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  • 1
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    The interplanetary and near-Jupiter meteoroid environments (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The meteoroid penetration detectors on the Pioneer 10 spacecraft recorded 67 meteoroid penetrations through the 25-micron stainless steel test material while the spacecraft was between 1.0 and 5.1 AU. Ten of these penetrations occurred during the encounter with Jupiter. The cumulative spatial density of meteoroids with masses greater than 2 nanograms has been calculated from these data for interplanetary space and for the near-Jupiter space. The spatial density is found to be essentially constant in interplanetary space between 1 and 5 AU, approximately 1 meteoroid per cubic km, and 1-2 orders of magnitude greater near Jupiter. There was no increase in the spatial density of meteoroids in the asteroid belt and hence no evidence that there is a significant asteroidal component of 2-nanogram meteoroids. It is uncertain whether the meteoroids detected near Jupiter were in orbit about Jupiter or were gravitationally focused toward the planet from solar orbits.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 79; Sept. 1
    Format: text
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  • 2
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    Interplanetary and near-Jupiter meteoroid environments - Preliminary results from the meteoroid detection experiment (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Data on interplanetary and near-Jupiter micrometer-sized particle encounters from the meteoroid-detection experiment on Pioneer 10 indicate that Jupiter is much 'dustier' than interplanetary space. Whereas the near-earth particulate flux showed very little increase over the interplanetary flux, the near-Jupiter penetration flux was over two orders of magnitude higher than the interplanetary flux.
    Keywords: SPACE SCIENCES
    Type: Science; 183; Jan. 25
    Format: text
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  • 3
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    Intercomparison of standard resolution and high resolution TOVS soundings with radiosonde, lidar, and surface temperature/humidity data (1990)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: One objective of the FIRE Cirrus IFO is to characterize relationships between cloud properties inferred from satellite observations at various scales to those obtained directly or inferred from very high resolution measurements. Satellite derived NOAA-9 high and standard resolution Tiros Operational Vertical Sounder (TOVS) soundings are compared with directly measured lidar, surface temperature, humidity, and vertical radiosonde profiles associated with the Ft. McCoy site. The results of this intercomparison should be useful in planning future cloud experiments.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: FIRE Science Results 1989; p 491-495
    Format: application/pdf
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  • 4
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    A numerical technique for the calculation of cloud optical extinction from lidar (1993)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A simple numerical algorithm which calculates optical extinction from cloud lidar data is presented. The method assumes a two-component atmosphere consisting of 'clear air' and cloud particulates. 'Clear air' may consist of either molecules only or a mix of molecules and atmospheric aerosols. For certain clouds, the method may be utilized to provide an estimate of the cloud-atmospheric parameter defined as the ratio of the cloud volume backscatter coefficient to the cloud extinction coefficient divided by the atmospheric volume backscatter coefficient at a given altitude. The cloud-atmospheric parameter may be estimated only from cloud data from which the optical thickness may reliably be used as a constraint on the numerical solution. This constraint provides the additional information necessary to obtain the cloud-atmospheric parameter. Conversely, the method may be applied to obtain cloud extinction and optical thickness from lidar cloud soundings if an estimate of the cloud-atmospheric parameter is available.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: The FIRE Cirrus Science Results 1993; p 67-70
    Format: application/pdf
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  • 5
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    CSU FIRE 2 cirrus field experiment: Description of field deployment phase (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The Colorado State University (CSU) surface observing systems are described. These systems were deployed at the Parsons, Kansas site during the FIRE 2 Cirrus Special Observing Period (SOP) from 13 Nov. - 7 Dec. 1991. The geographical coordinates of the site containing most of the CSU instrumentation are 37 deg. 18 min N. latitude and 96 deg. 30 min. W. longitude; site elevation was 269 meters. In addition, one surface meteorological and broadband flux observing site was maintained at the Tri City Airport which is approximately 18 miles due west of Parsons (37 deg. 20 min. N. latitude, 95 deg. 30 min. 30 sec. W. longitude). A map of the locations of the CSU deployment sites is presented. At the main Parsons site, the instrumentation was located directly adjacent to and north of a lake. Under most cirrus observing conditions, when the wing had a significant southernly component, the lake was upwind of the observing site. The measurements and observations collected during the experiment are listed. These measurements may be grouped into five categories: surface meteorology; infrared spectral and broadband measurements; solar spectral and broadband measurements; upper air measurements; and cloud measurements. A summary of observations collected at the Parsons site during the SOP are presented. The wind profiler, laser ceilometer, surface meteorology and surface broadband radiation instrumentation were operated on a continuous basis. All other systems were operated on an 'on demand' basis when cloud conditions merited the collection of data.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-193162 , NAS 1.26:193162 , FIRE-SER-8 , ATMOSPHERIC-SCI-PAPER-506
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  • 6
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    Statistical analysis of meteoroid penetration data including effects of cutoff (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Statistical analysis of meteoroid penetration data including effects of size cutoff using satellite data
    Keywords: SPACE SCIENCES
    Type: NASA-TN-D-5668 , L-5944
    Format: application/pdf
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