GG101 Lecture Notes - Lecture 12: Hadley Cell, Polar Easterlies, Jet Stream
Document Summary
Gg101 lecture 12 hadley cell: bounded by equatorial low and subtropical high subtropical highs, between about 30 to 35 degrees north and south of the equator. Sunpolar low-pressure cells: polar front around 60 degrees north and south the westerlies collide with cold air traveling from the poles, frontal uplift resulting in more warm and moist coming from north. Upper atmospheric circulation: jet stream, rossby waves. Local winds: land-sea breezes, mountain-valley breezes, chinooks. Mountain-valley breezes: during the day warm air is forced up due to hot land mass, during the night, cool air goes down the valleys no longer a hot land mass. Chinook winds: chinook moist air coming from pacific ocean, encounters land mass and forced up, being forced up causes cooling and rain, air is dry. Goes back down and air mass warms: 20 degree temperature change in matter of hours, warm, dry air, california, alberta, europe, also known as santa ana winds in california and foehn winds in.
