摘要
Angstrom波长指数能够很好地反映大气气溶胶粒子的半径大小,而Raman方法测量对流层气溶胶较Mie散射方法假设的参数少,测量精度高。在介绍了一台双波长探测对流层气溶胶光学特性的L625 Ranman-Mie激光雷达系统及其测量原理的基础上,利用该激光雷达的探测数据,计算并分析了合肥地区对流层气溶胶的波长指数,给出了合肥地区对流层气溶胶光学特性的一些典型特征并讨论了其成因。结果表明L625 激光雷达测量对流层气溶胶波长指数是可靠的。
Angstrom wavelength exponents can well reflect the size of atmospheric aerosol particles. Raman inethod supposes less parameters but acquires higher precision when compared with Mie method. The L625 Raman-Mie dual-wavelength lidar which has been developed for observations of tropospheric aerosol optical properties is presented, then the tropospheric aerosol wavelength exponents are calculated and analyzed using data from L625 lidar. Some typical characteristics of tropospheric aerosol optical properties are observed and discussed. Results indicate that L625 lidar is reliable for the measurement of tropospheric aerosol wavelength exponents.
出处
《量子电子学报》
CAS
CSCD
北大核心
2006年第3期341-345,共5页
Chinese Journal of Quantum Electronics
基金
国家863计划激光技术领域资助课题
