CIPS/AIM Observation of Polar Mesospheric Cloud Structures and NOGAPS-ALPHA Analysis of the Environment in Which These Structures Form

Details CIPS/AIM Observation of Polar Mesospheric Cloud Structures and NOGAPS-ALPHA Analysis of the Environment in Which These Structures Form CIPS/AIM Observation of Polar Mesospheric Cloud Structures and NOGAPS-ALPHA Analysis of the Environment in Which These Structures Form

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa14a..03t&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA14A-03

Physics

[0340] Atmospheric Composition And Structure / Middle Atmosphere: Composition And Chemistry, [3334] Atmospheric Processes / Middle Atmosphere Dynamics, [3360] Atmospheric Processes / Remote Sensing

Scientific paper

The Cloud Imaging and Particle Size (CIPS) experiment on the Aeronomy of Ice in the Mesosphere (AIM) spacecraft images Polar Mesospheric Clouds (PMCs) using four cameras, each operating with a 15 nm passband centered at 265 nm. CIPS has provided images of PMCs containing numerous structures including the presence of 'ice voids'. These ice voids appear as a nearly circular ice free region with dark centers that are sometimes surrounded by an ice ring arc. Ice voids are also structurally similar to tropospheric cloud features and concentric gravity wave structures observed in the mesospheric airglow region. We document CIPS observations of ice voids during the Northern Hemisphere 2007 PMC season. We use the Naval Research Laboratory's Navy Operational Global Atmospheric Prediction System (NOGAPS) Advanced Level Physics and High Altitude (ALPHA) model to analyze what these ice voids can tell us about the mesospheric environment in which they form and what possible connections there may be with the lower atmosphere.

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