EVSC 1450 Lecture Notes - Lecture 10: Radiative Forcing, Solar Constant, Cloud Feedback

• School: University of Virginia
• Department: Environmental Sciences
• Course: EVSC 1450
• Professor: Lawrence Deborah

Document Summary

Radiative forcing: change in top of atmosphere (out of space) energy balance before climate has adjusted. While this is going on, the distance between e in and e out is shrinking. Change in e in- change in e out. Delta e in minus delta e out. Must calculate how both change, then take the difference. Remember: top of atmosphere energy balance before climate system adjusts. What changes if we alter ghgs (greenhouse gase) Remember: before the climate system adjusts (in this case, the. Calculate the radiative forcing for earth of a 5% increase in s. Change in e in - change in e out. Increase s by 5% -> 1360*1. 05 =1428. Then we calculate s(1-a)/4 where s = 1428. New e in = 1428(1-0. 3)/4 = 250. Original e in = 238, new e in is 250. E in - e out = 250-238 = 12. Assume earth: original albedo = 0. 3 and s = 1360.