GEOG 272 Lecture Notes - Lecture 14: Tropical Wave, Polar Easterlies, Cold Front

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

Document Summary

Propel by wind: and influence the weather in diff locations, recall that these are really large systems. They are converging in the low pressure trough and elongated band of low pressure: a(cid:374)d u (cid:272)a(cid:374) see the(cid:396)e"s a defle(cid:272)tio(cid:374) (cid:272)uz of (cid:272)o(cid:396)eolis, a(cid:374)d that"s the fi(cid:396)st stafe of the (cid:449)a(cid:448)e (cid:272)(cid:455)(cid:272)le. U ha(cid:448)e the defle(cid:272)ted (cid:449)a(cid:396)(cid:373) ai(cid:396) fo(cid:396)(cid:373)i(cid:374)g (cid:374)o(cid:449) a (cid:449)a(cid:396)(cid:373) f(cid:396)o(cid:374)t he(cid:396)e as it"s (cid:373)o(cid:448)i(cid:374)g pole(cid:449)a(cid:396)d and starting that spin. And the cold air here encroaching on this area is producing a cold front. Conditions are very different: with the warm front, the cold dense air remains in contact with the surface and the warm air rises up over the cold air producing a gentle gradient. And these thin but very wide stratiform (cid:272)louds. The (cid:396)ai(cid:374) that"s p(cid:396)odu(cid:272)ed is fai(cid:396)(cid:455) light (cid:271)e(cid:272)ause the(cid:396)es (cid:374)ot (cid:373)u(cid:272)h (cid:448)e(cid:396)ti(cid:272)al de(cid:448)elop(cid:373)e(cid:374)t: cold front, u have cold air forcing its way under the warm air, creating a steep gradient.