SA41A:
The Upper Mesosphere and Lower Thermosphere: Observations, Modeling, and Implications for Future Directions I


Submit an Abstract to this Session


Session ID#: 61550

Session Description:
The upper mesosphere and lower thermosphere (MLT) is an important transition zone through which atmospheric disturbances below connect with the thermosphere above.  The MLT harbors key information on dynamics, chemistry, long-term change, vertical coupling, and the role of solar forcing.  Space and ground-based missions provide significant advances in observations of temperature, gas concentrations and radiances, ice layers, particulates which serve as ice nucleation sites, and lower atmosphere dynamics sources. Sophisticated multidimensional models now incorporate new dynamics mechanisms, microphysics calculations, and crucial tools to understand coupling between mesopause ice layers and the local environment. This session discusses advances in both observations and modeling and to discuss the implications of those new results for future directions in MLT science. We solicit papers discussing the composition, structure and variability of the MLT environment, ice nucleation sources and processes, vertical and meridional coupling, model advances and the extent, causes and implications of long-term trends.
Primary Convener:  Scott Martin Bailey, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
Convener:  James M Russell III, Hampton University, Department of Atmospheric and Planetary Sciences, Hampton, VA, United States
Primary Liaison:  Scott Martin Bailey, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
Chairs:  Scott Martin Bailey, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and James M Russell III, Hampton University, Department of Atmospheric and Planetary Sciences, Hampton, VA, United States
OSPA Liaison:  Scott Martin Bailey, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States

Cross-Listed:
  • A - Atmospheric Sciences
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0340 Middle atmosphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3303 Balanced dynamical models [ATMOSPHERIC PROCESSES]
3332 Mesospheric dynamics [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Variations of noctilucent cloud characteristics on centennial timescales (Invited) (350004)
Franz-Josef Luebken1, Uwe Berger1 and Gerd Baumgarten2, (1)Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany, (2)Leibniz Institute of Atmospheric Physics at the University of Rostock, Optical and Rocket Soundings, Kühlungsborn, Germany
WATER VAPOR INCREASES AFTER 2002 IN THE STRATOSPHERE AND MESOSPHERE OBSERVED BY SABER AND MLS (408510)
Jia Yue, GSFC, NASA, Greenbelt, United States, James M Russell III, Hampton University, Department of Atmospheric and Planetary Sciences, Hampton, VA, United States, Pingping Rong, Richmond Hill, ON, Canada, Martin G Mlynczak, NASA Langley Research Ctr, Hampton, United States, Quan Gan, Clemson University, Clemson, SC, United States, Rolando R Garcia, Natl Ctr Atmospheric Research, Boulder, CO, United States, Jae N. Lee, UNIVERSITY OF MARYLAND BALTIMORE COUNTY, Greenbelt, United States and Dong Liang Wu, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Seasonality and Solar Cycle Response of SABER CO2-derived and WACCM-X Eddy Diffusion Coefficients in the Mesosphere and Lower Thermosphere Region (401918)
Cornelius Csar Jude Salinas, Institute of Space Science National Central University, Jhongli, Taiwan, Loren C Chang, Institute of Space Science and Engineering, National Central University, Taoyuan City, Taiwan, Mao-Chang Liang, Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, Jia Yue, GSFC, NASA, Greenbelt, United States, Liying Qian, National Center for Atmospheric Research, High Altitude Observatory, Boulder, United States, James M Russell III, Hampton University, Department of Atmospheric and Planetary Sciences, Hampton, VA, United States and Martin G Mlynczak, NASA Langley Research Ctr, Hampton, United States
Solar cycle variability of nonmigrating tides in the infrared cooling of the lower thermosphere from SABER and photochemical modeling (395193)
Nirmal Nischal1, Jens Oberheide2, Martin G Mlynczak3, Daniel Robert Marsh4 and Quan Gan1, (1)Clemson University, Clemson, SC, United States, (2)Clemson University, Clemson, United States, (3)NASA Langley Research Ctr, Hampton, United States, (4)University of Leeds, School of Chemistry, Leeds, United Kingdom
The Role of the Polar Vortex in Whole Atmosphere Coupling (Invited) (418025)
V Lynn Harvey, Laboratory for Atmospheric and Space Physics, Boulder, United States, Cora E Randall, Univ Colorado, Boulder, CO, United States, Erich Becker, Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany, Larisa P Goncharenko, MIT, Pepperell, United States, Charles Bardeen, National Center for Atmospheric Research, Boulder, United States and Jeff Allen France, White Ridge Solutions, LLC, Hagerstown, United States
Study on Dusty Plasma in the Summer Polar Mesosphere using Satellite and Radar Measurements at Eureka, Canada (467167)
Nimalan Swarnalingam, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Wayne K Hocking, Univ of Western Ontario, London, ON, Canada, Erin C M Dawkins, NASA Goddard Space Flight Center, Greenbelt, United States and Robert M Robinson, Catholic University of America, Physics, Washington, United States
High spatiotemporal resolution imaging of atmospheric structures at the polar mesosphere during summer using MAARSY in a MIMO configuration (367928)
Jorge Luis Chau1, Maosheng He2, Juan Miguel Miguel Urco3, Juha Vierinen4 and Ralph Latteck2, (1)Leibniz Institute of Atmospheric Physics at the University of Rostock, Kühlungsborn, Germany, (2)Leibniz Institute of Atmospheric Physics, Radar Remote Sensing, Kühlungsborn, Germany, (3)Leibniz Institute of Atmospheric Physics at the University of Rostock, Radar Remote Sensing, Kühlungsborn, Germany, (4)The Arctic University of Norway, Department of Physics and Technology, Tromsø, Norway
Towards a Permanent Thermosphere-Mesosphere Observing System (391394)
Martin G Mlynczak, NASA Langley Research Center, Hampton, VA, United States, Linda A Hunt, SSAI, Hampton, VA, United States, Benjamin T Marshall, GATS, Inc., Newport News, VA, United States, John T Emmert, Naval Research Lab, Washington, DC, United States, Rolando R Garcia, Natl Ctr Atmospheric Research, Boulder, CO, United States, Daniel Robert Marsh, University of Leeds, School of Chemistry, Leeds, United Kingdom, Jia Yue, GSFC, NASA, Greenbelt, United States and James M Russell III, Hampton University, Department of Atmospheric and Planetary Sciences, Hampton, VA, United States

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