Atmosphere

In: Business and Management

Submitted By oseroman
Words 564
Pages 3
Assignment 1
1. What are greenhouse gases and why do they affect the climate? At what wavelength band(s) of the electromagnetic spectrum do they absorb radiation? In your answer, give three examples of greenhouse gases and their wavelengths of absorption.
Greenhouse gases are gases in the atmosphere that allow light through but block infrared radiation that is reflected off of Earth’s surface, not allowing the heat to escape and thus causing long term heating effects on our climate. The greenhouse gases absorb some incoming light but the greenhouse effect is cause by the absorption of infrared radiation on its way out to space. Three greenhouse gases are water vapour methane and carbon dioxide. Water vapour has its strongest absorption at wavelengths of 2.9, 1.95, 1.45, but also absorbs at many other wavelengths. Methane absorbs radiation between 1.41-4.24 micrometers whereas carbon dioxide absorbs between 14-16 micrometers.
2. An environmental engineer invents a new machine that removes carbon dioxide (CO2) from the air using hydrogen fuel cells. In the process, however, a large amount of water vapour (H2O) is released back to the atmosphere. Explain three plausible impacts that this machine could have on the global climate (some of which may counteract each other).
The first effect would be the climate cooling. The removal of the carbon dioxide means that there would be less greenhouses gases and this would result in less radiation being trapped thus causing the temperature to cool. However if a by-product is water vapour, which is a greenhouse gas, then this would increase the amount of radiation that is trapped and cause the temperature to rise. Also since a large amount of water vapour is released this would result in more precipitation.
3. Explain why air density, pressure, and temperature all tend to decrease as one ascends through the…...

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