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Slide 1 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Use of Satellites for Risk Management A key task of the GEO Workplan.

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Presentation on theme: "Slide 1 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Use of Satellites for Risk Management A key task of the GEO Workplan."— Presentation transcript:

1 Slide 1 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Use of Satellites for Risk Management A key task of the GEO Workplan Dr. Guy Séguin Canadian Space Agency Task co-leader Presentation to the ITU-GEO Workshop: The Role of Remote Sensing in Disaster Management December 11, 2007

2 Slide 2 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin 2 Outline Background Objectives Issue Disaster Cycle Methodology Example – Floods Status Vision of the future

3 Slide 3 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Background GEO Workplan includes a task to address Use of satellites for risk management In Spring 2007, CSA was asked by the GEO Secretariat to play a leadership role with UNOOSA in broadening scope and impact of the task, ensuring development of a virtual constellation for risk management The task address all phases of disaster management and examines user requirements and system architecture for a global multi-hazard approach UN-SPIDER recognizes the critical importance of compiling user requirements, and serves as a bridge between space and the disaster management communities

4 Slide 4 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin 4 Objectives Compile the first comprehensive set of global user requirements and identify gaps in sustained observations for all phase of disasters management. Develop an architecture requirements in response of the users requirements to guide future development of satellites for the space segment of GEOSS Develops the concept of a virtual constellation of satellites starting with the existing International Charter and through CEOS promotes interoperability as well as long term definition and implementation of future missions

5 Slide 5 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Issue Insufficient frequency and harmonization of observations from various satellite (example SAR one day access)

6 Slide 6 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin 6 Disaster Cycle Charter

7 Slide 7 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Development of Users Requirements Establish user requirements for each disaster type and phase: Identify region of interest Identify target characteristics (what do we want to see?) Identify temporal revisit period Establish timeliness/latency requirements Identify end use for data (application, service, etc)

8 Slide 8 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Development of System Architecture Establish architecture requirements for each disaster type and phase: What type of satellite data? Coverage and revisit Potential source of data Ground segment Application Roll-up across all disaster types to establish overall requirements of virtual constellation

9 Slide 9 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin ©The World Bank – Natural Disaster Hotspots: A Global Risk Analysis Example – Floods World Bank Risk Analysis

10 Slide 10 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin User Requirements Roll-up – Floods Phase Requirements MitigationWarningResponseRecovery Target/data Topography Hydrological models Historical atlas of floods Flood models/simulations New infrastructure, houses Land-use classification Monitoring of dikes and dams Precipitation Water level (rivers, lakes) Weather forecast Soil moisture Snow-water equivalent Signs of catastrophic infra failure Water level (rivers, lakes) Extent of flood Status of critical infrastructure Weather forecast Status of critical infrastructure Damage assessment Flooded areas Revisit 1 to 3 years (imagery) 5 to 10 yrs (topography) Daily or better during high risk period Daily in early morning; twice daily if possible Weekly (major floods) for several weeks to several months Timeliness WeeksHoursHours (2-4 max)1 day End use Integration in land use planning/zoning Baseline for response Decision support for warnings & evacuation Situational awareness Resource allocation support Initial damage assessment Tracking affected assets Charting progress

11 Slide 11 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Architecture Requirements – Floods (I) Phase Requirements MitigationWarningResponseRecovery Data typeLow res DEM for flow rates (radar, stereo, laser) Higher res DEM (DTED-2 or better) for extent and location (radar, stereo, laser)_ Medium to high res (scale, other image sources, urban/rural) Optical or radar overlay (geo- coded, ortho-rect.) Archived imagery of previous floods Interferometric analysis of subsidence (and other changes) Met sats Precipitation radar X, C or L-band SAR 10-50m data Passive microwave (for soil moisture) Hi res optical upstream for slow flood Altimeters Interferometric analysis of subsidence (and other changes) Precipitation radar X, C or L-band SAR 10-50m data (extent of flood – large areas) ; higher res radar and optical for urban areas or flash floods (damage) Met Altimeters Med to high res optical and radar Interferomet ric coherent change maps Coverage and revisit Continuity of existing optical and radar missions (need to develop background mission coverage in areas on flood map) Daily coverage in regional areas affected Pre-dawn or dawn required Daily early morning coverage in regional areas affected Continuity of existing optical and radar missions

12 Slide 12 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Architecture Requirements – Floods (II) Phase Requirements MitigationWarningResponseRecovery Potential data source SRTM (background) SRTM DTED-2, Tandem-X DTED-3, Cosmo, etc…. GPM 3-4 radar satellites on same orbit; 2-3 satellites using same frequency in same orbits Optical: comparable? 3-6 radar satellites on same orbit Optical hi res (2 or more) 2 radar satellites using same frequency Optical hi res (1) Ground segment (need for development) Using existing ground segmentsFast download, fast tasking (northern/southern stations, geostationary com links) Very fast download and tasking (northern/southern stations, geostationary com links) Using existing ground segments ApplicationIntegration with risk map Land cover maps Information used for bulletins and evacuation, warnings Situational awareness products Tracking affected assets

13 Slide 13 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Status Consensus with UN-SPIDER on methodology to collect user requirements for multi-hazard disaster management for all phases Buy-in to process from large representative user body (including civil defense, international organizations) Commitment from space agencies to provide support to modeling scenarios, and to work towards solution in context of CEOS Negotiations underway with International Charter: Mechanisms for broadening of Authorized User community (those that activate the Charter during response) to include all GEO Member States currently under discussion Advice sought on how to better access archived data to support other phases (beyond response)

14 Slide 14 The Role of Remote Sensing in Disaster Management, Dec. 11, 07, G. Séguin Vision of the future July to November January to June Navigation through ice in Canadian water Daily access of the WorldRadar Constellation


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