Results 1 to 10 of about 14,203 (319)
Global Geopotential Models assessment in Ecuador based on geoid heights and geopotential values
Journal of Geodetic Science, 2023 Abstract Since the 1960s, the analysis of disturbed satellite orbits to infer Earth’s gravity field functionals has been an important element in determining the Earth’s gravitational field. The long wavelengths of the gravitational field are recovered through the analysis of non-Keplerian variations in the orbital path of artificial ...
Carrión José +3 more
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Geopotential Model of Earth - Approximation of Earth Shape, Geopotential Model Testing Methods [PDF]
Communications - Scientific letters of the University of Zilina, 2001 Stokes' geodynamic parameters in the expansion of the gravity potential of the Earth serve for a mathematical and physical description of an outer gravity field of the Earth, the shape and the size of the Earth. In this article, the results from testing of an accuracy of the geopotential model EGM 96 at the territory of Slovakia are published.
Robert Tenzer
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There is no horizontal gravity force in geopotential coordinates. [PDF]
Proc Natl Acad Sci U S AIn response to a recent challenge to the longstanding practice in modeling large-scale circulations in the atmosphere and ocean that neglects any horizontal component of Earth’s gravity-rotation force, this paper demonstrates that a coordinate transformation into geopotential coordinates has no such horizontal force. This framework should be understood
McWilliams JC.
europepmc +4 more sources
Tropospheric Geopotential and Velocity Variances [PDF]
Tellus A: Dynamic Meteorology and Oceanography, 1961 DOI: 10.1111/j.2153-3490.1961.tb00114 ...
C. Eugene Bell
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True Geopotential in Meteorology
, 2021 Geopotential in meteorology is the same as gravity potential in geodesy but with the opposite sign.
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Quarterly Journal of the Royal Meteorological Society, EarlyView.The atmospheric mechanisms responsible for the low‐level cloud cover (LCC) over western equatorial Africa in the dry season are poorly studied. This study brings a better understanding of the mechanisms accounting for the diurnal LCC formation and dissipation, and it highlights some potential interactions between local and regional dynamics by using a ...
Alexandre Berger +5 more
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Quarterly Journal of the Royal Meteorological Society, EarlyView.Ensemble Kalman filters implicitly linearize the observation operator, which causes the posterior to deviate from its linear approximation. We quantify the linearization error for visible and infrared radiances and conclude that the linear approximation should not be used for nonlinear observation types.
Lukas Kugler, Martin Weissmann
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Modelling the influence of soil moisture on the Turkana jet
Quarterly Journal of the Royal Meteorological Society, EarlyView.High‐resolution convection‐permitting experiments demonstrate that the Turkana jet is sensitive to soil moisture variations. When examining realistic dry and wet conditions, dry soils amplify a surface‐induced thermal low, which intensifies the along‐channel pressure gradient and strengthens the Turkana jet.
Joshua Talib +6 more
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Quarterly Journal of the Royal Meteorological Society, EarlyView.(a) Location map with the 26 stations as yellow squares superimposed on the topography in metres above sea level. Correlations between intraseasonal variability of the stratiform cloud cover over Western Equatorial Africa (WEAisv) and (b) observed low‐cloud fraction (LCF), (c) ERA5 LCF at the same location as stations with the same missing entries, (d)
Vincent Moron +4 more
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Local identification of equatorial mixed Rossby–gravity waves
Quarterly Journal of the Royal Meteorological Society, EarlyView.A method for the local identification of mixed Rossby–gravity (MRG) waves at specific longitudes is proposed. The technique jointly identifies eastward mixed Rossby–gravity (EMRG) and westward mixed Rossby–gravity (WMRG) waves. Comparison with global identification methods already found in the literature shows very good accuracy of the newly developed ...
João B. Cruz +2 more
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