ENVE 324 Lecture Notes - Lecture 1: Ice Crystals, Molar Mass, Westerlies
Document Summary
If the sun was adjacent to earth (like planet mercury) its temperature would be very high: earth only receives a small fraction of the sun"s radiant energy flux, because we are. 93,000,000 miles away: the earth is in thermal equilibrium with the universe (earth radiates energy back to space, energy balance, 100% total sunlight arriving at earth. 30% is reflected back to space: 51% absorbed by land and oceans, 19% absorbed by atmosphere. 6% earthlight radiated to space by land and oceans. Stratosphere, "layers" (buoyantly stable, no motion: temperature increasing, altitude increasing, mesosphere, "middle" (strong zonal winds, temperature decreasing, altitude increasing, negative slope, unstable, thermosphere, "hot" (aurora occur here, temperature increasing, altitude increasing. Subsiding air: cw = north, ccw = south. Friction: air motion is zero at zero altitude, presence of motionless solid surfaces, retards all moving fluids. "no-slip" condition applies to all fluids that interact with solid surfaces: viscous region = change in velocity.
