Ch21_As Presented

Ch21_As Presented - The climate system The climate system...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
The climate system The climate system includes the Atmosphere Hydrosphere Geosphere Biosphere Cryosphere (ice and snow)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The climate system Figure 21.2
Background image of page 2
How is climate change detected? Techniques for analyzing Earth’s climate history Seafloor sediments – numbers and types of organic remains are indicative of past sea- surface temperatures Oxygen isotope analysis – ratio of 18 O/ 16 O in shells of microorganisms reflect past temperatures
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How is climate change detected? Techniques for analyzing Earth’s climate history Other sources of data for studying past climates include Growth of tree rings Pollen contained in sediment and coral reefs Information found in historical documents
Background image of page 4
Some atmospheric basics Composition of the atmosphere Air is a mixture of many discrete gases Composition varies over time and distances After water vapor, dust, and other variable components are removed, nitrogen and oxygen make up 99% of the clean dry air CO 2 , although present in minute amounts (0.0338%), greatly influences the heating of the atmosphere
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Composition of Earth’s atmosphere Figure 21.9
Background image of page 6
Composition of the atmosphere Two important variable components of air are water vapor and aerosols Water vapor absorbs ultraviolet radiation given off by Earthsimilar to CO 2 Aerosols (tiny solid and liquid particles) are
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/17/2008 for the course GS 121 taught by Professor Leavell during the Fall '07 term at Ohio State.

Page1 / 25

Ch21_As Presented - The climate system The climate system...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online