Tidal winds at mesopause altitudes over Arecibo (18°N, 67°W), 5–11 April 1989 (AIDA '89)

Roper, R. G.; Adams, G. W.; Brosnahan, J. W.

doi:10.1016/0021-9169(93)90070-f

Cited by 30 publications

(10 citation statements)

References 12 publications

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“…Other observations of terdiurnal oscillations over tropical latitudes were reported by Bernald et al (1981) over Puerto Rico (18 • N), with a large vertical wavelength and sometimes as low as 50 km. Roper et al (1993) also reported a significant amplitude of the terdiurnal oscillation over Arecibo. nonlinear interaction between the diurnal and semidiurnal tides, and tidal/gravity wave interaction.…”

Section: Terdiurnal Tidesmentioning

confidence: 87%

Vertical propagation characteristics and seasonal variability of tidal wind oscillations in the MLT region over Trivandrum (8.5° N, 77° E): first results from SKiYMET Meteor Radar

et al. 2006

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Abstract. Tidal activity in the Mesospheric Lower Thermosphere (MLT) region over Trivandrum (8.5 • N, 77 • E) is investigated using the observations from newly installed SKiYMET Meteor Radar. The seasonal variability and vertical propagation characteristics of atmospheric tides in the MLT region are addressed in the present communication.The observations revealed that the diurnal tide is more prominent than the semi/terdiurnal components over this latitude. It is also observed that the amplitudes of meridional components are stronger than that of zonal ones. The amplitude and phase structure shows the vertical propagation of diurnal tides with vertical wavelength of ∼25 km. However, the vertical wavelength of the semidiurnal tide showed considerable variations. The vertical propagation characteristics of the terdiurnal tide showed some indications of their generating mechanisms. The observed features of tidal components are compared with Global Scale Wave Model (GSWM02) values and they showed a similar amplitude and phase structure for diurnal tides. Month-to-month variations in the tidal amplitudes have shown significant seasonal variation. The observed seasonal variation is discussed in light of the variation in tidal forcing and dissipation.

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Section: Terdiurnal Tidesmentioning

confidence: 87%

Vertical propagation characteristics and seasonal variability of tidal wind oscillations in the MLT region over Trivandrum (8.5° N, 77° E): first results from SKiYMET Meteor Radar

et al. 2006

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“…The Groves' technique was first used on IDI data by Roper et al (1993). While initially formulated and used in the analysis of radio meteor data, the IDI data parameters which consist of echo height, line of sight velocity, echo arrival angle and time of occurrence are identical to those measured by a meteor radar.…”

Section: Mean Winds and Tides For The Year 2000mentioning

confidence: 99%

Mesospheric and lower thermospheric turbulence over Bear Lake, Utah, 1999–2003

Roper

Berkey

2011

Journal of Atmospheric and Solar-Terrestrial Physics

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“…Migrating and nonmigrating tides provide a large part of the dynamical forcing that determines the MLT thermal structure, and they affect the chemical processes related to metallic and other atoms and molecules in the region. MLT tidal variations are observed in temperatures [ Chen et al , 2000; Dao et al , 1995; Fricke‐Begemann and Höffner , 2005; Salah and Wand , 1974; She et al , 2002; 2004; States and Gardner , 2000b; Taylor et al , 2001; Williams et al , 1998; Yuan et al , 2006, 2008], winds [ Roper et al , 1993; She et al , 2002, 2004; Yuan et al , 2006, 2008; Zhou et al , 1997], metal atom densities [ Hecht et al , 1998; States and Gardner , 1999; Williams et al , 1998], and airglow intensities [ Hecht et al , 1998; Zhang et al , 2001; Zhao et al , 2005].…”

Section: Introductionmentioning

confidence: 99%

Longitude variations of the solar semidiurnal tides in the mesosphere and lower thermosphere at low latitudes observed from ground and space

Friedman¹,

Zhang²,

Chu³

et al. 2009

J. Geophys. Res.

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We present an analysis of longitudinal variation in the solar semidiurnal tide observed in the nocturnal thermal structure of the low‐latitude mesopause region (83–103 km), with a focus on two sites: Arecibo, Puerto Rico (18.3°N, 66.8°W) and Maui, Hawaii (20.7°N, 156.3°W). Localized observations made by lidars are combined with longitudinal measurements by Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and compared with the Global‐Scale Wave Model‐2002 (GSWM‐02) for 6 months: January, April, May, July, August, and October. In winter‐spring, lidar‐measured amplitudes are larger than those recorded by SABER, whereas in summer the amplitudes are similar and in autumn the lidars observe smaller amplitudes than SABER. GSWM amplitudes are between the lidar and SABER measurements for January, are comparable to the measurements in spring, underpredict for summer, and agree with the lidars in autumn. The phase structure is consistent among lidars and SABER for all of the months except January, when there is a large phase shift, and the local time of the temperature maximum is different between Arecibo and Maui. GSWM shows better agreement with phase measurements in winter‐spring than in summer‐autumn. Modal analysis of the SABER data indicates that the (2, 2) Hough mode is present throughout the year. In winter, it is joined by the (2, 4) mode, while in summer it is accompanied by the (2, 3) mode. This change in the predominant Hough modes may be related to the winter‐summer phase difference.

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Tidal winds at mesopause altitudes over Arecibo (18°N, 67°W), 5–11 April 1989 (AIDA '89)

Cited by 30 publications

References 12 publications

Vertical propagation characteristics and seasonal variability of tidal wind oscillations in the MLT region over Trivandrum (8.5° N, 77° E): first results from SKiYMET Meteor Radar

Vertical propagation characteristics and seasonal variability of tidal wind oscillations in the MLT region over Trivandrum (8.5° N, 77° E): first results from SKiYMET Meteor Radar

Mesospheric and lower thermospheric turbulence over Bear Lake, Utah, 1999–2003

Longitude variations of the solar semidiurnal tides in the mesosphere and lower thermosphere at low latitudes observed from ground and space

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