ASTR 1101 Chapter : Mar30 Global Warming
Document Summary
2009 *: global warming is an observed fact, and virtually every reputable expert agrees, completely unprecedented throughout the last 10,000 years, earth has warmed by 1. 4 f in last century. Global warming (already increased by 1 f) (will warm by 4 -10 f by 2100) Organizations: american meteorological society, american astronomical society, american geophysical union, american physics society. Intergovernmental panel on climate change: network of african science academies, national science academies of: Us, russia, uk, germany, japan, canada, france, brazil, Italy, india, china, australia, new zealand, sweden, . Weather always fluctuates a lot, and picking out selected extremes is meaningless, you have to look at the large trends (cid:1)last year it got very cold/warm here (cid:2) (cid:1)a very big iceberg just broke off in antarctica (cid:2) (cid:1)snowfall is up/down (cid:2) Current sea level rises not coming from icecaps. Very cold air has little water, it is too cold to snow, So warming from very-cold to cold will make more snow.
