ESS200A
Prof. Jin-Yi Yu
Greenhouse Effect
heat
sunlight
§ allow sunlight to come in
§ trap heat inside the house
Greenhouse
Atmosphere
S/4 * (1-A)
sTS4
sTA4
sTA4
For  the atmosphere:
2* sTA4 = sTS4  è TA= 2**¼  Te
For Earth’s surface:
S/4*(1-A)  + sTA4 = sTS4
è   TS  =  303K