Search Results - "Didebulidze, G G"

Intra-annual variations of spectrally resolved gravity wave activity in the upper mesosphere/lower thermosphere (UMLT) region by Sedlak, René, Zuhr, Alexandra, Schmidt, Carsten, Wüst, Sabine, Bittner, Michael, Didebulidze, Goderdzi G, Price, Colin

“…The period range between 6 and 480 min is known to represent the major part of the gravity wave spectrum driving mesospheric dynamics. We present a method…”
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Data‐Driven Modeling of Atomic Oxygen Airglow over a Period of Three Solar Cycles by Mackovjak, Š., Varga, M., Hrivňak, S., Palkoci, O., Didebulidze, G. G.

“…The Earth's upper atmosphere is a dynamic environment that is continuously affected by space weather from above and atmospheric processes from below. An…”
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Formation of Multilayered Sporadic E under an Influence of Atmospheric Gravity Waves (AGWs) by Didebulidze, Goderdzi G., Dalakishvili, Giorgi, Todua, Maya

“…The formation of multilayered sporadic E by atmospheric gravity waves (AGWs), propagating in the mid-latitude lower thermosphere, is shown theoretically and…”
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The Role of Neutral Wind Velocity and Its Vertical Component on Predictability of Formation and Localization of Sporadic E (Es) by Didebulidze, Goderdzi G., Dalakishvili, Giorgi, Todua, Maya, Toriashvili, Lekso

“…The formation and localization of sporadic E (Es) layers predicted by the ion vertical drift velocity and its vertical change in the lower thermosphere during…”
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The inter-annual distribution of cloudless days and nights in Abastumani: Coupling with cosmic factors and climate change by Didebulidze, G.G., Todua, M.

“…We examined inter-annual variations and long-term trends of cloudless days (CD) and cloudless nights (CN) in 1957–1993 from Abastumani (41.75N, 42.82E), at…”
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Formation of sporadic-E (Es) layers under the influence of AGWs evolving in a horizontal shear flow by Didebulidze, G.G., Dalakishvili, G., Lomidze, L., Matiashvili, G.

“…The formation of mid-latitude sporadic-E (Es) layer under the influence of atmospheric gravity waves (AGWs), evolving in the background horizontal wind with a…”
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The formation of sporadic E layers by a vortical perturbation excited in a horizontal wind shear flow by DIDEBULIDZE, G. G, LOMIDZE, L. N

“…The formation of the mid-latitude sporadic E layers (Es layers) by an atmospheric vortical perturbation excited in a horizontal shear flow (horizontal wind…”
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Double atmospheric gravity wave frequency oscillations of sporadic E formed in a horizontal shear flow by Didebulidze, G.G., Lomidze, L.N.

“…The new theory of sporadic E density oscillation with double atmospheric gravity wave (AGW) frequency in two-dimensional case taking into account ions…”
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Multilayered structures in the ionosphere F2 region and impulse-like increase of the nightglow red 630 nm line intensity as a result of influence of shear excited atmospheric vortical perturbations by Didebulidze, G. G., Lomidze, L. N., Gudadze, N. B., Todua, M.

“…It is shown that the formation of multilayered structures in the midlatitude ionosphere F2 layer can be caused by atmospheric vortical perturbation (shear…”
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Different long-term trends of the oxygen red 630.0 nm line nightglow intensity as the result of lowering the ionosphere F2 layer by GUDADZE, N. B, DIDEBULIDZE, G. G, LOMIDZE, L. N, JAVAKHISHVILI, G. Sh, MARSAGISHVILI, M. A, TODUA, M

“…Long-term observations of total nightglow intensity of the atomic oxygen red 630.0 nm line at Abastumani (41.75° N, 42.82° E) in 1957–1993 and measurements of…”
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Long-term changes in the nightly behaviour of the oxygen red 630.0 nm line nightglow intensity and trends in the thermospheric meridional wind velocity by Didebulidze, G. G, Lomidze, L. N, Gudadze, N. B, Pataraya, A. D, Todua, M

“…Long-term changes in the nightly behaviour of the monthly/seasonal mean of the oxygen red 630.0 nm line intensity were observed at Abastumani (41.75° N, 42.82°…”
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Ground-, satellite- and simulation-based analysis of a strong dust event over Abastumani, Georgia, during May 2009 by Kokkalis, P., Mamouri, R. E., Todua, M., Didebulidze, G. G., Papayannis, A., Amiridis, V., Basart, S., Pérez, C., Baldasano, J. M.

“…A strong dust event over Abastumani, Georgia, during May 2009 was studied using light detection and ranging (lidar), satellite and sun photometric…”
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Multilayered structures in the ionosphere F 2 region and impulse‐like increase of the nightglow red 630 nm line intensity as a result of influence of shear excited atmospheric vortical perturbations by Didebulidze, G G, Lomidze, L N, Gudadze, N B, Todua, M

“…It is shown that the formation of multilayered structures in the midlatitude ionosphere F 2 layer can be caused by atmospheric vortical perturbation (shear…”
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Ionosphere F2 layer stratification caused by shear excited atmospheric vortical perturbation by Didebulidze, G.G., Lomidze, L.N., Gudadze, N.B.

“…We found that the height distribution of electron density of the mid-latitude ionosphere F2 region during nighttime being under the influence of a vortical…”
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Coupling processes between atmospheric vortical perturbations and acoustic–gravity waves in the mesosphere–thermosphere regions by Didebulidze, G.G., Kafkalidis, J.F., Pataraya, A.D.

“…The importance of the horizontal wind with horizontal shear for the formation of short-period acoustic–gravity waves (AGWs), as well as for their mutual…”
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Formation of sporadic E (Es) layer by homogeneous and inhomogeneous horizontal winds by Dalakishvili, G., Didebulidze, G.G., Todua, M.

“…The possibility of sporadic E (Es) layer formation in the mid-latitude nighttime lower thermosphere by horizontal homogeneous and inhomogeneous (vertically…”
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Evolution of Atmospheric Gravity Waves in Horizontal Shear Flow by Didebulidze, G G

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Cosmic factors influence on the inter-annual variations of the green 557.7 Nm line and red 630.0 Nm line nightglow intensities and their possible coupling with cloud covering at Abastumani (41.75°N, 42.82°E) by Todua, Maya, Didebulidze, Goderdzi G.

“…We studied the inter-annual distributions of the nightglow intensities of the thermosphere atomic oxygen red 630.0 nm and green 557.7 nm lines observed from…”
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On the possibility of in situ shear excitation of vortical perturbations and their coupling with short-period gravity waves by airglow and ionosphere observations by Didebulidze, G.G, Chilingarashvili, S.P, Toroshelidze, T.I, Murusidze, I.G, Kvavadze, N.D, Sharadze, Z.S

“…The essential part of in situ shear excited vortical perturbations (shear waves) at mesosphere–thermosphere heights is considered by use of airglow, from…”
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Ionosphere F2-region under the influence of the evolutional atmospheric gravity waves in horizontal shear flow by Didebulidze, G.G., Pataraya, A.d.

“…The ambipolar diffusion equation for the height distribution of electron density in the ionospheric F2-layer is solved in the presence of neutral horizontal…”
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