flood forecasting initiative - europa...flood forecasting initiative google public alerts public...
TRANSCRIPT
-
Flood Forecasting InitiativeGuy Shalev
-
Flood Forecasting Initiative
Flooding impact
Flood Forecasting Initiative
-
Flood Forecasting Initiative
The Google Flood Forecasting Initiative
Flood Forecasting Initiative
Goal: Scalable high-accuracy high-resolution flood forecasts and warnings globally
-
Flood Forecasting Initiative
The Google Flood Forecasting Initiative
Why Google? Why not (just) Google?
Public-facing interfacesComputational resourcesAccess to global data(Elevation, user-generated data, etc.)ScalabilityMachine learning expertise
Governmental mandateHydrologic expertiseOperational expertiseRelationship with organizational consumers
-
Flood Forecasting Initiative
Hydraulic model - Goal
-
Flood Forecasting Initiative
Satellite imagery(Multiple sources)
Government
Google DEM generation
Gauge measurements& forecasts
Hydraulic model - Overview
Google Hydraulic Model(currently focusing on hydraulic
modeling of riverine floods)
Inundation Map
-
Flood Forecasting Initiative
Challenge: Elevation Maps
SRTM (NASA) Goal
-
Flood Forecasting Initiative
Challenge: Elevation Maps
Goal
Bihar 1992 - 2016 Bryk et al.
Flood Forecasting Initiative
-
Flood Forecasting Initiative
Producing Elevation Maps
-
Flood Forecasting Initiative
Also allows annual updates
Achieve 1 meter resolution & vertical accuracy
Multi-Asset Spatial Alignment
?
?
?
Where are the cameras pointing?What is the surface geometry?How does light reflect?
-
Flood Forecasting Initiative
Elevation Map Example
Flood Forecasting Initiative
Google-generated Elevation Map
SRTM
-
Flood Forecasting Initiative
Surface to Terrain Generation
Flood Forecasting Initiative
Digital Terrain ModelDigital Surface Model
-
Flood Forecasting Initiative
Embankments and river bed
Computational costs rise with higher resolution
Challenges
-
Flood Forecasting Initiative
Components are divided to physical and conceptual
They continuously interact with each other over time
Hydrologic ModelClassic Approach
-
Flood Forecasting Initiative
A Regional Hydrologic Model Using ML
Why Regional + ML? Main Challenges
Complex, non-linear processAbundance of dataScalabilityUngauged basins
Using the right metricsData quality disparityInterpretability and uncertainty
-
Flood Forecasting Initiative
Encouraging Results
Flood Forecasting Initiative
Kratzert et al. – Work in progress
-
Flood Forecasting Initiative
Informing the Public
Flood Forecasting Initiative
-
Flood Forecasting Initiative
Google Public Alerts
Public Alerts have already provided 100,000s of alerts to over 2 billion people
Help local and public authorities communicate emergency messages
Search Maps AndroidIn Progress
-
Flood Forecasting Initiative
Informing Governments
Flood Forecasting Initiative
-
Flood Forecasting Initiative
Funded by Google.org
Provide information to local NGOs to distribute to the community
Outsourcing Alerts
All our alerts are publicly available in human- and computer-readable formats
-
Flood Forecasting Initiative
Patna Pilot
Flood Forecasting Initiative
-
Flood Forecasting Initiative
Next Steps
Increase lead time
Improve communication infrastructure
Support new drivers of floods
Ganges & Brahmaputra India Globally
Imp
rove
fore
cast
s
Scale Up
-
Flood Forecasting Initiative
Thank You!
Flood Forecasting Initiative