Presentation by Felix Dols (Deltares, Netherlands) at the Delft3D User Days, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 14 November 2023, Delft.

1. European Digital Twin Ocean
and Delft3D FM
Felix Dols
Deltares
14-11-’23

2. Digital Twin

3. What is a Digital Twin?
What is essential for a Digital Twin?
Real data
Interactive
Real physics
Integrated
Social
Photorealistic/Virtual Reality
Digital Twin related papers
*Sciencedirect & Scopus **Fedor Baart
* **

4. Is a Flight simulator a Digital Twin?
Single purpose
*Fedor Baart

5. Is a Serious Game a Digital Twin?

6. Is a Hydrodynamic model a digital twin?

7. EDITO: Make ocean knowledge accessible
Integrate in existing EU public infrastructure
Prepare next generation of marine models
Enable stakeholders to become knowledge partners
EU mission: Restore our Oceans and Water

8. EDITO development
Expand data
lake
co-design
& open-
source
Interactive
for inter-
mediate
users
Beyond
EDITO
scope

9. Integrate ocean
models in public
data & computing
infrastructure

10. End goal: Make ocean knowledge accessible
Sub goal: Secured access to input & validation data
Secured access to cloud computing- and HPC resources
INTEGRATE in EU public infrastructure
EDITO platform:
European marine
data lake
EDITO Lab:
marine models
and pre-/post
processing tools
EDITO Lab:
Demonstrations
Computing infrastructure
Cloud | EuroHPC
Open-source
data: climate,
bathymetry
& rivers
CMEMS
EMODnet
EUMETSAT
ECMWF
ESA
Zero emission
Zero pollution
Biodiversity

11. End goal: Make ocean knowledge accessible
Sub goal: Efficiently enhance and combine model frameworks
PREPARE marine models

12. MODEL
NAME
SCALE
PHYSICS
WAVES
SEA
ICE
PARTNERS
REFERENCES
OCEAN
MODELS
NEMO G/R * X X MOi/CMCC Madec et al., 2019
HBM R/C X X DMI Murawski et al.,2021
SHYFEM-MPI G/R/C X X CMCC/UniBO Micaletto et al., 2022
SCHISM R/C X X HEREON Zhang et al., 2016
Delft3D FM R/C X X DELTARES Lesser et al., 2004
WAM G/R X HEREON Janssen, 2008
WW3 G/R/C X CMCC Tolman, 1997
Underlying numerical models
* G= Global (~ 2-3 km)
R= Regional (~1 km)
C= Coastal (~100 m)

13. Enhancing numerical models with AI
Snapshot of suspended
sediment concentration
using remote sensing
(L3 product)
Snapshot of suspended
sediment concentration
reconstructed with
4DVarNet (RMSE 0.126)
Testing 3 Deep Differential Emulators
Speed up simulation time of numerical models
Achieving better interactivity
4DVarNet for SPM in Wadden Sea

14. Applications

15. 2. Ship routing for zero carbon
Using forecasts of ocean waves
and currents to reduce CO2
emmissions
1. Marine Protected Areas
& biodiversity
Mapping habitat suitability
ranges for protected species.
3. Zero pollution
Simulating release of oil from
ships and plastics from land.
End-to-end demonstration: Focus Applications
<output of VISIR-II
ship routing model
for green corridor
Japan-Australia
^ocean forecast

16. 2. Marine Plastics
What if we capture plastics
before they reach our seas?
Modelling circulation and wave
induced drift.
1. Nature based solution
What if we reconstruct seagrass
to absorb wave energy?
3. Aquaculture & Zero Carbon
Simulating impact of large scale
aquaculture farms (e.g. mussels)
on carbon sequestration.
End-to-end demonstrations: What if…? scenarios

17. Marine aquaculture offers growth
opportunities for the Blue Economy.
We aim for sustainable intensification of
low-emissions aquaculture.
A What-if Scenario is aimed to analyze the
impact of aquaculture operations on
carbon emissions on a local and regional
scale.
It is co-designed with actors from regional
policy level (e.g. OSPAR) and national level
(e.g. ministries).
What-If scenario 3
Aquaculture for Zero Carbon Emission

18. Include shell growth of shellfish, using
Dynamic Energy Budgeting (DEB) for
biocalcification. (Stechele & Levaud, 2023)
Parameterization & validation of DEB
module using Delft3D FM (D-Flow FM
and D-Water Quality (WQ)) output.
Implementation in the D-Water Quality
module of Delft3D FM for coupled runs.
Simulation of carbon and nutrient fluxes
with Delft3D FM model of the Dutch
Continental Shelf (DCSM), including WQ
and DEB.
What-If scenario 3
Aquaculture for Zero Carbon Emission - Developments
source: Salgado et al. 2022

19. ←
Aquaculture upscaling
scenario for the North
Sea
Simulated impact of
aquaculture scenario on
chlorophyll-a concentration
→
Example of aquaculture impact modelling using Delft3D FM
Scenario: ~25% of offshore windfarm area used for combined
seaweed & mussel farming. Target of 1 kgDW/km2 of seaweed and
0.5 kgDW/km2 of mussels.
What-If scenario 3
Aquaculture for Zero Carbon Emission

20. Digital Twin Ocean: model building

21. D-Eco Impact
Deltares’ impact assessment tool, compatible
numerous spatial output data formats.
Delft3D FM
Deltares’ hydrodynamic simulation software
suite. Including D-Morphology and Delwaq.
Digital Twin Ocean: service catalog

22. European Digital Twin Ocean
More information

23. EDiTO-Lab
website
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