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How do we learn about ancient climates?

How do we learn about ancient climates?. Studying paleo -climates helps scientists determine climate has changed over time naturally Why climate has changed in the past The Results… Earth’s climate fluctuates naturally for many reasons. What do climatologists study?.

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How do we learn about ancient climates?

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  1. How do we learn about ancient climates? • Studying paleo-climates helps scientists determine • climate has changed over time naturally • Why climate has changed in the past • The Results… • Earth’s climate fluctuates naturally for many reasons

  2. What do climatologists study? • Tree rings or “Dendrochronology” • 500-1000 years in the past • Precipitation changes

  3. What do climatologists study? • Ice Cores • Glaciers and polar ice (500,000 yrs) • New snow layer every year  ice • Bubbles trapped in ice can reveal composition of anicent atmosphere • Ash  volcanoes • Dust  drought

  4. What do climatologists study? • Sediment • Lake/ocean • Clay Chemistry • CO2 concentration as a function of aquatic life (plankton)

  5. What do climatologists study? • Fossil Record • Ancient life reveals climate clues • Reptiles don’t like cold weather • Marine fossils reveal ancient oceans

  6. Studying Climate Videos • PETM Boundary: http://vimeo.com/53685205 • Ice Cores in Peru: http://vimeo.com/53685203 • Studying Paleoclimate: http://vimeo.com/53685207

  7. Today’s Lab • Part 1- Tree Rings • Part 2- Ice Cores

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