Status Report on Advanced Mesospheric Temperature Mapper Activities at ALOMAR Mike Taylor, P.-Dominique Pautet Utah State University ASAC Meeting - Hamburg, March 2011
Advanced Mesospheric Temperature Mapper (AMTM) for High-Latitude Research ALOMAR Arctic Lidar Observatory for High Latitude Research 69.3° N, 16.0° E InGaAs camera Optics made at USU/SDL South Pole Spectral range: 1.5-1.65 mm • Scientific Goals • Quantify effects of gravity wave dissipation on mesopause region at high latitudes. • Investigate impact of strong auroral storms on D-region dynamics. • Coordinated measurements with lidar, radar and rocket soundings of the high latitude Mesosphere, Thermosphere and Ionosphere (MTI) system. • Novel instrument: utilizes NIR (0.9-1.65 mm) InGaAs detector coupled to a specially developed large format (120° field of view) fast (f/1) telecentric optics.
AMTM Status • One camera system operated at Amundsen-Scott South Pole Station since the 2010 Austral winter • Second system installed at ALOMAR in Nov 2010 • Fully operational since Jan 2011 • InGaAs camera with high spectral sensitivity over 0.9-1.65 mm. New detector greatly simplifies AMTM automatic operation. 320 x 256 pixels detector
AMTM Spectral Range High-Latitude NIR OH Spectra Poker Flat, Alaska • Near-infrared OH spectral emission lines (around 1.5-1.65 µm) in presence of aurora. • AMTM observes OH (3,1) and (4,2) spectral lines for MLT temperature measurements (indicated in red)
Installation of the Advanced Mesospheric Temperature Mapper at ALOMAR (Nov 2010) Quartz dome Filter wheel F:1.0 telecentric lens IR camera (0.9-1.7μm) Temperature measurement every ~45s over 120° FOV
Summary of ObservationsNov 2010-Mar 2011 Problem with filter wheel Full moon Full moon To date
Current Status • We have just been awarded an operation grant for the AMTM by the US National Science Foundation for a period of 3 years. • The AMTM will be return to USU this summer for further calibration and to prepare for long-term operations at ALOMAR starting September 2011. • We have obtained many good nights of data already (23+ this year) and are eager to collaborate. • During this winter, we have determined that we can operate the AMTM even during moon up conditions which will significantly increase our observing hours in subsequent winter seasons. Note: The following 2 viewgraphs list dates and times for 2009-10 (OH imager only) and 2010-11 AMTM temperature imaging. Special thanks to ALOMAR for hiding the light on the tower, we noticed!
List of Best Nights of AMTM Observations - Nov 2010 to date Contact: email@example.com