2007
DOI: 10.1029/2005jd006179
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Seasonal variations of the vertical fluxes of heat and horizontal momentum in the mesopause region at Starfire Optical Range, New Mexico

Abstract: [1] Lidar observations of wind and temperature profiles between 85 and 100 km, conducted at the Starfire Optical Range (SOR), New Mexico, are used to characterize the seasonal variations of the vertical fluxes of heat and horizontal momentum and their relationships to gravity wave activity in this region. The wind and temperature variances exhibit strong 6-month oscillations with maxima during the summer and winter that are about 3 times larger than the spring and fall minima. The vertical heat flux also exhib… Show more

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Cited by 68 publications
(160 citation statements)
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“…5-11, Acott, 2009). This seasonal variation is in agreement with wind and temperature variances measured by radar and lidar at other locations (Nakamura et al, 1996;Gardner and Liu, 2007). We also see in Fig.…”
Section: Seasonal Variabilitysupporting
confidence: 78%
See 2 more Smart Citations
“…5-11, Acott, 2009). This seasonal variation is in agreement with wind and temperature variances measured by radar and lidar at other locations (Nakamura et al, 1996;Gardner and Liu, 2007). We also see in Fig.…”
Section: Seasonal Variabilitysupporting
confidence: 78%
“…As a consequence of AGW dissipation, the wave momentum flux is deposited into the mean state and the local eddy diffusion is enhanced. Indeed, the mesosphere eddy diffusion coefficient and momentum flux divergence show greater values during solstices than equinoxes (Fukao et al, 1994;Gardner and Liu, 2007). From observed seasonal dependent AGW activities, in particular the associated dissipations, one can deduce a seasonal distribution of the eddy diffusion coefficient.…”
Section: Seasonal Variabilitymentioning
confidence: 99%
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“…Except for a few studies in the polar region, long-period large-scale GWs, especially inertia GWs, which play critical roles in MLT dynamics, are not well studied, leaving contributions from most of these waves unchecked. The ground-based experimental studies on climatological GW perturbations (Gardner and Liu, 2007;Rauthe et al, 2006Rauthe et al, , 2008 have been limited to nocturnal observations as well with various de-trending algorithms developed, trying to remove tidal biases from the measurements. At the same time, several bandpass filter techniques are also be attempted and utilized in similar GW investigations.…”
Section: Introductionmentioning
confidence: 99%
“…Convective instability, which is associated with temperature inversion, usually occurs when there is a large negative temperature gradient. Gravity waves can dissipate in the middle atmosphere, transporting heat downward and thus cooling the breaking region [Walterscheid, 1981;Gardner and Yang, 1998;Gardner and Liu, 2007;Li et al, 2007].…”
Section: Analysis Methodsmentioning
confidence: 99%