CAS ES 105 Lecture Notes - Lecture 12: Ozone Depletion, Lightning, Nimbus Program

122 views14 pages

Document Summary

Ozone balance: the filter: can"t keep two o"s apart, uv continuously splits o2"s. What ozone does: shields earth from ultraviolet radiation, almost all uv-c (shortest wavelength: 100-280nm) lethal, half of uv-b (280-315nm) also damaging, some of uv-a (longest wavelength: 315-400nm) 266: global warming means colder stratosphere means more ozone loss. O3 is doubly destroyed , breaking the balance: cl then releases itself to attack another ozone - like. Why polar: less pronounced at north pole as not as cold, discovered over arctic in 1989, edges dropping down into new. Winter of night, no uv, cl builds on ice crystals, and held by vortex, frigid brew. Not just polar regions the entire planet is losing its uv ozone filter. 1978 epa bans cfc"s in aerosol cans. 1980 reagan administration halts all federal funding for new research. 1987 - montreal - 50% reduction by 1999.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers