Search Results - "Fritts, D."

On the seeding of equatorial spread F by gravity waves by Krall, J., Huba, J. D., Fritts, D. C.

“…The Naval Research Laboratory three‐dimensional simulation code SAMI3/ESF is used to study the response of the postsunset ionosphere to plane gravity waves…”
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Gravity wave penetration into the thermosphere : sensitivity to solar cycle variations and mean winds by FRITTS, D. C, VADAS, S. L

“…We previously considered various aspects of gravity wave penetration and effects at mesospheric and thermospheric altitudes, including propagation, viscous…”
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Tsunami‐driven gravity waves in the presence of vertically varying background and tidal wind structures by Laughman, B., Fritts, D. C., Lund, T. S.

“…Many characteristics of tsunami‐driven gravity waves (TDGWs) enable them to easily propagate into the thermosphere and ionosphere with appreciable amplitudes…”
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Unexpected Climatological Behavior of MLT Gravity Wave Momentum Flux in the Lee of the Southern Andes Hot Spot by DeWit, R. J., Janches, D., Fritts, D. C., Stockwell, R. G., Coy, L.

“…The Southern Argentina Agile MEteor Radar (SAAMER), located at Tierra del Fuego (53.7degS, 67.7degW), has been providing near-continuous high-resolution…”
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Southern Argentina Agile Meteor Radar: Initial assessment of gravity wave momentum fluxes by Fritts, D. C., Janches, D., Hocking, W. K.

“…The Southern Argentina Agile Meteor Radar (SAAMER) was installed on Tierra del Fuego (53.8°S) in May 2008 and has been operational since that time. This paper…”
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THE SOUTHERN ARGENTINA AGILE METEOR RADAR ORBITAL SYSTEM (SAAMER-OS): AN INITIAL SPORADIC METEOROID ORBITAL SURVEY IN THE SOUTHERN SKY by Janches, D., Close, S., Hormaechea, J. L., Swarnalingam, N., Murphy, A., O'Connor, D., Vandepeer, B., Fuller, B., Fritts, D. C., Brunini, C.

“…ABSTRACT We present an initial survey in the southern sky of the sporadic meteoroid orbital environment obtained with the Southern Argentina Agile MEteor Radar…”
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Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observational data from the SpreadFEx campaign by ABDU, M. A, ALAM KHERANI, E, BATISTA, I. S, DE PAULA, E. R, FRITTS, D. C, SOBRAL, J. H. A

“…The data from ground based experiments conducted during the 2005 SpreadFEx campaign in Brazil are used, with the help of theoretical model calculations, to…”
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Gravity Wave‐Induced Ionospheric Irregularities in the Postsunset Equatorial Valley Region by Hysell, D. L., Fritts, D. C., Laughman, B., Chau, J. L.

“…Plasma irregularities in the postsunset equatorial valley region ionosphere are investigated experimentally and through numerical simulation. Coherent radar…”
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QBO Modulation of the Mesopause Gravity Wave Momentum Flux over Tierra del Fuego by De Wit, R. J., Janches, D., Fritts, D. C., Hibbins, R. E.

“…The interannual variability of the mesosphere and lower thermosphere (MLT) gravity wave momentum flux over southern mid latitudes (53.7degS) has been studied…”
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Large‐amplitude mesospheric response to an orographic wave generated over the Southern Ocean Auckland Islands (50.7°S) during the DEEPWAVE project by Pautet, P.‐D., Taylor, M. J., Fritts, D. C., Bossert, K., Williams, B. P., Broutman, D., Ma, J., Eckermann, S. D., Doyle, J. D.

“…The Deep Propagating Gravity Wave Experiment (DEEPWAVE) project was conducted over New Zealand and the surrounding regions during June and July 2014, to more…”
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Assessment of gravity wave momentum flux measurement capabilities by meteor radars having different transmitter power and antenna configurations by Fritts, D. C., Janches, D., Hocking, W. K., Mitchell, N. J., Taylor, M. J.

“…Measurement capabilities of five meteor radars are assessed and compared to determine how well radars having different transmitted power and antenna…”
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Reconstruction of the gravity wave field from convective plumes via ray tracing by VADAS, S. L, FRITTS, D. C

“…We implement gravity wave (GW) phases into our convective plume and anelastic ray trace models. This allows us to successfully reconstruct the GW velocity,…”
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Comparison of mesospheric winds from a high-altitude meteorological analysis system and meteor radar observations during the boreal winters of 2009–2010 and 2012–2013 by McCormack, J., Hoppel, K., Kuhl, D., de Wit, R., Stober, G., Espy, P., Baker, N., Brown, P., Fritts, D., Jacobi, C., Janches, D., Mitchell, N., Ruston, B., Swadley, S., Viner, K., Whitcomb, T., Hibbins, R.

“…We present a study of horizontal winds in the mesosphere and lower thermosphere (MLT) during the boreal winters of 2009–2010 and 2012–2013 produced with a new…”
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Numerical Simulation of Orographic Gravity Waves Observed Over Syowa Station: Wave Propagation and Breaking in the Troposphere and Lower Stratosphere by Kohma, M., Sato, K., Fritts, D. C., Lund, T. S.

“…A high‐resolution model in conjunction with realistic background wind and temperature profiles has been used to simulate gravity waves (GWs) that were observed…”
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Interferometric meteor head echo observations using the Southern Argentina Agile Meteor Radar by Janches, D., Hocking, W., Pifko, S., Hormaechea, J. L., Fritts, D. C., Brunini, C., Michell, R., Samara, M.

“…A radar meteor echo is the radar scattering signature from the free electrons generated by the entry of extraterrestrial particles into the atmosphere. Three…”
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Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides by Fritts, D. C., Janches, D., Iimura, H., Hocking, W. K., Mitchell, N. J., Stockwell, R. G., Fuller, B., Vandepeer, B., Hormaechea, J., Brunini, C., Levato, H.

“…The Southern Argentina Agile Meteor Radar (SAAMER) was installed at Rio Grande on Tierra del Fuego (53.8°S, 67.8°W) in May 2008 and has been operational for…”
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Gravity wave effects on postsunset equatorial F region stability by Hysell, D. L., Jafari, R., Fritts, D. C., Laughman, B.

“…The influence of gravity waves on the stability of the postsunset equatorial F region ionosphere is investigated numerically. For this investigation, we use…”
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Simultaneous observation of ionospheric plasma bubbles and mesospheric gravity waves during the SpreadFEx Campaign by TAKAHASHI, H, TAYLOR, M. J, SOBRAL, J. H. A, ARRUDA, D, VADAS, S. L, SABBAS, F. S, FRITTS, D. C, PAUTET, P.-D, MEDEIROS, A. F, GOBBI, D, WRASSE, C. M, FECHINE, J, ABDU, M. A, BATISTA, I. S, PAULA, E

“…During the Spread F Experiment campaign, under NASA Living with a Star (LWS) program, carried out in the South American Magnetic Equator region from 22…”
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Observation of a mesospheric front in a thermal-doppler duct over King George Island, Antarctica by Bageston, J V, Wrasse, C M, Batista, P P, Hibbins, R E, Fritts, D C, Gobbi, D, Andrioli, V F

“…A mesospheric front was observed with an all-sky airglow imager on the night of 9–10 July 2007 at Ferraz Station (62° S, 58° W), located on King George island…”
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The life cycle of instability features measured from the Andes Lidar Observatory over Cerro Pachon on 24 March 2012 by Hecht, J. H., Wan, K., Gelinas, L. J., Fritts, D. C., Walterscheid, R. L., Rudy, R. J., Liu, A. Z., Franke, S. J., Vargas, F. A., Pautet, P. D., Taylor, M. J., Swenson, G. R.

“…The Aerospace Corporation's Nightglow Imager (ANI) observes nighttime OH emission (near 1.6 μm) every 2 s over an approximate 73° field of view. ANI had…”
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