INTEGRATED STUDY ON WATER/ENERGY/MATERIAL CYCLE PROCESSES INCLUDING SNOW SEASON-LAKE BIWA PROJECT 4TH STAGE-

水/能量/物质循环过程综合研究，包括雪季-琵琶湖项目第四阶段-

• 批准号: 16360244
• 负责人: TANAKA Kenji
• 金额: $ 9.28万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360244/
• 关键词: snow process; land-atmosphere interaction; land data assimilation; sort-range rainfall forecast; energy; water balance; surface heating; soil moisture; non-hydrostatic meteorological model; 人工排熱; CReSiBUC; 土壌凍結・融解; 連続観測; ARPS-SiBUC; 短時間予測

To start the cold season's hydrological processes which have not been a target of the Lake Biwa Project since 1992, new observation system was established in Yogo mountain area, the origin of Yodo River Basin. To understand the snow accumulation and melting processes in the heavy snow area in temperate climate zone, snow depth and related meteorological elements are observed.Through various kinds of numerical experiments by nonhydrostatic meteorological models (ARPS-SiBUC, CReSiBUC), impacts of surface heating and soil moisture status for the formation of convective rain were investigated. The difference in the initial soil moisture distribution within realistic variation range does influence the location and intensity of rainfall. This result suggests the importance of day-to-day variation of soil moisture in short-range numerical weather prediction.In this study, land surface state (e.g. soil moisture and snow water equivalent) is estimated using land surface model SiBUC for the most part of Japan (excluding Okinawa). The atmospheric forcing data for SiBUC is created using operational meteorological data provided by JMA (e.g. AMeDAS, surface weather observation). This land reanalysis was carried out for 18 years (from 1991 to 2008) with about 10km horizontal resolution. The time series and horizontal distribution of snow water equivalent are compared with observation and other model product.

为了启动1992年以来琵琶湖工程没有涉及的寒冷季节水文过程，在有多河流域的起源约哥山区建立了新的观测系统。为了了解温带地区大雪区的积雪和融化过程，对雪深和相关气象要素进行了观测。通过非水静力气象模式（ARPS-SiBUC、CReSiBUC）的多种数值试验，研究了地表加热和土壤水分状况对对流雨形成的影响。土壤初始水分分布在实际变化范围内的差异确实会影响降雨的位置和强度。这表明土壤湿度日变化在短期数值天气预报中的重要性。在本研究中，使用SiBUC陆地表面模型估算了日本大部分地区（不包括冲绳）的陆地表面状态（如土壤湿度和雪水当量）。SiBUC的大气强迫资料是利用日本气象厅提供的业务气象资料（例如AMeDAS、地面天气观测）编制的。从1991年到2008年进行了18年的土地再分析，水平分辨率约为10km。将雪水当量的时间序列和水平分布与观测和其他模式产品进行了比较。

项目成果

Coupling a mosaic land surface scheme(SiBUC)with a nonhydrostatic atmospheric model(ARPS)

马赛克陆地表面方案（SiBUC）与非静水大气模型（ARPS）的耦合

• 发表时间: 2005
• 期刊: Proc. of 85th AMS Annual Meeting, 19th conference of Hydrology
• 作者: Souma,K.;K.Tanaka;E.Nakakita;S.Ikebuchi
• 通讯作者: S.Ikebuchi

The Effect of Land Surface Condition on Convective Precipitation over the Mountainous Region around the Lake Biwa in Japan during the Summer Season(in Japanese)

夏季地表状况对日本琵琶湖周边山区对流降水的影响

• 发表时间: 2005
• 期刊: Annuals of Disas.Prev.Res.Inst., Kyoto Univ. No.48B
• 作者: Souma;K.;K.Tanaka;E.Nakakita;S.Ikebuchi
• 通讯作者: S.Ikebuchi

Effect of Soil Moisture in Dynamical Downscaling with Meso-scale Numerical Weather Prediction Model(in Japanese)

土壤湿度对中尺度数值天气预报模型动态降尺度的影响（日语）

• 发表时间: 2009
• 期刊: Proc.of Soil Moisture Workshop 2009
• 作者: Tanaka;K.;K.Souma;T.Fujii;M.Yamauchi
• 通讯作者: M.Yamauchi

Hffect of the LDAS Derived Realistic Distribution of Soil Moisture on a Summertime Heat Thunderstorm Prediction in Japan

LDAS 导出的土壤湿度现实分布对日本夏季高温雷暴预报的影响

• 发表时间: 2008
• 期刊: Proc. of 4th Intl. Conf. on Water Resources and Environment Research
• 作者: Souma,K.;K.Tanaka;E.Nakakita;S.Ikebuchi;他
• 通讯作者: 他

都市環境が都市型集中豪雨に及ぼす影響の評価

城市环境对城市局地暴雨影响评价

• 发表时间: 2007
• 期刊: 京都大学防災研究所年報 50
• 作者: 伊藤洋太郎;茂木耕作;相馬一義;萬和明;田中賢治;池淵周一
• 通讯作者: 池淵周一