Lecture 33-new

Lecture 33-new - The Industrial Revolution and Climate...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
The Industrial Revolution and Climate Change - II The last 200 years have seen the first clear-cut global consequence of human activity that could affect climate - increase in atmospheric greenhouse gas concentrations
Background image of page 1

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

View Full DocumentRight Arrow Icon
GREENHOUSE GASES IN THE ATMOSPHERE CARBON DIOXIDE (1750-2000) CONCENTRATIONS OF GREENHOUSE GASES CO 2 methane CFCs ozone nitrous oxide * water vapor
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Nitrous Oxide (N 2 O) - Another Greenhouse Gas We know nitrous oxide better as laughing gas. Its concentration in the atmosphere is very small, less than 1 ppm. But, it is rising at a rate of 2.5% per decade. We don’t know where all nitrous oxide comes from, but one source is automobile emissions.
Background image of page 4
Other Industrial Components Other automobile pollutants, particularly ozone. CFCs (chlorofluorocarbons) - chemicals used for refrigeration, insulation, and aersol sprays. CFCs contribute significantly to ozone depletion. CFCs are also greenhouse gases. Their concentration is low (~1 ppb), but their greenhouse effect is 5000-10,000 TIMES that of CO 2 . Aersols - solid particles that come from smog and smokestack emissions (plus natural sources) have the opposite affect of greenhouse gases, they mask incoming insolation and cool 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
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/08/2009 for the course GEOL 150Lxg taught by Professor Stott during the Spring '07 term at USC.

Page1 / 17

Lecture 33-new - The Industrial Revolution and Climate...

This preview shows document pages 1 - 6. Sign up to view the full document.

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