21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 9.2, Problem 9.2CYU
To determine
The main greenhouse gases present in the atmosphere of terrestrial planets.
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Question 2: Planet Mars
Planetary Attribute
Albedo
Radius
Gravitational acceleration
Mean distance from sun
Surface pressure
Symbol
a
R (km)
g (m/s²)
D (km)
Po (kPa)
Earth
0.29
6378
9.8
150 x 106
101
Mars
0.25
3395
3.7
228 x 106
0.6
(a) Calculate an appropriate value for shortwave solar radiation (SM) incident at the top of the
Martian atmosphere (answer in W/m²). The corresponding value for Earth, SE = 1360 W/m².
(b) Estimate the average surface temperature on Mars (answer in degrees Kelvin) using a
suitable radiative energy balance. The greenhouse effect can be neglected for Mars.
(c) Estimate the mass of the Martian atmosphere (answer in kg).
On the surface of the moon where local gravity is 1.67m/s^2, 4.4 kg of gas occupy a volume of 1.2m^3.Determine:a. Specific volume of the gas in m^3/kgb. density in g/cm^3c. Specific weight in lb/ft^3
In general what would be the most effective means for making the atmosphere more unstable?
Warming the mid-levels (e.g., 500mb level) and cooling the surface.
Cooling the mid-levels (e.g., 500mb level) and warming the surface.
Warming both the mid-levels (e.g., 500mb level) and the surface.
Cooling both the mid-levels (e.g., 500mb level) and the surface.
Chapter 9 Solutions
21st Century Astronomy
Ch. 9.1 - Prob. 9.1CYUCh. 9.2 - Prob. 9.2CYUCh. 9.3 - Prob. 9.3ACYUCh. 9.3 - Prob. 9.3BCYUCh. 9.4 - Prob. 9.4CYUCh. 9.5 - Prob. 9.5CYUCh. 9 - Prob. 1QPCh. 9 - Prob. 2QPCh. 9 - Prob. 3QPCh. 9 - Prob. 4QP
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