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II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Goddard Space Flight Center & Federal University of Vicosa – UFVNOAA – National Environmental Satellite, Data, and Information Service - NESDIS
REAL TIME SATELLITE RAINFALL REAL TIME SATELLITE RAINFALL ESTIMATION OVER THE ESTIMATION OVER THE AMAZON REGION FOR AMAZON REGION FOR
HYDROLOGICAL APPLICATIONSHYDROLOGICAL APPLICATIONS
Gilberto A. Vicente Gilberto A. Vicente Marcos H. CostaMarcos H. Costa
Daniel VilaDaniel Vila
II International LBA Scientific Conference
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Rainfall estimationRainfall estimation
Temporal resolution
Hourly Daily Weekly Monthly Seasonally Yearly
Methods
Rain gauges Radar Satellites Models
Spatial resolution
4 km ¼ degree ½ degree 1 degree 2.5 degrees
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Satellite rainfall estimationSatellite rainfall estimation
Radar – Low resolution PR (TRMM) – “twice daily”
IR-Vis Sensor - High resolution 11 m channel GOES-8 – every ½ hour
MW Radiometer - Low resolution SSMI (DMSP) – twice daily TMI (TRMM) – twice daily
DIRECT INDIRECT
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Project earlier objectivesProject earlier objectives
Provide continous real time satellite
rainfall estimation over Amazonia
1-hour average every hour
3-hour, 6-hour totals every hour
24-hour accumulation once a day
Resolution: 4 Km by 4 Km
Ease and free products access to users
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Autoestimator (Hydro-estimator)Autoestimator (Hydro-estimator) Operational Algorithm for Flash Flood Applications Time frame: 0 to 6 hours How much ??? Where ??? Http://hpssd1en.wwb.noaa.gov
Extension of the NOAA/NESDIS AutoEstimator Extension of the NOAA/NESDIS AutoEstimator Rainfall Estimation to South AmericaRainfall Estimation to South America
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Autoestimator descriptionAutoestimator description
Cloud top temperature Cloud top growth rate Cloud top temperature gradient Precipitable water Relative Humidity Wind speed and direction Orographic correction
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Independent building block conceptIndependent building block concept
Rain F (IR) TemperatureTemperature
gradientgradient
Growth Growth
raterate
Wind vector & OrographWind vector & Orograph
Precipitable Water Precipitable Water Relative HumidityRelative Humidity
Parallax correctionParallax correction
VISIBLEVISIBLE
Manual adjustmentsManual adjustments
Ground Info.Ground Info.
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 9/1/98 0605ZHEADLINE...FF POTENTIAL HAS SHIFTED TO WESTERN ARIZONA FOR THE NEXT 1-3HRS.
AUTOMATIC ESTIMATES... 0230-0530ZW ARIZONA COUNTIES... NORTHERN LAPAZ 2.4" SOUTHERN MOHAVE 1.8"
Example of the technique application over the US
REMARKS...ISOLATED CELL MOVING ACROSS SOUTHERN MOHAVE WITH AUTO ESTIMATES AS MUCH AS 1.8"/HR. EXPECT CELL TO CONTINUE TO THE EAST NORTHEAST FOR THE NEXT FEW HOURS. AUTOESTIMATES LOOK REASOSABLE. WILL CONTINUE TO MONITOR.
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Auto-Estimator application for flash flood: HURRICANE MITCH
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Rainfall products available in real-timeRainfall products available in real-timehttp://orbit-net.nesdis.noaa.gov/arad/ht/ff/gilberto.html
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Easy data distribution in GRADS formatEasy data distribution in GRADS format Available every hour for a day
1-hour 3-hour 6-hour
Available once a day and archived since 1999 24-hour
ftp://orbit35i.nesdis.noaa.gov/pub/arad/ht/gilberto/BSL/
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Centro de Predicción Numérica del Tiempo y Clima - Perú
http://www.met.igp.gob.pe/
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
User exampleUser example Date: Tue, 20 Apr 1999 16:00:09 -0300
From: "Ricardo d´Orsi" <[email protected]>
Subject: flash flood no Rio de Janeiro
“ Com o sucesso da operacao do Alerta Rio (inaugurado no final do ano de 1996), fomos solicitados a emitir alertas de inundacoes (flash floods), … Dentre os diversos web-sites com informacoes meteorologicas utilizadas pela nossa equipe, o site
http://orbit-net.nesdis.noaa.gov/arad/ht/ff/gilberto.htm
tem sido de grande ajuda para nos.”
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
User exampleUser example
From: José Luís Moraes Ribeiro [mailto:[email protected]]Sent: Thursday, October 19, 2000 10:45 AM
“Somos uma compania exportadora de café no interior do estado de São Paulo na cidade de Espirito Santo do Pinhal.Trabalhamos muito diretamente com o produtor e as estiagens do ano passado e a das ultimas duas semanas tem influenciado muito as cotaçoes mundias do produto. Com seu trabalho podemos ter as informaçoes precisas das regiões que recebem mais ou menos chuvas.”
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
User example - Case study: Argentina/BrazilUser example - Case study: Argentina/Brazil
Daniel A. Vila - Sistema de Alerta Hidrológico de la Cuenca del Plata Instituto Nacional del Agua y del Ambiente (INA)
- 5 8 - 5 7 - 5 6 - 5 5 - 5 4 - 5 3
L ON GIT U D
- 3 2
- 3 1
- 3 0
- 2 9
- 2 8
LAT
ITU
DP asso S anta M aria
Rosario do S ul
M anoel Viana
Alegrete
P asso M ariano P into
LONGITUD
LATITUD
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Validation - Case study: Argentina/Brazil/UruguayValidation - Case study: Argentina/Brazil/Uruguay
Daniel A. Vila - Sistema de Alerta Hidrológico de la Cuenca del Plata Instituto Nacional del Agua y del Ambiente (INA)
Rainfall satellite estimation for Salto Grande Dam region 21-22 May 2001
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Validation - Case study: Argentina/Brazil/UruguayValidation - Case study: Argentina/Brazil/Uruguay
Rainfall satellite estimation for Salto Grande Dam region - 21-22 May 2001
(mm) NUM BIAS (mm) CORR RMSE (mm) POD FAR SKILL
0 - 7 375 -6.60 0.82 12.00 0.95 0 0.77 7 - 26 338 -7.24 0.77 12.63 0.85 0.01 0.79 26 - 52 204 -8.48 0.59 14.57 0.55 0.12 0.83 52 - Hi 30 -21.53 0.80 24.55 0.33 0 0.76
WTAVG 2107 -9.33 0.71 14.63 0.69 0.05 0.80
(mm) NUM BIAS (mm) CORR RMSE (mm) POD FAR SKILL
0 - 7 321 -9.21 0.93 24.1 1.00 0.03 0.84 7 - 26 313 -9.49 0.92 24.4 0.92 0.06 0.86 26 - 52 210 -14.38 0.87 29.64 0.89 0.06 0.86 52 - Hi 145 -17.25 0.76 34.47 0.93 0.08 0.88
WTAVG 2947 -13.91 0.85 29.82 0.93 0.07 0.86 Rainfall satellite estimation for Salto Grande Dam region - 31 May / 1 June 2001
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Validation - Case study: Argentina/Brazil/UruguayValidation - Case study: Argentina/Brazil/Uruguay
0
50
100
150
200
250
0 50 100 150 200 250
observed - (mm)
bes
t ad
just
ed e
stim
atio
n (
MV
E)
- (m
m)
Observed (mm)
Est
imate
d (
mm
)
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Satellite data/products Satellite data/products
andand globalizationglobalizationThe Corporate ApproachThe Corporate Approach
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
TRMM Online AnalysesTRMM Online Analyses
NASA/GSFC – Distributed Active Archive Centerhttp://daac.gsfc.nasa.gov/
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
TRMM Accumulated RainfallTRMM Accumulated Rainfall
Area Plot Time Plot
TRMM Online data analyses
http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/trmm_online_analysis/
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
TRMM Rainfall RateTRMM Rainfall Rate
Area Plot Time Plot
TRMM Online data analyses
http://daac.gsfc.nasa.gov/CAMPAIGN_DOCS/trmm_online_analysis/
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
GPCP Multisat ProductGPCP Multisat ProductGlobal Precipitation Climatology Centre (GPCC)
Access to online Global precipitation analyses tools
http://www.dwd.de/research/gpcc/visualizer/visualizer.html
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
GPCC/GPCP Multisat ProductGPCC/GPCP Multisat Product
VariousFormats:
ASCIIARCVIEW GridGIFPOSTCRIPTPNG
http://www.dwd.de/research/gpcc/visualizer/visualizer.html
Arcview
ASCII
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Give up ownership: Open source SW
System independence: JAVA
WEB based: Free data and SW distribution
GIS: Make rain estimation one more layer of information
WEB – GIS based
Data integration and interoperabilityData integration and interoperability
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
GIS: A tool to connect Hydrology and Meteorology
Land use (polygon)
Soil Type (polygon)
Gage Station (point)
Stream (line)
Watershed (polygon)
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
ConclusionConclusion Purpose: Create a system to provide continuous
and reliable real-time satellite rainfall rate products to LBA users
Make the products quick and easily accessible through open source software
Provide users with information about other satellite rainfall rate products
http://orbit-net.nesdis.noaa.gov/arad/ht/ff/gilberto.htm
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Backup SlidesBackup Slides
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
In progressIn progress
Continue with data generation and delivery Assist users in the search and use of other
rainfall data products Validation effort Technique calibration Parallax correction Comparative study Student orientation
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
COMPUTE SATELLITE RAINFALL RATE IN 1 X 1
DEGREE GRID
-10% < ERROR < +10%
ERROR < -10% ERROR = satellite - ground ERROR > +10%
T = T - 1 T = T + 1
EXIT
Auto-Estimator real-time adjustments with ground informationAuto-Estimator real-time adjustments with ground information
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
same rainfall
rate
h1 h2h
low PW1
low RH1
same cloud top
temperature
high PW2
high RH2
PW2 x RH2 > PW1 x
RH1
GROWTHRATEand
GRADIENTcorrection
s
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Rainfall Contrasts on windward and leeward slopes
OROGRAPHIC CORRECTION
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Orographic correction: wind x height
Estimates with orographic correction Estimates without orographic correction
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
Actual Actual Cloud Cloud PositioPositio
nn
Apparent Apparent Cloud Cloud
PositionPosition
SatelliteSatelliteLine-of-Sight Line-of-Sight
Parallax correction
II International LBA Scientific Conference – Gilberto Vicente, 07/02, Manaus
PARALLAX
CORRECTION