ENV100H1 Lecture Notes - Lecture 5: Axial Tilt, Orbital Eccentricity, Milankovitch Cycles

• School: UTSG
• Department: School of Environment
• Course: ENV100H1
• Professor: Stephen Scharper

Document Summary

When the trees leave: scientists grapple with a shifting climate. Marnie branireun: global warming = catastrophic -> emission of co2 and greenhouse gases-> trapping of heat on earths surfaces-> heating up earth->irreversible, climate change: alteration in the long term patterns and statistical averages of meteorological events. Changes in the atmosphere- has an efect on landscape and topography. > where you live now may be uninhabitable in a few decades: climate vs weather: they are not the same thing. Arctic: iceland starts melting-(already 11-16 degrees higher in summer)-loss of sea ice: antarctica: sea levels increasing- (already colossal sheets of sea ice(half the size of p. e. i) collapsed in 2002- then again in 2008 twice. )-50% thermal expansion+ 50% ice melts: weather changes, warmer climates = more evaporation of water from earths surfaces = more extreme weather. (storms, heatwaves, precipitation changes, increase in storms. Env100h 2014: early springs-late winters, some species going extinct, greenhouse gasses-trap heat-> making the planet warmer.