Assessment of spatial and temporal TEC variations derived from ionospheric models over the polar regions
文献类型：期刊论文
| 作者 | Jiang, Hu3; Liu, Jingbin1,6,7,8; Wang, Zemin3,4; An, Jiachun3,9; Ou, Jikun5; Liu, Shulun3; Wang, Ningbo2 |
| 刊名 | JOURNAL OF GEODESY
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 93期号:4页码:455-471 |
| ISSN号 | 0949-7714 |
| 关键词 | Polar ionosphere Ionospheric model Total electron content (TEC) GPS COSMIC and JASON TEC Weddell Sea Anomaly (WSA) Ionospheric storm |
| DOI | 10.1007/s00190-018-1175-6 |
| 英文摘要 | A comprehensive evaluation of Global Positioning System (GPS) Klobuchar, Galileo broadcast NeQuick2, international reference ionosphere (IRI) and global ionospheric map (GIM) models in estimating ionospheric total electron content (TEC) is performed using GPS-derived, constellation observing system for meteorology, ionosphere, and climate and JASON-2 TECs under various solar conditions in the Arctic and Antarctic. The performances of the four ionospheric models are first analysed for the overall polar regions. In addition, according to the temporal and spatial characteristics of the polar regions, the accuracies of the four models are evaluated for the polar days and nights, the Antarctic ice sheet (AIS) and the Arctic Ocean (AO), the Weddell Sea Anomaly (WSA) as well as for ionospheric storm. The results show that Klobuchar, NeQuick2, IRI2016 and GIM can mitigate the ionospheric delay by 28.69-29.41%, 44.57-56.09%, 43.38-55.99% and 67.17-77.56%, respectively. The performances of the four models during the polar days are obviously worse than those during the polar nights. In the AIS and AO, the Galileo broadcast NeQuick outperforms the GPS broadcast Klobuchar, and the root-mean-square error of IRI2016 performs almost the same as NeQuick2, but IRI2016 has a greater deviation. In addition, the GIM model can only mitigate the ionospheric delay by 46.81-56.72%, which is lower than other regions due to the lack of GPS ground station observations. Under the WSA conditions, the four models underestimate the real TEC to varying degrees, and the night-time deviations of the Klobuchar, NeQuick2 and IRI2016 models are significantly greater than the daytime deviations. The relative accuracy of four ionospheric models is lower during the ionospheric storm period than that in the ionospheric quiet period, especially the NeQuick2 and IRI2016 over the Antarctic. |
| 资助项目 | Natural Science Funds of China[41776195] ; Natural Science Funds of China[41231064] ; Natural Science Funds of China[41531069] ; Natural Science Funds of China[41574015] ; National Key Research Development Program of China[2016YFE0202300] |
| WOS研究方向 | Geochemistry & Geophysics ; Remote Sensing |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000461785800001 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/7623]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Wang, Zemin |
| 作者单位 | 1.Wuhan Univ, Collaborat Innovat Ctr Geospatial Technol, Wuhan, Hubei, Peoples R China 2.Chinese Acad Sci, Acad Optoelect, Beijing, Peoples R China 3.Wuhan Univ, Chinese Antarctic Ctr Surveying & Mapping, Wuhan, Hubei, Peoples R China 4.Wuhan Univ, Collaborat Innovat Ctr Territorial Sovereignty &, Wuhan, Hubei, Peoples R China 5.Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Hubei, Peoples R China 6.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan, Hubei, Peoples R China 7.Finnish Geospatial Res Inst, Dept Remote Sensing & Photogrammetry, Masala 02430, Finland 8.Finnish Geospatial Res Inst, Ctr Excellence Laser Scanning Res, Masala 02430, Finland 9.Univ Politecn Cataluna, UPC IonSat, Barcelona, Spain |
| 推荐引用方式 GB/T 7714 | Jiang, Hu,Liu, Jingbin,Wang, Zemin,et al. Assessment of spatial and temporal TEC variations derived from ionospheric models over the polar regions[J]. JOURNAL OF GEODESY,2019,93(4):455-471. |
| APA | Jiang, Hu.,Liu, Jingbin.,Wang, Zemin.,An, Jiachun.,Ou, Jikun.,...&Wang, Ningbo.(2019).Assessment of spatial and temporal TEC variations derived from ionospheric models over the polar regions.JOURNAL OF GEODESY,93(4),455-471. |
| MLA | Jiang, Hu,et al."Assessment of spatial and temporal TEC variations derived from ionospheric models over the polar regions".JOURNAL OF GEODESY 93.4(2019):455-471. |
入库方式： OAI收割
来源：武汉植物园
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