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Full-Text Articles in Physical Sciences and Mathematics
Investigation Of A Mesospheric Gravity Wave Ducting Event Using Coordinated Sodium Lidar And Mesospheric Temperature Mapper Measurements At Alomar, Norway (69°N), Katrina Bossert, David C. Fritts, Pierre-Dominique Pautet, Michael J. Taylor, Bifford P. Williams, William R. Pendleton Jr.
Investigation Of A Mesospheric Gravity Wave Ducting Event Using Coordinated Sodium Lidar And Mesospheric Temperature Mapper Measurements At Alomar, Norway (69°N), Katrina Bossert, David C. Fritts, Pierre-Dominique Pautet, Michael J. Taylor, Bifford P. Williams, William R. Pendleton Jr.
Publications
New measurements at the ALOMAR observatory in northern Norway (69°N, 16°E) using the Weber sodium lidar and the Advanced Mesospheric Temperature Mapper (AMTM) allow for a comprehensive investigation of a gravity wave (GW) event on 22 and 23 January 2012 and the complex and varying propagation environment in which the GW was observed. These observational techniques provide insight into the altitude ranges over which a GW may be evanescent or propagating and enable a clear distinction in specific cases. Weber sodium lidar measurements provide estimates of background temperature, wind, and stability profiles at altitudes from ~78 to 105 km. Detailed …
A Coordinated Investigation Of The Gravity Wave Breaking And The Associated Dynamical Instability By A Na Lidar And An Advanced Mesosphere Temperature Mapper Over Logan, Ut (41.7°N, 111.8°W), Xuguang Cai, Tao Yuan, Yucheng Zhao, Pierre-Dominique Pautet, Michael J. Taylor, William R. Pendleton Jr.
A Coordinated Investigation Of The Gravity Wave Breaking And The Associated Dynamical Instability By A Na Lidar And An Advanced Mesosphere Temperature Mapper Over Logan, Ut (41.7°N, 111.8°W), Xuguang Cai, Tao Yuan, Yucheng Zhao, Pierre-Dominique Pautet, Michael J. Taylor, William R. Pendleton Jr.
Publications
The impacts of gravity wave (GW) on the thermal and dynamic characteristics within the mesosphere/lower thermosphere, especially on the atmospheric instabilities, are still not fully understood. In this paper, we conduct a comprehensive and detailed investigation on one GW breaking event during a collaborative campaign between the Utah State University Na lidar and the Advanced Mesospheric Temperature Mapper (AMTM) on 9 September 2012. The AMTM provides direct evidence of the GW breaking as well as the horizontal parameters of the GWs involved, while the Na lidar's full diurnal cycle observations are utilized to uncover the roles of tide and GWs …
The Life Cycle Of Instability Features Measured From The Andes Lidar Observatory Over Cerro Pachon On 24 March 2012, J. H. Hecht, K. Wan, L. J. Gelinas, David C. Fritts, R. L. Walterscheid, R. J. Rudy, A. Z. Liu, S. J. Franke, F. A. Vargas, Pierre-Dominique Pautet, Michael J. Taylor, G. R. Swenson
The Life Cycle Of Instability Features Measured From The Andes Lidar Observatory Over Cerro Pachon On 24 March 2012, J. H. Hecht, K. Wan, L. J. Gelinas, David C. Fritts, R. L. Walterscheid, R. J. Rudy, A. Z. Liu, S. J. Franke, F. A. Vargas, Pierre-Dominique Pautet, Michael J. Taylor, G. R. Swenson
Publications
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 previously been used to study instability features seen over Maui. Here we describe observations of instabilities seen from 5 to 8 UT on 24 March 2012 over Cerro Pachon, Chile, and compare them with previous results from Maui, with theory, and with Direct Numerical Simulations (DNS). The atmosphere had reduced stability because of the large negative temperature gradients measured by a Na lidar. Thus, regions of dynamical and convective instabilities are expected to form, depending …
An Advanced Mesospheric Temperature Mapper For High-Latitude Airglow Studies, Pierre-Dominique Pautet, Michael J. Taylor, William R. Pendleton Jr., Yucheng Zhao, Tao Yuan, R. Esplin, D. Mclain
An Advanced Mesospheric Temperature Mapper For High-Latitude Airglow Studies, Pierre-Dominique Pautet, Michael J. Taylor, William R. Pendleton Jr., Yucheng Zhao, Tao Yuan, R. Esplin, D. Mclain
Publications
Over the past 60 years, ground-based remote sensing measurements of the Earth’s mesospheric temperature have been performed using the nighttime hydroxyl (OH) emission, which originates at an altitude of ∼87 km∼87 km. Several types of instruments have been employed to date: spectrometers, Fabry–Perot or Michelson interferometers, scanning-radiometers, and more recently temperature mappers. Most of them measure the mesospheric temperature in a few sample directions and/or with a limited temporal resolution, restricting their research capabilities to the investigation of larger-scale perturbations such as inertial waves, tides, or planetary waves. The Advanced Mesospheric Temperature Mapper (AMTM) is a novel infrared digital imaging …