Dual-channel polarization lidar monitoring of sandstorm and its transportation research

作者：Fan Guangqiang^*; Liu Jianguo; Zhang Tianshu; Dong Yunsheng; Zhao Xuesong; Xie Pinhua; Liu Wenqing

来源：Chinese Journal of Lasers, 2011, 38(SUPPL. 1): s114006-1-s114006-5.

DOI：10.3788/CJL201138.s114006

• Air pollution index
• Backward trajectory
• Dual channel
• Extinction coefficients
• Inner Mongolia
• Lidar measurements
• Main parameters
• Polarization ratio
• Sand particles
• Transportation research
• Two wavelength
• Wind directions

The charactistic, the main parameters and the data processing solution of two-wavelength polarization lidar are introduced. The sand pollution transportration process before and after the opening ceremony for the Shanghai World Expo is studied. The results show that the sandstorm was transported from northwest, by backward trajectories analysis the sandstorm comed from the Inner Mongolia region. The sandstorm ceascced and formend again in the sandstorm transportation. After sandstorm, the main wind direction changed into northeast, which was favorable for removing sand particle. The comparision between extinction coefficient by the polarization lidar measurement and the ground PM10 air pollution index (API) is presented, which shows the satisfactory coherence of the different method-derived results.

• 出版日期2011