2006/05/15 thanh ngo-duc page 1 lab meeting contents mm5-mse (mm5 - mainland south east asia)...
TRANSCRIPT
2006/05/15
Thanh NGO-DUC Page 1
Lab meeting Contents
• MM5-MSE (MM5 - Mainland South East Asia) 72-hour forecast – MM5
– Couple to TRIP
• GSWP2 storage
• GRACE paper submitted to WWR in Feb. 2006: major revision
2006/05/15
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Lab meeting MM5-MSA
MM5NOAH LSM
Real-time data forecast fields
TRIPor TRIP with reservoirs
Runoff+drainage
flood forecast2 domains: D01 ~ 72 km,D02 ~ 24 km
http://hydro.iis.u-tokyo.ac.jp/~thanh/MM5/
• run once per day, at 3a.m.• download boundary data from NCEP: ~35 minutes • running time for 72-h forecast: ~ 30 minutes (shui, 1 processor)• available online
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Lab meeting MM5-MSA
From satellite on May 13rd
MM5, 72h from 12h GMT May 14thChanchu storm
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Lab meeting MM5-MSA
• Next steps: couple MM5-MSA with TRIP- Flow velocity: actually 0.5 m/s in TRIP, maybe good enough for
modeling at monthly timescale. But to do flood forecast, more realistic representation of flow velocity should be taken into account ! ???
- Use the routing map from Hydro1k
Surface runoff underground runoff
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Lab meeting MM5-MSA
How to simulate river flow velocity?(Schulze et al., Advances in Geosciences, 2005; Oki et al., Hydrological Sciences, 2001)
• Manning equation:
2/13/21 SRnv n: river bed roughnessR: hydraulic radiusS: river slope
WD
WDR
2
Assuming river bed is shaped as a rectangle
D: river depthW: river width
Allen et al., Water Resources Bulletin, 1994
341.0
557.0
349.0
71.2
b
b
QD
QW
Qb: bankfull discharge
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Lab meeting GSWP2 – land water storage
• The second Global Soil Wetness Project (GSWP-2): compare and evaluate 10-year simulations by 13 LSMs
• Simulations are in “offline mode” at a 1°×1° resolution, spanning the years 1986-1995.
GSWP2 outputs
TRIP
land water storage
SSTTopex-Poseidon
Ocean heat
ocean variability
analyze relationships?
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Lab meeting GSWP2 – land water storage
ORCHIDEE – Thermosteric sea level (Ngo-Duc et al., GRL, 2005)
Decadal scale
? Validate? Interannual scale
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Thanh NGO-DUC Page 8
Lab meeting GSWP2 – land water storage
Thank you for your attention