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  2. 地质与地球物理研究所
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Seasonal Variation of O/N-2 on Different Pressure Levels From GUVI Limb Measurements

文献类型：期刊论文

作者Yu, Tingting3,4,5,6; Ren, Zhipeng3,4,5,6; Le, Huijun3,4,5,6; Wan, Weixing3,4,5,6; Wang, Wenbin7; Cai, Xuguang7; Li, Xing1,2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2020-08-01
卷号125期号:8页码:13
关键词O-N-2 volume density ratio seasonal variations GUVI limb measurement empirical model thermosphere Fourier expansion
ISSN号2169-9380
DOI10.1029/2020JA027844
英文摘要The ratio of O number density to N-2 number density (O/N-2) is an important parameter to describe thermospheric composition changes and its effects on the ionosphere. Based on Global Ultraviolet Imager (GUVI) limb measurements, we investigate the seasonal behaviors of O/N-2 volume density ratio on different constant pressure levels during geomagnetically quiet periods. The global O/N-2 shows the prominent annual and semiannual variations with solar activity dependence. An empirical model considering the solar activity and annual/semiannual variations can reasonably reproduce the original O/N-2. The modeled O/N-2 captures the hemispheric asymmetry of the annual variations in both length and magnitude. Global maps of the seasonal harmonic components of the modeled O/N-2 indicate the latitudinal and altitudinal dependence of O/N-2 seasonal variations. The annual component dominates over the semiannual component at mid-latitudes, but it is smaller than the semiannual component at low latitudes. In the Northern Hemisphere, and at low geomagnetic latitudes of the Southern Hemisphere, the annual component peaks around December solstice at all altitudes, whereas at middle geomagnetic latitudes of the Southern Hemisphere, it peaks around June solstice. The semiannual component peaks at the equinoxes in almost all regions over the globe at all altitudes. The annual and semiannual amplitudes both increase with altitude. In addition, O/N-2 annual variations and solar activity dependence are more influenced by the thermal expansion and contraction.
WOS关键词DOPPLER-SPREAD PARAMETERIZATION ; VERTICAL EDDY DIFFUSIVITY ; PEAK ELECTRON-DENSITY ; LARGE-SCALE DYNAMICS ; SEMIANNUAL VARIATION ; LOWER THERMOSPHERE ; GRAVITY-WAVES ; UPPER-ATMOSPHERE ; SOLAR EUV ; F-LAYER
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010201] ; National Science Foundation of China[41674158] ; National Science Foundation of China[41874179] ; National Science Foundation of China[41427901] ; National Science Foundation of China[41774165] ; National Science Foundation of China[41822403] ; Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000577125000045
出版者AMER GEOPHYSICAL UNION
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/98308]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Ren, Zhipeng
作者单位1.Minist Ind & Informat Technol, Key Lab Space Environm Monitoring & Informat Proc, Beijing, Peoples R China
2.Beihang Univ, Sch Space & Environm, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
7.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
推荐引用方式
GB/T 7714		 Yu, Tingting,Ren, Zhipeng,Le, Huijun,et al. Seasonal Variation of O/N-2 on Different Pressure Levels From GUVI Limb Measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(8):13.
APA Yu, Tingting.,Ren, Zhipeng.,Le, Huijun.,Wan, Weixing.,Wang, Wenbin.,...&Li, Xing.(2020).Seasonal Variation of O/N-2 on Different Pressure Levels From GUVI Limb Measurements.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(8),13.
MLA Yu, Tingting,et al."Seasonal Variation of O/N-2 on Different Pressure Levels From GUVI Limb Measurements".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.8(2020):13.

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来源：地质与地球物理研究所

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