Gravity wave observations in the summertime polar mesosphere from the Cloud Imaging and Particle Size (CIPS) experiment on the AIM spacecraft |
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| Authors: | A. Chandran D.W. Rusch S.E. Palo G.E. Thomas M.J. Taylor |
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| Affiliation: | 1. Department of Aerospace Engineering, University of Colorado, Boulder, CO, USA;2. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA;3. Center for Atmospheric and Space Sciences and Physics Department, Utah State University, Logan, UT, USA;1. University of Alaska, Fairbanks, USA;2. Virginia Polytechnic Institute and State University, Blacksburg, USA;3. University of Rostock, Kuehlungsborn, Germany;4. University of Rostock, Kuehlungsborn, Germany;5. University of Colorado, Boulder, USA;1. Center for Space Sciences and Engineering and Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, 24061, United States;2. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, United States;3. GATS Inc., Newport News, VA 23606, United States;4. Computational Physics Inc., Boulder, CO 80301, United States;5. Center for Atmospheric Sciences, Hampton University, Hampton, VA 23668, United States;1. Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061, USA;2. Computational Physics Inc., Boulder, CO 80301, USA;3. Laboratory for Atmospheric and Space Physics and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO 80303, USA;1. Space Science Division, Naval Research Laboratory, Washington, DC 20375, USA;2. Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Leopoldshafen, Germany;3. School of Physics, Astronomy and Computational Sciences, George Mason University, Fairfax, VA, USA;4. Laboratory of Atmospheric and Space Physics and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USA;5. Center for Atmospheric Sciences, Hampton University, Hampton, VA, USA;6. Department of Earth and Space Sciences, Chalmers University of Technology, Göteborg, Sweden;1. Center for Space Science and Engineering Research, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24060, USA;2. Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA;3. Institute of Physics, Ernst-Moritz-Arndt-University of Greifswald, Greifswald, Germany;4. GATS, Inc., Driggs, ID 83422, USA;5. Laboratory for Atmospheric and Space Physics and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO 80303, USA;1. Center for Space Science and Engineering Research, Bradley Department of Electrical and Computer Engineering, Virginia Tech, Virginia, USA;2. Department of Earth and Planetary Science, University of Tokyo, Tokyo, Japan;3. Atmospheric and Planetary Science, Hampton University, Hampton, VA, USA;4. National Institute of Polar Research, Tachikawa, Japan |
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| Abstract: | We present the first results of gravity wave signatures on polar mesospheric clouds (PMCs) during the summer of 2007, in the northern hemisphere polar region. The Cloud Imaging and Particle Size (CIPS) experiment has one of the three instruments on board the NASA Aeronomy of Ice in the Mesosphere (AIM) spacecraft, which was launched into a sun-synchronous orbit on April 25, 2007. CIPS is a four-camera, wide-field (120°×80°) imager designed to measure PMC morphology and particle properties. One of the objectives of AIM is to investigate gravity wave effects on PMC formation and evolution. CIPS images show distinct wave patterns and structures in PMCs that are similar to ground-based photographs of noctilucent clouds (NLCs). The observed horizontal wavelengths of the waves were found to vary between 15 and 320 km, with smaller-wavelength structures of less than 50 km being the most common. In this paper we present examples of individual quasi-monochromatic wave events observed by CIPS and statistics on the wave patterns observed in the northern hemisphere during the summer months of 2007, together with a map showing the geographic locations of gravity wave events observed from CIPS. |
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