Climate Change Sea Level Rise Climate Change Weather
- Slides: 14
Climate Change: Sea Level Rise
Climate Change Weather vs. Climate Weather: day to day changes in temperature, rainfall, cloudiness, moisture Climate: long term changes in weather patterns on our planet Effects of climate change: Sea level rise (today’s activity) Warmer sea surface temperatures Drought (water shortage), flooding
Pacific Islands Ocean Observing System
Divers work on sensors at the Kilo Nalu Reef Observatory which monitor water quality and temperature
HIOOS Wave buoys monitor wave Coastal Wave height, Buoy direction, and period around Measurements the Pacific Ocean
CO 2 Buoy – South Shore Oahu Temperature Carbon Dioxide Salinity Oxygen Chlorophyll Turbidity Photo courtesy of R. David Beales, UH Creative Services
HIOOS Coastal Wave Buoy Measurements Sea Level Stations Tide gauge stations all over the world continuously monitor water level
CO 2 and Climate Change Greenhouse effect – makes life on Earth possible CO 2 comes from natural and man made sources: Natural: animal respiration, volcanoes Man made: burning fossil fuels (cars, planes, electricity), deforestation (cutting/burning trees) Too much CO 2 causes too much warming
What affects sea level on short time scales? • Tides • Weather • storms, hurricanes, waves • El Nino • can lower or raise sea level depending on location
What causes global sea level rise? Climate Change Increasing temperatures cause melting ice in alpine glaciers, Greenland, and Antarctica Warming causes thermal expansion of ocean water – like air and other fluids, water expands as the temperature increases
Types of ice Land-based ice (freshwater) Glaciers, icebergs Ice sheets (Antarctica and Greenland) Alpine (mountain) ice Sea ice (seawater) Forms in the sea as water freezes Floating in water Glacier Alpine Ice Sea Ice Photo credit: NSIDC
What are the effects of sea level rise? Coastal flooding Contaminating drinking water with seawater Increases impact of storms Increases risk of coastal erosion
Future Sea Level Rise Prediction: Sea level will rise 1 m (3. 3 ft) in the next 100 years Many areas in Hawaii are close to sea level Data from UH Coastal Geology Group
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