This international workshop was dedicated to Satellite Rainfall Products Validation and applications , with a focus on Tropical regions. The executive summary is available here .
The discussions focus on two key questions of special relevance for satellite rainfall users and developpers in the Tropics :
How well can we evaluate Satellite Rainfall products and the associated errors in regions with scarce rain gauges networks ?
How do rainfall uncertainties propagate in Hydrological applications and the water budget ?
More detailed topics below :
Direct Validation – assessment of GV uncertainties
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Direct validation from
- rain gauges,
- weather radar
- alternative rainfall measurement (microwave llinks etc.)
- Ground truth uncertainties / Impact on apparent product performances
- Scale and Sampling issues
- Dealing with intermittency – validation of rain/ no rain mask.
- Conceptual / empirical error models for satellite and ground rainfall products
Hydrological Validation – Rainfall error propagation
- Indirect or hydrological validation techniques (use of basin outflow or other water budget studies )
- Cross-validation studies using measured soil moisture , water levels etc.
- hydrological validation : practical exemple
- Analyzing and quantifying Hydrological models sensitivity to satellite rainfall bias and uncertainty.
- Rain error propagation in Hydrological water budget
Preliminary results from Megha-Tropiques Validation activities
- Preliminary diagnostic of BRAIN instant rain rate retrieval using tropical weather radar
- TAPEER daily accumulations performances within the inter-tropical zone
- Zoom on West African Super site results
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Wednesday, September 25, 2013 |
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Welcome; Megha-Tropiques: Rainfall objectives ; A few random thoughts about rain retrieval from satellite data and its validation – Roca / Viltard / Gosset |
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Coffee break |
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OVERVIEW : Sources of Uncertainty in Rainfall retrieval from Satellite – Ziad Haddad |
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Validating/Improving Instant Rain rate Retrievals |
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A research framework to evaluate Level 2 active and passive rainfall products using ground radar-bas. – Pierre-Emmanuel Kirstetter, University of Oklahoma / National Severe Storm Laboratory |
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Improving the instantaneous vertical profiling of precipitation using ground based radar measuremen – Sahra Kacimi, Jet Propulsion Laboratory |
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Algorithm Validation in the Megha-Tropiques Framework: An Attempt to Improve the Microphysic Parame – Audrey Martini, Laboratoire Atmosphères, Milieux, Observations Spatiales |
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Satellite Rainfall Retrievals during CHUVA-GLM Experiment: Rainfall Retrievals and Life Cycle Consi – Daniel Vila, Centro de Previsão de Tempo e Estudos Climáticos, Cooperative Institute for Climate and Satellites |
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Lunch (on site buffet) |
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Validating/Improving Instant Rain rate Retrievals |
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Getting quantitative information on icy hydrometeors contributing to mw scattering from radar – Frédéric Cazenave, Laboratoire d’étude des transferts en hydrologie et environnement |
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Comparison of Rain rates and rain classification from MT BRAIN retrievals over several operationnal – Matias Alcoba, GET, Toulouse et al. |
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Evaluation of the precipitating convective systems over the Arabian Peninsula using Megha-Tropiques – Paul Kucera, National Center for Atmospheric Research |
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Tropical convective systems life cycle characteristics from geostationary satellite and …. – Thomas Fiolleau, Centro Nacional de Monitoramento e Alertas de Desastres Naturais |
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Break |
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OVERVIEW : Scaling properties of Rainfall – Venugopal |
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scale issues – sampling – tbd |
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Scale-related artefacts on precipitation measurement: why they impact satellite rainfall estimation – Sebastien Verrier, Université Versailles St Quentin/LATMOS, LOCEAN/UPMC/IPSL |
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Simulation of rain time series with zero rainfall and actual statistical distribution in a Universal – Nawal AKROUR, latmos |
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Stochastic simulation of high resolution rain fields: application to assess gauge-based rainfall …- Theo Vischel, Laboratoire d’étude des transferts en hydrologie et environnement |
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Rainfall fields estimation by data fusion based on a variational 4DVAR assimilation technic….- Francois MERCIER, Univ. Versailles St Quentin / LATMOS |
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Thursday, September 26, 2013 |
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OVERVIEW : The Uncertainty Model for the TAPEER daily rainfall estimates – Philippe Chambon |
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direct validation and ground truth uncertainty |
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analytical/conceptual models for the satelite products : an example from the MT Water Vapor product – ramses sivira, Institut Pierre-Simon-Laplace |
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How to account for uncertainties when assessing rainfall products by direct comparison with gauges – Clément GUILLOTEAU, Géosciences Environnement Toulouse |
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Rain-gage based rainfall products for the MT ground validation in West Africa – Guillaume Quantin, Laboratoire de Physique Théorique et Modèles Statistiques |
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Coffee break |
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direct validation and ground truth uncertainty |
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Direct Validation of Satellite Based Rainfall Estimates against Ground Based Observations from Rain – Elena Tarnavsky, University of Reading |
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Elucidating Errors and Uncertainties Through Deconstruction of Precipitation Products – Chriss Kidd, Earth System Science Interdisciplinary Center |
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Satellite Rainfall Validation Activities over South America – Daniel Vila, Centro de Previsão de Tempo e Estudos Climáticos, Cooperative Institute for Climate and Satellites |
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OVERVIEW : Using Satellite Rainfall for Flood Modeling in Mountainous Basins – Manos Anagnostou |
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Lunch ( on site buffet) |
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hydrological applications – Rainfall error propagation |
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Potential of MT rain Products for flood prediction in the Tropics – claire casse, Géosciences Environnement Toulouse |
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Some needs for a regional flood forecasting in West Africa, Abdou Ali, Agrhymet |
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Sensitivity of the hydrological model DHSVM to rainfall forcing: application to the Ouémé catchment – Theo Vischel, Laboratoire d’étude des transferts en hydrologie et environnement |
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A preliminary study on Variational Data Assimilation for the control of rainfall overthe Ouémé river (Benin) – houda yahi, marielle Gosset, Cristophe Peugeot, Sylvie Thiria, Serge Janicot |
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Sensitivity studies of the Hydrological Models response to Satellite based rainfall forcing in Benin – Christophe Peugeot, HydroSciences Montpellier – et al. |
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OVERVIEW : Uncertainties in measuring Surface Moisture and closing the Continental Water from space – ahmad Al Bitar |
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Water Cycle – Cross validations – other land surface appl |
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Correcting Satellite Based Precipitation Products Using SMOS Measurement- Thierry Pellarin, Laboratoire d’étude des transferts en hydrologie et environnement |
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How satellite rainfall estimate errors may impact rainfed cereal yield simulation in West Africa. – Johanna Ramarohetra, Laboratoire d’Océanographie et du Climat : Expérimentations et Approches Numériques |
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Coffee break |
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GROUP DISCUSSIONS uncertainties and validation methods / Error propagation |
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Cocktail reception Toulouse Town Hall – Reception par le Maire de Toulouse |
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Friday, September 27, 2013 |
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Other Ground Validation activities and data sets, MTGV preliminary results. – TBD |
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Xband radar based Rainfall Quantitative Estimation during MeghaTropiques GV exercises – Modeste KACOU, Géosciences Environnement Toulouse, Laboratoire de Physique de l’Atmosphère et Mécanique des Fluides |
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Comparison of the Cameroon Weather Synoptic Stations Rainfall Data with TRMM Datasets – MOUDI PASCAL IGRI, Ecole Africaine de la Météorologie et de l’Aviation Civile/Laboratoire de Modélisation Environnementale et de Physique de l’Atmosphère |
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Validation of satellite-derived rainfall estimates over China – wei liao, National Meteorological Information Center |
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Validation and Intercomparison of Satellite Rainfall Products over Peru – Waldo Lavado, Servicio Nacional de Meteorología e Hidrología del Perú, SENAMHI |
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Precipitation product retrieved from EUMETSAT geostationary satellites. – Marie Doutriaux-Boucher, EUMETSAT |
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Coffee break |
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Other Ground Validation activities and data sets, MTGV preliminary results. |
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Preliminary assesment of the MT TAPEER product and impact of MADRAS – Taburet et al. |
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TAPEER preliminary validation in West Africa, Jully August 2012, C. guilloteau, GET |
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Lunch ( on site buffet) |
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Closing Discussion – Chairman reports |
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PYRÉNÉES ROOM : mini-course on R for Ground reference Rainfall Processing and SAt-Ground comparisons – a 3 hours short course based on examples to learn how to Quality control and process your rain gauges data with the free package R. |
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