Textbook Notes (363,474)
Canada (158,377)
ESS102H1 (7)
Tutti (6)
Chapter 9

GLG110 Textbook Notes Exploring Geology 2nd Ed Chapter 9

2 Pages
Unlock Document

University of Toronto St. George
Earth Sciences

[GLG Text Notes Chapter 9-10] 1 Chapter 9: Global Climate Change  Climate: describes an area’s long-term atmospheric conditions, including temperature, moisture content, wind, precipitation, barometric pressure, solar radiation, and other characteristics o Climate differs from weather in that weather specifies conditions localized sites over hours or days, whereas climate describes conditions across broader regions over seasons, years, or millennia o Global climate change: describes trends and variation in Earth’s climate, involving aspects such as temperature, precipitation, and storm frequency and intensity  Global warming: refers to change in average global surface temperature  Three factors exert more influence on Earth’s climate than all others: o Sun (provides heat + energy) o Atmosphere (keeps a habitable temperature; moderates temp) o Oceans (shape climate; stores + transports heat and moisture)  Greenhouse gases such as nitrous oxide and carbon dioxide absorb and re-emit infrared radiation, some of which travel into space while others are projected downward back to the surface thus warming the surface known as greenhouse effect  Global warming potential refers to the relative ability of one molecule of a given greenhouse gas to contribute to warming  Carbon dioxide is the greenhouse gas of primary concern: although it does not have most potential, its abundance in the atmosphere makes it the most significant; human activity has boosts its concentration in the atmosphere; burning fossil fuels ad2 CO o Other greenhouse gases also add to warning: methane by tapping into fuel deposits, nitrous oxide is by-product of chemical manufacturing plants, water vapour (it is not view as having driven industrial-age climate change because its global concentration has not changed)  Aerosols: microscopic droplets and particles, can have either a warming or cooling effect; e.g. soot or black carbon aerosols can cause warming by absorbing solar energy, but most phosphoric aerosols cool the atmosphere by reflecting the sun’s rays  The amount of change in energy that a given factor causes is called its radiative forcing o Positive forcing warms the surface, where
More Less

Related notes for ESS102H1

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.