Biosphere Flashcards
biosphere
hydrosphere/cryosphere/lithosphere, where life exists, self-sustaining,
radiation/energy balance
70% coming from sun is absorbed by atmosphere, rest is reflected back to space
greenhouse effect
water vapour/co2/methane absorb radiation that is re radiated
causes of differences in seasonality/climate
high latitudes have radiation distributed over larger area so less intense radiation, when radiation travels through tilt it passes through more of the atmosphere so absorbed more and less radiation, causes extremes (tropics/poles), poles have more variety
why is northern hem warmer
more land in northern which heats up faster than ocean
atmosphere circulation
radiation heats air which rises as less dense, as it moves it loses heat and becomes more dense and moves to ground, if air is over water it can pick up water and precipitate
atmosphere cells
cause climate bands, rising air comes from equator and provides warm air
coriolis
deflection of air/water due to earths rotation/tilt, right in northern (clockwise)
ocean circulation
prevailing winds drive circulation, oceans transport heat/nutrients
milankovitch
shape of orbit/tilt/direction of rotation