esurge A Storm Surge Demonstration Project

Transcription

1 esurge A Storm Surge Demonstration Project Helen Snaith British Oceanographic Data Centre, National Oceanography Centre, UK

2 The Impact of Storm Surges

3 Great flood in the Netherlands History: Zeeland, 31 Jan casualties 2500 km2 flooded Evacuation of people Thousands of buildings destroyed

4 Vulnerability in Europe and worldwide EC assessment GVA (Delft Hydraulics)

5 ESA s Earth Observation Toolkit

6 ESA Storm Surge Project A new ESA Data User Element project AIM: To support storm surge systems, their services, engineers and scientists by facilitating the widespread user uptake and application of advanced information products from ESA and other Earth Observation missions. ERS, Topex/Poseidon derived M2 (left) & K1 (right) tidal amplitude (FES2004 model, CLS)

7 Timeline for esurge Project Project Start April 2011 for 30 months Phase 1: 12 months Generate Demonstration System with test events Phase 2: months Populate System and add live events METOP AVHRR TC Sidr Bangladesh ENVISAT ASAR Ganges Delta ENVISAT MERIS The River Plate GOCE GEOID unification of tide gauges ASCAT winds TC Nargis

8 esurge Consortium Leaders in Storm Surge forecasting Processing and use of EO data Outreach and web services

9 Key User Requirements To develop (based on mature and existing altimeter retracking systems), validate and provide dedicated coastal altimeter products. To develop, validate and, provide dedicated coastal products derived from SAR, passive microwave and optical satellite products. To provide and maintain an extensive historical archive of data products derived from satellite, in situ, model systems and socio-economic data for the purpose of improved storm surge modelling and re-analysis. To provide a near real time service of specific satellite products in support of storm surge forecasting and warning services. To encourage and assist (training, documentation, tools, services) the storm surge community to fully exploit the potential of satellite data for storm surge applications. To increase user uptake of coastal altimeter and other satellite data products by demonstrating their value in storm surge applications.

10 Objectives of the Project 1. Develop, demonstrate and validate advanced techniques for retrieving high-resolution information on TWLE, wind speed, and waves in the coastal zone. 2. Develop and provide validated coastal altimetry products for user defined Areas of Interest (AOI) 3. Provide access to general EO data products, NWP, NOP and other socio-economic data that characterise storm surge events in AOI 4. Develop an open-access database (the esurge Event Analysis and Repository Service: SEARS) of EO and other data for historical and contemporary storm Surge EVent (SEV) case studies for AOI 5. Provide a demonstration NRT service of EO data products and esurge services (esurge Live) in support of operational and experimental storm surge forecasting and warning services 6. Run a number of re-analysis data assimilation and validation experiments for historical and contemporary storm surge events and demonstrate the impact of EO data on storm surge applications 7. Provide dedicated training activities to encourage and assist the storm surge community to fully exploit the potential of satellite data for storm surge applications

11 User Service Requirements 1. Satellite data products processed in the coastal zone tuned to storm surge applications with uncertainty estimates 2. Standardisation of EO data for Storm Surges 3. Documentation of data and system tuned to Storm surge users 4. Easy access to EO data 5. Database of historical case studies over several areas of interest 6. NRT Service of EO data for operational systems 7. Tropical and Extra-Tropical Cyclone areas are both included 8. Build on existing capabilities develop only as required (e.g. ESA COASTALT, GlobWave projects) 9. Perform data assimilation experiments with the esurge system 10. Impact assessments of new data on storm surge models 11. Training and education tools for Users 12. Web portal as a central access point for all resources 13. Develop and maintain good international collaboration

12 Key Areas Of Interest (AOI) Some areas may only have limited data or data for limited number of SEV

13 Surge Events Within each AOI, Data will be collected for a series of Surge EVents (SEV) 50 Test Data sets 200+ Full Products Data Sets Selection Criteria Users (including esurge partner) interest Existence of, or planned, reanalysis experiments Application of operational agency criteria (eg events where a storm surge warning was issued)

14 Improving Access to Data esurge Users Web Portal Data access Data tools Visualization Training Handbooks Code EO Impact Assessment esurge-live! NRT service SEARS Case Studies of SEV in AOI Space Agencies Common Processing to agreed format(s) VIS/IR ALT SCAT NWP Flood Others Data Centres Data in in diverse formats and locations

15 Satellite Measurement Requirements Key measurement requirements for improved storm surge applications and services include: TWLE in coastal zone Storm track and intensity Nearshore wind fields Wave heights Surface water levels (at least 1-minute average values) Surface pressure fields, at least pressure drop Surface currents Sea surface temperature, vertical temperature profiles, sea surface height anomalies High resolution satellite images of inundated regions Satellite data: Satellite altimeter (winds, waves, water levels including a direct measurement of TWLE) Satellite scatterometer (wind) Satellite Synthetic Aperture Radar (winds and waves, swell, coastal inundation) Satellite passive microwave radiometers (winds, SST, sea ice) Satellite thermal infrared radiometers (SST, storm track) Satellite visible imagers (storm track, coastal inundation)

16 Daily fields (SST, OC, SLA, Wind) Global compositing Wind SLA SST OC Routine daily merged high resolution products (L4) are becoming available from multi-satellite composite data.

17 Scatterometry Winds Seawinds on QuikSCAT 25 km by 25 km of spatial resolution swath about 1800 km wide Metop ASCAT 25 km by 25 km of spatial resolution Two swaths about 550 km wide with a gap of about 650 km courtesy: S Zecchetto (ESA Storm Surge Project-User consultation meeting, Venice September 2009)

18 ASCAT winds on MetOp Descending passes only 3 October 2011 OSI SAF ASCAT 25-km product viewer :30

19 ASCAT winds on MetOp Descending passes only 3 October 2011 OSI SAF ASCAT 12.5-km product viewer :30

20 ASCAT winds on MetOp

21 OSCAT Winds on Oceansat2 Oceansat-2 (ISRO) global Ku-band Scatterometer (OSCAT) data

22 Satellite Altimeter Measurements Katrina Courtesy R. Scharroo Altimetrics LLC

23 Coastal Altimeter Data Measures TWLE!! Vignudelli et al (2010) Prototype retracking & Wet tropospheric processors available Ideally needs referencing to an orthometric height system together with in situ data Coastal Geophysical Data (CGDR) already developed Need to run the systems in a sustained manner New altimeters (Cryosat SIRAL) generate data ~300m along track (from November 2010->) AltiKa, Sentinel-3a & 3b JASON

24 GlobWave All satellite products already available in a CF-1.4 compliant NetCDF format esurge will act as an additional portal for a subset of GlobWave Wave Data Altimeter ERS-1, ERS-2, ENVISAT, TOPEX/POSEIDON, Jason-1, Jason-2, GEOSAT, GFO SAR ERS-1, ERS-2, ENVISAT Coastal Altimetry data generated within esurge can be served through the GlobWave portal

25 Visible/Infrared images Workhorse data for storm track monitoring especially from geostationary platform Sidr 2007

26 Example esurge Input Data Altimeter (ERS, ENVISAT, GEOSAT, TOPEX, JASON, CryoSAT) Passive Microwave (SSM/I, AMSRE, TMI, WindSat) Scatterometer (ERS, QuickScat, ASCAT, NSCAT, OceanSat-2 ) SAR (ERS, ENVISAT, RADARSAT, COSMO SkyMed, TerraSAR-X, RISAT ) Optical data (MERIS, AATSR, AVHRR, SeaWiFs Oceansat OCM-2 ) NWP and NOP model outputs Storm Surge model output and forcing Flood maps In situ measurements

27 ESA Data User Element The Data User Element (DUE) mission is to encourage the establishment of a long-term relationship between user communities and Earth Observation... DUE runs user driven projects to transfer research to applications DUE projects are run in close collaboration with users: User Requirements are defined prior to Invitation to Tender Letters of commitment from Champion Users Users involved as advisors during the project (annual user consultation workshop) Users assess the project results

28 Storm Surge User Consultation 42 people attended the meeting in Venice, Italy 2009 Supported by IOC and WMO 15 International countries represented including NL, UK, IE, NO, DK, IT, DE, FR, Canada, USA, Thailand, Puerto Rico, Australia, (with contributions from India and Mozambique) A number of Champion Users agreed to help guide the project, review the project outcomes and, advise ESA during the project Generated initial User Requirements

29 esurge Collaboration The esurge Contract demands international collaboration Local knowledge is required for effective Storm Surge management We want to link to active storm surge communities Exchange of ideas, models, experiences (operational and scientific) Identification of important AOI and SEV Testing of esurge products Participation in User Feedback, training and education etc

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31 Thankyou For more information please contact: or