武汉上空钠层与钾层的同时激光雷达观测  

Using Lidar to Simultaneously Observe the Sodium Layer and Potassium Layer Over Wuhan

作　　者：李勇杰[1,2] 程学武[1] 李发泉[1] 杨勇[1,2] 林鑫[1,2] 龚顺生[1] 

机构地区：[1]中国科学院武汉物理与数学研究所,武汉430071 [2]中国科学院研究生院,北京100049

出　　处：《空间科学学报》2012年第1期68-74,共7页Chinese Journal of Space Science

基　　金：国家自然科学基金项目(10978003;4095012;41104101;41101334); 中国科学院空间科学与应用研究中心空间天气学国家重点实验室开放课题;武汉大学测绘遥感信息工程国家重点实验基金项目共同资助

摘　　要：简要介绍了(WIPM)双波长共振荧光激光雷达系统和数据处理方法,并利用其对武汉上空钠层和钾层进行了多天的同时观测,通过对钠层和钾层的绝对数密度、柱密度以及质心高度的计算,同时与中纬度其他地区的相关参数进行比较,得出武汉上空钠层的绝对数密度、柱密度以及质心高度与其他中纬度地区十分相近的结论,并且发现了一个钠层突发和钾层突发不同时出现的现象.A dual-wavelength lidar with 532 nm and 589 nm was setup in Wuhan Institute of Physics and Mathematics （30.5°N, 114.3°E） to detect atmosphere from 1-110km simultaneously. Recently, a pulse dye laser （ND6000） pumped by the 532 nm beam was employed to transmit a 770 nm laser beam, which allow the new dual-wavelength lidar to measure the potassium layer and sodium layer simultaneously. In this paper, the dual-wavelength lidar systems and resonant fluorescence data processing method are introduced. The number density and column density of the sodium layer and potassium layer over Wuhan were calculated also. The results show that the density and column density of sodium layer and potassium layer both are almost the same with previous results observed by other sodium and potassium lidar in Mid-latitude region. Moreover, another interesting thing found is that potassium and sodium layer are not always the same.

关 键 词：激光雷达 钠层 钾层 绝对数密度 柱密度 质心高度 

分 类 号：P412.25[天文地球—大气科学及气象学]