海口中层大气温度变化特性的Rayleigh激光雷达观测研究  

Temperature variation characteristics in the middle atmosphere studied with Rayleigh lidar at Haikou(19.9°N,110.3°E)

作　　者：龚少华[1,2] 杨洁 杨国韬 徐寄遥 李发泉 丁宗华 王钰茹[1] 陈伟鹏 彭鸿雁 符运良[1] 曲佚[1] 刘汉军 沈振江[1] 孙书娟[1] 吴伟[1] 羊大立[1] 程学武[3] GONG ShaoHua;YANG Jie;YANG GuoTao;XU JiYao;LI FaQuan;DING ZongHua;WANG YuRu;CHEN WeiPeng;PENG HongYan;FU YunLiang;QU Yi;LIU HanJun;SHEN ZhenJiang;SUN ShuJuan;WU Wei;YANG DaLi;CHENG XueWu(College of Physics&Electronic Engineering,Hainan Normal University,Haikou Hainan 571158,China;State Key Laboratory of Space Weather,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China;Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao 266107,China)

机构地区：[1]海南师范大学物理与电子工程学院,海南海口571158 [2]中国科学院国家空间科学中心空间天气国家重点实验室,北京100190 [3]中国科学院精密测量科学与技术创新研究院,武汉430071 [4]电波环境国家重点实验室,中国电波传播研究所,青岛266107

出　　处：《地球物理学报》2023年第5期1876-1887,共12页Chinese Journal of Geophysics

基　　金：海南省重点研发项目(ZDYF2021GXJS040);海南省高层次人才项目(2019RC202);国家自然科学基金项目(41864005);海南省生态文明与陆海统筹发展重点实验室专项基金项目;空间天气国家重点实验室专项基金项目;海南省创新专项基金项目(Qhys2021-326)资助。

摘　　要：中层大气温度变化的探测与研究是当前气候变化研究课题的一个组成部分,本文基于海南激光雷达2010—2020年间的长期观测,通过对中层大气Rayleigh散射信号的反演,探讨了海口(19.9°N,110.3°E)上空中层大气(32~64 km)温度变化特性.研究结果显示,中层大气温度呈周期性变化趋势,年、半年、季节变化幅度最大值分别为6.0、3.8、1.7 K,平流层顶位于42~51 km高度,日平均温度最高为~262 K.平流层温度主要表现为年变化趋势,半年和季节变化不明显;平流层顶和低中间层温度变化趋势具有年和半年变化特征,季节变化不明显.在太阳活动性发生明显变化的周期里,平流层顶温度的年际变化趋势对辐射通量F10.7指数变化有较明显的响应;而在太阳活动平静的年份里,温度变化趋势与太阳辐射通量变化的相关性不明显.Study on the temperature variations in the middle atmosphere is one significant part of the current climate change researches.Based on the long-term observations of Hainan lidar(19.9°N,110.3°E)during 2010—2020,temperature variation characteristics in the middle atmosphere(32~64 km)over Haikou are investigated by analyzing the Rayleigh back-scattering data.It is revealed that the temperature varied periodically in the middle atmosphere from 2010 to 2020,and the maximum amplitude of annual,semiannual,and seasonal oscillations were 6.0 K,3.8 K,and 1.7 K,respectively.The stratopause located at the altitude range of 42~51 km with a maximum daily mean temperature of~262 K.Temperature variations were dominated by annual and semiannual oscillations at the stratopause(49 km)and the lower mesosphere(62 km),while it presented only a prominent annual oscillation tendency at the stratosphere(34 km).The seasonal oscillation was very weak in the middle atmosphere when it was compared to the other two oscillation components.Moreover,it is illustrated by the interannual variation analysis that the stratopause temperature variation had a good response to the change of solar activity while the solar radiation flux F10.7 was changing significantly.However,there was not obvious correlation between their variation tendencies during the time period of low solar activity.

关 键 词：海南岛 Rayleigh激光雷达 中层大气温度 太阳辐射通量F10.7 

分 类 号：P407[天文地球—大气科学及气象学]