Global atmospheric effects on the gravity field quantities

Robert Tenzer, Peter Vajda, Hamayun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

We compile the global maps of atmospheric effects on the gravity field quantities using the spherical harmonic representation of the gravitational field. A simple atmospheric density distribution is assumed within a lower atmosphere (< 6 km). Disregarding temporal and lateral atmospheric density variations, the radial atmospheric density model is defined as a function of the nominal atmospheric density at the sea level and the height. For elevations above 6 km, the atmospheric density distribution from the United States Standard Atmosphere 1976 is adopted. The 5 × 5 arc-min global elevation data from the ETOPO5 are used to generate the global elevation model coefficients. These coefficients (which represent the geometry of the lower bound of atmospheric masses) are utilized to compute the atmospheric effects with a spectral resolution complete to degree and order 180. The atmospheric effects on gravity disturbances, gravity anomalies and geoid undulations are evaluated globally on a 1 × 1 arc-deg grid.
Original languageEnglish
Pages (from-to)221-236
Number of pages16
JournalContributions to Geophysics and Geodesy
Volume39
Issue number3
DOIs
Publication statusPublished - 20 Nov 2009
Externally publishedYes

Keywords

  • Atmosphere
  • Effect
  • Gravity field

ASJC Scopus subject areas

  • Geophysics

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