1. Lecture 11 - 1 ERS 482/682 (Fall 2002) Energy budget ERS 482/682 Small Watershed Hydrology

2. Lecture 11 - 2 ERS 482/682 (Fall 2002) Global energy budget Figure 3-2 (Dingman 2002)

3. Lecture 11 - 3 ERS 482/682 (Fall 2002) © The Exploratorium, www.exploratorium.eduwww.exploratorium.edu Forests  Transpiration uses CO 2  Net atmospheric absorption of energy  Vehicles create CO 2  Net atmospheric absorption of energy 

4. Lecture 11 - 4 ERS 482/682 (Fall 2002) South Cascade Glacier, WA © The Exploratorium, www.exploratorium.eduwww.exploratorium.edu In the hydrologic cycle:  ice in glaciers water in oceans  water temperature in oceans  air temperature  water temperature in oceans 

5. Lecture 11 - 5 ERS 482/682 (Fall 2002) Figure 10.3 (Schlesinger 1997)

6. Lecture 11 - 6 ERS 482/682 (Fall 2002) © The Exploratorium, www.exploratorium.eduwww.exploratorium.edu

7. Lecture 11 - 7 ERS 482/682 (Fall 2002) http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=10302  ice  albedo  insulation

8. Lecture 11 - 8 ERS 482/682 (Fall 2002) Implications – model predictions Increased humidity –Faster movement through hydrologic cycle Higher steady-state air temperature Unequal effects –Most temperature change at high latitudes –Oceans warm more slowly than land Could be severe drought as transition occurs