Lidar Measurement of Optical Properties of Cirrus Clouds at Kwangju, Korea

  • Noh, Y.M. (Advanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science & Engineering, Kwangju Institute of Science and Technology (KJIST)) ;
  • Choi, S.C. (Advanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science & Engineering, Kwangju Institute of Science and Technology (KJIST)) ;
  • Kim, Y.J. (Advanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science & Engineering, Kwangju Institute of Science and Technology (KJIST))
  • Published : 2003.11.03

Abstract

Cirrus clouds observation was conducted using a lidar system in order to measure their height, thickness and optical depth at Kwangju (35$^{\circ}$10'N, 126$^{\circ}$53'), Korea in winter, December 2002, and spring March and April 2003. Cirrus clouds at high altitude can be distinguished from atmospheric aerosols location by high depolarization ratio and high altitude. Cirrus clouds were observed at 5${\sim}$12km altitudes with a high depolarization ratio from 0.2 to 0.5. Optical depth of cirrus clouds had varied from 0.28 to 1.81. Radiative effect of observed cirrus cloud on climate system was estimated to be negative net flux from ?0.24 to ?31.04 W/m$^{2}$.

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