Anomalous Molecular Rotation and the Temperature of the Upper Atmosphere

1950 ◽  
Vol 79 (4) ◽  
pp. 619-626 ◽  
Author(s):  
Lewis M. Branscomb
Keyword(s):  
Molecular Rotation ◽  
Upper Atmosphere

Microwave studies of the stratosphere and mesosphere

1965 ◽  
Vol 288 (1415) ◽  
pp. 556-557
Keyword(s):  
Magnetic Dipole ◽  
Wavelength Range ◽  
Dipole Moments ◽  
Molecular Rotation ◽  
Upper Atmosphere ◽  
Electromagnetic Spectrum ◽  
Frequency Range ◽  
Frequency Limit ◽  
Atmospheric Physics ◽  
Microwave Techniques

The purpose of this note is to draw attention to a region of the electromagnetic spectrum that has so far received very little attention as far as studies of the upper atmosphere are concerned. This is the region which lies in the frequency range of about 20 to 300 Gc/s (or corresponding wavelength range of 15 to 1 mm). It is a part of the spectrum where conventional microwave techniques can still be used (300 Gc/s represents the present approximate upper frequency limit for these techniques), but which contains frequencies corresponding to molecular rotation lines of a number of gases that possess permanent electric or magnetic dipole moments. Among these gases are several which are important to atmospheric physics. In particular the absorption due to the pressure-broadened molecular rotation lines of O 2 and H 2 O is sufficient to render several parts of this frequency range useless as far as earth-bound communications are concerned, and to seriously affect much of the remainder of it.

Influence of the upper atmosphere inhomogeneity on acoustic gravity wave propagation

2012 ◽  
Vol 18 (4(77)) ◽  
pp. 30-36 ◽  
Author(s):  
Y.I. Kryuchkov ◽  
◽  
O.K. Cheremnykh ◽  
A.K. Fedorenko ◽  
◽  
...  
Keyword(s):  
Wave Propagation ◽  
Gravity Wave ◽  
Upper Atmosphere ◽  
Acoustic Gravity Wave

Could climate engineering save the Greenland Ice Sheet?

2016 ◽  
Author(s):  
Patrick J. Applegate ◽  
K. Keller
Keyword(s):  
Sea Level Rise ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Sea Level ◽  
Computer Model ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Upper Atmosphere ◽  
Climate Engineering ◽  
Air Temperatures

Engineering the climate through albedo modification (AM) could slow, but probably would not stop, melting of the Greenland Ice Sheet. Albedo modification is a technology that could reduce surface air temperatures through putting reflective particles into the upper atmosphere. AM has never been tested, but it might reduce surface air temperatures faster and more cheaply than reducing greenhouse gas emissions. Some scientists claim that AM would also prevent or reverse sea-level rise. But, are these claims true? The Greenland Ice Sheet will melt faster at higher temperatures, adding to sea-level rise. However, it's not clear that reducing temperatures through AM will stop or reverse sea-level rise due to Greenland Ice Sheet melting. We used a computer model of the Greenland Ice Sheet to examine its contributions to future sea level rise, with and without AM. Our results show that AM would probably reduce the rate of sea-level rise from the Greenland Ice Sheet. However, sea-level rise would likely continue even with AM, and the ice sheet would not regrow quickly. Albedo modification might buy time to prepare for sea-level rise, but problems could arise if policymakers assume that AM will stop sea-level rise completely.

Development of Models for Infrared Emission in the Upper Atmosphere.

1986 ◽  
Author(s):  
Peter P. Wintersteiner ◽  
Robert A. Joseph
Keyword(s):  
Infrared Emission ◽  
Upper Atmosphere

The Upper Atmosphere Composition Spectrometer.

1986 ◽  
Author(s):  
David C. Kayser ◽  
William T. Chater ◽  
Charles K. Howey ◽  
James B. Pranke
Keyword(s):  
Upper Atmosphere ◽  
Atmosphere Composition
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