SLIDE 1
SEA-LEVEL RISE & FLOOD RISK MONITORING Mark A. Merrifield , - - PowerPoint PPT Presentation
SEA-LEVEL RISE & FLOOD RISK MONITORING Mark A. Merrifield , - - PowerPoint PPT Presentation
SEA-LEVEL RISE & FLOOD RISK MONITORING Mark A. Merrifield , Director Center for Climate Change Impacts and Adaptation Port of San Diego Sea Level Rise Ad-Hoc Committee Meeting December 6, 2018 SEA-LEVEL RIS ISE San Diego sea level has
SLIDE 2
SLIDE 3
SEA-LEVEL RIS ISE PROJECTIONS
Establish observing capabilities now to better understand future risks
SLIDE 4
Extremes become more extreme Chronic tidal flooding Saltwater Inundation Higher water tables impede drainage Damage to coastal infrastructure Increased beach and cliff erosion Stress on wetlands and coastal ecosystems
SEA-LEVEL RISE CHALLENGES FOR SAN DIEGO
SLIDE 5
ADAPTIVE PATHWAYS
Current situation Action A Action B Action C Action D
Transfer station to new policy action Adaptation Tipping Point of a policy action (Terminal ) Policy action effective Changing conditions Time high-end scenario Time low-end scenario
10 70 80 90 100 Years 10 70 80 90 100
1 2 3 4 5 9 Pathway Co-benefits Costs Benefits +++ ++
- - -
- +++
+++++ +++ + + Time horizon 100 years
Pathways that are not necessary in the low-end scenario
6 7 8
- - -
+ +++ ++++ + Signal Decision node
Jayantha Obeysekera
SLIDE 6
IM IMPERIAL BEACH FLOODING EVENT
SLIDE 7
RESILIENT FUTURE IN INITIATIVE
IM IMPERIAL BEACH FL FLOOD WARNING SYSTEM
Tide gauge Wave buoy Water level sensors Salinity Drone surveys
Monitoring:
- Wave heights and
period
- Currents/ wave
directions
- Wave run-up
- Tides
- Location, duration and
depth of flooding during events
- Groundwater elevation
changes & salinity
- Beach width changes
Lifeguard Tower Camera
SLIDE 8
SLIDE 9
EXTREME TOTAL WATER LEVELS – EXAMPLE IM IMPERIAL BEACH
SLIDE 10
SAN DIE IEGO BAY
OBSERVATIONS TO TRA RACK FOR FL FLOOD RIS RISK AND MODEL SE SEA LE LEVEL RIS RISE Waves & Circulation: Sea and swell models + circulation models Water levels: How various locations around the Bay response to tides/waves Winds: wind-driven waves Land elevation: sea levels rising or subsiding Groundwater Shoreline/beach changes
https://cdip.ucsd.edu/?nav=recent&sub=nowcast&units=metric&tz=UTC&pub=public
SLIDE 11
SAN DIE IEGO BAY
FL FLOOD RI RISK AND SE SEA-LEVEL RI RISE
SLIDE 12
SAN DIE IEGO BAY
PIL ILOT PROJECT FOCUSED ON AIRPORT
SLIDE 13
OTH THER MONITORING APPLICATIONS FOR SAN DIE IEGO BAY
Beach Erosion Sand Replenishment Inform Ocean Planning and Maritime Operations Living Shorelines
https://www.conservationgateway.org
SLIDE 14
VALIDATION IN INFORMATION FOR SLR TOOLS
https://coast.noaa.gov/slr/ http://data.pointblue.org/apps/ocof/cms/index.php?page=flood-map https://cal-adapt.org/tools/slr-calflod-3d/
SLIDE 15