Thermodynamics Atmosphere

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Presentation transcript:

Thermodynamics Atmosphere Solar Radiation and the Global Budget

Solar and Terrestrial Radiation Stefan – Boltzmann Law

Solar and Terrestrial Radiation Stefan – Boltzmann Law Estimate the solar constant

Solar and Terrestrial Radiation Wien’s law What is max?

Solar and Terrestrial Radiation Wien’s law What would be the temperature of the Earth (assuming black body)?

Solar and Terrestrial Radiation Wien’s law What would be the temperature of the Earth (assuming a 30% albedo)?

Solar and Terrestrial Radiation Wien’s law What is the mean temperature of the Earth (at the surface)?

Solar and Terrestrial Radiation Wien’s law What is max for the Earth?

Solar and Terrestrial Radiation Wien’s law What is max for the Earth?

Distance from the sun

Distance from the sun What is the impact on the solar constant?

Tilt of the Earth

Tilt of the Earth Axis & Day length

Tilt of the Earth Axis & Altitude of the sun

Altitude of the Sun Spread of light Amount of Atmosphere

Tilt of the Earth Axis & Seasons Total amount of energy

Day of the Year & Altitude & Length of day Difference in radiation at solar peak between summer and winter solstice?

Latitude & Length of day & Altitude

Altitude of the Sun Hour of the day

Latitude & Seasons https://www.e-education.psu.edu/meteo469/node/202

Mechanisms of heat transfer

Mechanisms of heat transfer

Thermodynamic properties of water

Shortwave radiation Absorption, reflection and scattering

Shortwave radiation: albedo

Shortwave budget How do you obtain the incoming solar radiation?

Earth’s Energy budget: overall balance How do you obtain the incoming solar radiation?

Earth’s Energy budget: overall balance What about the entropy balance?

Latitudinal heat balance

Earth’s Energy budget: the surface balance

Absorption of radiation

Earth’s Energy budget: the atmosphere balance