Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017
Abstract It is well known that the ionospheric electron densities in the F‐region usually undergo day‐to‐day variability with the magnitude of ~20–35%, associated with the solar as well as geomagnetic activities and the meteorological forcing from the lower atmosphere. In this study, we reported rem...
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| Format: | Article |
| Language: | English |
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Wiley
2020-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2020GL088398 |
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| author | Fuqing Huang Jiuhou Lei Ruilong Zhang Na Li Shengyang Gu You Yu Libo Liu Charles Owolabi Baiqi Ning Guozhu Li Jiahao Zhong Tong Dang Dexin Ren Wen Yi Xiaoli Luan Xianghui Xue Tao Yu Faquan Li Xiankang Dou Akimasa Yoshikawa |
| author_facet | Fuqing Huang Jiuhou Lei Ruilong Zhang Na Li Shengyang Gu You Yu Libo Liu Charles Owolabi Baiqi Ning Guozhu Li Jiahao Zhong Tong Dang Dexin Ren Wen Yi Xiaoli Luan Xianghui Xue Tao Yu Faquan Li Xiankang Dou Akimasa Yoshikawa |
| author_sort | Fuqing Huang |
| collection | DOAJ |
| description | Abstract It is well known that the ionospheric electron densities in the F‐region usually undergo day‐to‐day variability with the magnitude of ~20–35%, associated with the solar as well as geomagnetic activities and the meteorological forcing from the lower atmosphere. In this study, we reported remarkable enhancements in the total electron content (TEC) from the Beidou geostationary (GEO) satellites during the quiescent geophysical condition of January 2017 prior to the arrival of the sudden stratosphere warming (SSW). The daytime TEC around the equatorial ionization anomaly region increased by 75–160% and lasted for several days. The equatorial electrojet and Sq current in the ionospheric E‐region at low and middle latitudes showed the corresponding increase during the TEC enhancement interval. The possible contributions from the variations of solar EUV flux and geomagnetic activity are ruled out. Our further analysis showed that the diurnal tides in the temperature from Sounding of the Atmosphere using Broadband Emission Radiometry and the solar and lunar semidiurnal tides of neutral winds from two radars over China became strong during this period of interest. These results suggest that the lower atmospheric tidal forcing could contribute to the great and long‐duration TEC enhancement in the ionosphere even though the SSW had not happened yet. |
| format | Article |
| id | doaj-art-723d52e544d04877b1a4f0f905e9a0ba |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2020-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-723d52e544d04877b1a4f0f905e9a0ba2025-08-20T03:47:41ZengWileyGeophysical Research Letters0094-82761944-80072020-07-014714n/an/a10.1029/2020GL088398Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017Fuqing Huang0Jiuhou Lei1Ruilong Zhang2Na Li3Shengyang Gu4You Yu5Libo Liu6Charles Owolabi7Baiqi Ning8Guozhu Li9Jiahao Zhong10Tong Dang11Dexin Ren12Wen Yi13Xiaoli Luan14Xianghui Xue15Tao Yu16Faquan Li17Xiankang Dou18Akimasa Yoshikawa19CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaElectronic Information School Wuhan University Wuhan ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaPlanetary Environmental and Astrobiological Research Laboratory, School of Atmospheric Sciences Sun Yat‐sen University Zhuhai ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaInstitute of Geophysics and Geomatics China University of Geosciences Wuhan ChinaInnovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan ChinaCAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaDepartment of Earth and Planetary Sciences Kyushu University Fukuoka JapanAbstract It is well known that the ionospheric electron densities in the F‐region usually undergo day‐to‐day variability with the magnitude of ~20–35%, associated with the solar as well as geomagnetic activities and the meteorological forcing from the lower atmosphere. In this study, we reported remarkable enhancements in the total electron content (TEC) from the Beidou geostationary (GEO) satellites during the quiescent geophysical condition of January 2017 prior to the arrival of the sudden stratosphere warming (SSW). The daytime TEC around the equatorial ionization anomaly region increased by 75–160% and lasted for several days. The equatorial electrojet and Sq current in the ionospheric E‐region at low and middle latitudes showed the corresponding increase during the TEC enhancement interval. The possible contributions from the variations of solar EUV flux and geomagnetic activity are ruled out. Our further analysis showed that the diurnal tides in the temperature from Sounding of the Atmosphere using Broadband Emission Radiometry and the solar and lunar semidiurnal tides of neutral winds from two radars over China became strong during this period of interest. These results suggest that the lower atmospheric tidal forcing could contribute to the great and long‐duration TEC enhancement in the ionosphere even though the SSW had not happened yet.https://doi.org/10.1029/2020GL088398ionospheric variationslower atmospheric processesSSWBeidou GEO TECEEJSq current |
| spellingShingle | Fuqing Huang Jiuhou Lei Ruilong Zhang Na Li Shengyang Gu You Yu Libo Liu Charles Owolabi Baiqi Ning Guozhu Li Jiahao Zhong Tong Dang Dexin Ren Wen Yi Xiaoli Luan Xianghui Xue Tao Yu Faquan Li Xiankang Dou Akimasa Yoshikawa Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 Geophysical Research Letters ionospheric variations lower atmospheric processes SSW Beidou GEO TEC EEJ Sq current |
| title | Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 |
| title_full | Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 |
| title_fullStr | Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 |
| title_full_unstemmed | Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 |
| title_short | Prominent Daytime TEC Enhancements Under the Quiescent Condition of January 2017 |
| title_sort | prominent daytime tec enhancements under the quiescent condition of january 2017 |
| topic | ionospheric variations lower atmospheric processes SSW Beidou GEO TEC EEJ Sq current |
| url | https://doi.org/10.1029/2020GL088398 |
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