Download or read book Sonde Experiments for Comparative Measurements of Optical Turbulence written by J. H. Brown and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five different instruments were used in multiple experiments to measure atmospheric turbulence in the form of the refractive structure constant, C sub n squared. These included UHF radar, optical scintillometer, modified radiosondes, AFGL thermosondes, and aircraft micro-thermal measurements. Described here are the radiosonde and thermosonde electronics and their calibrations. The data reduction scheme is described and a brief program description is given. Although the different instruments gave measurements somewhat separated in space and time, first results show good agreement between the radar, scintillometer, and thermosonde measurements.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Middle Atmosphere Program written by S. A. Bowhill and published by . This book was released on 1986 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Middle Atmosphere Program written by and published by . This book was released on 1981 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Middle Atmosphere Program Papers presented at the URSI written by and published by . This book was released on 1981 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1982 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Nighttime Structure Model of Atmospheric Optical Turbulence C2 n Subscript Derived from Thermosonde and High Resolution Rawinsonde Measurements written by James H. Brown and published by . This book was released on 1993 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermosonde and UHF Radar Measurements of C2n at Westford Massachusetts July 1981 written by James H. Brown and published by . This book was released on 1984 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five different instruments were used in coordinated multiple experiments to measure atmospheric turbulence. C sub n squared, the optical refractive structure constant, was measured by thermosondes, UHF radar, stellar scintillometer, and aircraft mounted micro-thermal probes. Presented here are the results of 19 rawinsode flights. Also comparisons of eight thermosonde/radar profiles, one radar, scintillometer, thermosonode profile, and several aircraft profiles are presented. For the scales discussed here, good agreement is shown between radar, thermosonode, and scintillometer data. Worse agreement is obtained from aircraft measurements. A diurnal shift in the C2 profile is noted but no tropopause enhancement is found.

Download or read book Thermosonde C2n Measurements in Hawaii August 1982 written by James H. Brown and published by . This book was released on 1984 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eight AFGL thermosondes were flown from Mt. Haleakala, Hawaii to measure atmospheric turbulence in the form of the optical refractive index structure constant C sub n squared. Temperature and relative humidity comparisons between the AFGL instruments and standard GMD rawinsondes are presented. The AFGL instruments obtain greater temperature and humidity spatial resolution and consequently show finer structure in the profiles. A diurnal shift in the C sub n squared profile is noted as well as a tropopause enhancement. Coherence scales are calculated from the thermosonde data.

Download or read book Propagation and Imaging Through the Atmosphere written by and published by . This book was released on 1998 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook for MAP written by and published by . This book was released on 1989 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere written by Robert A. Fisher and published by . This book was released on 1989 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Possible Solar Heating Effects on Thermosonde Probes written by James H. Brown and published by . This book was released on 1989 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermosonde data reveals a diurnal daytime shift in measured levels of C square (n) in the free atmosphere. The shift is manifested in two ways. First, an apparent offset in the smallest measured values of C square (n) exists. Secondly, the curve of the average profile shows an enhancement over nighttime profiles. Related optical and radar measurements have indicated that differences between day and night probably exist, but because of limited instrumental resolution and altitude capabilities those results are inconclusive. Several hypotheses have been put forward in this paper concerning possible instrumental or solar based sources of data contamination. We have examined the possibility that solar radiation causes probe heating with subsequent instrumental effects. Calculation, computer simulation, and direct measurements have shown that the sun heats the body of the probe sensor a couple of degrees above the ambient and that the level of heating depends upon the solar aspect angle and magnitude and direction of air flow over the probe. A small but insignificant AC type effect can result from improper probe geometry or probe mismatch together with a coupling of solar heating with velocity turbulence. Transient and DC type effects can occur, but measured, processed, and transmitted root mean square C square (n) information is not likely to contain instrumental contamination.

Download or read book Models for the Aerosols of the Lower Atmosphere and the Effects of Humidity Variations on Their Optical Properties written by Eric P. Shettle and published by . This book was released on 1979 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Middle Atmosphere Program written by Chui-hsun Liu and published by . This book was released on 1989 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Geophysics and Space Environments written by U.S. Air Force Geophysics Laboratory and published by . This book was released on 1985 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Research Papers written by and published by . This book was released on with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: