... Baker skiTamarack, CA, January, 19 11 Silverlake, Boulder, COApril 14 15 , 19 21 Bagdad, CAAugust 19 09 to May 19 12 11 12 area, WA ,19 98sunlight that reaches the surface is reflected by snow andice, ... period, the earthbegan to cool slightly over the next 25 years or so. In the late 19 60s and 19 70s, the cooling trend ended over mostof the Northern Hemisphere. During the 19 70s and into the 19 80s, ... 41 cm (16 in.)Sacramento, California, 38°NClimate: Csa6 15 8 10 8 10 2025202540506070805 10 15 20255 10 15 20254050607080Mean annual temperature: 15 °C (59°F)FIGURE 13 .18 Comparison...