weiming sha and guixing chen tohoku university, japan 1st mahasri/amy ws yokohama/tokyo, 2007.1.8-10...
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![Page 1: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/1.jpg)
Weiming Sha and Guixing ChenWeiming Sha and Guixing ChenTohoku University,Tohoku University, JapanJapan
1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10
Study on Monsoon Onset in South China (Huanan area) with a High-resolution Regional
Weather Forecast Model System
![Page 2: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/2.jpg)
Beginning dateBeginning dateof rainy seasonof rainy season
(a) subtropical monsoon onset; (b) after tropical monsoon onset(Chen et al, Cli. Envi. Res., 2000)
month pentad
AugJulJunMayApr
![Page 3: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/3.jpg)
Heavy flood over South China in June 2005Heavy flood over South China in June 2005
AWS accumulative precipitation(mm) AWS accumulative precipitation(mm) during 17~26 Jun, 2005during 17~26 Jun, 2005
![Page 4: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/4.jpg)
Diurnal variation of the rainfall in coastal regionDiurnal variation of the rainfall in coastal region (mm/hr.)(mm/hr.)
![Page 5: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/5.jpg)
Target/TaskTarget/Task
Monsoon onset events in South China (Huanan area)
Modeling, Understanding & Prediction
![Page 6: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/6.jpg)
DSDS3:: a ‘small’ JMAa ‘small’ JMA JMA DS3
Model/Resolution Global model ( dx=40km ) NHM model (dx=15km→4km→1km) Regional model ( dx=20km ) Coupled with Meso model ( dx=5km ) CFD ・ LES model (dx ~100m )
Its name is ・・・
DS3 = Down Scaling Simulation System
We are building up and testing A high-resolution regional weather forecast model
system
![Page 7: Weiming Sha and Guixing Chen Tohoku University, Japan 1st MAHASRI/AMY WS Yokohama/Tokyo, 2007.1.8-10 Study on Monsoon Onset in South China (Huanan area)](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d4d5503460f94a2b5d3/html5/thumbnails/7.jpg)
*Modeling and validation of the monsoon onset events, diurnal variation of the rainfall in Huanan area, South China (on going,,,)
Next …
*Understanding its mechanism and prediction