development & validation of a high-resolution, wind … data fusion lidar digital elevation...

Coastal Hydroscience Analysis, Modeling & Predictive Simulations Laboratory 1 CHAMPS Lab

Development & Validation of a High-Resolution, Wind-Wave, Tide, and

Hurricane Storm Surge Model for Mississippi & Alabama

Matthew Bilskie Univ. Central Florida

CHAMPS Lab 17th Annual ADCIRC Model Workshop

04/30/2013

Award No. NA10NOS4780146 from the National Oceanic and Atmospheric Administration (NOAA) Center for Sponsored Coastal Ocean Research


Nat’l Estuarine Research Reserves


NGOM Modeling Domain

FWJ FLPH_AL

MS_SELA


New Methods

Terrain Description 1. Lidar data fusion 2. DEM generation 3. Mesh node placement 4. DEM to mesh interpolation


Terrain Description

lidar Digital

Elevation Model

Unstructured Finite Element

Mesh


Lidar Data Fusion

lidar Digital

Elevation Model


Mesh

Combine lidar datasets… Pre- and post-Katrina lidar Post-Ike and Gustav lidar


DEM Generation

lidar Digital

Elevation Model


Mesh

Resolution of DEM?

Bilskie, M. V., and Hagen, S. C. (2013). "Topographic Accuracy Assessment of Bare Earth Lidar-Derived Unstructured Meshes." Advances in Water Resources, 52, 165-177.

DEM Grid Size (m)


Mesh Node Placement Vertical Features


Mesh Node Placement 5 m DEM


Mesh Node Placement 5m DEM + Vertical Features


Mesh Resolution

lidar Digital

Elevation Model


Mesh



Mesh Node Placement ~60 m element size


Interpolation Workflow

ADCIRC Mesh

(fort.14) (UTM16)

INTERPOLATION AUTO_v2.1.F90

(Bilskie & Hagen, 2013)

5 m DEM (*.flt/*.hdr) (UTM16) ADCIRC

Mesh (fort_Z.14

)

EXTRACT_VF_NODES_v2.F90

VF (Ridges & Valleys)

*.shp

Input File

Input File

ADCIRC Mesh VF Node Direct Lookup

(fort_VF_Z.14)

Inputs Codes Outputs

( ) 2

0.25

1 1

2 1 1

M

DEM

N

for NCA

N for N

∆=

∆

< = + ≥



Mesh Node Placement Mesh Elevations (DEM Interpolation)


Mesh Node Placement Mesh Elevations (DEM & VF Interpolation)


MS_AL_SELA ADCIRC Model

• 3.67 million nodes • 7.31 million elements • SWAN+ADCIRC (Dietrich et al., 2011)

• UCF FEMA FLPH_AL Mobile Bay, AL • SL15 - Southeast Louisiana (Bunya et al., 2010)

• SL16 - Deep Ocean (Dietrich et al., 2011)

• Bunya, S., Dietrich, J. C., Westerink, J. J., Ebersole, B. A., Smith, J. M., Atkinson, J. H., Jensen, R., Resio, D. T., Luettich, R. A., Dawsone, C., Cardone, V. J., Cox, A. T., Powell, M. D., Westerink, H. J., and Roberts, H. J. (2010). "A high-resolution coupled riverine flow, tide, wind, wind wave, and storm surge model for southeastern Louisiana and Mississippi. Part I: Model development and validation." Monthly Weather Review, 128(345-377). • Dietrich, J. C., Westerink, J. J., and Kennedy, A. B. (2011). "Hurricane Gustav (2008) Waves and Storm Surge: Hindcast, Synoptic Analysis, and Validation in Southern Louisiana." Monthly Weather Review, 139(8), 2488-2522. • Dietrich, J. C., Zijlema, M., Westerink, J. J., Holthuijsen, L. H., Dawson, C. N., Luettich, R. A., Jensen, R. E., Smith, J. M., Stelling, G. S., and Stone, G. W. (2011). "Modeling hurricane waves and storm surge using integrally-coupled, scalable computations." Coastal Engineering, 58, 45-65.


ADCIRC Mesh Mississippi & Alabama


ADCIRC Mesh Bay St. Louis, MS


ADCIRC Mesh Biloxi Bay, MS


ADCIRC Mesh Pascagoula River, MS


ADCIRC Mesh Grand Bay, MS


ADCIRC Mesh Tensaw River, AL (North Mobile Bay)


Validation

• Hurricane Katrina • Hurricane Isaac • Deepwater Horizon


Hurricane Katrina


Hurricane Katrina Hydrographs


Hurricane Katrina (426 HWMs) Comparison of Measured HWM to ADCIRC Simulation

(with waves)


Currently… • Finalizing Katrina Validation

– Processing Synthetic Aperture Radar (SAR) – Acquisition Date: 08/28/2005; 23:51:09

• Hurricane Isaac wind field • Gathering H. Isaac data

– USGS Isaac Storm Tide Mapper (http://wim.usgs.gov/isaacstormsurgemapper/isaacstormsurgemapper.html#)

• Enhance Land Cover with lidar – Manning’s n – Z0 – Canopy


Acknowledgements / Questions • Scott Hagen • Stephen Medeiros • David Coggin • Andrew Cox • ADCIRC Community

– John Atkinson – Zach Cobell – Casey Dietrich – Jason Fleming – Crystal Fulcher – Michael Salisbury

Contact Info Matt Bilskie E-Mail: [email protected] Office: 407-823-4843

development & validation of a high-resolution, wind … data fusion lidar digital elevation...

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