The First Concurrent Observations of Thermospheric Na Layers From Two Nearby Central Midlatitude Lidar Stations

Xun Yuchang; Yang Guotao; She Chiao‐Yao; Wang Jihong; Du Lifang; Yan Zhaoai; Yang Yong; Cheng Xuewu; Li Faquan

摘要

Abstract > In 2011, Chu et al. reported the observation of neutral Fe layers reaching 155?km. Since then, there are five additional reports of layers extending above 130?km to as high as 170?km, none from central middle latitudes (35°–55°), a large atmospheric region of considerable importance. Here we report the first concurrent observations of thermospheric Na layers from two nearby lidar stations so located, Yanqing (40.5°N, 116.0°E) and Pingquan (41.0°N, 118.7°E). From one‐year data set, we found four such layers, including an unprecedented one reaching 200?km with highest density of 35?cm ?3 and fastest descending rate. While the main Na layers were comparable, in three nights, these thermospheric layers were observed only in one station (Yanqing), suggesting that these layers often occur locally with a horizontal scale less than ~250?km. We tabulate, compare, and discuss the principle characteristics of all the reported thermospheric layers. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><abstract type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> > 2011年，Chu等人。报道了达到155 km的中性Fe层的观察。从那时起，有五个关于在130 km以上延伸到170 km的层数，从中央中部纬度（35°-55°），没有大型大气区的重要性。在这里，我们报告了来自两个附近的LIDAR站的热散疱疹的第一次并发观察，延庆（40.5°N，116.0°E）和平泉（41.0°N，118.7°E）。从一年的数据集中，我们发现了四个这样的层，包括前所未有的一个达到200 km，最高密度为35？cm ？3 </ sup>和最快的下降率。虽然主要NA层相当，但在三个夜晚，只在一个站（延时）中观察到这些热镜层，这表明这些层通常在局部发生，水平刻度小于〜250 km。我们制表，比较，并讨论所有报告的热镜层的原理特征。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2019年第4期</span><b style="margin: 0 2px;">|</b><span>共8页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xun Yuchang&option=202" target="_blank" rel="nofollow">Xun Yuchang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang Guotao&option=202" target="_blank" rel="nofollow">Yang Guotao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=She Chiao‐Yao&option=202" target="_blank" rel="nofollow">She Chiao‐Yao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wang Jihong&option=202" target="_blank" rel="nofollow">Wang Jihong;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Du Lifang&option=202" target="_blank" rel="nofollow">Du Lifang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yan Zhaoai&option=202" target="_blank" rel="nofollow">Yan Zhaoai;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang Yong&option=202" target="_blank" rel="nofollow">Yang Yong;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Cheng Xuewu&option=202" target="_blank" rel="nofollow">Cheng Xuewu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Faquan&option=202" target="_blank" rel="nofollow">Li Faquan;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing China;</p> <p>State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing China;</p> <p>Department of PhysicsColorado State UniversityFort Collins Colorado USA;</p> <p>State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing China;</p> <p>State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing China;</p> <p>University of Chinese Academy of SciencesBeijing China;</p> <p>Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan China;</p> <p>Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan China;</p> <p>Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=thermospheric Na layers&option=203" rel="nofollow">thermospheric Na layers;</a> </p> <div class="translation"> 机译：热散/纳层; 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