the AWCI demonstration project 7th GEOSS AP Symposium, the AWCI - - PowerPoint PPT Presentation
The Huong River the nature, climate, hydro-meteorological issues and the AWCI demonstration project 7th GEOSS AP Symposium, the AWCI parallel session May 27, 2014, Tokyo National Centre for Hydro-Meteorological Dr.Dang Ngoc Tinh
The Huong River – the nature, climate, hydro-meteorological issues and the AWCI demonstration project
National Centre for Hydro-Meteorological Forecasting (NCHMF), NHMS of Vietnam Dr.Dang Ngoc Tinh
7th GEOSS AP Symposium, the AWCI parallel session May 27, 2014, Tokyo
Total area of the Huong basin is 2830km2, representing 56% of the total area of the Thua Thien Hue province. The river forms a central part of the economic and social development of the province , with many people depending on it for their livelihood.. With the area 22,000 ha, the Tam Giang-Cau Hai Lagoon is recognized as a particularly valuable asset and an important part of the life of its many users. The main issues associated with the Huong River Basi are flooding in the rainy season and saline water intrusion in the dry season.
Hydro-Meteorological Observation system
10 rain gauge stations and 6 water level measurement stations, some of local stations. In flood season available 6-hourly rainfall and water level data from these stations, report 4 times/day. In flood situation: 1-hourly data from these stations.. There is no water quality observation at these stations. Hydro-Meteorological Network in Thua Thien Hue Province
Runoff in flood season from October to December consists of 70 – 75% total annual runoff, while dry season lasting 9 months, including the period of early small floods in May – June, has only 25 – 30% total annual runoff
50 100 150 200 250 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec TaTrach River at ThuongNhat (1981-2007) HuuTrach River at BinhDien (1976-2007) Bo River at CoBi (1977-2007)
Observed monthly multi-years average discharge (m3/s)
In the dry season, there are 2 driest period: from March to April and from July to August. The lowest monthly flow is April.
20 40 60 80 100 120 140 160 180 Jan Feb Mar Apr May Jun Jul Aug Sep Ta Trach -Thuong Nhat Bo - Co Bi Huu Trach - Binh Dien
Monthly multi-year average runoff distribution in dry season on main rivers of the Huong river basin W (MCM)
At the present, to response to flooding and saline water intrusion, number of control structures
has been constructed as reservoirs like Co Bi, Ta Luong, Truoi, Ta Trach, Huu Trach, A Luoi as well as barriers to prevent saline water intrusion, the most notable of which is the Thao Long
A Luoi Reservoir
Spatial distribution of TRRM
3000-3500 mm/yr, Rainy season: Oct-Nov
Application of Satellite Data for the Vietnamese River Systems
Calibration of the DHM with satellite rainfall data at Kim Long St. – Huong River
400 800 1200 1600 10/1 10/7 10/13 10/19 10/25 10/31 11/6 2004 Streamflow [m
3/s]
Raingauge Observed TRMM HRM GPV
Application of Satellite Data for the Vietnamese River Systems 24-30 November Simulation
1000 2000 3000 4000 5000 6000 7000 23 24 25 26 27 28 29 30 Nov, 2004 Discharge [m
3/s]
Gauge Obs TRMM HRM-6hr GPV
Difference due to
Inundation
Application of Satellite Data for the Vietnamese River Systems
500 1000 1500 2000 2500 3000 3500 9/26 9/28 9/30 10/2 10/4 10/6 10/8 10/10 10/12
2006
m3/s
At Kim Long Station – Huong River (Sour: University of Tokyo)
Other activities of the Huong River Basin Demonstration Project
+ Joint Vietnam-Japan Workshops on Sustainable Water Management in
Hue city, Vietnam, March 9-10, 2009 and in Tokyo, 2012 + Finished data uploading, verified for period from 2004 to 2010 + Simulated hydrograph for period Oct. 9 – Nov.5, 2008 and forecasted hydrograph for period Aug. 21 – Sep.5, 2009 using distributed model GBHM (Geomorphology-based Hydrological Model – University of Tokyo) and High Resolution Model (HRM, Vietnam):
month to month, read HRM forecasted rainfall input file in ASCII format. + Improvement of warning flood forecasting system for the Huong river using DHM with satellite data and numerical weather forecasts, including reservoir operations. Dr. Oliver Saavedra and his team (Tokyo Institute of Technology + Climate change impact assessment to the Huong river water resources
Observed and forecast hydrographs at Kim Long station (10/9/2008 - 11/05/2008)
500 1000 1500 2000 2500 3000 3500 4000 4500 1 24 47 70 93 116 139 162 185 208 231 254 277 300 323 346 369 392 415 438 461 484 507 530 553 576 599 622 645 668 Observe Ob Rainfall Hrm Rainfall
Observed and forecast hydrographs at Kim Long station (08/21/2009 - 09/05/2009)
500 1000 1500 2000 2500 3000 3500 4000 1 7 13 19 25 31 37 43 49 55 61 67 73 79 85 91 97 103 109 115 121 127 133 139 145 151 157 163 forecast Observed
Highest 20 Rank of Daily Discharge
500 1000 1500 2000 2500 3000 3500 4000 4500 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Daily Discharge, m3/s Rank Qrank GFDL (1981-2000) Qrank GFDL (2046-2065) 500 1000 1500 2000 2500 3000 3500 4000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Daily Discharge, m3/s Rank Qrank GISS (1981-2000) Qrank GISS (2046-2065) 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Daily Discharge, m3/s Rank Qrank MIROC_H (1981- 2000) 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Daily Discharge, m3/s Rank Qrank MIROC_M (1981-2000) Qrank MIROC_M (2046-2065) 1000 2000 3000 4000 5000 6000 7000 8000 9000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Daily Discharge, m3/s Rank Qrank MIUB (1981-2000) Qrank MIUB (2046-2065)
Huong Preliminary Q Comparison 5 GCM Models from CMIP3
Average Daily Discharge for each month (Climatology)
100 200 300 400 500 600 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Daily Discharge, m3/s GFDL (1981- 2000) 100 200 300 400 500 600 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Daily Discharge, m3/s GISS (1981- 2000) 100 200 300 400 500 600 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Daily Discharge, m3/s MIROC_H (1981- 2000) 100 200 300 400 500 600 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Daily Discharge, m3/s MIROC_M (1981- 2000) 100 200 300 400 500 600 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Daily Discharge, m3/s MIUB (1981-2000) MIUB (2046-2065)