DOI: 10.1002/2017JA024675
Scopus记录号: 2-s2.0-85041326835
论文题名: Ionospheric Trend Over Wuhan During 1947–2017: Comparison Between Simulation and Observation
作者: Yue X. ; Hu L. ; Wei Y. ; Wan W. ; Ning B.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 2 起始页码: 1396
结束页码: 1409
语种: 英语
英文关键词: CO2
; geomagnetic field
; ionosphere
; TIEGCM
; trend
英文摘要: Since Roble and Dickinson (1989), who drew the community's attention about the greenhouse gas effect on the ionosphere, huge efforts have been implemented on ionospheric climate study. However, direct comparison between observations and simulations is still rare. Recently, the Wuhan ionosonde observations were digitized and standardized through unified method back to 1947. In this study, the NCAR-TIEGCM was driven by Mauna Loa Observatory observed CO2 level and International Geomagnetic Reference Field (IGRF) geomagnetic field to simulate their effects on ionospheric long-term trend over Wuhan. Only March equinox was considered in both data analysis and simulation. Simulation results show that the CO2 and geomagnetic field have comparable effect on hmF2 trend, while geomagnetic field effect is stronger than CO2 on foF2 trend over Wuhan. Both factors result in obvious but different diurnal variations of foF2/hmF2 long-term trends. The geomagnetic field effect is nonlinear versus years since the long-term variation of geomagnetic field intensity and orientation is complex. Mean value of foF2 and hmF2 trend is (−0.0021 MHz/yr, −0.106 km/yr) and (−0.0022 MHz/yr, −0.0763 km/yr) for observation and simulation, respectively. Regarding the diurnal variation of the trend, the simulation accords well with that of observation except hmF2 results around 12 UT. Overall, good agreement between observation and simulation illustrates the good quality of Wuhan ionosonde long-term data and the validity of ancient ionosphere reconstruction based on realistic indices driving simulation. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114633
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; Institutions of Earth Science, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Yue X.,Hu L.,Wei Y.,et al. Ionospheric Trend Over Wuhan During 1947–2017: Comparison Between Simulation and Observation[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(2)