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  • 1980-1984  (4)
  • 1984  (4)
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  • 1980-1984  (4)
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  • 1
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    The satellite altimeter as a platform for observation of the oceanic mesoscale (1984)
    In:  Other Sources
    Details
    Publication Date: 2016-06-07
    Description: The use of the satellite radar altimeter as a platform to provide synoptic monitoring of the oceanic mesoscale is faced with two critical issues: removal of geoid error or contamination and election of optimum space/time sampling strategies. Long wavelength orbit determination errors are not critical problems for altimeter measurements of the basin scale circulation. Both issues are addressed within the constraints provided by orbital mechanics which dictates the laydown pattern of the satellite's groundtracks in space/time. Other issues which must be assessed are: adequate mission duration scales and the problems of geophysical noise sources and instrumental noise which degrade the effective alongtrack spatial resolution of the altimeter.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Marshall Space Flight Center Frontiers of Remote Sensing of the Oceans and Troposphere from Air and Space Platforms; p 389
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    A survey of oceanographic satellite altimetric missions (1984)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Consideration is given to the potential benefits of satellite altimetry measurements for oceanographic studies. The technical specifications and instrument payloads of past and future satellite altimetric satellite missions are described in a table. The missions include SKYLAB (1973); GEOS-3 (1975); and SEASAT (1978). Consideration is also given to the NROSS (1988); GEOSAT-4 (1984); and POSEIDON (1987-88) satellite missions.
    Keywords: OCEANOGRAPHY
    Type: Marine Geodesy (ISSN 0149-0419); 8; 1-4,
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Flight measurement and analysis of AAFE RADSCAT wind speed signature of the ocean (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The advanced aerospace flight experiment radiometer scatterometer (AAFE RADSCAT) which was developed as a research tool to evaluate the use of microwave frequency remote sensors to provide wind speed information at the ocean surface is discussed. The AAFE RADSCAT helped establish the feasibility of the satellite scatterometer for measuring both wind speed and direction. The most important function of the AAFE RADSCAT was to provide a data base of ocean normalized radar cross section (NRCS) measurements as a function of surface wind vector at 13.9 GHz. The NRCS measurements over a wide parametric range of incidence angles, azimuth angles, and winds were obtained in a series of RADSCAT aircraft missions. The obtained data base was used to model the relationship between k sub u band radar signature and ocean surface wind vector. The models developed therefrom are compared with those used for inversion of the SEASAT-A satellite scatterometer (SASS) radar measurements to wind speeds.
    Keywords: OCEANOGRAPHY
    Type: NASA-TM-85646 , L-15651 , NAS 1.15:85646
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Large-scale turbulence in the Jovian atmosphere (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Voyager 1 and 2 image pairs taken one rotation period (10 hr) apart are analyzed in order to compute average cloud velocities in the Jovian atmosphere, as well as to study the global energetics of the processes, in particular the sign and the magnitude of the energy transfer from the fluctuating to the mean flow. Particular attention is paid to the Great Red Spot phenomenon; it is suggested to have originated as a small vortex extracting energy from the surrounding flow. Since the eddy, presently in its near-equilibrium state, has reached a considerable size, while the mean shear lies close to that of a neutrally stable profile, it can be concluded that the presence of one large eddy precludes the growth of any others in the depleted mean shear.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Turbulence and chaotic phenomena in fluids; Sep 05, 1983 - Sep 10, 1983; Kyoto; Japan
    Format: text
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    NASA TECHNICAL REPORTS
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