The ANGWIN Antarctic Research Program: First Results on Coordinated Trans-Antarctic Gravity Wave Measurements

Wednesday, 17 December 2014
Michael J Taylor1, Pierre-Dominique Pautet2, Yucheng Zhao2, Takuji Nakamura3, Mitsumu K Ejiri3, Damian J Murphy4, Tracy Moffat-Griffin5, Andrew John Kavanagh6, Hisao Takahashi7 and Cristiano M. Wrasse7, (1)Utah State Univ, Logan, UT, United States, (2)Utah State University, Logan, UT, United States, (3)National Inst of Polar Res., Tokyo, Japan, (4)Australian Antarctic Division, Kingston, TAS, Australia, (5)British Antarctic Survey, Cambridge, United Kingdom, (6)NERC British Antarctic Survey, Cambridge, CB3, United Kingdom, (7)INPE National Institute for Space Research, Sao Jose dos Campos, Brazil
ANGWIN (ANrctic Gravity Wave Instrument Network) is a new “scientist driven” research program designed to develop and utilize a network of Antarctic atmospheric gravity wave observatories, operated by different nations working together in a spirit of close scientific collaboration. Our research plan has brought together colleagues from several international institutions, all with a common goal to better understand the large “continental-scale” characteristics and impacts of gravity waves on the Mesosphere and Lower Thermosphere (MLT) environment over Antarctica. ANGWIN combines complementary measurements obtained using new and existing aeronomy instrumentation with new modeling capabilities. To date, our activities have focused on developing coordinated airglow image data of gravity waves in the MLT region at the following sites: McMurdo (US), Syowa (Japan), Davis (Australia), Halley (UK), Rothera (UK), and Comandante Ferraz (Brazil). These are all well-established international research stations that are uniformly distributed around the continental perimeter, and together with ongoing measurements at South Pole Station they provide unprecedented coverage of the Antarctic gravity wave field and its variability during the extended polar winter season. This presentation introduces the ANGWIN program and research goals, and presents first results on trans-Antarctic wave propagation using coordinated measurements during the winter season 2011. We also discuss future plans for the development of this exciting program for Antarctic research.