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USU Rayleigh Lidar and Assimilative Models to Examine Coupling Between the Mesosphere and Lower Atmosphere

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The scarcity of supporting mesospheric measurements leaves assimilative models lacking when it comes to connecting lower and upper atmospheric phenomena. Observational records from the Rayleigh-scatter lidar system at the Atmospheric Lidar Observatory (ALO-USU; 41.74° N, 111.81° W), a part of Utah State University's Center for Atmospheric and Space Sciences (CASS), include absolute temperatures in this regime that can be compared with the upper bounds of reanalysis models near the stratopause. This study examines surface weather surrounding the appearance of significant temperature outliers in ALO-USU observations and model data alike. Speculation on possible relationships between conditions in the troposphere and mesosphere follows. Model data sources comprise the Climate Prediction Center (CPC), the European Centre for Medium-Range Weather Forecasts' (ECMWF) ERA-Interim, and NASA's Modern-Era Retrospective Analysis for Research and Applications (MERRA).


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