1 / 36

Begin with introductory video youtube/watch?v=zH-dBsbOxbY

Begin with introductory video http://www.youtube.com/watch?v=zH-dBsbOxbY. Climate Change & Sea-Level Rise Along the Gulf of Mexico A COSEE Online Institute Presentation Dr. E.D. Estevez estevez@mote.org Mote Marine Laboratory. Today’s Topics. Sea level background Signs of sea-level rise

arav
Download Presentation

Begin with introductory video youtube/watch?v=zH-dBsbOxbY

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Begin with introductory videohttp://www.youtube.com/watch?v=zH-dBsbOxbY

  2. Climate Change & Sea-Level Rise Along the Gulf of MexicoA COSEE Online Institute PresentationDr. E.D. Estevezestevez@mote.orgMote Marine Laboratory

  3. Today’s Topics Sea level background Signs of sea-level rise Projections of future sea-level rise Visualizing sea level now and in the future

  4. Sea-Level Variations Waves Tides Storm Surges Seiches Intra-Annual Cycles Multi-Annual/Decadal Cycles (El Niño, AMO) Planetary Cycles (Milankovitch Cycles) Anthropogenic Forcing

  5. http://tidesandcurrents.noaa.gov/sltrends/

  6. In the Context of Climate Change… The main contributors to sea level and sea-level rise are: • Steric effects- the expansion of the world ocean as it warms • “New water”- addition of water from ice sheets and glaciers Other factors are also involved.

  7. Subsidence Subsidence, or the sinking of land, has multiple causes. Without sea-level rise, a subsiding coast experiences a relative rise in sea level. Subsidence added to sea-level rise enhances the rate of relative sea-level rise. Subsidence contributes to the loss of coastal wetlands, but Coastal wetlands and forests are also affected by the present rate of sea-level rise, even in the absence of subsidence.

  8. Effects: Sea Level Rise WHAT WE KNOW  Many tidal wetlands are keeping pace with sea level changes. Some are accreting vertically, migrating up-slope, or both. Open estuarine waters, brackish marsh, and mangroves in south Florida estuaries are expanding. Wetlands elsewhere are perishing as estuarine and coastal forests and swamps are retreating, replaced by marsh vegetation. Even at constant rates of sea level rise, some tidal wetlands will eventually “pinch out” where their upslope migration is prevented by upland defenses such as seawalls.

  9. Effects: Sea Level Rise WHAT ISPROBABLE Major spatial shifts in wetland communities, including exotic species invasions, will occur.   More lowland coastal forests will be lost during the next one to three centuries as tidal wetlands expand across low-lying coastal areas.   High diversity wetlands in tidal freshwater reaches of coastal rivers will be replaced by low diversity wetlands.  Most tidal wetlands in areas with low freshwater and sediment supplies will “drown” if sea level rise outpaces their ability to accrete vertically.

  10. Effects: Sea Level Rise WHAT IS POSSIBLE More than half of the saltmarsh, shoals, and mudflats critical to birds and fishes foraging in Florida estuaries, could be lost during the 21st century.  Recreational and commercial fish species that depend on shallow water, or intertidal and subtidal plant communities, are vulnerable.  The loss of tidal wetlands will result in dangerous losses of the coastal systems that buffer storm impacts.

  11. Lido Key, Sarasota County, FloridaWednesday 09/16/09 11:05 am (2.4 ft. astronomical)

  12. Gulf Waters Flooding Storm-water Drains at Normal High Tide

  13. We Already Adapt Seawalls, Docks and Piers Bridges and Causeways Stormwater Systems Beach Policies and Practices Wetland Creation Building Heights Disaster Preparedness

  14. www.floridaoceanscouncil.org

  15. Sea-Level Rise Visualization for Alabama and Mississippi.http://gom.usgs.gov/slr/slr.htmlThis pilot project is a collaborative effort of the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center, Mississippi-Alabama Sea Grant Consortium, and U.S. Geological Survey.

  16. Insert second video with pan of beachhttp://www.youtube.com/watch?v=jWVG2AyI1nQ

  17. Mobile State Docks, Mobile Riverhttp://tidesandcurrents.noaa.gov/data_menu.shtml?stn=8737048 Mobile State Docks

  18. Used with permission by Sarasota Magazinewww.sarasotamagazine.com

  19. For Local Help Louisiana Universities Marine Consortium • http://www.lumcon.edu Gulf Coast Research Laboratory • http://www.usm.edu/gcrl Dauphin Island Sea Lab • http://www.disl.org NOAA CO-OPS Water Level Program • http://tidesandcurrents.noaa.gov

  20. Thank You, and Thanks to… Brian M. McCann, Ph.D. Center for Educational and Training Technology Multimedia Development Group Mississippi State University Rusty Holmes and Joe Nickelson Mote Marine Laboratory Barbara Lausche Mote Marine Policy Institute Sarasota Magazine Anonymous reviewers …and the many public agencies from whom slides were borrowed.

More Related