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Climate Change: Sea Level Rise

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)

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Climate Change: Sea Level Rise

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  1. Climate Change:Sea Level Rise

  2. 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

  3. Pacific Islands Ocean Observing System

  4. Divers work on sensors at the Kilo Nalu Reef Observatory which monitor water quality and temperature

  5. HIOOS Coastal Wave Buoy Measurements Wave buoys monitor wave height, direction, and period around the Pacific Ocean

  6. CO2 Buoy – South Shore Oahu Temperature Carbon Dioxide Salinity Oxygen Chlorophyll Turbidity Photo courtesy of R. David Beales, UH Creative Services

  7. Sea Level Stations HIOOS Coastal Wave Buoy Measurements Tide gauge stations all over the world continuously monitor water level

  8. CO2 and Climate Change • Greenhouse effect – makes life on Earth possible • CO2 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 CO2 causes too much warming

  9. What affects sea level on short time scales? • Tides • Weather • storms, hurricanes, waves • El Nino • can lower or raise sea level depending on location

  10. 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

  11. Types of ice Glacier • 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 Alpine Ice Sea Ice Photo credit: NSIDC

  12. What are the effects of sea level rise? • Coastal flooding • Contaminating drinking water with seawater • Increases impact of storms • Increases risk of coastal erosion

  13. 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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