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HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
10 km
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
0
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1400
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0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00
Time
Dis
char
ge (m
3 /s)
0
100
200
300
400
500
600
700
800
900
1000
rain
fall
rate
(mm
/h)
rainfall rates CN=50 CN=70 CN=100 Measured discharges
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00
Time
Disc
harg
e (m
3 /s)
0
100
200
300
400
500
600
700
800
900
1000
Rai
nfal
l rat
es (m
m/h
)
rainfall rates CN=50 CN=70 CN=100 Measured discharges
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
0
50
100
150
200
250
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50
heures
débi
t en
m3 /s
020406080100120140160180200220240260280300320340360380400420440460480500
inte
nsité
mm
/h
S=250 mmS=100 mmS= 0 mmpluie
données reconstituées
Comparison between numerical simulations and observations
Dis
char
ge m
3/s
Time (hours)
Inte
nsity
(mm
/h)
Estimated values
rainfall
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
Measured rainfall amounts 12 and 13 November 1999
millimeters
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
Estimated Peak dischargeson the Verdouble watershed
0.23.5
9
68
3
7.81.5
20
20
2
5
15 15
3 Peak discharge m3/s/km2
1 km
HEPEX Workshop, Reading-ECMWF, 8-10 March 2004
ConclusionsSimulation requires understandingUnderstanding requires observation
A large database on the 2002 Gard event:http://www.enpc.fr/cereve/HomePages/gaume/gard02b.zip
