[PDF] Top 20 Diurnal tidal variability in the upper mesosphere and lower thermosphere
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Diurnal tidal variability in the upper mesosphere and lower thermosphere
... tides in the lower and middle thermosphere (McLandress et ...to the present study is the result that the propagating diurnal tide exhibits a strong ... See full document
11
Wavelet analysis on transient behaviour of tidal amplitude fluctuations observed by meteor radar in the lower thermosphere above Bulgaria
... regularly in Bulgaria (Yambol, 42.5°N, 26.6°E) since the end of 1989 and the measurements have been processed and analyzed in the Geophysical Institute, So®a since ... See full document
16
Vertical velocities associated with gravity waves measured in the mesosphere and lower thermosphere with the EISCAT VHF radar
... that the middle atmosphere provides an environment rich in the tem- perature and wind structures capable of ducting gravity ...processes. In the case of Doppler ducts, Doppler ... See full document
13
Seasonal variability of phytoplankton fluorescence in relation to the Straits of Messina (Sicily) tidal upwelling
... seasonal variability recorded in autumn, with the high occurrence of phytoplankton biomass in diver- gence zones, are caused by the formation of a thermocline layer with a lower ... See full document
10
Climatological studies of the quasi 16-day oscillations in the mesosphere and lower thermosphere at Yamagawa (31.2° N, 130.6° E), Japan
... to the variability of atmospheric parameters in the middle ...role in the dynamics of the MLT region and its coupling to re- gions above and ...but ... See full document
8
Aura MLS observations of the westward-propagating <i>s</i>=1, 16-day planetary wave in the stratosphere, mesosphere and lower thermosphere
... component in the coupling between the lower and middle at- ...role in the transport of energy, momentum and chemical species, both vertically and ... See full document
13
Mean vertical wind in the mesosphere-lower thermosphere region (80–120 km) deduced from the WINDII observations on board UARS
... Given the temporal and spatial coverage of the data base, we adopt a binning so that mean and time- dependent regimes of the circulation can be character- ised with an acceptable ... See full document
11
The ASSET intercomparison of stratosphere and lower mesosphere humidity analyses
... has the impact of removing the observation profiles which are significantly different from the climatology, effectively removing ...of the HALOE profiles were removed by this process, however ... See full document
22
Thermal tides and studies to tune the mechanistic tidal model using UARS observations
... of the high sensitivity of diurnal tidal amplitudes in the MLT region to atmospheric dissipation, we ®rst present the TMTM results for the diurnal tidal ... See full document
16
Effect of planetary waves on cooling the upper mesosphere and lower thermosphere by the CO<sub>2</sub> 15-µm emission
... Abstract. The steady-state 2-D linearized model of global- scale waves, calibrated according to available observations, is used to evaluate planetary-wave perturbations of temper- ature from the surface up ... See full document
12
Rev. Bras. Geof. vol.25 suppl.2
... for the excitation of the terdiurnal tide: the direct thermal generation by the third harmonic of solar daily cy- cle and dynamical generation by nonlinear interaction between ... See full document
10
Tidal variability of the motion in the Strait of Otranto
... The diurnal spectra of u/v current component and tem- perature at St2, sea level and wind stress were extracted with wavelet analysis ...13). In very few events, the wind stress ... See full document
19
OBSERVATIONS OF SMALL-SCALE GRAVITY WAVES IN THE EQUATORIAL UPPER MESOSPHERE
... Horizontal and vertical propagation and dissipation of gravity waves in the thermosphere from lower atmospheric and thermo- spheric ...equatorial and low-middle ... See full document
9
Rev. Bras. Geof. vol.25 suppl.2
... following the apparent motion of the Sun, with dominant periods of 24-h and 12-h, referred as diurnal and semidiurnal tides, ...Migrating diurnal tides in the ... See full document
7
Isolated lower mesospheric echoes seen by medium frequency radar at 70° N, 19° E
... waves in the mesosphere from as low as 50 km altitude, which we refer to as isolated lower mesospheric echoes ...“isolated” and “lower” are, to some extent defined by our ... See full document
8
TERDIURNAL TIDES IN THE MLT REGION OVER CACHOEIRA PAULISTA (22.7ºS; 45ºW)
... for the excitation of the terdiurnal tide: the direct thermal generation by the third harmonic of solar daily cy- cle and dynamical generation by nonlinear interaction between ... See full document
10
Diurnal variation of short-period (20–120 min) gravity waves in the equatorial Mesosphere and Lower Thermosphere and its relation to deep tropical convection
... throughout the full range of phase speeds, wave periods, and vertical and horizontal scales (Fritts and Alexander, ...Among the spectrum of GWs, the long-period GWs propagate at ... See full document
7
Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind
... consider the problem of reliability of the GEWM and to compare it with space-based ...of the model data to the actual experimental data at the most representative height of about ... See full document
16
Retrieval of nitric oxide in the mesosphere and lower thermosphere from SCIAMACHY limb spectra
... used in trace gas retrieval consists of using homogeneous atmosphere layers to invert only a sin- gle limb scan, resulting in a vertical profile at one geoloca- ...when the radiative paths through ... See full document
11
A numerical study of mountain waves in the upper troposphere and lower stratosphere
... than the actual vertical wavelength (4.5 km) and reflects both the ver- tical and horizontal variations along the slanted path of the ...Both the potential temperature ... See full document
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