Investigating Gravity Waves Measured by CIPS/AIM in the Northern/Southern Summer Polar Mesosphere

Details Investigating Gravity Waves Measured by CIPS/AIM in the Northern/Southern Summer Polar Mesosphere Investigating Gravity Waves Measured by CIPS/AIM in the Northern/Southern Summer Polar Mesosphere

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa43a1565z&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA43A-1565

Physics

3332 Mesospheric Dynamics, 3334 Middle Atmosphere Dynamics (0341, 0342), 3360 Remote Sensing, 3384 Acoustic-Gravity Waves

Scientific paper

The Aeronomy of Ice in the Mesosphere (AIM) satellite was launched on April 25, 2007. Its primary goal is to explore Polar Mesospheric Clouds (PMC) near the mesopause region, and investigate their formation and evolution. One of the instruments onboard AIM is the Cloud Imaging and Particle Size (CIPS), which is a four camera, wide-field (120° x 80°) UV imager designed to measure PMC morphology and particle sizes. Initial investigations using CIPS imagery have revealed a variety of cloud and wave-like structures, the latter due primary to gravity waves with a broad range of scale-sizes. Recently developed high resolution CIPS data (2x2 km pixel resolution) provide high quality images of PMCs, facilitating more detailed analysis of wave structures in the clouds. The effects of differing gravity wave sources in the northern and southern hemispheres on PMC visibility and structure are not yet known. In this presentation, we compare and contrast wave spectra obtained from CIPS data during the first summer season for both the northern (July, 2007) and southern (January, 2008) polar regions (utilizing the high resolution CIPS level 2a data), focusing on wave occurrence and dominant horizontal scale-sizes.

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