Results 41 to 50 of about 30,800 (166)

Thermal structure and dynamics of the Martian upper atmosphere at solar minimum from global circulation model simulations [PDF]

Annales Geophysicae, 2007
Simulations of the Martian upper atmosphere have been produced from a self-consistent three-dimensional numerical model of the Martian thermosphere and ionosphere, called MarTIM.
T. Moffat-Griffin, T. Moffat-Griffin, A. D. Aylward, W. Nicholson   +3 more
doaj   +1 more source

The Effect of Atmospheric Dynamics on the Upper Atmosphere Phenomena of Mars and Venus [PDF]

Symposium - International Astronomical Union, 1971
By the observations of Mariners and Veneras, oxygen atom deficiencies and very low exospheric temperatures were found in the upper atmospheres of Mars and Venus. There are two types of interpretations for these phenomena: photochemical ones (CO3 hypothesis), and dynamical ones. In this paper, the latter point of view is summarized.
openaire   +1 more source

Instrument concept of the imaging Fourier transform spectrometer GLORIA [PDF]

Atmospheric Measurement Techniques, 2014
The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging limb emission sounder operating in the thermal infrared region.
F. Friedl-Vallon, T. Gulde, F. Hase, A. Kleinert, T. Kulessa, G. Maucher, T. Neubert, F. Olschewski, C. Piesch, P. Preusse, H. Rongen, C. Sartorius, H. Schneider, A. Schönfeld, V. Tan, N. Bayer, J. Blank, R. Dapp, A. Ebersoldt, H. Fischer, F. Graf, T. Guggenmoser, M. Höpfner, M. Kaufmann, E. Kretschmer, T. Latzko, H. Nordmeyer, H. Oelhaf, J. Orphal, M. Riese, G. Schardt, J. Schillings, M. K. Sha, O. Suminska-Ebersoldt, J. Ungermann   +34 more
doaj   +1 more source

A Global View of Jupiter’s Upper Atmosphere Through H

The Astrophysical Journal Letters
Planetary upper atmospheres couple the deep atmosphere to the space environment. The dynamics and energetics of this rarefied, partially ionized region govern atmospheric evolution. At Jupiter, decades of past plasma measurements have revealed a variable
Kate Roberts, Luke Moore, James O’Donoghue, Henrik Melin, Tom Stallard, Ingo Müller-Wodarg, Omakshi Agiwal, Katie L. Knowles, Paola I. Tiranti, Khalid Mohamed, Carl Schmidt   +10 more
doaj   +1 more source

A dynamic upper atmosphere of Venus as revealed by VIRTIS on Venus Express [PDF]

Nature, 2007
The upper atmosphere of a planet is a transition region in which energy is transferred between the deeper atmosphere and outer space. Molecular emissions from the upper atmosphere (90-120 km altitude) of Venus can be used to investigate the energetics and to trace the circulation of this hitherto little-studied region.
Drossart, P, Piccioni, G., Gérard, J. C., Lopez Valverde, M. A., Sanchez Lavega, A., Zasova, L., Hueso, R., Taylor, F. W., Bézard, B., Adriani, A., ANGRILLI, FRANCESCO, Arnold, G., Baines, K. H., Bellucci, G., Benkhoff, J., Bibring, J. P., Blanco, A., Blecka, M. I., Carlson, R. W., Coradini, A., Di Lellis, A., Encrenaz, T., Erard, S., Fonti, S., Formisano, V., Fouchet, T., Garcia, R., Haus, R., Helbert, J., Ignatiev, N. I., Irwin, P., Langevin, Y., Lebonnois, S., Luz, D., Marinangeli, L., Orofino, V., Rodin, A. V., Roos Serote, M. C., SAGGIN, BORTOLINO, Stam, D. M., Titov, D., Visconti, G., Zambelli, M., Tsang, C., Ammannito, Eleonora, Barbis, Alessandra, Berlin, Rainer, BETTANINI FECIA DI COSSATO, CARLO, Boccaccini, Angelo, Bonnello, Guillaume, Bouyé, Marc, Capaccioni, Fabrizio, Cardesin, Alejandro, Carraro, Francesco, Cherubini, Giovanni, Cosi, Massimo, Dami, Michele, De Nino, Maurizio, Del Vento, Davide, Di Giampietro, Marco, Donati, Alessandro, Dupuis, Olivier, Espinasse, Sylvie, Fabbri, Anna, Fave, Agnès, Ficai Veltroni, Iacopo, Filacchione, Gianrico, Garceran, Katia, Ghomchi, Yamina, Giustizi, Maurizio, Gondet, Brigitte, Hello, Yann, Henry, Florence, Hofer, Stefan, Huntzinger, Gerard, Kachlicki, Juergen, Knoll, René, Kouach, Driss, Mazzoni, Alessandro, Melchiorri, Riccardo, Mondello, Giuseppe, Monti, Francesco, Neumann, Christian, Nuccilli, Fabrizio, Parisot, Jérôme, Pasqui, Claudio, Perferi, Stefano, Peter, Gisbert, Piacentino, Alain, Pompei, Carlo, Réess, Jean Michel, Rivet, Jean Pierre, Romano, Antonio, Russ, Natalie, Santoni, Massimo, Scarpelli, Adelmo, Sémery, Alain, Soufflot, Alain, Stefanovitch, Douchane, Suetta, Enrico, Tarchi, Fabio, Tonetti, Nazzareno, Tosi, Federico, Ulmer, Bernd   +103 more
openaire   +9 more sources

First three dimensional wave characteristics in the daytime upper atmosphere derived from ground‐based multiwavelength oxygen dayglow emission measurements

Geophysical Research Letters, 2016
First results on the three‐dimensional wave characteristics in the daytime upper atmosphere have been derived using measurements of oxygen dayglow emissions at 557.7, 630.0, and 777.4 nm that originate at around 130, 230, and 300 km (peak of the F region)
Duggirala Pallamraju, Deepak K. Karan, Kedar A. Phadke   +2 more
doaj   +1 more source

The Inhomogeneity Effect. III. Weather Impacts on the Heat Flow of Hot Jupiters

The Astrophysical Journal, 2023
The interior flux of a giant planet impacts atmospheric motion, and the atmosphere dictates the interior’s cooling. Here we use a non-hydrostatic general circulation model (Simulating Non-hydrostatic Atmospheres on Planets) coupled with a multi-stream ...
Xi Zhang, Cheng Li, Huazhi Ge, Tianhao Le   +3 more
doaj   +1 more source

Validity on radar observation of middle- and upper-atmosphere dynamics [PDF]

Earth, Planets and Space, 2009
Abstract Doppler radar observations have made a large contribution towards improving our understanding of middle- and upper-atmosphere dynamics. This radar echo is mainly due to radiowave scattering by atmospheric turbulence, which occurs almost universally throughout the atmosphere as a result of gravity wave (GW) breaking. In the strictness
openaire   +1 more source

Space weather, Earth's neutral upper atmosphere (thermosphere), and spacecraft orbital lifetime/dynamics [PDF]

IEEE Transactions on Plasma Science, 2000
Accurate prediction of a spacecraft/satellite orbital lifetime, insertion altitude, reboost requirements, and mission performance is mainly the result of the integrated effect from knowledge of the atmospheric density, space weather (solar/geomagnetic), and timeline of vehicle characteristics.
J.K. Owens, W.W. Vaughan, K.O. Niehuss, J. Minow   +3 more
openaire   +1 more source

CO at 40–80 km above Kiruna observed by the ground-based microwave radiometer KIMRA and simulated by the Whole Atmosphere Community Climate Model [PDF]

Atmospheric Chemistry and Physics, 2012
This study compares CO in the Arctic stratosphere and mesosphere measured by ground-based microwave radiometry with simulations made with the Whole Atmosphere Community Climate Model driven with specified dynamical fields (SD-WACCM4) for the Arctic ...
C. G. Hoffmann, D. E. Kinnison, R. R. Garcia, M. Palm, J. Notholt, U. Raffalski, G. Hochschild   +6 more
doaj   +1 more source