Variations Of Density And Wind With Time At Altitudes 30 To 60 Km

Author : Arthur J. Kantor
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.27/5 ( download)

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Download or read book Variations of Density and Wind with Time at Altitudes 30 to 60 Km written by Arthur J. Kantor and published by . This book was released on 1981 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information on the horizontal and vertical distributions of density and wind and their variation with time is important in the design and operation of aerospace vehicles as well as to atmospheric scientists seeking a more precise description of atmospheric structure. Consequently, we have estimated the variations of density and wind at seven locations for periods of from 1 to 72 h between altitudes 30 and 60 km. In the tropics density variations with time are dominated by a diurnal cycle. At other latitudes the diurnal cycle is too small to detect in a lag variability study based on Meteorological Rocket Network observations because the diurnal components are obscured by random observational errors as well as day-to-day changes in synoptic conditions. In summer there is only a small increase in rms variability of density with time at middle and high latitudes; rms values range from 20 to 4 percent for periods up to 72 h. In winter there is a marked change in the rms variability with time at midlatitudes where rms values increase with time, approaching the climatic variability of 5 or 6 percent in 72 h. At high latitudes rms variations increase more rapidly with time and reach 8 or 9 percent within 72 h. Analyses of midlatitude wind data between 30 and 60 km confirm the presence of a well-defined diurnal wind oscillation. It reaches a maximum amplitude of 10 or 11 m/sec between 50 and 55 km; amplitudes tend to be slightly smaller in tropical and polar regions.

Author : Allen E. Cole
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.45/5 ( download)

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Download or read book Kwajalein Reference Atmospheres, 1979 written by Allen E. Cole and published by . This book was released on 1979 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.34/5 ( download)

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Download or read book Air Force Surveys in Geophysics written by and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Allen E. Cole
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.91/5 ( download)

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Download or read book Interlevel Correlations of Temperature and Density, Surface to 60 Km written by Allen E. Cole and published by . This book was released on 1980 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statistical techniques have been developed which can be used to determine the effect of density and temperature on the trajectories of reentry vehicles for altitudes between the surface and 60 km. Arrays of monthly means and standard deviations of density and temperature at 2-km intervals of altitude to 60 km, together with interlevel coefficients of correlation of density with density and temperature, are provided for the mid-season months (January, April, July, October) at 10 locations between latitudes 8 deg. and 64 deg. N. These data are in format that can be easily used to estimate the distributions of vertical density and temperature gradients and the effects of day-to-day density variations on the trajectories of reentry vehicles.

Author : Arthur J. Kantor
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.13/5 ( download)

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Download or read book Time and Space Variation of Density in the Tropics written by Arthur J. Kantor and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A preliminary analysis of the time and space variability of atmospheric density over tropical regions was developed and is presented herein. Emphasis is placed on horizontal distances out to 200 nmi (370 km) and on time periods of from 1 to 12 hr. Estimated rms differences to 200 nmi and the rms variability of density with time are provided for altitudes up to 60 km.

Author :
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.38/5 ( download)

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Download or read book Environmental Research Papers written by and published by . This book was released on with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 :
Total Pages : 952 pages
Book Rating : 4.05/5 ( download)

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Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Arthur J. Kantor
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.98/5 ( download)

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Download or read book Profiles of Temperature and Density Based on 1- and 10-percent Extremes in the Stratosphere and Troposphere written by Arthur J. Kantor and published by . This book was released on 1984 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertical profiles of temperature and density have been developed based on 1 and 10 percent warm and cold temperatures and 1 and 10 percent high and low densities occurring at the worst locations in the world (except Antarctica) during the worst month. The profiles, from the surface to 80 km, are based on extremes that occur at 5, 10, 20, 30, and 40 km. For example, one of the temperature profiles developed was based on a 10 percent warm temperature at an altitude of 20 km; thus, it represents meteorological conditions typically associated with this extreme. Ten such warm profiles (5 levels by 2 percentiles) and 10 cold profiles have been constructed from 14 years of rawinsonde and rocketsonde observations. Internally consistent hydrostatic profiles of density associated with these temperature profiles are provided. Twenty analogous density (and associated temperature) profiles also have been developed from extreme densities occurring at these altitudes. Thus, a set of realistic profiles (rather than envelopes) of temperature and density associated with extremes at specified levels in the troposphere and stratosphere are available for altitudes up to 80 km. Keywords: Atmospheric profiles; Extreme atmospheres; Temperature profiles; Density profiles; Thermodynamic properties.

Author : Air Force Cambridge Research Laboratories (U.S.)
Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.09/5 ( download)

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Download or read book Handbook of Geophysics and Space Environments written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1965 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is a comprehensive collection of data, formulas, definitions, and theories concerning the natural environment. It was written by scientists of the Air Force Cambridge Research Laboratories (AFCRL) which, in 1976, became the Air Force Geophysics Laboratory (AFGL). It was designed to serve a broad spectrum of users: the planner, designer, developer, and operator of aerospace systems; the scientist who will find the tables and figures a convenient reference in his own field; the specialist who needs environmental data in another discipline; and science minded people who seek a summary of space-age environmental research. Revisions of individual chapters and sections of this handbook will be published as additional environmental research efforts pay off in new knowledge.

Author : Lloyd V. Mitchell
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.81/5 ( download)

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Download or read book Variability of the Monthly Mean Zonal Wind, 30-60 Km written by Lloyd V. Mitchell and published by . This book was released on 1970 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an analysis of the monthly mean zonal wind and the standard deviation of the zonal wind about the monthly mean. The data are presented in tables and the analyses in time (months)-altitude (30 to 60 kilometers) cross-section as well as profiles for selected levels. The variability of the monthly mean zonal wind, 30 to 60 kilometers, is discussed by individual station. Also, there is a discussion of the altitudinal, latitudinal, monthly, and seasonal variations with a designation of four seasons - winter (dominated by westerlies but with occasional easterlies). November through March; spring transition of westerlies to easterlies, April and May; summer (persistent easterlies), June through August; and fall transition of easterlies to westerlies, September and October.