Raman激光雷达探测气溶胶消光系数求解新方法

利用Raman激光雷达测量的回波数据求解气溶胶消光系数，选用美国标准大气模式时，反演结果有可能会产生较大的误差。提出一种采用温度模式求解Raman激光雷达回波方程探测对流层大气气溶胶消光系数的新方法，并对这种新方法进行了详细的理论推导。通过与利用无线电探空仪测量数据计算的结果进行对比，发现二者具有较好的一致性。理论和实验均表明：通常情况下，采用温度模式方法求解Raman激光雷达方程探测对流层大气气溶胶消光系数是可行的。温度模式方法包含了探测地点的季节和地理海拔因素，较直接采用美国标准大气模式更加符合实际，可以减少反演结果的误差。

A new derivation method for aerosol extinction coefficient detected by Raman lidar

US Standard Atmospheric Model is often used to solve the aerosol extinction coefficient with echo data obtained by Raman lidar,but it may include big errors in results. Anew method,which uses the temperature mode to solving the atmospheric aerosol extinction coefficient in troposphere,is presented. It was theoretically derived. It's found that the result acquired by the new method agrees with that obtained by a radiosonde. Theory study and experiment result show that the temperature mode is feasible in solving the aerosol extinction coefficient in troposphere by Raman lidar in ordinary circumstances. The temperature mode is more suitable for the actual situation than US Standard Atmospheric Model,and can reduce the error of the inversion result since it includes the season and geographical elevation factors.