The diurnal and semidiurnal barometric oscillations global distribution and annual variation

Haurwitz, B.; Cowley, Ann D.

doi:10.1007/bf00876607

Cited by 142 publications

(109 citation statements)

References 12 publications

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“…However, for the Syabru-Bensi data, both EMD and SSA reveal 24-h, S1, components and weaker 12-h, S2, components. These components are attributed to barometric tides (Haurwitz and Cowley, 1973;Richon et al, 2009).…”

Section: Singular Spectrum Analysismentioning

confidence: 99%

Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series

Crockett

Perrier

Richon

2010

Nat. Hazards Earth Syst. Sci.

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Abstract. Two hourly-sampled time-series of soil-gas radon concentrations of durations of the order of a year have been investigated for periodic and anomalous phenomena. These time-series have been recorded in locations having little or no routine human behaviour and thus are effectively free of significant anthropogenic influences. One measurement site, Sur-Frêtes, is located in the French Alps, with saturated soil conditions; the second site, Syabru-Bensi, is located in Nepal, in a river terrace with unsaturated soil conditions. In such conditions, periodic components with periods ranging from 8 h to 7 days are often weak and intermittent and therefore, even in the presence of stationary forcing, difficult to identify.Two spectral decomposition techniques, Empirical Mode Decomposition (EMD) and Singular Spectrum Analysis (SSA), have been applied to these time series and yield similar results. For Sur-Frêtes, weak diurnal and semi-diurnal components are observed with EMD, while SSA reveals only a diurnal component. In Syabru-Bensi, both EMD and SSA reveal a strong diurnal component and a weaker semi-diurnal component. Tidal components M1 and M2 are also suggested by EMD in Sur-Frêtes, while these frequencies are not observed in Syabru-Bensi. The development of such analytical techniques can help in characterising the multiple physical processes contributing to the surface and subsurface dynamics of soil gases.

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Section: Singular Spectrum Analysismentioning

confidence: 99%

Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series

Crockett

Perrier

Richon

2010

Nat. Hazards Earth Syst. Sci.

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“…The maxima and minima occur at approximately the same local time each day and, as with the ocean tide, studies show the height of the atmospheric tide varies with location, from about 0.3 millibars in polar regions to 3.0 millibars in the tropics. It is the intention of this short paper to demonstrate, rather than explain, the components; readers seeking more information on atmospheric and ocean tides are directed to the works of Pugh (1987), Chapman and Lindzen (1970) and Haurwitz and Cowley (1973) where the subject is covered in detail.…”

Section: Jersey Meteorological Departmentmentioning

confidence: 99%

Diurnal pressure variation: the atmospheric tide

Blancq

2011

Weather

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“…Classical tidal theory [Lindzen, 1967;Lindzen and Chapman, 1969;Chapman and Lindzen, 1970] yields a peak annually averaged equatorial tide of about 400 t. tb. Analyses of actual tidal measurements results in an annually averaged value of about 600 t. tb [Haurwitz and Cowley, 1973]. The theory appears to significantly underestimate the measurements.…”

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confidence: 99%

Anomalous short wave absorption and atmospheric tides

Braswell¹,

Lindzen²

1998

Geophysical Research Letters

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Abstract. Recent studies suggest that either clouds or water vapor in clear air absorb significantly more solar radiation (roughly 25 W m '2 averaged globally) than previously thought.It is interesting, in this connection, that solar diurnal surface pressure tides, which are forced primarily by insolation absorbed in the troposphere, are significantly underestimated in current calculations. In this paper it is shown that increased absorption of the above magnitude results in sizable increases in the migrating diurnal surface pressure tide computed from classical tidal theory. Depending on how this extra forcing is distributed in the troposphere, the annually averaged peak tide increases by 150 to 250 gb when the anomalous absorption is considered, resulting in much better agreement with observations.

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The diurnal and semidiurnal barometric oscillations global distribution and annual variation

Cited by 142 publications

References 12 publications

Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series

Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series

Diurnal pressure variation: the atmospheric tide

Anomalous short wave absorption and atmospheric tides

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