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Influences of non-isothermal atmospheric backgrounds on variations of gravity wave parameters

Science China(Technological Sciences) 2012年第5期55卷 1251-1257页

作者： LIU Xiao zhou qihou YUAN Wei XU JiYao State Key Laboratory of Space Weather Center for Space Science and Applied ResearchChinese Academy of Sciences Beijing 100190China College of Mathematics and Information Science Henan Normal UniversityXinxiang 453007China School of Electrical Engineering Zhengzhou UniversityZhengzhou 450001China Electrical and Computer Engineering Department Miami UniversityOxfordOhioUSA

Because of the importance of gravity waves （GWs） in coupling different atmospheric regions, further studies are necessary to investigate the characteristics of GW propagation in a non-isothermal atmosphere. Using a nonlinear numerical model, we simulate the propagation of small amplitude GWs with various wavelengths in different non-isothermal atmospheres. Our re- sults show that the GW vertical wavelength undergoes sharp changes above the stratopause and mesopause region. Specifically for a GW with an initial vertical wavelength of 5 km, the seasonal background temperature structure difference at 50° latitude can cause the vertical wavelength to vary by -2 krn in the mesosphere and by as large as -4.5 km in the lower thermosphere. In addition, the GW paths exhibit great divergence in the height range of -65-110 kin. Our results also show that the variations of GW path, vertical wavelength and horizontal phase velocity are not synchronized in a non-isothermal atmosphere as in an isothermal atmosphere. Despite the fact that all GWs change their characteristics as they propagate upward in a non-isothermal atmosphere, the variations relative to the initial parameters at a reference height are similar for different initial vertical wavelengths. Our results indicate that the changing characteristics of a gravity wave in a non-isothermal atmosphere need to be considered when investigating the relationship of GWs at two different heights.

关键词： gravity wave non-isothermal atmosphere atmospheric coupling

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Comparison of stratospheric evolution during the major sudden stratospheric warming events in 2018 and 2019

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Earth and Planetary Physics 2020年第5期4卷 493-503页

作者： Zheng Ma Yun Gong ShaoDong Zhang JiaHui Luo qihou zhou ChunMing Huang KaiMing Huang School of Electronic Information Wuhan UniversityWuhan 430072China State Key Laboratory of Space Weather Chinese Academy of SciencesBeijing 100190China Key Laboratory of Geospace Environment and Geodesy Ministry of EducationWuhan 430079China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Electrical and Computer Engineering Department Miami UniversityOxfordOhio 45056USA

Using Modern-Era Retrospective analysis for Research and Applications,Version 2(MERRA-2)data in the northern hemisphere at the 10 hPa level,we compared the stratospheric evolution of temperature and geopotential height during two major sudden stratosphere warming events(SSWs)that occurred in the Arctic winter of 2018 and *** the prewarming period,poleward temperature-enhanced regions were mainly located around 120°E with a displaced vortex and around 120°E and 60°W with splitting *** evolution of geopotential height indicated that these temperature-enhanced regions were both on the western side of high-latitude *** the postwarming period,the polar vortex turned from splitting to displacement in the 2018 SSW but from displacement to splitting in the 2019 *** transitions were observed over the Atlantic region,which may have been caused by anticyclones moving through the polar *** findings revealed that the evolution of the anticyclone is important during SSWs and is closely related to temperature-enhanced regions in the prewarming periods and to transitions of the polar vortices in postwarming periods.

关键词： sudden stratosphere warming transitions of the polar vortex anticyclone Atlantic region

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Characteristics of the quasi-16-day wave in the mesosphere and lower thermosphere region as revealed by meteor radar,Aura satellite,and MERRA2 reanalysis data from 2008 to 2017

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Earth and Planetary Physics 2020年第3期4卷 274-284页

作者： Yun Gong Zheng Ma Chun Li XieDong Lv ShaoDong Zhang qihou zhou ChunMing Huang KaiMing Huang You Yu GuoZhu Li School of Electronic Information Wuhan UniversityWuhan 430079China Key Laboratory of Geospace Environment and Geodesy Ministry of EducationWuhan 430079China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Electrical and Computer Engineering Department Miami UniversityOxfordOhioUSA Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

This study presents an analysis of the quasi-16-day wave(Q16DW)at three stations in the middle latitudes by using a meteor radar chain in conjunction with Aura Microwave Limb Sounder temperature data and MERRA2(Modern-Era Retrospective Analysis for Research and Applications,Version 2)reanalysis data from 2008 to *** radar chain consists of three meteor radar stations located at Mohe(MH,53.5°N,122.3°E),Beijing(BJ,40.3°N,116.2°E),and Wuhan(WH,30.5°N,114.6°E).The Q16DW wave exhibits similar seasonal variation in the neutral wind and temperature,and the Q16DW amplitude is generally strong during winter and weak around *** Q16DW at BJ was found to have secondary enhancement around September in the zonal wind,which is rarely reported at similar *** latitudinal variations of the Q16DW in the neutral wind and temperature are quite *** Q16DW at BJ is the most prominent in both neutral wind components among the three stations and the Q16DW amplitudes at MH and WH are comparable,whereas the wave amplitude in temperature decreases with decreasing *** quasi-geostrophic refractive index squared at the three stations in the period from 2008 to 2017 was *** results indicate that the Q16DW in the mesosphere and lower thermosphere(MLT)at MH has a limited contribution from the lower *** March and October,the Q16DW in the troposphere at BJ can propagate upward into the MLT region,whereas at WH,the contribution to the Q16DW in the MLT region is largely from the mesosphere.

关键词： quasi-16-day waves seasonal variations meteor radar winds Aura MLS temperature generation mechanisms

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陆费逵与中华书局史实辨析

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首都师范大学学报（社会科学版） 2010年第3期 131-136页

作者：周其厚桂林旅游高等专科学校南京大学历史系

陆费逵等人于1912年在上海创办中华书局,成为民国时期著名的出版机构。但长期以来,有的学者对陆费逵的早期活动、创办中华书局的动机,以及中华书局的经营状况,有着诸多的不实之辞。因此,有必要以求真的态度,将这段被误解的史实予以辨析。

关键词：陆费逵中华书局辨析

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The F-region and topside ionosphere response to a strong geomagnetic storm at Arecibo

The F-region and topside ionosphere response to a strong geo...

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中国空间科学学会空间物理学专业委员会第十五届全国日地空...

作者： Yun Gong qihou zhou Shaodong Zhang Nestor Aponte Michael Sulzer Sixto Gonzalez Electrical and Computer Engineering Department Miami University State Key Laboratory of Space Weather Chinese Academy of Sciences School of Electronic Information Wuhan University School of Electrical Engineering Zhengzhou University Arecibo Observatory AreciboPuerto RicoUSA

We analyze the data derived from the Arecibo incoherent scatter radar to investigate the response of the F-region and topside ionosphere to a strong geomagnetic storm that occurred during the period of August 5-6,*** wind is extremely enhanced at early stage of the *** peak velocity reaches approximately 300 m/s at an altitude of 340 km,which is seldom seen at Arecibo *** the storm,large variation of strong meridional wind and electric field controlled and enhanced the vertical ion *** disturbed vertical ion drifts result in large ionospheric perturbations in the F and topside *** collapses have been observed in HmF2 during the storm ***2 rapidly increased after the storm and then dramatically decreased around *** 610 km,the ratio of H+over electron density exhibit increasingly large variation during the course of a night for similar change in vertical ion *** explanation for such a behavior is that vertical transport dominates over charge exchange later at night due to the lower concentration in O+.

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青岛城市开发区文化旅游资源的现状与对策

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北京城市学院学报 2006年第1期 21-26页

作者：周其厚山东科技大学文法学院山东青岛266510

本文对青岛市旅游开发区的文化旅游资源做了系统的研究,特别是对青岛的自然资源环境作了具体的分析,并地提出了建议,对于青岛市旅游事业的发展规划都有重要启示。

关键词：青岛资源旅游

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桂林古村落旅游形象论略

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桂林师范高等专科学校学报 2017年第4期31卷 1-4页

作者：周其厚桂林旅游学院校企合作处广西桂林541006

桂林古村落旅游资源丰富,特色鲜明,但在旅游形象策划方面,尚存在着一些亟待解决的问题。因此,需要我们立足区域性、民族性,整体把握与个性特征相结合,采取统筹协调、塑造品牌、开发创意性旅游产品等策略。

关键词：桂林古村落旅游形象

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关于高职旅游院校科研问题的几点思考

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旅游论坛 2012年第6期5卷 119-122页

作者：周其厚桂林旅游高等专科学校教务处广西桂林541006

中国高职旅游院校是改革开放的产物,担负着为社会和行业培养旅游人才的重任。正确认识并找准旅游研究的切入点,下一番扎实的坐冷板凳的功夫,发扬实事求是的学术精神,对高职旅游院校发展具有重要意义。

关键词：高职旅游院校科研问题思考

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古村落家风传承与当代价值转化——以桂林古村落为例

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桂林师范高等专科学校学报 2019年第6期33卷 1-5页

作者：周其厚桂林旅游学院文化与传播学院

古村落一般由一个家庭继而一个家族聚而生成,实行族长制,运用家谱、家训、家教等手段,教化子孙后代,崇贤尚德,仁义礼爱,由此演成独具特色、内涵丰富的家风。在稳定村落秩序、净化社会风气等方面,起到了不可忽视的作用。作为民族文化构... 详细信息

古村落一般由一个家庭继而一个家族聚而生成,实行族长制,运用家谱、家训、家教等手段,教化子孙后代,崇贤尚德,仁义礼爱,由此演成独具特色、内涵丰富的家风。在稳定村落秩序、净化社会风气等方面,起到了不可忽视的作用。作为民族文化构成的一部分,古村落家风资源在深入挖掘的基础上,经过创造性转化,对于今天的家庭来说,以之为鉴,建成良好家风,享受幸福生活,亦具有重要意义。

关键词：古村落家风当代价值

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乡村旅游国内外研究进展的文献计量化与知识图谱化分析

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泰山学院学报 2019年第3期41卷 53-63页

作者：熊敬锘周其厚桂林旅游学院广西桂林5410061 复旦大学旅游学系上海200433

以1992-2018年中国知网数据库及Web of Science收录的乡村旅游研究学术性研究文献作为研究样本,采用多视角计量分析和可视化展示的方法,运用社会网络分析工具软件UCINET,绘制国内外乡村旅游研究的知识图谱,对国内外高频关键词、研究热... 详细信息

以1992-2018年中国知网数据库及Web of Science收录的乡村旅游研究学术性研究文献作为研究样本,采用多视角计量分析和可视化展示的方法,运用社会网络分析工具软件UCINET,绘制国内外乡村旅游研究的知识图谱,对国内外高频关键词、研究热点主题进行聚类分析,揭示了国内外乡村旅游研究领域热点研究主题的异同。同时也对国内外乡村旅游研究内容进行了梳理总结,通过对比分析国内外乡村旅游研究的发展趋势、热点主题和研究内容,以期借鉴国外研究方法和成果,为我国乡村旅游发展提供理论依据和决策参考。

关键词：乡村旅游研究进展文献计量知识图谱对比分析

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