EPPrePMex, A Real-time Rainfall Estimation System Based on GOES-IR Satellite Imagery
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Transcript of EPPrePMex, A Real-time Rainfall Estimation System Based on GOES-IR Satellite Imagery
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Jorge Sánchez-SesmaMarco Antonio Sosa Chiñas*
IPWG, October 2004, Monterey, California, USA
EPPrePMex, A Real-time Rainfall Estimation System Based on
GOES-IR Satellite Imagery
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Conclusions
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Introduction
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Theory and Techniques Georeference
(IR Brightness)-(Cloud Top Temperature) Relationship
The Convective and Stratiform Technique (CST)
Storm Localization and Assesment
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Georeference
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Georeference
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Relationship T-B
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Convective and Stratiform Technique (CST)
Detection of Convective, stratiform and cirrus clouds
Tmin < 253°K
For each convective storm its intensity, rC, is:
Over an area
WhereY
X
Z
rc
T
X
Ac
rC = rC0 - rC1 TC
Tc) - A(AC
CC = e A 10
KTTTTTKTT
TMINCMINCMIN
MINMINC 200si)(
200si
01
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Convective and Stratiform Technique (CST)(Storm radius)-(Cloud top temperature) A Relationship for Mexico
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Implementation Algorithm
Images
Products
Webpage
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Operational Results: Pseudo-imagery
A:IR Images B:Intensity P-Image C:Acumulated P-Image
CBA
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Operational Results : Numerical Reports
For basins and sites Lluvia acumulada promedio de 10051503.ACU en las regiones de cuencas.polRegión Promedio Millones de m3Lerma - Santiago 1.661 226.489Balsas 7.625 899.673Guerrero - Costa 1.416 19.776Pinotepa 21.165 822.995Huatulco 20.368 225.329Tehuantepec 29.847 488.984Chiapas - Pacífico 2.248 27.191Zacatecas - Nuevo León - San Luis Potosí 0.054 4.850Tamaulipas 0.000 0.000Huasteca 10.020 972.349Pánuco 40.112 1081.230Papaloapan 42.953 2510.730Istmo - Golfo 11.258 331.346Grijalva 1.463 150.828Campeche 0.052 1.276
..
Promedio en la proximidad de puntos, tomado de 10051503.ACUDistancia para promedio: 7Nombre Long. Lat. Prom. Centro Min. Max...#1022 VER Jalapa -96.920 19.550 39.50 34.00 30.75 45.00#1023 VER La Cangrejera -94.900 17.980 17.08 28.25 8.12 29.25#1024 VER La Joya -97.620 20.560 34.41 39.25 15.25 39.25#1025 VER Las Perlas -94.650 17.770 0.56 1.00 0.00 1.00#1026 VER Los Hules -98.270 21.160 17.97 15.62 15.62 21.38#1027 VER Martinez De La Torre -97.050 20.067 70.81 70.62 70.62 71.12#1028 VER Mizantla -96.970 20.170 71.94 72.00 71.00 72.62#1029 VER Minzapan -96.890 20.000 71.92 72.25 71.38 72.38#1030 VER Rio Grande -94.370 17.280 3.22 3.25 3.12 3.25#1031 VER Orizaba -97.100 18.850 21.92 21.62 13.50 28.12#1032 VER Oxtlapa -97.100 19.350 33.47 24.62 14.25 45.88#1033 VER Panuco -98.170 20.510 29.07 32.50 24.25 33.25..
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Graphical Binnacle A graphical binnacle displays the processed images. Each dot indicate
a processed image and its size indicates the number of storms.
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Web page
A web page was designed and instaled in the same server nimbus, in which EPPrePMex is running in IMTA´s Offices.
Its adress is http://nimbus.imta.mx
It is working since the summer 1999.
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Evaluation NOAA comparison 1998-1999
Site comparison 1997-2002
Basin comparison 1997-2002
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Evaluation
In 1998 the NOAA has made a comparison of estimated (Autoestimator and EPPrePMex) and measured daily accumulated rainfalls for Southern Texas
Estimación de Precipitación con Satélite
TEXAS, 18-Oct-1998, 24 hr.
y = 0.9743x + 50.754R2 = 0.4983
y = 0.7233x + 36.494R2 = 0.6174
0
100
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0 100 200 300 400 500 600
Medición (mm)
Estim
ació
n co
n Sa
télit
e, p
rom
edio
de
9 pi
x (m
m)
MejorAutoEstimatorEPPrePMexLineal (AutoEstimator)Lineal (EPPrePMex)
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Evaluation
Correlation between EPPrePMex estimations & RFCwide stations measurements of daily rainfall for July-Oct 1999
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Evaluation
Correlation between EPPrePMex estimations & NW Mexico stations measurements of daily rainfall for July-Oct 1998
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Rainfall measurementsmade by the operational hydrological network
Evaluation
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Measured (gage) Estimated (GOES satellite)
Evaluation
A B
A’ B’
INCOMPATIBLE
COMPATIBLE
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Evaluation
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Evaluation
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Evaluation
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Evaluation (Bias correction)
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Evaluation
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Present Research Operational rainfall estimation based of GOES-12 and GOES-10, radars and
weather stations
Real-time Calibration of rainfall estimation with satellites and radar
Detection and analysis of MCC
Clasification of storms
Calibration of GOES based estimation with other satellites (Tiros, SSMI, TRMM, Acqua, etc).
Integration with modern (distributed) hydrological models (MIT and others)
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GOES-12 complemented with GOES-10
During eclipses GOES-10 imagery will complement GOES-12.
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GOES-12 complemented with Radar
Rainfall Intensity (Radar)
6 hour animation: 17:45 a 23:45 Z
Accumulated Rainfall (Satellite)3 hours:
18:00 a 21:00 Z
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Storm Development Stage
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Clasification of Storms
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Conclusions
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The End
¡Thank you very much!