Comparison and Validation of the Ionospheric Climatological Morphology of FY3C/GNOS with COSMIC during the Recent Low Solar Activity Period

被引：9

作者：

Bai, Weihua ^{[1
,2
,3
,4
,5
]}

Tan, Guangyuan ^{[1
,2
,4
,5
]}

Sun, Yueqiang ^{[1
,2
,3
,4
,5
]}

Xia, Junming ^{[1
,2
,4
,5
]}

Cheng, Cheng ^{[9
]}

Du, Qifei ^{[1
,2
,4
,5
]}

Wang, Xianyi ^{[1
,2
,4
,5
]}

Yang, Guanglin ^{[1
,7
,8
]}

Liao, Mi ^{[7
,8
]}

Liu, Yan ^{[6
]}

Meng, Xiangguang ^{[1
,2
,4
,5
]}

Zhao, Danyang ^{[1
,2
,4
,5
]}

Liu, Congliang ^{[1
,2
,4
,5
]}

Cai, Yuerong ^{[1
,2
,4
,5
]}

Wang, Dongwei ^{[1
,2
,4
,5
]}

Wang, Yingqiang ^{[10
]}

Yin, Cong ^{[1
,2
,4
,5
]}

Hu, Peng ^{[1
,2
,4
,5
]}

Liu, Ziyan ^{[1
,2
,4
,5
]}

机构：

[1] Chinese Acad Sci, NSSC, Beijing 100190, Peoples R China

[2] Beijing Key Lab Space Environm Explorat, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

[4] Chinese Acad Sci, NSSC, JLOAC, Beijing 100190, Peoples R China

[5] Graz Univ, Beijing 100190, Peoples R China

[6] Chinese Meteorol Adm, Natl Meteorol Ctr, Beijing 100081, Peoples R China

[7] Chinese Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China

[8] China Meteorol Adm, Natl Ctr Space Weather, Beijing 100081, Peoples R China

[9] Natl Intellectual Property Adm PRC, Beijing 100088, Peoples R China

[10] Natl Univ Def Technol, Coll Meteorol & Oceanol, Nanjing 211101, Jiangsu, Peoples R China

来源：

REMOTE SENSING | 2019年 / 11卷 / 22期

基金：

中国国家自然科学基金;

关键词：

ionospheric climatology; radio occultation; validation; FY3C/GNOS; COSMIC; GPS RADIO OCCULTATION; ELECTRON-DENSITY; F-REGION; ATMOSPHERE; MISSION; GNOS; SCINTILLATIONS; SATELLITE; F2-LAYER; LAYER;

D O I：

10.3390/rs11222686

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

With the accumulation of the ionospheric radio occultation (IRO) data observed by Global Navigation Satellite System (GNSS) occultation sounder (GNOS) onboard FengYun-3C (FY3C) satellite, it is possible to use GNOS IRO data for ionospheric climatology research. Therefore, this work aims to validate the feasibility of FY3C/GNOS IRO products in climatology research by comparison with that of Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC), laying the foundation for its application in climatology study. Since previous verification works of FY3C/GNOS were done by comparison with ionosondes, this work matched NmF2/hmF2 of FY3C/GNOS and COSMIC into data pairs to verify the profile-level accuracy of FY3C/GNOS IRO data. The statistical results show that the overall correlation coefficients of both NmF2 and hmF2 are above 0.9, the overall bias and std of NmF2 differences between FY3C/GNOS and COSMIC are -2.19% and 17.48%, respectively, and the bias and std of hmF2 differences are -3.29 and 18.01 km, respectively, indicating a high profile-level precision consistency between FY3C/GNOS and COSMIC. In ionospheric climatology comparison, we divided NmF2/hmF2 of FY3C/GNOS into four seasons, then presented the season median NmF2/hmF2 in 5 degrees x 10 degrees grids and compared them with that of COSMIC. The results show that the ionospheric climatological characteristics of FY3C/GNOS and COSMIC are highly matched, both showing the typical climatological features such as equatorial ionosphere anomaly (EIA), winter anomaly, semiannual anomaly, Weddell Sea anomaly (WSA) and so on, though minor discrepancies do exist like the differences in magnitude of longitude peak structures and WSA, which verifies the reliability of FY3C/GNOS IRO products in ionospheric climatology research.

引用

页数：21

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