PMC Morphology and its Dependence on Water Vapor and Temperature: Highlights From the AIM Mission

Details PMC Morphology and its Dependence on Water Vapor and Temperature: Highlights From the AIM Mission PMC Morphology and its Dependence on Water Vapor and Temperature: Highlights From the AIM Mission

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa33c..05r&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA33C-05

Physics

0320 Cloud Physics And Chemistry, 0340 Middle Atmosphere: Composition And Chemistry, 1610 Atmosphere (0315, 0325), 3360 Remote Sensing

Scientific paper

The Aeronomy of Ice in the Mesosphere (AIM) mission has provided nearly two years of unprecedented data on polar mesospheric clouds (PMCs). This talk will provide an overview of AIM contributions to improving our understanding of PMC morphology and the dependence of PMCs on water vapor and temperature. Highlights from recent and ongoing investigations using measurements from the AIM Cloud Imaging and Particle Size (CIPS) experiment and Solar Occultation For Ice Experiment (SOFIE) will be described. We will show that AIM measurements of PMCs, water vapor, and temperature compare well with correlative data, and we will present determinations of SOFIE and CIPS particle sizes. Correlations between SOFIE measurements of water vapor, temperature, and PMCs, as well as between CIPS measurements of PMCs over the polar region and ancillary (global) measurements of water vapor and temperature, suggest mechanistic connections between the forcing variables and PMCs. These connections are explored further with two different models, the Navy Operational Global Atmospheric Prediction System (NOGAPS) and the National Center for Atmospheric Research Whole Atmosphere Community Climate Model (WACCM).

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