GEOG 272 Lecture Notes - Lecture 7: Sensible Heat, Latent Heat, Subsolar Point

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

Document Summary

Lecture 7: deserts have higher amounts of insolation compare to others in same latitude. Difference is surface is a desert compared to other places that have water and vegetation. Because there is little (cid:272)loud (cid:272)o(cid:448)eri(cid:374)g the desert, there"s less loss of insolation. More insolation reaches the surface: high i(cid:374)solatio(cid:374) (cid:271)ut lo(cid:449) (cid:374)et radiatio(cid:374) (cid:271)e(cid:272)ause there"s little (cid:449)ater (cid:448)apour i(cid:374) the air, so (cid:374)ot a lot for evaporation. Desert plants evolved to hold onto the water and not release it. Less counter radiation and more ground radiation escaping: at the poles, they receive the most insolation in june solstice . at the north pole u have 24 hr day. So although the angle is less tha(cid:374) 90 degrees, there"s 24 hrs of i(cid:374)solatio(cid:374) (cid:271)ei(cid:374)g re(cid:272)ei(cid:448)ed. It"s (cid:374)ot as i(cid:374)te(cid:374)se as tropi(cid:272) of (cid:272)a(cid:374)(cid:272)er (cid:894)su(cid:271)solar poi(cid:374)t(cid:895) (cid:271)ut photoperiod is rl(cid:455) lo(cid:374)g: we ha(cid:448)e (cid:374)egati(cid:448)e (cid:374)et radiatio(cid:374) e(cid:448)e(cid:374) if the su(cid:374) still has(cid:374)"t set. The a(cid:374)gle of radiatio(cid:374) is (cid:448)er(cid:455) (cid:448)er(cid:455) low.