Document Type

Poster

Journal/Book Title/Conference

2014 CEDAR Workshop

Publication Date

6-22-2014

Abstract

The ANtarctic Gravity Wave Instrument Network (ANGWIN) is an NSF sponsored international program designed to develop and utilize a network of gravity wave observatories using existing and new instrumentation operated at several established research stations around the continent. The primary goal is to better understand and quantify large-scale gravity wave climatology and their effects on the upper atmosphere over Antarctica. ANGWIN currently comprises research measurements from five nations (U.S., U.K., Australia, Japan, and Brazil) at seven international stations. Utah State University’s Atmospheric Imaging Lab operates all-sky infrared and CCD imagers and an Advanced Mesospheric Temperature Mapper (AMTM) imager at several research stations (Davis, Halley, Rothera, McMurdo, and South Pole). In this poster we present new measurements of short-period mesospheric gravity waves imaged from McMurdo Station (77°S, 166°E) on Ross Island. This camera has operated alongside the University of Colorado Fe Lidar during the past two winter seasons (March-September 2012, 2013). Image data were recorded every ~10 seconds enabling detailed measurements of individual gravity wave events in the infrared OH emission layer (~87 km). Here we present example wave data and novel measurements of the wave characteristics observed during these two winter seasons. The results are contrasted with other published and new ANGWIN wave measurements from around the continent.

Comments

Poster presented at the 2014 CEDAR workshop. PDF of poster is available for download through link above.

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