Barometric Tides from ECMWF Operational Analyses

By Richard D. Ray, R. Ponte. 2003

227 citations recorded by the source corpus.

Abstract. The solar diurnal and semidiurnal tidal oscillations in surface pressure are extracted from the operational analysis product of the European Centre for Medium Range Weather Forecasting (ECMWF). For the semidiurnal tide this involves a special temporal interpolation, following Van den Dool et al. (1997). The resulting tides are compared with a "ground truth" tide data set, a compilation of well-determined tide estimates deduced from many long time series of station barometer measurements. These comparisons show that the ECMWF (analysis) tides are significantly more accurate than the tides deduced from two other widely available reanalysis products. Spectral analysis of ECMWF pressure series shows that the tides consist of sharp central peaks with modulating sidelines at integer multiples of 1 cycle/year, superimposed on a broad cusp of stochastic energy. The integrated energy in the cusp dominates that of the side-lines. This complicates the development of a simple empirical model that can characterize the full temporal variability of the tides. Key words. Meteorology and atmospheric dynamics (waves and tides)

Subfields: Atmospheric Science, Global and Planetary Change, Oceanography

View Paper: https://www.semanticscholar.org/paper/13a774b47d5789e0961a7b12ed008f308be0ff6e

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Citations in the corpus

Variations of the Earth's figure axis from satellite laser ranging and GRACE (2011, background): “The atmospheric S1 and S2 tide are also modeled [ Ray and Ponte, 2003 ].”
Antarctica, Greenland and Gulf of Alaska land-ice evolution from an iterated GRACE global mascon solution (2013, methodology): “7 ocean tides (Ray, 1999; Ray and Ponte, 2003) OMCT ocean model from AOD1B ECMWF 3 hour operational pressure grids (Nmax ¼ 90) Post-solution geocenter correction (Swenson and others, 2008) v09 Same as v08 GLDAS/Noah 0:25 , 3 hour data (Nmax ¼ 90) Ice ‘masked out’ ICE–5G (VM2) (model C21 and S21…”
Assessment of the accuracy of global geodetic satellite laser ranging observations and estimated impact on ITRF scale: estimation of systematic errors in LAGEOS observations 1993–2014 (2016, methodology): “Recent updates introduced to SATAN and the underlying geodetic and geophysical models in use bring it close to compliance with the 2010 Conventions of the International Earth Rotation and Reference Frame Service (IERS) Petit and Luzum (2010) and include the adoption of SOFA subroutines for precessio”