Aerodynamic resistance in upper atmosphere: case of the last stage Delta rocket fall in Argentina

2016 ◽  
Vol 35 (3) ◽  
pp. 727-737
Author(s):  
Laura D. Moreschi ◽  
Walkiria Schulz
Keyword(s):  
Aerodynamic Resistance ◽  
Upper Atmosphere ◽  
Last Stage

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

Posesivní Genitiv Redivivus

2018 ◽  
Vol 69 (3) ◽  
pp. 497-501
Author(s):  
Oldřich Uličný
Keyword(s):  
Written Form ◽  
Last Stage ◽  
Agglutinative Language ◽  
Language Type

Abstract In the contemporary Czech, in both spoken and especially in written form, possessive adjectives are replaced by possessive genitives, which are originally colloquial constructions only. In the last stage of this development, the postpositive genitive changes into prepositive: Klárčina maminka, maminka Klárky, Klárky maminka (‘Klárka’s mother’). The Czech language thus loses another means of inflection and gets closer to an agglutinative language type. This change (deflective tendency) is also supported by the loss of introflexion, i.e. the loss of morphophonological alternations, in our example k – č, in other cases r – ř, g – ž, ch – š, etc. (Klárčin – Klárky [‘Klárka’s’], sestra – sestřin [‘sister’s’], Olga – Olžin [‘Olga’s’] etc.).

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
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