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Good afternoon! Please get out your Climate Objective sheet and read the board.

Good afternoon! Please get out your Climate Objective sheet and read the board. Change the calendar!. Today – climate change effects Tuesday – Quiz Obj #4-13 Wed/ Th – Carbon Footprint due Friday – Review; Quiz obj 4-8 and 14-19 Monday – Test on Climate change all obj due.

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Good afternoon! Please get out your Climate Objective sheet and read the board.

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  1. Good afternoon!Please get out your Climate Objective sheet and read the board.

  2. Change the calendar! • Today – climate change effects • Tuesday – Quiz Obj #4-13 • Wed/Th– Carbon Footprint due • Friday – Review; Quiz obj 4-8 and 14-19 • Monday – Test on Climate change all obj due.

  3. 7th period • Fossil Fuel test class average 62.4 • Class goal for climate test _______

  4. Earth’s historical climate • Climate change is natural • 100,000 year Milankovitch cycles • A 1o change of the global average is significant • **The RATE of change is very slow – species could evolve and keep up with change

  5. Human society developed with the very slow rate of change • Need to predict planting and harvesting schedules • Need to time migration of animals used for food • Need to be able to expect storms in certain locations at certain seasons • Need to know when rivers would flood

  6. Climate and civilization • Human civilizations change when climate changes • 20,000 ybp (years before present) ice age: Bering strait freezes, people migrate to the Americas • 8,000-7,000 ybp – warming period Mesopotamia flourishing, Jericho established

  7. Mayan civilization – collapses suddenly 950 CE (common era – used to be called AD)Leif Erikson – 950 CE sails to Greenland

  8. Black Death in Europe – famine 1315-1317 – needed to import grain from ChinaLittle Ice age – 1550-1850 Irish Potato Famine

  9. Today • Storms ruin crops • Hurricanes disrupt coastal cities • Ice Days disrupt school/business • Airport closures disrupt travel

  10. Climate Change Effects

  11. Summary of Evidence Mechanism of the greenhouse effect CO2 at the beginning of the Industrial revolution: 280ppm CO2 today: 396ppm CO2 increases .5%/year Since 1860 global mean temp has increased .6-.7oC (1.1-1.4oF)

  12. Current Climate Data • Analyze your graph: • What is the graph about (what’s the title?) • How is it being measured? (What is on the X and Y axses?) • What is the general trend? (increasing/decreasing/constant) • Why is this information important?

  13. Observations Europe – 2011/2012 – record winter snows and cold Texas – 2011 record 10,000 year drought? Australia 2013 – extreme heat – new colors on weather maps California – severe drought, wildfire seasons starting in January 2012-2013 -United States experienced 25 climate- and weather-related disasters that claimed 1,141 lives and each exceeded $1 billion ($175 billion total) in damages.

  14. From the National Oceanographic and Atmospheric Administration (NOAA) • The year 2012 was the 10th warmest year since records began in 1880. 2013 was the 7th warmest year. • The 37th consecutive year that the yearly global temperature was above average. • Currently, the warmest year on record is 2010, which was 0.66°C (1.19°F) above average. • Including 2013, all 12 years to date in the 21st century (2001–2012) rank among the 14 warmest in the 133-year period of record. Only one year during the 20th century—1998—was warmer than 2012.

  15. Remember – Climate is an average of weather conditions!

  16. Climate change consequences – which are we seeing today? • More severe weather events (droughts, floods, extreme hot/cold) • Rising sea levels (glaciers melting) • Changing seasons – earlier spring • Shift of biomes away from equator • Increased insect-borne disease • Decreased availability of fresh water

  17. So what should our goal be?350ppm CO2

  18. Expected Effects of Climate Change • More severe weather events (droughts, floods, extreme hot/cold) • Rising sea levels (glaciers melting) • Changing seasons – earlier spring • Shift of biomes away from equator • Increased insect-borne disease • Decreased availability of fresh water

  19. How hot will it get? Depends on CO2 output:

  20. Predictions to know: • If CO2 goes to 450ppm by 2050, +2oC • +3 to +11oF is general possible range • Safe limit is 350ppm CO2 • Tipping point is probably at 2oC • (the point at which change due to human activity brings about sufficient new processes in nature to make any human reversal of the change impossible. )

  21. Work on that Carbon Footprint!

  22. Setting a SMART goal! • I will recycle more. • I will put solar panels on my roof. • I will get my parents to buy an electric car. • By the end of this month, I will refill my water bottle at least once before I recycle it at school. • Every night when I’m done with my game system, I will power it down completely.

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