IGGCAS OpenIR  > 地球与行星物理院重点实验室
Ionospheric Nighttime Enhancements at Low Latitudes Challenge Performance of the Global Ionospheric Maps
Yang, Yuyan1,2,3; Liu, Libo1,2,3; Zhao, Xiukuan1,3; Xie, Haiyong1,3; Chen, Yiding1,2,4; Le, Huijun1,2,3; Zhang, Ruilong1,2,3; Tariq, M. Arslan1,2,3,5; Li, Wenbo1,2,3
2022-03-01
Source PublicationREMOTE SENSING
Volume14Issue:5Pages:16
AbstractIn this study, two ionospheric nighttime enhancement (INE) events at low latitudes are selected to investigate their spatial features through the observations from Global Navigation Satellite System (GNSS) receivers and ionosondes. For the first time, we present the detailed spatial pictures of premidnight and postmidnight INEs under geomagnetically quiet conditions. The two INE events have the maximum extents of about 11 degrees x 34 degrees and 17 degrees x 25 degrees (longitude x latitude), respectively. Dramatic latitudinal and longitudinal features are revealed in the two INEs. We perform a comparison between the products of Global Ionospheric Maps (GIMs) and total electron content (TEC) measurement from GNSS receivers. However, GIMs fail to capture the TEC distribution during INEs owing to their limited spatial and temporal resolution. Considering the extent of INEs from the observations, the spherical harmonic (SH) expansion adopted by the GIM models needs to upgrade the degree and order to 36. The pixel-based methods developed from two GIM models are required to reduce their grid size for higher spatial resolution. The recommended time interval is shorter than 30 min. Among seven GIMs, CODG and JPLG maps generally have the best performance in reproducing the latitudinal structure of the ionosphere.
Keywordionosphere ionospheric nighttime enhancement (INE) Beidou geostationary orbit (GEO) total electron content (TEC) Global Ionospheric Map (GIM) ionosonde
DOI10.3390/rs14051088
WOS KeywordTOTAL ELECTRON-CONTENT ; POSTMIDNIGHT ENHANCEMENT ; NMF2 ; TEC ; SOLAR ; MORPHOLOGY ; INCREASES ; DENSITY ; REGION ; PEAKS
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000768480400001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/104997
Collection地球与行星物理院重点实验室
Corresponding AuthorLiu, Libo
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Heilongjiang Mohe Observ Geophys, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.Natl Ctr Phys, Ctr Earthquake Studies, Islamabad 44000, Pakistan
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang, Yuyan,Liu, Libo,Zhao, Xiukuan,et al. Ionospheric Nighttime Enhancements at Low Latitudes Challenge Performance of the Global Ionospheric Maps[J]. REMOTE SENSING,2022,14(5):16.
APA Yang, Yuyan.,Liu, Libo.,Zhao, Xiukuan.,Xie, Haiyong.,Chen, Yiding.,...&Li, Wenbo.(2022).Ionospheric Nighttime Enhancements at Low Latitudes Challenge Performance of the Global Ionospheric Maps.REMOTE SENSING,14(5),16.
MLA Yang, Yuyan,et al."Ionospheric Nighttime Enhancements at Low Latitudes Challenge Performance of the Global Ionospheric Maps".REMOTE SENSING 14.5(2022):16.
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