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Paleoclimate Insights for Enthusiasts

The document introduces paleoclimate, emphasizing the distinction between long-term climate change and short-term weather. It discusses the methods used in paleoclimatology, including the analysis of physical evidence from the past to interpret ancient climates. Additionally, it highlights the composition of Earth's atmosphere, the meaning of CO2 concentration in ppm, and the consequences of rising CO2 levels and global temperatures, such as melting glaciers and changes in ecosystems.

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7 views2 pages

Paleoclimate Insights for Enthusiasts

The document introduces paleoclimate, emphasizing the distinction between long-term climate change and short-term weather. It discusses the methods used in paleoclimatology, including the analysis of physical evidence from the past to interpret ancient climates. Additionally, it highlights the composition of Earth's atmosphere, the meaning of CO2 concentration in ppm, and the consequences of rising CO2 levels and global temperatures, such as melting glaciers and changes in ecosystems.

Uploaded by

athu622
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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An introduction to paleoclimate

Climate change and weather

- Climate change is long term changes, 100 y, or 1000 years. How is it


changing
- Weather is just position of the earth and the weather of the season

Paleocliatology…

 Considers ancien climate in light of physical principles and


understanding (based on observations of mordern climate)
 Uses physical evidence that form in the past (proxy date) for ex.
o Isotopes, tree rings, cave deposits, corals, old shorelines,
sediments
 Make interpretations about the climate of the past.

What gases dominate earth’s atmosphere?

1. Nitrogen (N^2) 78%


2. Oxygen (02) 21%
3. Argon
4. Carbon dioxide 0.04
5. Other gases, and water vapor

What does ppm mean?

CO2 concentration is listed in ppm

Ppm-= part per million

This refers to the number of molecules of co2 in every mllion molecules of


dry air

Why does it increase? And decerase

Bc of CO2 dadter plants grow leaves in the spring and photosynthesis


increases

What are some of the consequences of increasing CO2 and global


temperature
Meltinng claciers

Sea level rise and flooding of low-lying coastal areas by salt water

Ecosystems change, the range of plants animals and diseases changes


impacting agriculture migration of organisms and health

Increase in severe wather events

Disruption of glabal oceanic curculation

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