GEOG 272 Lecture Notes - Lecture 6: Rayleigh Scattering, Mie Scattering, Subsolar Point

• School: Concordia University
• Department: Geography
• Course: GEOG 272
• Professor: Dr.Catherine Moore

Document Summary

Rapid review of last class: hot sun gives off short waves, all of the solar radiation is short wave, peak of solar radiation is in blue light of the spectrum. 0. 05 micrometers: the amount of insolation arriving at given surface varies with 2 factors. Intensity at which radiation is releaed, much more emissive power for the hot sun. Whe(cid:396)eas (cid:449)he(cid:374) su(cid:374) is at highe(cid:396) a(cid:374)gle, (cid:449)he(cid:374) it"s pe(cid:396)pe(cid:374)di(cid:272)ula(cid:396) to the surface all of its solar radiation is concentrated over a small area. But (cid:449)he(cid:374) su(cid:374) is highe(cid:396) i(cid:374) the sk(cid:455), it"s sho(cid:396)te(cid:396) path. Less a(cid:271)so(cid:396)optio(cid:374) a(cid:374)d s(cid:272)atte(cid:396) : the second factor influencing amount of insolation is photoperiod. Photo for ight, period for length of time. The longer the photoperiod, the longer you have insolation to arrive at the surface. The shorter the photoperiod, less opportunity for insolation to arrive at the surface.