Evaluation of stratospheric ozone, temperature, and aerosol profiles from the LOANA lidar in Antarctica

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We present an evaluation of observations from the Lidar Ozone and Aerosol for NDACC in Antarctica (LOANA) at the Dumont d'Urville station, Antarctica. This instrument is part of the Network for the Detection of Atmospheric Composition Change (NDACC), and ensures continuity with lidar measurements made since 1989 with the previous instrument at this site. This study is based on the dataset from 2008 to 2009, and comparisons are made with observations from balloon soundings, and from three satellite experiments: Aura/MLS, TIMED/SABER, and CALIOP/CALIPSO. The lidar ozone data are in very good agreement with the balloon sounding data (ECC sensor), revealing a bias of less than 3% between 17 and 34 km. For temperature, the lidar shows a low bias of -3 K at 20 km when compared with Aura/MLS. Between 30 and 50 km, the bias is less than 2 K. We also present our initial results showing diurnal variations in temperature. The amplitude of these diurnal cycles is on the order of 1 K and is unlikely to account for the temperature biases between LOANA and the reference instruments. Comparisons of total attenuated backscatter reveal good qualitative agreement between LOANA and CALIOP, with differences of less than 30% in the derived optical depth. © 2012 Elsevier B.V. and NIPR.




David, C., Haefele, A., Keckhut, P., Marchand, M., Jumelet, J., Leblanc, T., … Quatrevalet, M. (2012). Evaluation of stratospheric ozone, temperature, and aerosol profiles from the LOANA lidar in Antarctica. Polar Science, 6(3–4), 209–225. https://doi.org/10.1016/j.polar.2012.07.001

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