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Geology 112

2.3 - Vertical Energy Balance of the Earth-Atmosphere System

QuestionAnswer
The sun's core.... 20,000,000 K, nuclear fision reactor converts hydrogen into heat energy
The photoshpere...... 6,000K, compared to the 300K on earth
Radiative heat transfer..... Anything above zero kelvin radiates, travels through vacuums at the speed of light
Planck's Law..... the hotter the surface, the shorter the wave hence , short wave long wave radiation
Lamda max(wave length i think) for solar radiation..... 0.5 mew meters (micro meters?)
Lamda-max for terrestrial radiation..... 10 mew meters
The amount of solar radiation that arrives at the top of the atmosphere (solar constant)...... 1,340 - 1370 W m-2, best estimate is 1367 W m-2
What happens to solar radiation as it passes through the atmosphere? Absorbed, Scattered, Reflected OR Transmitted (allowed to continue its journey uninterupted)
How much solar radiation is absorbed? 18% by ozone and oxgen molecules
High temperature in thermosphere because.... high molecular energy
The Troposphere is hot because... long wave radiation from below
Albedo is.... reflectivity of matter to solar radiation
Albedo trends.... Snow, cumulus clouds are about 0.8, deserts oceans and sea ice range from 0.05 - 5.0
Overall Albedo of earth.... 0.32
Amount of short wave radiation absorbed by the surface? 50%
How is the absorbed heat energy balanced? IR radiation (long wave), latent heat (evaporation), convection (smart heat)
Created by: shiftyleigh
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