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  • 1
    Monograph available for loan
    Monograph available for loan
    San Diego [u.a.] : Acad. Press
    Associated volumes
    Call number: M 00.0582 ; 5/M 03.0088
    In: International geophysics series
    Type of Medium: Monograph available for loan
    Pages: xi, 463 S.
    ISBN: 0122695453
    Series Statement: International geophysics series 69
    Classification: A.1.9.
    Location: Upper compact magazine
    Location: Reading room
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 2
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    In:  Other Sources
    Publication Date: 2018-06-08
    Description: Exceeding all expectations of measurement precision and accuracy, the US/France TOPEX/Poseidon satellite mission is now in its 5th year. Returning more than 98 percent of the altimetric data, the measured global geocentric height of the sea surface has provided unprecedented opportunities to address a host of scientific problems ranging from the dynamics of ocean circulation to the distribution of internal tidal energy. Scientific highlights of this longest-running altimetric satellite mission include improvements in our understanding of the dynamics and thermodynamics of the large-scale ocean variability, such as, the properties of planetary waves; the energetics of basin-wide gyres; the heat budget of the ocean; and the ocean's response to wind forcing. For the first time, oceanographers have quantitative descriptions of a dynamic variable of the physical state of the global oceans available in near-real-time.
    Keywords: Oceanography
    Format: text
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  • 3
    Publication Date: 2018-06-08
    Description: It has been demonstrated that current-generation global ocean general circulation models (OGCM) are able to simulate large-scale sea level variations fairly well. In this study, a GFDL/MOM-based OGCM was used to investigate its sensitivity to different wind forcing. Simulations of global sea level using wind forcing from the ERS-1 Scatterometer and the NMC operational analysis were compared to the observations made by the TOPEX/Poseidon (T/P) radar altimeter for a two-year period. The result of the study has demonstrated the sensitivity of the OGCM to the quality of wind forcing, as well as the synergistic use of two spaceborne sensors in advancing the study of wind-driven ocean dynamics.
    Keywords: Communications and Radar
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  • 4
    Publication Date: 2018-06-08
    Description: Spaceborne remote sensing instruments allow the acquisition of global and synoptic information for Earth Science investigations. In particular, active microwave remote sensing that have contributed geophysical measurements of a scale and accuracy which surpass what could be accomplished with ariborne or in-situ observations.
    Keywords: Earth Resources and Remote Sensing
    Type: Encyclopedia of Electrical and Electronics Engineering
    Format: text
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  • 5
    Publication Date: 2018-06-11
    Description: The forcing of the equatorial Indian Ocean by the highly periodic monsoon wind cycle creates many interesting intraseasonal variabilities. The frequency spectrum of the wind stress observations from the European Remote Sensing Satellite scatterometers reveals peaks at the seasonal cycle and its higher harmonics at 180, 120, 90, and 75 days. The observations of sea surface height (SSH) from the Jason and Ocean Topography Experiment (TOPEX)/Poseidon radar altimeters are analyzed to study the ocean's response. The focus of the study is on the intraseasonal periods shorter than the annual period. The semiannual SSH variability is characterized by a basin mode involving Rossby waves and Kelvin waves traveling back and forth in the equatorial Indian Ocean between 10(deg)S and 10(deg)N. However, the interference of these waves with each other masks the appearance of individual Kelvin and Rossby waves, leading to a nodal point (amphidrome) of phase propagation on the equator at the center of the basin. The characteristics of the mode correspond to a resonance of the basin according to theoretical models. The theory also calls for similar modes at 90 and 60 days.
    Keywords: Oceanography
    Type: Journal of Physical Oceanography; Volume 37; 188-202
    Format: text
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  • 6
    Publication Date: 2018-06-08
    Description: Three video loops showing various aspects of the dynamic ocean topography obtained from the TOPEX/POSEIDON radar altimetry data will be presented. The first shows the temporal change of the global ocean topography during the first year of the mission. The time-averaged mean is removed to reveal the temporal variabilities. Temporal interpolation is performed to create daily maps for the animation. A spatial smoothing is also performed to retain only the large-sale features. Gyre-scale seasonal changes are the main features. The second shows the temporal evolution of the Gulf Stream. The high resolution gravimetric geoid of Rapp is used to obtain the absolute ocean topography. Simulated drifters are used to visualize the flow pattern of the current. Meanders and rings of the current are the main features. The third is an animation of the global ocean topography on a spherical earth. The JGM-2 geoid is used to obtain the ocean topography...
    Keywords: Oceanography
    Type: Centre National d'Etudes Spatiales: Satellite Altimetry and Oceanography; Toulouse; France
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  • 7
    Publication Date: 2018-06-08
    Description: The US/France TOPEX/POSEIDON satellite, which has been in orbit since August, 1992, is the first global ocean observing system specifically designed for studying ocean dynamics. The satellite uses a state-of-the-art radar altimeter system to determine the sea surface topography - the height of sea surface relative to a reference ellipsoid-with an unprecedented accuracy, and has returned a wealth of new information on the ocean circulation and its variations.
    Keywords: Oceanography
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  • 8
    Publication Date: 2018-06-08
    Description: The joint US/France TOPEX/Poseidon satelite was lounched on August 10, 1992. Orbiting at an altitude of 1336km with an inclination of 66 degrees.
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  • 9
    Publication Date: 2013-08-31
    Description: A rationale and recommendations for planning, implementing, and operating an altimetric system aboard the Earth observing system (Eos) spacecraft is provided. In keeping with the recommendations of the Eos Science and Mission Requirements Working Group, a complete altimetric system is defined that is capable of perpetuating the data set to be derived from TOPEX/Poseidon, enabling key scientific questions to be addressed. Since the scientific utility and technical maturity of spaceborne radar altimeters is well documented, the discussion is limited to highlighting those Eos-specific considerations that materially impact upon radar altimetric measurements.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NAS 1.15:89722 , NASA-TM-89722
    Format: application/pdf
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  • 10
    Publication Date: 2018-06-08
    Keywords: Earth Resources and Remote Sensing
    Type: IGARSS '95, Remote Sensing Geoscience; Florence; Italy
    Format: text
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