Project: 0e8091c2-5dff-4719-a96b-f7b1294b4f57

Metadata Format
Project Title
A High-Resolution Integrally-Coupled Ice, Tide, Wind-Wave, and Storm Surge Model for Western Alaska
Description
This project will quantify the effect that the reduction of nearshore ice coverage has on coastal flooding by developing a model accounting for sea ice, tide, wind-driven wave dynamics and currents on storm surges along the Western Alaska coast.
Point of Contact(s)
LCC Network Data Steward
LCC Network Data Manager
lccdatasteward@fws.gov
Western Alaska Landscape Conservation Cooperative
1011 E. Tudor Road MS 281
Anchorage, Alaska 99503
Western Alaska Landscape Conservation Cooperative
1011 E. Tudor Road MS 281
Anchorage, Alaska 99503
Joel Reynolds
LCC Science Coordinator
joel_reynolds@nps.gov
Robert Grumbine, PhD
Physical Scientist
V: +1 301 7638000 x7214
Robert.Grumbine@noaa.gov

Project Abstract

The western coastline of Alaska is highly susceptible to coastal storms, which can cause coastal erosion, flooding, and have other pernicious effects to the environment and commercial efforts. The reduction in ice coverage due to climate change could potentially increase the frequency and degree of coastal flooding and erosion. Further, estuaries and delta systems act as conduits for storm surges, so when there is less nearshore ice coverage, these systems could introduce storm surge into terrestrial environments unaccustomed to saline intrusion, flooding, or other alien biogeochemical factors. ‚ÄčThis project quantified the effect of reduced nearshore ice coverage on coastal flooding. The project developed a large domain tide, wave and storm surge model (SWAN/WWIII + ADCIRC) for the Gulf of Alaska and Bering, Chukchi, and Beaufort Seas, with high resolution along the Western Alaska coast. This computational model was assessed using historical wind/pressure fields and station observation data and captured the complex multi-scale and interactive physics of the deep water, shelf, nearshore, coast, estuaries, and rivers, and is more robust operationally. The model's tidal solution was validated at 115 NOAA stations along the Alaska coastline for the 8 dominant astronomical tidal components and performed extremely well (R2 > 0.948 for the major semidiurnal phases, >0.945 for the amplitudes). Simulations of summer storms (ice free) predicted maximum surges within 5.5 cm of those recorded at Nome and Red Dog dock. The model did not perform as well for stronger winter storms with ice coverage, though performance was adequate to reveal that the presence of high ice coverage (>90%) may decrease the amount of surge only slightly.

Supplemental Info: None Provided.

Project Links

Project Keywords

  • ISO 19115 Topic Category (isoTopicCategory):
    • environment,
    • geoscientificInformation,
    • oceans
  • End User Types - Landscape Conservation Cooperatives (LCC End User Type):
    • Regional & county planners,
    • Federal resource managers,
    • Academics & scientific researchers
  • Project Category - Landscape Conservation Cooperatives (LCC Project Category):
    • Decision Support,
    • Data Management and Integration,
    • Data Acquisition and Development
  • Deliverable Types - Landscape Conservation Cooperatives (LCC Deliverable):
    • null,
    • Report,
    • Publication,
    • Presentation,
    • Datasets/Database

Associated Products

ID Title Metadata Link
5f006a4f-3637-4cb3-be29-6e6d86c90848 A High-Resolution Integrally-Coupled Ice, Tide, Wind-Wave, and Storm Surge Model for Western Alaska mdJSON ISO 19115-2 HTML
c804ded9-146a-4a58-a791-34292ed88558 Modeling Tides and Storm Surge Under Varying Sea Ice Conditions in the Gulf of Alaska and Bering, Chukchi, and Beaufort Seas mdJSON ISO 19115-2 HTML
52382f49-6b58-46aa-8f67-7d8664f1f114 Large Scale Wave, Tide, and Surge Modeling in Sometimes Icy Waters mdJSON ISO 19115-2 HTML
6808e69f-8f69-4cc3-af32-1068ae507035 Bathymetry over model domain mdJSON ISO 19115-2 HTML
1e10bdbb-10e4-4e88-afea-906cb63c351a Model mesh and bathymetry specification mdJSON ISO 19115-2 HTML
3f781ee4-382f-47fe-a740-486f1d4c6cc2 Tidal Coefficients -- best current working set mdJSON ISO 19115-2 HTML
b356aba1-3224-4a6c-8d1c-4701a7363ce9 A High-Resolution Coupled Tide and Storm Surge Model for the Gulf of Alaska, Bering Sea, Chuckchi Sea, and Beaufort Sea mdJSON ISO 19115-2 HTML
0bfd2bc8-b083-45e7-b495-498c1aec8f2b Westhuysen Webinar - A high-resolution, integrally-coupled ice, tide, wind-wave, and storm surge model for western Alaska mdJSON ISO 19115-2 HTML