Loose Leaf For Explorations:  Introduction To Astronomy
Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 4, Problem 10TQ
To determine

The reason why the atmosphere layer containing ozone is much warmer than the levels above and below it.

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Earth's daylight surface disk absorbs about 1036 W per m2 from the Sun. Using 6400 km for the Earth's radius, how much of this radiative power is emitted by each square meter of the spherical Earth? Hint: Compare the ratio of the disk area to the spherical surface area.
2. Plasma oscillations in the ionosphere. The plasma density in the lower ionosphere has been measured during satellite reentry to be about a) 10¹8 m-³ at 50 km altitude, b) 10¹7 m-³ at 70 km and c) 10¹4 m²³ at 85 km. Use the formula for the electron plasma frequency to compute its numerical value for each of these three altitudes, AND state (we'll address this quantitatively later, when we get to EM wave propagation in plasmas) why the ionosphere is a relevant consideration for radio communications both on earth and between earth and interplanetary spacecraft.
Earth's daylight surface disk absorbs about 1047 W per m2 from the Sun. Using 6400 km for the Earth's radius, how much of this radiative power is emitted by each square meter of the spherical Earth? (Compare ratio of disk area to spherical surface area)
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