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  • EARTH RESOURCES AND REMOTE SENSING  (670)
  • METEOROLOGY AND CLIMATOLOGY  (229)
  • Physics  (202)
  • 1975-1979  (1,101)
  • 1
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    High-resolution system for tropospheric wind and temperature profile measurements (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This paper briefly describes the Jimsphere/Jimsonde system and presents some possible applications of the system. As space vehicles became larger and more sophisticated, an improved method for obtaining wind-profile data had to be found. To satisfy this need, the FPS-16 radar/Jimsphere system was developed. The Jimsphere is an aluminized mylar spherical balloon 2 m in diameter. The balloon is under superpressure and is tracked with a high-precision radar system. The development of this detailed wind-profile system was started in 1963, and the present design was established in 1964. To improve the system, a program was initiated in 1965 to obtain high-resolution temperature data simultaneously with the wind-profile data.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Geophysical Research; 80; Sept. 20
    Format: text
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  • 2
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    Wind field measurement in the nonprecipitous regions surrounding severe storms by an airborne pulsed Doppler lidar system (1978)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: American Meteorological Society; vol. 59
    Format: text
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  • 3
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    Accuracy assessment system and operation (1979)
    In:  Other Sources
    Details
    Publication Date: 2016-03-08
    Description: The accuracy and reliability of LACIE estimates of wheat production, area, and yield is determined at regular intervals throughout the year by the accuracy assessment subsystem which also investigates the various LACIE error sources, quantifies the errors, and relates then to their causes. Timely feedback of these error evaluations to the LACIE project was the only mechanism by which improvements in the crop estimation system could be made during the short 3 year experiment.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Proc. of Tech. Sessions, Vol. 1 and 2; p 265-288
    Format: text
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  • 4
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    Preliminary data for the 20 May 1974, simultaneous evaluation of remote sensors experiment (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Several remote sensors were simultaneously used to collect data over the tidal James River from Hopewell to Norfolk, Virginia. Sensors evaluated included the Multichannel-Ocean Color Sensor, multispectral scanners, and multispectral photography. Ground truth measurements and remotely sensed data are given. Preliminary analysis indicates that suspended sediment and concentrated industrial effluent are observable from all sensors.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-X-72676
    Format: application/pdf
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  • 5
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    TERSSE. Definition of the total earth resources system for the shuttle era. Volume 10: (TOSS) TERSSE operational system study (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Economic benefits studies regarding the application of remote sensing to resource management and the Total Earth Resources for the Shuttle Era (TERSSE) study to outline the structure and development of future systems are used, along with experience from LANDSAT and LACIE, to define the system performance and economics of an operational Earth Resources system. The system is to be based on current (LANDSAT follow-on) technology and its application to high priority resource management missions, such as global crop inventory. The TERSSE Operational System Study (TOSS) investigated system-level design alternatives using economic performance as the evaluation criterion. As such, the TOSS effort represented a significant step forward in the systems engineering and economic analysis of Earth Resources programs. By parametrically relating engineering design parameters, such as sensor performance details, to the economic benefit mechanisms a new level of confidence in the conclusions concerning the implementation of such systems can be reached.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-147841
    Format: application/pdf
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  • 6
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    Combined magnetic and gravity analysis (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Efforts are made to identify methods of decreasing magnetic interpretation ambiguity by combined gravity and magnetic analysis, to evaluate these techniques in a preliminary manner, to consider the geologic and geophysical implications of correlation, and to recommend a course of action to evaluate methods of correlating gravity and magnetic anomalies. The major thrust of the study was a search and review of the literature. The literature of geophysics, geology, geography, and statistics was searched for articles dealing with spatial correlation of independent variables. An annotated bibliography referencing the Germane articles and books is presented. The methods of combined gravity and magnetic analysis techniques are identified and reviewed. A more comprehensive evaluation of two types of techniques is presented. Internal correspondence of anomaly amplitudes is examined and a combined analysis is done utilizing Poisson's theorem. The geologic and geophysical implications of gravity and magnetic correlation based on both theoretical and empirical relationships are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-144767
    Format: application/pdf
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  • 7
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    Project Fog Drops 5. Task 1: A numerical model of advection fog. Task 2: Recommendations for simplified individual zero-gravity cloud physics experiments (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A two-dimensional numerical model was used to investigate the formation of marine advection fog. The model predicts the evolution of potential temperature, horizontal wind, water vapor content, and liquid water content in a vertical cross section of the atmosphere as determined by vertical turbulent transfer and horizontal advection, as well as radiative cooling and drop sedimentation. The model is designed to simulate the formation, development, or dissipation of advection fog in response to transfer of heat and moisture between the atmosphere and the surface as driven by advection over horizontal discontinuities in the surface temperature. Results from numerical simulations of advection fog formation are discussed with reference to observations of marine fog. A survey of candidate fog or cloud microphysics experiments which might be performed in the low gravity environment of a shuttle-type spacecraft in presented. Recommendations are given for relatively simple experiments which are relevent to fog modification problems.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CR-2633 , M156
    Format: application/pdf
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  • 8
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    A statistical analysis of data extraction for land cover information from high-altitude and satellite images (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Land cover information from a 10 by 30 km test site in eastern Wisconsin extracted using 70 mm positive LANDSAT transparencies in an additive color viewer at a scale of 1:500,000 was compared with land cover information extracted using LANDSAT 9 x 9 inch positive transparencies at a scale of 1:1,000,000. Color infrared photography (NASA RB-57) at a scale of 1:60,000 provided ground truth for each land cover type. Interpretations were made for four land cover classes: 1) forest-brushland; (2) structures-barren land; (3) surface water; and (4) agricultural-open land. Statistical comparisons showed that neither method for the extraction of this data was clearly superior.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote sensing of earth resources. Volume 4; Mar 24, 1975 - Mar 26, 1975; Tullahoma, TN
    Format: text
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  • 9
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    Cloud-top parameters - A hail indicator (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Airborne photographic observations of four hail-producing storms are discussed. With the exception of one storm producing a tornadic event, the overshooting tops were nearly steady-state. The tops were consistently high and wide, reaching maximum heights within about 5 minutes of the initiation of hail. Measured updraft velocities in the turrets composing the overshooting top were 25 m/sec. The dimensions of the overshooting tops were sufficiently large to permit satellite observation.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Conference on Severe Local Storms; Oct 21, 1975 - Oct 23, 1975; Norman, OK
    Format: text
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  • 10
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    Proceedings of the 2nd Annual Workshop on Meteorological and Environmental Inputs to Aviation Systems: Executive Summary (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: A summarization of committee findings relative to the five topic areas of severe storms, turbulence, icing, visibility and lightning is given.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Tenn. Univ. Space Inst. Proc. of the 2nd Ann. Workshop on Meteorol. and Environ. Inputs to Aviation Systems; p 1-14
    Format: text
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