Large Temperature Gradients and Strong Wave Activity in the Arctic Summer Mesopause Region During the MIDAS/MaCWAVE Rocket Campaign

Details Large Temperature Gradients and Strong Wave Activity in the Arctic Summer Mesopause Region During the MIDAS/MaCWAVE Rocket Campaign Large Temperature Gradients and Strong Wave Activity in the Arctic Summer Mesopause Region During the MIDAS/MaCWAVE Rocket Campaign

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa51a0492w&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA51A-0492

Physics

0350 Pressure, Density, And Temperature, 3332 Mesospheric Dynamics, 3384 Waves And Tides

Scientific paper

The Weber sodium resonance lidar at ALOMAR measured sodium density, temperature, and zonal wind at altitudes from 85 to 97 km in June/July, 2002, during the MIDAS/MaCWAVE rocket campaign at the Andoya Rocket Range (69N,16E). During the first rocket salvo on July 1, 2003, the sodium lidar measured very large vertical gradients of temperature, sodium density, and zonal wind lasting several hours. The temperature changed by 40K over 1 km in altitude with the sodium density changing by a factor of 10 at the same height. The zonal wind also showed a strong gradient, although not as striking as in the temperature. During both salvos on July 1 and July 4, 2003, the sodium density measurements showed great variability at periods ranging from tens of minutes to tens of hours presumably due to gavity waves and tides. The sodium layer exhibited large changes in abundance and layer height with several sporadic layers and sharp bottomside gradients. We will investigate the properties of the waves and their possible connection to the strong vertical gradients of temperature, wind, and sodium density.

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