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| 武汉突发E层的季节变化及其与中层风的关系 | |
| 引用本文： | 朱品洁, 滕陈轲敏, 谷升阳, 窦贤康, 李国主, 解海永. 武汉突发E层的季节变化及其与中层风的关系[J]. 空间科学学报, 2022, 42(3): 376-382. doi: 10.11728/cjss2022.03.210406043 |
| 作者姓名： | 朱品洁 滕陈轲敏 谷升阳 窦贤康 李国主 解海永 |
| 作者单位： | 1.武汉大学电子信息学院 武汉 430072;;2.中国科学院地质与地球物理研究所 北京 100029 |
| 基金项目： | 国家自然科学基金项目资助（41874181,41831071）； |
| 摘 要： |  通过对2018年武汉站（114.61°E，30.53°N）数字测高仪记录的数据统计分析，研究武汉地区突发E层的特征。研究发现：2018年武汉地区电离层突发E层的临界频率在夏季最高，在冬季有一个次增强现象，在春秋季较低；在正午前最大，在日落后出现小幅度提升，在日出前最低。利用指定动态全球大气气候扩展模型SD-WACCM-X模拟出2018年武汉上空90～140 km高度的平均风场，探讨突发E层与背景风之间的关系，揭示突发E层的形成机制。结果表明，半日潮汐分量可能诱导突发E层临界频率的半日变化，周日潮汐分量诱导突发E层临界频率的周日变化；突发E层的强度可能与纬向风场120 km高度处的风剪切有关。 |
| 关 键 词： | 突发E层 大气风场 季节变化 风剪切 周日潮汐 半日潮汐 |
| 收稿时间： | 2021-04-04 |
| 修稿时间： | 2022-02-12 |
Seasonal Variation of the Sporadic E Layer over Wuhan and Its Dependence with Mesospheric Wind |
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| ZHU Pinjie, TENG Chenkemin, GU Shengyang, DOU Xiankang, LI Guozhu, XIE Haiyong. Seasonal Variation of the Sporadic E Layer over Wuhan and Its Dependence with Mesospheric Wind (in Chinese). Chinese Journal of Space Science, 2022, 42(3): 376-382. DOI: 10.11728/cjss2022.03.210406043 | |
| Authors: | ZHU Pinjie TENG Chenkemin GU Shengyang DOU Xiankang LI Guozhu XIE Haiyong |
| Affiliation: | 1. School of Electronic Information, Wuhan University, Wuhan 430072;;2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | Based on the statistical analysis of the dataset recorded by ionosonde at Wuhan station (114.61°E, 30.53°N) in 2018, characteristics of sporadic E layer over Wuhan area are studied. It is found that the critical frequency of sporadic E layer was the highest in summer, a secondary enhancement in winter, and it was very low in spring and autumn; and it was highest around noon, a secondary enhancement at sunset and the lowest before sunrise. Using the specified dynamics Whole Atmosphere Community Climate Model-extended (SD-WACCM-X) to simulate the average wind field over Wuhan at a height of 90～140 km in 2018, to reveal the formation mechanism of sporadic E layer. The results show that the semi-diurnal tidal component may induce a semi-diurnal change in the critical frequency of the sporadic E layer, and the diurnal tidal component induces a diurnal change in the critical frequency of the sporadic E layer. It is also found that the intensity of the sporadic E layer may be related to the wind shear at a height of 120 km in the zonal wind field. |
| Keywords: | Sporadic E layer Mesospheric wind Seasonal variation Wind shear Diurnal tide Semi-diurnal tide |
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