GEOG 3610 Lecture Notes - Lecture 6: Heat Flux, Sensible Heat, Shortwave Radio
28 Mar 2018
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How reflective the surface is (higher albedo=more reflective, low absorption of sunlight, gradual surface warming ex. Meso-scale affects: lake effect snow, air from lake blows over land, condenses and snows, controls, elevation. Local-scale affects: vegetation and canopy interception, canopy affects, wind speed and surface roughness- wind redistributes, changes nature and density of snow pack, surface energy exchange, snow cover decreases as function of canopy density (plant. Interception type, greater thickness=less snow on ground: highest snow depths in clearings with diameters less than 20 x (surrounding tree height, slop and aspect- effects energy budget, and exposure to wind and redistribution. Snow water equivalent (swe): depth of water equivalent due to the complete melting of a unit area of snow, swe (kg/m2)= snow density(kg/m3) x snow depth (m) Snow density: typical snow densities: 0. 07 to 0. 15 for freshly fallen snow, density increases over the season due to metamorphism. Snow pack: older snow that"s been compressed.
