1. Global Data Services and
Analysis Frameworks
Dare to share global data
Delft3D User Days 2019
Daniel Twigt & Mark Hegnauer

2. Global Data Services
Making global data available
on a digital platform for everyone
2

3. Global Data Services
Making global data available
on a digital platform for everyone
3

4. Global Data Services
Why?
4

5. Why focus on global data services?
Towards services ‘Global’ sets an ambition Market for global information

6. Global Data Services
Thematic
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7. Global Data Services
Thematic
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8. 8
Offshore
As a windfarm operator, I want to assess metocean conditions at my
windfarm, to assess workability conditions.
Workability conditions Design conditions FoundationMaintenanceTopics
Wind & wave
climates
Water level
statistics
Future sea
level rise
Future waves
& wind
Extreme
waves
Operational
currents
Regular
bathymetries
Example: MetOcean database. Historic wind and wave climates + statistics based on data of global (external)
models (ERA-Interim, ERA5, CFSR)
Period: 1979 - 2015
Type: Point and map data
Data
?

10. Coastal management
Shoreline positions Trends in shoreline change Storm ImpactTopics
As a coastal manager, I want to assess the state of my coast every
year & after storms, to decide for mitigating measures.
Wind &
wave
climates
Water level
statistics
Extreme
waves
Frequent
bathymetries
Future sea
level rise
Future
waves &
wind
Operational
currents
Regular
bathymetries
Historic
shorelines
On-the-fly
shorelines
changesOperational
waves
Data
Operational
water levels
(tide &
surge)
Operational
Discharge
Example: Shoreline monitor. Historic shoreline erosion and accretion
Period: 1979 - 2015
Type: Point and map data
?

12. Flooding
Flood hazards Flood impact Future floods
As a crisis response manager, I want to assess the flood risk due to the
typhoon approaching the Philippines, to warn the people in time.
Topics
Wind & wave
climates
Water level
statistics
Future sea
level rise
Future waves
& wind
Extreme
wavesOperational
currents
Regular
bathymetries
Operational
waves
Operational
water levels
(tide & surge)
?
Operational
Discharge
Data
Example: GLOSSIS (GTSM) and GLOFFIS

13. Global Tide and Surge Model v3.0
• 2D barotropic model
• Unstructured global grid
(25 km ocean - 2.5km coastal/1.25km EU)
• Bathymetry:
• EMODnet (250m) for EU
• Bedmap2 below lat 60S
• GEBCO 2014 bathymetry(~1km)
• TGF driven, no assimilation
• Two physical processes that are not
negligible at a global scale:
• Self attraction and loading (SAL)
• Tidal dissipation through generation
of internal tides
Runtimes in 8 cores ~3.6hour/week

14. GLOSSIS: real-time water level and storm-surge forecasts
at world-wide scale
• Real-time, medium-term forecasts
• Historical timeseries
• anywhere
• Ingredients:
• Deltares expertise: hydrodynamics, storm surge,
wave, bathemetry
• Computational engine: Delft3D FM based GTSM model
• Forecasting platform: Delft-FEWS
• Storage: Deltares OpenArchive

16. GLOFFIS: real-time hydrological forecasts at world-wide scale
• Medium-term and seasonal fluvial flow
forecasts
• Historical timeseries
• anywhere
• Ingredients:
• Deltares expertise: hydrology, WRM, forecasting
• Computational engine: Delft3D FM based
models:
• D-Hydrology (wflow)
• D-Flow FM (1D)
• Forecasting platform: Delft-FEWS
• Storage: Deltares OpenArchive

17. Recent developments: Global wflow
• Setup at 1x1 km2
• Using globally available base data:
• MERIT elevation data
• Soilgrids soil data
• Globcover / Corine landcover data
• With minimal calibration

18. Recent developments: Global wflow
• Setup at 1x1 km2
• Using globally available base data:
• MERIT elevation data
• Soilgrids soil data
• Globcover / Corine landcover data
• With minimal calibration
Samaniego, Luis, Rohini Kumar, and Sabine Attinger. "Multiscale
parameter regionalization of a grid‐based hydrologic model at the
mesoscale." Water Resources Research 46.5 (2010).

19. Recent developments: Global wflow
• Setup at 1x1 km2
• Using globally available base data:
• MERIT elevation data
• Soilgrids soil data
• Globcover / Corine landcover data
• With minimal calibration

20. Recent developments: Global wflow
Linked to other modules
D-Hydrology & D-Flow FMD-Hydrology & D-Water Quality D-Hydrology & D-Soil Erosion

22. Where are we now with the Global Data Services
• Still under development (early beta stage at present)
• Available on the Deltares network (now)
• Available for external beta-testers Q1 2020 (sign up)
• Official release end of Q1 2020

23. Where are we now and next steps
Develop a platform that has:
• Easy access to (global) data
• Enables quick setup of model & tools
• Includes a Model Analysis Framework
• To support Water Resources Management & Planning

24. Your feedback is appreciated
• General look and feel
• Which additional features would be useful
• Are the available data sources useful
• What should be changed to make it (more) useful
• What kind of opportunities do you see?

25. Thank you!