Analytical models for the responses of the mesospheric OH* and Na layers to atmospheric gravity waves

Swenson, G. R.; Gardner, Chester S.

doi:10.1029/97jd02985

Cited by 155 publications

(237 citation statements)

References 47 publications

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“…(18). Since the works by AdlerGolden (1997) and Swenson and Gardner (1998), it has been well known that the altitude difference between the OH * layer peaks with different vibrational numbers depends on quenching by atomic oxygen. That is to say, more reactive quenching or larger values of atomic oxygen concentration are linked to stronger altitude differences between OH * peaks with different vibrational numbers.…”

Section: Discussionmentioning

confidence: 99%

Several notes on the OH* layer

Grygalashvyly

2015

Ann. Geophys.

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Section: Discussionmentioning

confidence: 99%

Several notes on the OH* layer

Grygalashvyly

2015

Ann. Geophys.

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“…Hickey and Plane [1995] have shown that sodium can be treated as a passive dynamical tracer above 85 km. Thus, assuming the gravity wave temperature and density perturbations are anti-correlated with the same relative magnitude [Swenson and Gardner, 1998], the 6% peak-to-peak airglow intensity variation observed might be associated with a peak-to-peak absorption variation in the region of 7%. The perturbations in absorption observed for this event (Figure 4) occur against a mean background absorption level of approximately 0.13 dB.…”

Section: Discussionmentioning

confidence: 99%

“…In turn, n is approximately proportional to n.T 1/2 (where n is the neutral density and T is temperature) up to 100 km altitude where neutrals dominate. Swenson and Gardner [1998] modelled the gravity wave induced perturbations in mesospheric airglow and temperature using analytical models. They demonstrated that, for gravity waves with a vertical wavelength in excess of 15 km, the 6% peak-to-peak OH intensity oscillation observed for this event might typically be associated with a sodium abundance variation of $10%.…”

Section: Discussionmentioning

confidence: 99%

Utilizing riometry to observe gravity waves in the sunlit mesosphere

Jarvis

Hibbins

Taylor

et al. 2003

Geophysical Research Letters

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[1] The novel use of imaging riometers to observe mesospheric gravity waves is described. Imaging riometers respond to changes in the absorption of cosmic radio noise in the ionospheric D-region which enables them to detect the compression and rarefaction of the atmosphere at $90 km altitude generated by the passage of gravity waves. A considerable advantage of this method is that, unlike conventional techniques which rely on imaging faint optical emissions from the airglow layer at $87 km altitude, riometers remain operative under daylit, moonlit or cloudy conditions. This is particularly important for research into gravity wave forcing of mesospheric temperature at polar latitudes in summer when continuous 24-hour daylight prevails. An example in which the same wave event is characterized in colocated airglow imager and imaging riometer shows good agreement between the two instruments.

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“…An observable effect of gravity waves is airglow modulation caused by density/temperature variations of the wave fields. Swenson and Gardner [1998] Such observations could provide a global mapping of gravity wave propagation which is necessary for global scale models of the mesosphere and lower-thermosphere. This paper describes the ground-based observation of gravity wave modulated variations in OH airglow images in the 1.4-1.5 pm infrared region.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric gravity wave signatures in the infrared hydroxyl OH airglow

Frey

Mende

Arens

et al. 2000

Geophysical Research Letters

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Abstract. Atmospheric gravity wave induced airglow fluctuations of the hydroxyl OH Meinel and other bands are routinely observed using CCD imagers operating in the near infrared wavelength region. Farther into the infrared, the intensity of the OH emissions is much greater. Recently, a new IR imaging camera was modified for infrared viewing of the night sky with approximately 1 steradian field of view. The filter had a center wavelength of 1467 nm and a bandwidth of 177 nm to include components of the OH (Av = 2) band. The images show good signal-to-noise ratios of 180 with 10 second exposures. Cross-spectral and wavelet analysis were used to obtain spatial and temporal information about observed airglow fluctuations, and horizontal wavelengths and wave periods as short as 3.7 km and 3 min, respectively, were determined.

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Analytical models for the responses of the mesospheric OH* and Na layers to atmospheric gravity waves

Cited by 155 publications

References 47 publications

Several notes on the OH* layer

Several notes on the OH* layer

Utilizing riometry to observe gravity waves in the sunlit mesosphere

Atmospheric gravity wave signatures in the infrared hydroxyl OH airglow

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