By James A. Coakley Jr., Ping Yang

A first-look at radiative move in planetary atmospheres with a specific concentrate on the Earth's surroundings and weather. The textbook covers the fundamentals of the radiative move of sun, treating absorption and scattering, and the move of the thermal infrared acceptable for neighborhood thermodynamic equilibrium, absorption and emission. The examples integrated express how the ideas of the radiative move equation are utilized in distant sensing to probe the thermal constitution and composition of planetary atmospheres. This motivates scholars by means of best them to a greater figuring out of and appreciation for the computer-generated numerical effects.
Aimed at upper-division undergraduates and starting graduate scholars in physics and atmospheric sciences, the publication is designed to hide the essence of the fabric in a 10-week direction, whereas the fabric within the not obligatory sections will facilitate its use on the extra leisurely speed and in-depth concentration of a semester path.

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Example text

At the tropopause, the troposphere and surface together are also in radiative equilibrium. The sunlight absorbed by the troposphere and Earth’s surface balances the net infrared radiation emitted upward at the tropopause. The figure identifies the primary contributors of absorption and emission in the atmosphere. 7. 8a shows calculated spectra for the incident sunlight at the top of the atmosphere and at the surface when cloud-free and when overcast by cirrus. S. Standard Atmosphere. 7. 1. The visible optical thickness of the cirrus is 2.

6. Derive equations for a two-layered, window-gray, radiative equilibrium model. Give the layers arbitrary emissivities ????1 > 0 and ????2 > 0 with ????1 ≠ ????2 . Show algebraically that for radiative equilibrium, the temperature of the upper atmospheric layer must be less than that of the lower layer and the temperature of the surface must be greater than that of the lower atmospheric layer. Consequently, within the simple window-gray radiative equilibrium model, temperature must fall with increasing altitude.

The eruption caused a perturbation in the albedo that initially amounted to a 4 W m−2 decrease in the sunlight absorbed by the Earth. 30 the global average albedo and ???? ′ the change in the albedo required to produce the 4 W m−2 decrease in absorbed sunlight at t = 0. Assume ????a = 2 years for the residence time of the haze layer that formed in the stratosphere after the eruption. Use the following steps to obtain a time-dependent solution for the Earth’s radiating temperature. a. Expand the Stefan–Boltzmann law in the radiative equilibrium model about its initial equilibrium state.

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