Second Stage of the Lake Biwa Project

琵琶湖二期工程

• 批准号: 10305037
• 负责人: NAKAKITA Eiichi
• 金额: $ 20.42万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10305037/
• 关键词: The Lake Biwa Project; Hydrological Surficial Process; Remote Sensing; Scale Effect; Water Circulation; Evapotranspiration; Soil Moisture; Campaign Observation

The Lake Biwa project is featured by "Campaign and Permanent Field Observations Synchronized with Space- and Air-borne Remote Sensing", "Collaboration by Scientists, Engineers and Agriculturists" and "the Goal as Understanding Hydrologic Circulation in the Lake Biwa Basin Using Hydrologic-Meteorological Combined Models Assimilated by the Field Observations". This project has been promoted about 20 groups from around Japan.In the second stage, we shifted weight from every-year campaign observation into permanent observation at four representative points. Operation of the permanent system in paddy field and forested area started in 1998 and in urban area and lake surface in 1999. According to this weight-shift to the permanent observation, we set "seasonal and year-to-year variation " and "vegetation phenology" as additional targets by effectively utilizing operational satellite information. Of course, for understanding the scale effect up to 20 km scale, tuning of model parameters and data assimilation are unchanged targets.At the site of the paddy field instruments for measuring or estimating radiation and heat budget and water budget based on Bowen ratio method were set up. Also photosynthesis active radiometer was set up in this April. Measurement in forested area is almost same as paddy field except for using SAT. Campaign observations for measuring LAI and heat pulse velocity has been carried out on typical days of each. Measurements at lake-surface and urban area sites are almost same except that basis is set on the bulk method. All data from these four sites are collected at office using mobile phone.

琵琶湖项目的特点是“与太空和机载遥感同步的活动和永久实地观测”、“科学家、工程师和农学家的合作”以及“目标是利用水文技术了解琵琶湖流域的水文环流”。现场观测同化的气象组合模型”。该项目已在日本全国约20个团体中得到推广。 第二阶段，我们将重点从每年的活动观察转向对四个代表点的长期观察。水田和林区的永久系统于1998年开始运行，城市地区和湖面的永久系统于1999年开始运行。根据这种向永久观测的重心转移，我们设定了“季节和逐年变化”和“植被”通过有效利用卫星信息，将“物候学”作为附加目标。当然，为了了解20公里尺度的尺度效应，模型参数的调整和数据同化是不变的目标。设置。今年4月还建立了光合作用主动辐射计。林区的测量与水田的测量几乎相同，只是使用SAT。测量 LAI 和热脉冲速度的活动观测已在每个典型日进行。湖面和城市地区的测量几乎相同，只是基础是采用整体方法。这四个站点的所有数据都是在办公室使用手机收集的。

项目成果

Kenii Tanaka, et. al: "Numerical Simulation of JSM-SiBUC Initialized and Externally Foeced by GAME Reanalysis Data"Proc. of International Workshop on GAME-AAN/Radiation. 39-41 (2001)

田中健二等。

戎 信宏: "NDVIを用いた山林地流域の蒸発散量推定"第2回水文過程のリモートセンシングに関するワークショップ論文集. 125-134 (2000)

Nobuhiro Ebisu：“利用 NDVI 估算山地森林盆地蒸散量”第二届水文过程遥感研讨会论文集 125-134 (2000)。

Ebisu Nobuhiro: "Estimating of Evapotranspiration Using UDVI at Forested Water shed"Proc. of 2nd workshop on Remote Sensing of Hydrological Processes & Applications. 125-134 (2000)

Ebisu Nobuhiro：“在森林流域使用 UDVI 估算蒸发蒸腾量”Proc。

中北 英一: "琵琶湖プロジェクト-琵琶湖流域の水・熱循環過程解明の取り組み-"水文・水資源学会誌. 第13巻6号. 429-438 (2000)

Eiichi Nakakita：“琵琶湖项目 - 阐明琵琶湖盆地的水和热循环过程的努力”日本水文水资源学会杂志，第 13 卷，第 6 期。429-438（2000 年）。

Kenji Tanaka, et al.: "Energy and Water Budget of Paddy Field in the Lake Biwa Basin, Japan"Proc.of International Workshop on GAME-AAN/Radiation. 55-58 (2001)

Kenji Tanaka 等人：“日本琵琶湖盆地稻田的能源和水收支”Proc.of International Workshop on GAME-AAN/Radiation。