Real-time Flood Forecasting in China Using TOPKAPI International Symposium on Distributed Hydrological Modelling To mark the 70th birthday of Prof. Ezio Todini Real-time Flood Forecasting in China Using TOPKAPI Cinzia Mazzetti ProGeA Srl, Bologna, Italy (cinzia.mazzetti@progea.net)
GREETINGS FROM A COUPLE OF FRIENDS IN CHINA… Dr. LIU Zhiyu Dr. LU Feng Vice-president of the Commission for Hydrology at WMO Deputy Chief Engineer and Professor of Hydrology and Water Resources at the Bureau of Hydrology, Ministry of Water Resources,PR China Chief Engineer, Department of Water Resources, Zhejiang Province, P.R. China www.progea.net
WHERE TOPKAPI model runs inside operational real-time flood forecasting systems in Henan and Zhejiang Provinces. www.progea.net
YELLOW RIVER (HUANG HE) 黄河 Client Yellow River Conservancy Commission, Henan Province, PRC TOPKAPI model area 41’605 Km2 TOPKAPI cells size 1000 m Real-time flood forecasting system EFFORTS Year of installation 2008 Calibration period 1996 - 2005 Simulation time step 1 hour Meteorological model MM5 Forecasting horizon 48 hours Computation time (72 hours) 40 sec Status Running autonomously www.progea.net
FUCHUN RIVER (QIANTANG JIANG) 钱塘江 Client Bureau of Hydrology, Zhejiang Province, PRC TOPKAPI model area 26’142 Km2 TOPKAPI cells size 1000 m Real-time flood forecasting system EFFORTS Year of installation 2011 Calibration period 1992 - 2009 Simulation time step 1 hour Meteorological model JMA GSM Forecasting horizon 48 hours Computation time (72 hours) 30 sec Status Running with maintenance www.progea.net
TOPKAPI MODEL CALIBRATION ON FUCHUN RIVER RAINFALL DATA (1992 - 2009) 61 rain-gauges 1 hour time steps Data interpolation using ISD method Rainfall maps resolution 2000 m SOME PROBLEMS… Different time steps resolution between seasons and during events (daily) A lot of missing data No distinction between missing data and no rainfall No data validation TEMPERATURE DATA (1992 - 2009) 7 gauges Rain-gauges location on Fuchun catchment 1 hour time steps Data interpolation using ISD method Temperature maps resolution 2000 m www.progea.net
DISCHARGE DATA (1992 - 2009) SOME PROBLEMS… www.progea.net 11 gauges 1 hour time steps Xinanjiang reservoir China’s first hydropower station (construction started in 1956). The first dam constructed in China with a height greater than 100 m. The Qiandao lake covers an area of 573 km² and has a storage capacity of 17.8 km3. SOME PROBLEMS… Discharge is often not measured during non-flood season A lot of missing data Daily data during non-flood season and smaller events Rating curves can change very rapidly No data validation A lot of very large reservoirs www.progea.net
SOIL TYPES MAP LAND USE MAP www.progea.net FAO soil types map Modified soil types map SOIL TYPES MAP FAO soil types map 6 different soil types Very few information LAND USE MAP AVHRR map 13 different land uses Sub-tropical climate www.progea.net
SOME RESULTS FROM THE CALIBRATION PERIOD QUZHOU CATCHMENT (Area 5539 km2) www.progea.net
SOME RESULTS FROM THE CALIBRATION PERIOD JINHUA CATCHMENT (Area 5967 km2) www.progea.net
SOME RESULTS FROM THE CALIBRATION PERIOD LANXI CATCHMENT (Area 18329 km2) www.progea.net
RESULTS FROM THE REAL-TIME SYSTEM (12-23 June 2011)
Quzhou
2011-06-20 00:00 2011-06-19 12:00 2011-06-19 09:00 2011-06-19 06:00
6 hours in advance www.progea.net
12 hours in advance www.progea.net
24 hours in advance www.progea.net
Jinhua
2011-06-19 18:00 2011-06-20 00:00 2011-06-19 15:00 2011-06-19 12:00 2011-06-19 09:00
6 hours in advance www.progea.net
12 hours in advance www.progea.net
24 hours in advance www.progea.net
CONCLUSIONS OF THE «TOPKAPI EXPERIENCE» IN CHINA Going operational 8’000 Km from home requires a robust and very reliable model Research innovations need to confront with data availability Culture and background of clients cannot be ignored Training is a fundamental part of the job www.progea.net
Thank you for your attention. PROGEA srl - Via Santo Stefano 6- 40125 Bologna - ITALY Phone: +39 051 6389099 Email: segreteria@progea.net www.progea.net