Introduction to climate change Class #6, Fri., Sept. 10, 20101

 A question to start the discussion:  Do you believe in global warming? Class #6, Fri., Sept. 10, 20102

 “Global mean land-surface air temperature has risen about 1ºC (1.8ºF) in 100 years”  “Over the past 3 decades the rate of increase has accelerated to 0.27ºC (0.49ºF) per decade”  “Warming has occurred pretty much everywhere”  “There are no known natural forces...that might account for any but a small fraction of the warming” Class #6, Fri., Sept. 10, 20103

 “Sea level is currently rising at a rate of 2.6mm (0.1 inch) per year…equivalent to 26cm (10 inches) per century.”  “Two-thirds of cities with populations of more than 5 million people are vulnerable to the effects of rising sea level”  “concern that warming will increase the incidence of harsh and extended droughts”  “warming will increase the incidence of extreme weather events” Class #6, Fri., Sept. 10, 20104

 Increased emissions of greenhouse gases, particularly carbon dioxide and methane due to human activity, especially burning of fossil fuels  Greenhouse gases is a nickname given to gases which absorb and emit energy in the wavelength range known as the long wave or far infrared Class #6, Fri., Sept. 10, 20105

Reviewing Chapter 2 Class #6, Fri., Sept. 10, 20106

Fig. 2-7, p. 37 Class #6, Fri., Sept. 10, 20107

Fig. 2-10, p. 39 Class #6, Fri., Sept. 10, 20108

Fig. 2-9, p. 39 Class #6, Fri., Sept. 10, 20109

Fig. 2-13, p. 44 Class #6, Fri., Sept. 10,

Fig. 2-13, p. 44 Class #6, Fri., Sept. 10,