| First report of sporadic K layers and comparison with sporadic Na layers at Beijing, China (40.6 degrees N, 116.2 degrees E) | |
| Jiao, Jing; Yang, Guotao; Wang, Jihong; Cheng, Xuewu; Li, Faquan; Yang, Yong; Gong, Wei; Wang, Zelong; Du, Lifang; Yan, Chunxiao; Gong, Shunsheng; Yang, GT (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China. | |
| Department | 空间科学部 |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 2015 | |
| Volume | 120Issue:6Pages:5214-5225 |
| ISSN | 2169-9380 |
| Language | 英语 |
| Keyword | Sporadic k Layer Sporadic Na Layer Lidar Observation |
| Abstract | A double-laser beam lidar was successfully developed to simultaneously measure K and Na layers at Beijing (40.6 degrees N, 116.2 degrees E) in 2010. Statistical analysis of the parameters of sporadic K (K-s) and sporadic Na (Nas) layers was performed over 2years of lidar data, and different characteristics of them were found. The average K-s occurrence (2.9%) was lower than that of Nas (5.9%); the Nas occurrence had a maximum (19.3%) in May-June months and a minimum (1.6%) in January-February months, while the K-s occurrence had a maximum (4.9%) in January-February months and a minimum (1.0%) in September-October months; most K-s peaks tended to occur around 93km, which was similar to 2km lower than that of Nas (similar to 95km); the K-s peak density was often at least 1 order of magnitude lower than that of Nas; notably, two K-s with high peak densities (>1000cm(-3)) were observed, which were much higher than K density (15-300cm(-3)) reported before. The ascending time of K-s was often longer than its descending time, but an opposite trend occurred for Nas. During the 152 cases of joint observation for the K and Na layers, 21% (32/152) were cases in which K-s and Nas events simultaneously occurred, while 79% (120/152) were cases in which only one layer (K or Na) exhibited a strong K-s or Nas. |
| Indexed By | SCI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/4581 |
| Collection | 空间科学部 |
| Corresponding Author | Yang, GT (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China. |
| Recommended Citation GB/T 7714 | Jiao, Jing,Yang, Guotao,Wang, Jihong,et al. First report of sporadic K layers and comparison with sporadic Na layers at Beijing, China (40.6 degrees N, 116.2 degrees E)[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(6):5214-5225. |
| APA | Jiao, Jing.,Yang, Guotao.,Wang, Jihong.,Cheng, Xuewu.,Li, Faquan.,...&Yang, GT .(2015).First report of sporadic K layers and comparison with sporadic Na layers at Beijing, China (40.6 degrees N, 116.2 degrees E).JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(6),5214-5225. |
| MLA | Jiao, Jing,et al."First report of sporadic K layers and comparison with sporadic Na layers at Beijing, China (40.6 degrees N, 116.2 degrees E)".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.6(2015):5214-5225. |
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