Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020
The intraseasonal oscillations (30–100 days, ISO) in the MLT (mesosphere and lower thermosphere) horizontal wind are investigated based on observations from the Mengcheng meteor radar. There is a clear seasonal variation in ISO in the horizontal wind at 80 km, which is strongest during the winter an...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/6/1034 |
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| author | Yihuan Tang Xiaojing Hao Shican Qiu Wenhan Cheng Chengyun Yang Jianfei Wu |
| author_facet | Yihuan Tang Xiaojing Hao Shican Qiu Wenhan Cheng Chengyun Yang Jianfei Wu |
| author_sort | Yihuan Tang |
| collection | DOAJ |
| description | The intraseasonal oscillations (30–100 days, ISO) in the MLT (mesosphere and lower thermosphere) horizontal wind are investigated based on observations from the Mengcheng meteor radar. There is a clear seasonal variation in ISO in the horizontal wind at 80 km, which is strongest during the winter and weakest during the summer. At 100 km, ISO occurs throughout most of the year except winter, and there are significant differences in periods and amplitudes from year to year. From 2015 to 2016, ISOs with periods of 40–60 days were present in the 100 km horizontal wind, whereas none were simultaneously observed in the 80 km horizontal wind. Cross wavelets were used to study the relationship between ISO in the MLT region and ISO in the lower atmosphere. Some of the ISO activity is linked to tropospheric tropical convective activity, but the ISO connections with that in tropospheric convection are not consistent in the upper mesosphere and in the lower thermosphere. |
| first_indexed | 2024-03-11T02:47:16Z |
| format | Article |
| id | doaj.art-e50b2d3a93f0444181a914193a630ef2 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-11T02:47:16Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-e50b2d3a93f0444181a914193a630ef22023-11-18T09:15:17ZengMDPI AGAtmosphere2073-44332023-06-01146103410.3390/atmos14061034Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020Yihuan Tang0Xiaojing Hao1Shican Qiu2Wenhan Cheng3Chengyun Yang4Jianfei Wu5Institute of Deep Space Sciences, Deep Space Exploration Laboratory, Hefei 230026, ChinaNational Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, ChinaDepartment of Geophysics, College of the Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, ChinaCollege of Resources and Environment, Anhui Agricultural University, Hefei 230036, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaThe intraseasonal oscillations (30–100 days, ISO) in the MLT (mesosphere and lower thermosphere) horizontal wind are investigated based on observations from the Mengcheng meteor radar. There is a clear seasonal variation in ISO in the horizontal wind at 80 km, which is strongest during the winter and weakest during the summer. At 100 km, ISO occurs throughout most of the year except winter, and there are significant differences in periods and amplitudes from year to year. From 2015 to 2016, ISOs with periods of 40–60 days were present in the 100 km horizontal wind, whereas none were simultaneously observed in the 80 km horizontal wind. Cross wavelets were used to study the relationship between ISO in the MLT region and ISO in the lower atmosphere. Some of the ISO activity is linked to tropospheric tropical convective activity, but the ISO connections with that in tropospheric convection are not consistent in the upper mesosphere and in the lower thermosphere.https://www.mdpi.com/2073-4433/14/6/1034intraseasonal oscillationmesosphere and lower thermospheremeteor radar observation |
| spellingShingle | Yihuan Tang Xiaojing Hao Shican Qiu Wenhan Cheng Chengyun Yang Jianfei Wu Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 Atmosphere intraseasonal oscillation mesosphere and lower thermosphere meteor radar observation |
| title | Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 |
| title_full | Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 |
| title_fullStr | Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 |
| title_full_unstemmed | Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 |
| title_short | Intraseasonal Variation in the Mesosphere Observed by the Mengcheng Meteor Radar from 2015 to 2020 |
| title_sort | intraseasonal variation in the mesosphere observed by the mengcheng meteor radar from 2015 to 2020 |
| topic | intraseasonal oscillation mesosphere and lower thermosphere meteor radar observation |
| url | https://www.mdpi.com/2073-4433/14/6/1034 |
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