ASTR 1101 Chapter : Little Ice Age
Document Summary
The total energy from the sun varies only from 1364. 5 to. This would cause only a small temperature change here on. 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. Activity??: reasonably good correlation between solar activity and world temperature from 1800(cid:1)s to ~1970, a reasonable conclusion is that the warming from 1800(cid:1)s to ~1970 is dominated by rising solar activity" Solar activity: global warming is rising fast since. 1975: solar activity has been holding steady or falling since 1975" Global warming is not due to solar activity" Co2 concentration increased by 35% in last century. Detailed calculations prove that this increase in co2 is responsible for the observed global warming since. Global warming (already increased by 1 f) (will warm by 4 -10 f) Organizations: american meteorological society, american astronomical society, american geophysical union, american physics society.
