Geography 2153A/B Chapter Notes - Chapter 5: Logarithmic Scale, Progressive Tax, Criteria Air Contaminants
6 Dec 2013
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Document Summary
Atmospheric concerns: climate systems, changes, atmospheric composition, greenhouse effect and climate change, ozone layer, airborne contaminants, acidic deposition, policy responses, challenges to air quality sustainability. So2, particulates (pm), cfcs heavy metals, reactive hydrocarbons (hcs) Ghgs, smog, nox, sox, polycyclic aromatic hcs (pahs), carbon monoxide (co) Ghgs, co, pah"s, pm, loss of carbon sinks. Dynamic atmosphere +circulating ocean +changing earth surface. All the systems are connected and theres feedbacks. Affecting on one part of the system can affect others. Natural and anthropogenic process: 0. 6 average global surface air increase in temperature last 100 years, accelerating in recent decades (most likely) due to anthropogenic causes, time lag - changes now may not have effects for decades. Radiation coming into earth is the first component, uva, uvv to heat up the surface. Reradiated back, 10% leaves earth, 90% is absorbed. Need a stable temperature range to survive. Its accelerating, a steep increase which is a concern.
