Secondary Generation of Gravity Waves Associated with the Breaking of Mountain Waves

Satomura, Takehiko; Sato, K.

doi:10.1175/1520-0469(1999)056<3847:sgogwa>2.0.co;2

Cited by 71 publications

(75 citation statements)

References 24 publications

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“…This might be caused either by parts of the waves passing through the breaking region, the emission of secondary gravity waves from the breaking region (Satomura and Sato 1999), or waves arriving at this altitude that were excited by another source process.…”

Section: Discussionmentioning

confidence: 99%

Combination of Lidar and Model Data for Studying Deep Gravity Wave Propagation

Ehard

Achtert

Dörnbrack

et al. 2015

Monthly Weather Review

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The paper presents a feasible method to complement ground-based middle atmospheric Rayleigh lidar temperature observations with numerical simulations in the lower stratosphere and troposphere to study gravity waves. Validated mesoscale numerical simulations are utilized to complement the temperature below 30-km altitude. For this purpose, high-temporal-resolution output of the numerical results was interpolated on the position of the lidar in the lee of the Scandinavian mountain range. Two wintertime cases of orographically induced gravity waves are analyzed. Wave parameters are derived using a wavelet analysis of the combined dataset throughout the entire altitude range from the troposphere to the mesosphere. Although similar in the tropospheric forcings, both cases differ in vertical propagation. The combined dataset reveals stratospheric wave breaking for one case, whereas the mountain waves in the other case could propagate up to about 40-km altitude. The lidar observations reveal an interaction of the vertically propagating gravity waves with the stratopause, leading to a stratopause descent in both cases. * Current affiliation: Deutsches Zentrum für Luft-und Raumfahrt,

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Section: Discussionmentioning

confidence: 99%

Combination of Lidar and Model Data for Studying Deep Gravity Wave Propagation

Ehard

Achtert

Dörnbrack

et al. 2015

Monthly Weather Review

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“…Under this influence, the waves must eventually break down to turbulence and then to heat. The mechanism of the wave breaking includes the possibility that secondary waves may be generated as the primary waves destroy themselves (Satomura and Sato, 1999;Afanasyev and Peltier, 2001;Vadas et al, 2003). Wave breaking at lower altitudes in Alpine-relevant geometries were modelled by Schneidereit and Schär (2000) and Epifanio and Durran (2001).…”

Section: Pre-map Theoretical and Numerical Studiesmentioning

confidence: 99%

Alpine gravity waves: Lessons from MAP regarding mountain wave generation and breaking

Smith

Doyle

Jiang

et al. 2007

Quart J Royal Meteoro Soc

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ABSTRACT:The two-month special observing period of the Mesoscale Alpine Programme (MAP) in autumn 1999 included a variety of complex mountain wave events. Seven wave events were carefully analyzed, compared with numerical models and described in published papers. These detailed investigations revealed some common dynamical elements, i.e. the importance of low-level processes involving the slow-moving boundary layer, low-level wind shear causing either wave absorption or decoupling/spilling, upstream blocking, and latent heat release. Based on these studies, it is clear that any quantitative prediction of mountain wave generation must take full account of these lower troposphere processes. The newest numerical models show significant skill in simulating these effects. Using these models, the climatology of waves over the Alps can be studied.

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“…Javam and Redecopp, 1998;Fritts, 1979Fritts, , 1982. The second argument in favor of our hypothesis is the numerical simulations (Bacmeister and Schoeberl, 1989;Walterscheid and Schubert, 1990;Prusa, 1996;Holton and Alexander, 1999;Franke and Robinson, 1999;Satomura and Sato, 1999;Zhou et al, 2002), which shows that forces associated with wave breaking (saturation) of primary GWs excite secondary GWs that propagate upward and downward away from wave breaking region.…”

Section: Critical Level ÿLteringmentioning

confidence: 99%