GEG 1301 Lecture Notes - Lecture 11: Throughfall, Evapotranspiration, Water Cycle
7 Feb 2018
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GEG 1301 Full Course Notes
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More water is evaporating from the ocean than what is emitted back into the oceans through precipitation. In the land it is the opposite, 62% evap and 80+% is brought back with precipitation evaporation from the ocean is moving and precipitating on the land. Nearly all of our fresh water is locked up as ice where few people live. (see pie graph) Drainage basins (watersheds: each drainage basin is separated from its neighbour by a topographic divide. Ocean watersheds in canada (where they drain: pacific (green, arctic (purple, hudson bay (yellow, atlantic (turquoise, gulf of mexico (brown) Instead of using volumes we use depths- taking the volume and dividing by an area. An advantage is that we talk about depths, which allows us to compare what is happening in a little basin to a big one or comparing to similar basins. Able to compare the behaviors of the basins.
