floods and Droughts in the 1990's in southeast Asia and the Pacific,Hanoi,Vietnam,March 1999. (in printing). (1999)

[文献書誌] Jun.Matsumoto: "GAME large-scale Monitoring for the Intensive Observation Period" Center for Climate System research,University of Tokyo(In Printing), (1999)

1998 年度実績報告書

虫明功臣東京大学, 生産技術研究所, 教授 (50011060)