Chin. Phys. Lett.  2018, Vol. 35 Issue (10): 109401    DOI: 10.1088/0256-307X/35/10/109401
 GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
Global Statistical Study of Ionospheric Waves Based on COSMIC GPS Radio Occultation Data
Xuan-Yun Zeng1,2, Xiang-Hui Xue1**, Xin-An Yue3,4, Ming-Jiao Jia1, Bing-Kun Yu1, Jian-Fei Wu1, Chao Yu1
1CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026
2The Open University of Guangdong, Guangzhou 510091
3Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
4College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049
Xuan-Yun Zeng, Xiang-Hui Xue, Xin-An Yue et al  2018 Chin. Phys. Lett. 35 109401
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Abstract Extracting and parameterizing ionospheric waves globally and statistically is a longstanding problem. Based on the multichannel maximum entropy method (MMEM) used for studying ionospheric waves by previous work, we calculate the parameters of ionospheric waves by applying the MMEM to numerously temporally approximate and spatially close global-positioning-system radio occultation total electron content profile triples provided by the unique clustered satellites flight between years 2006 and 2007 right after the constellation observing system for meteorology, ionosphere, and climate (COSMIC) mission launch. The results show that the amplitude of ionospheric waves increases at the low and high latitudes ($\sim$0.15 TECU) and decreases in the mid-latitudes ($\sim$0.05 TECU). The vertical wavelength of the ionospheric waves increases in the mid-latitudes (e.g., $\sim$50 km at altitudes of 200–250 km) and decreases at the low and high latitudes (e.g., $\sim$35 km at altitudes of 200–250 km). The horizontal wavelength shows a similar result (e.g., $\sim$1400 km in the mid-latitudes and $\sim$800 km at the low and high latitudes).
Received: 17 May 2018      Published: 15 September 2018
 PACS: 94.20.-y (Physics of the ionosphere) 94.20.Vv (Ionospheric disturbances, irregularities, and storms) 94.20.W- (Ionospheric dynamics and interactions)
Fund: Supported by the National Natural Science Foundation of China under Grant Nos 41774158, 41474129 and 41704148, the Chinese Meridian Project, and the Youth Innovation Promotion Association of the Chinese Academy of Sciences under Grant No 2011324.
 TRENDMD: URL: http://cpl.iphy.ac.cn/10.1088/0256-307X/35/10/109401       OR      http://cpl.iphy.ac.cn/Y2018/V35/I10/109401
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