2012年7月海口与北京大气钠层观测

张铁民; 王继红; 王林茂; 陈学明; 吴建清; 邹旭; 彭鸿雁

doi:10.11728/cjss2017.04.424

2012年7月海口与北京大气钠层观测

doi: 10.11728/cjss2017.04.424

1. 海南师范大学物理与电子工程学院海口 571158;
2. 中国科学院国家空间科学中心空间天气学国家重点实验室北京 100190

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

详细信息

作者简介:
张铁民,E-mail:zhangtiemin@sohu.com;王继红,E-mail:jhwang@nssc.ac.cn

中图分类号: P352
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出版历程
- 收稿日期: 2016-05-03
- 修回日期: 2017-03-28
- 刊出日期: 2017-07-15

Observations of Sodium Layer over Beijing and Haikou in July 2012

1. College of Physics and Electronic Engineering, HaiNan Normal University, Haikou 571158;
2. State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190

摘要

摘要: 2012年7月海南激光雷达站（20°N，110°E）和北京激光雷达站（40°N，116°E）同时进行观测，对比低纬和中纬度中高层大气钠层分布及密度变化特性.两地使用相同的Nd：YAG激光器和泵浦染料激光器产生589nm激光，设定相同的激光参数，使用相同的直径1000mm的望远镜接收钠层的光子回波.两地均观测到突发钠层和双钠层事件.其中：海口观测到突发钠层事件9个，双钠层事件1个；北京观测到突发钠层事件1个，双钠层事件4个.分析海口和北京同一天夜间观测的大气钠层特性，对比两地同时观测到的钠层高度与密度的不同变化，发现当天夜间低纬度地区海口市上空钠层出现双钠层结构，持续时间123min，但是北京上空钠层没有发现该结构.
- 激光雷达 /
- 中高层大气 /
- 钠层密度 /
- 大气光学
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 mid-latitude 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 589nm by a sodium fluorescence cell. The energy and divergence of the beam are set about 45mJ and 1mrad, respectively. The backscattered fluorescence photons from the sodium layer are collected by a telescope with a primary mirror which diameter is equal to 1000mm. 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.
- Lidar /
- Mesosphere and lower-thermosphere /
- Sodium layer density /
- Atmospheric optics

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参考文献(16)

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