An empirical model of the occurrence of an additional layer in the ionosphere from the occultation technique: Preliminary results

doi:10.1002/2014JA020220

	An empirical model of the occurrence of an additional layer in the ionosphere from the occultation technique: Preliminary results
	Zhao, Biqiang 1,2; Zhu, J.1,2,3; Xiong, B.1,2; Yue, X.4; Zhang, M.1,2; Wang, M.5; Wan, W.1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2014-12-01
卷号	119 期号:12
ISSN号	2169-9380
DOI	10.1002/2014JA020220
文献子类	Article
英文摘要	About 8 year electron density profile (EDP) data from the COSMIC/FORMOSAT-3 satellites radio occultation technique were used to investigate the additional stratification of the F2 (the so-called F3 layer) layer over the equatorial and low-latitude ionosphere on a global scale for both the bottomside and topside ionosphere. The F3 layer was recognized through the altitude differential profile featured by two maxima existing from the selected EDP profile. There were similar to 37,000 (bottomside) and 25,000 (topside) cases of F3 layer selected out of similar to 1.27million occultation events at equatorial and low-latitude areas during the period of April 2006 to August 2014. The statistical results for the bottomside ionosphere resemble that reported in Zhao et al. (2011a), while in the topside the highest occurrence of F3 layer shows a 3-4 h delay depending on the altitude range of the stratification. The magnetic latitude distribution shows different dependence with a tendency to form a single crest toward high altitude. Also, the seasonal variation is weaker in the topside ionosphere compared to the bottomside one, especially in the high altitude. Then we build up an empirical model of the F3 layer occurrence using the bottomside statistics based on empirical orthogonal function (EOF) decomposition as it gets the inherent characters inside the data set and converges quickly. The model well grasps the main features of the F3 occurrence, e.g., the F3 occurrence's sensitivity on the magnetic latitude. Further, in order to accommodate the ground observation a corrected factor was introduced. As F3 layer is an important phenomenon in the low-latitude ionosphere, we have made an attempt to describe its feature with a consecutive function although future work needs to be done for an overall expression of this structure.
WOS关键词	EQUATORIAL PLASMA FOUNTAIN ; F3 LAYER ; IONIZATION LEDGE ; TOPSIDE IONOSPHERE ; EOF ANALYSIS ; FORTALEZA ; F3-LAYER ; DENSITY ; REGION ; BRAZIL
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000349161100061
资助机构	National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; 41131066 ; 41131066 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; 41304126) ; 41304126) ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; 41131066 ; 41131066 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; 41304126) ; 41304126) ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; 41131066 ; 41131066 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; 41304126) ; 41304126) ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Natural Science Foundation of China(41174138 ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Important Basic Research Project of China(2011CB811405) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; National Science Foundation(AGS-1033112) ; 41131066 ; 41131066 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; 41304126) ; 41304126)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85117]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, Biqiang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Univ Corp Atmospher Res, COSMIC Program Off, Boulder, CO USA 5.China Earthquake Adm, Inst Earthquake Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Biqiang,Zhu, J.,Xiong, B.,et al. An empirical model of the occurrence of an additional layer in the ionosphere from the occultation technique: Preliminary results[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(12).
APA	Zhao, Biqiang.,Zhu, J..,Xiong, B..,Yue, X..,Zhang, M..,...&Wan, W..(2014).An empirical model of the occurrence of an additional layer in the ionosphere from the occultation technique: Preliminary results.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(12).
MLA	Zhao, Biqiang,et al."An empirical model of the occurrence of an additional layer in the ionosphere from the occultation technique: Preliminary results".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.12(2014).