Long-term Observations of Winds and Waves over Bear Lake Observatory

Details Long-term Observations of Winds and Waves over Bear Lake Observatory Long-term Observations of Winds and Waves over Bear Lake Observatory

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa31a1709f&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA31A-1709

Physics

[6952] Radio Science / Radar Atmospheric Physics

Scientific paper

A long-term mesospheric wind data set, spanning the most recent solar cycle, has been acquired at the Utah State University Bear Lake Observatory (BLO) in Garden City, Utah [41.9°N, 111.4°W]. The data set is comprised of imaging Doppler interferometry (IDI) and meteor wind radar (MWR) measurements covering the period of 1998 until present. The IDI measurements were implemented on a NOAA HF Dynasonde radar in 1998 and continued until late 2005. During a 4-month period in 2000, an all-sky VHF SKiYMET MWR operated in conjunction with the Dynasonde and provided a correlative data set between the IDI and MWR wind measurement techniques at BLO. During that brief campaign, IDI wind and tide measurements were found to closely match those measured by the MWR, not only during the day but also at night and at all overlapping heights from 80-95 km. In early 2008, another all-sky VHF SKiYMET MWR was installed at BLO and continues to make wind measurements. In this paper we present results from the wind, tide, and wave component analysis of this multi-year data set. The analysis includes investigation of the seasonal wind pattern behavior, year to year tidal amplitude and phase characteristics, and planetary wave climatology. The wind measurements are shown to compare well to standard atmospheric model long-term trending predictions, but to also include seasonal and short-term variations that demonstrate a rich variety of mesospheric dynamics at play over BLO.

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