空间科学学报2017，Vol.37Issue(4)：424-431,8.DOI:10.11728/cjss2017.04.424
2012年7月海口与北京大气钠层观测
Observations of Sodium Layer over Beijing and Haikou in July 2012
摘要
Abstract
The observations were conducted by lidar over Haikou (20°N,110°E) and Beijing (40°N,116°E) in July 2012.The basic characteristics of the sodium layer density at a low-latitude and midlatitude location are analyzed by the observations.The double sodium layer events and sporadic layer were observed over Beijing and Haikou.A Nd:YAG laser and a pumped dye laser are used to generate the probing beam.The wavelength of the dye laser is set to be 589 nm by a sodium fluorescence cell.The energy and divergence of the beam are set about 45 mJ and 1 mrad,respectively.The backscattered fluorescence photons from the sodium layer are collected by a telescope with a primary mirror which diameter is equal to 1000 mm.There are 9 events of Sporadic Sodium Layer (SSL) and 1 event of Double Sodium Layer (DSL) occurred in Haikou,and 1 event of SSL and 4 events of DSL occurred in Beijing.The variety and distribution of the sodium density over Beijing and Haikou during the night of July 1,2012 are compared.A DSL structure was observed and it had lasted 120min during the night of July 1,2012 over Haikou,but no DSL structure occurred over Beijing.关键词
激光雷达/中高层大气/钠层密度/大气光学Key words
Lidar/Mesosphere and lower-thermosphere/Sodium layer density/Atmospheric optics分类
天文与地球科学引用本文复制引用
张铁民,王继红,王林茂,陈学明,吴建清,邹旭,彭鸿雁..2012年7月海口与北京大气钠层观测[J].空间科学学报,2017,37(4):424-431,8.基金项目
国家自然科学基金项目(41364005,41564006)和海南省自然科学基金项目(20164163)共同资助 （41364005,41564006）
