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Author: Charles C. Gallagher Publisher: ISBN: Category : Atmospheric chemistry Languages : en Pages : 24
Book Description
A program has been initiated to measure the stratospheric content of NO, NO2, CO, SO2, CH4, NH3 and other trace gases which may influence our environment. The initial or baseline concentrations of these gases are being measured as a function of altitude and latitude. Subsequent measurements will indicate any time dependency in these concentrations and permit a possible correlation with increased Air Force stratospheric operations. Latitudes from Panama to Alaska and altitudes from 12 to 30 km will be investigated. (Author).
Author: Charles C. Gallagher Publisher: ISBN: Category : Atmospheric chemistry Languages : en Pages : 24
Book Description
A program has been initiated to measure the stratospheric content of NO, NO2, CO, SO2, CH4, NH3 and other trace gases which may influence our environment. The initial or baseline concentrations of these gases are being measured as a function of altitude and latitude. Subsequent measurements will indicate any time dependency in these concentrations and permit a possible correlation with increased Air Force stratospheric operations. Latitudes from Panama to Alaska and altitudes from 12 to 30 km will be investigated. (Author).
Author: Charles C. Gallagher Publisher: ISBN: Category : Atmospheric chemistry Languages : en Pages : 56
Book Description
Tri-sampler is used ... no variations with time within the stratosphere have been detected over the five-year duration of the flights. Stratospheric trace gas composition, cryognic (whole air sampling), oxides of nitrogen, and fluorocarbons--Abstract/Keywords.
Author: J. M. Calo Publisher: ISBN: Category : Aeronautics Languages : en Pages : 48
Book Description
A numerical model of a sampling tube used to conduct stratospheric air to the sampling point of a balloon-borne cryogenic whole air sampler, was developed to assess the potential effects of passage through the tube on alteration of species mixing ratios from those in the ambient. This model is based on the application of a general purpose, multireaction chemical kinetics code (CHEMSEN) to a 31 reaction (49 with heterogeneous wall loss), 23 species (41 with adsorbed or 'lost' constituents) stratospheric kinetic model, modified to take into account heterogeneous interactions with the tube wall. Effects of homogeneous gas phase chemistry and heterogeneous wall loss were estimated at three different altitudes: 15, 20, and 30 km. It was found that the gas phase chemistry was generally incapable of appreciably altering the sampled composition from that in the ambient. On the other hand, depending on the particular set of assumptions used, heterogeneous wall loss was found capable of imposing significant alterations on the sampled gas composition, particularly at altitudes above about 20 km, due to rapid radial diffusion. The expected tube wall temperature is shown to have a negligible effect on the homogeneous gas phase kinetics in the sampling tube.
Author: George F. Nolan Publisher: ISBN: Category : Balloons, Sounding Languages : en Pages : 28
Book Description
The ability to control balloon descent rates has been improved through use of a modified gas valve which has a range of openings. The descent rates obtained with this valve are more constant than those obtainable with the standard gas valve. Atmospheric temperature lapse rate and other thermal and aerodynamic influences are unquantifiable factors affecting balloon vertical motion, but are better compensated for when use is made of a variable opening gas valve. Even with this valve, slow descents on the order of 200 fpm or less will have oscillations with short periods of time when ascents and leveling off will occur. (Author).
Author: Charles C. Gallagher
Author: Charles C. Gallagher
Author: Charles C. Gallagher
Author: 
Author: 
Author: J. M. Calo
Author: George F. Nolan
Author: 
Author: United States. Defense Logistics Studies Information Exchange
Author: 
Author: Air Force Cambridge Research Laboratories (U.S.)