The Initial Assessment of Ionospheric Radio Occultation Data of MSS-1 Satellite and Its Applications in Scintillation Exploration

IF 2.9 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Earth and Space Science Pub Date : 2024-09-11 DOI:10.1029/2024EA003695

M. J. Wu, H. Y. Yue, P. Guo, X. Ma, H. G. Li, J. J. Dong, F. F. Zuo

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Abstract

The Macau Science Satellites (MSS-1) mission, consisting of twin low earth orbit satellites (Satellite A and B), is the first low-inclination and high-precision geomagnetic surveying satellite project in China. Among the multiple scientific payloads equipped with the scientific satellites, MSS-1 carries a GNSS radio occultation (RO) receiver on Satellite A, and aims to observe the Earth's ionosphere and monitor the space weather especially in the South Atlantic Anomaly (SAA) area. This paper focuses on the ionospheric data of MSS-1 obtained during the first 3 months after its launch, and assesses the RO products as well as initial scintillation measurements. Results show that MSS-1 RO data have very good agreement with contemporary COSMIC-2 and ionosonde observations. The scintillation amplitude indices S4 are comparable with that of COSMIC-2 and well reflect the occurrence rates and distributions of equatorial plasma bubble and sporadic E (Es) in June solstice season. Special attentions are paid to the SAA longitude sector and inspire explorations on the seasonal variations and local-time dependences of ionospheric irregularities.

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MSS-1 卫星电离层无线电掩星数据的初步评估及其在闪烁探测中的应用

澳门科学卫星一号（MSS-1）任务由两颗低地球轨道卫星（卫星 A 和卫星 B）组成，是中国首个低倾角、高精度地磁测量卫星项目。在科学卫星配备的多种科学有效载荷中，MSS-1 在卫星 A 上搭载了全球导航卫星系统无线电掩星接收器，旨在观测地球电离层和监测空间天气，特别是南大西洋异常区（SAA）的空间天气。本文侧重于 MSS-1 发射后头 3 个月获得的电离层数据，并评估了 RO 产品和初始闪烁测量结果。结果表明，MSS-1 RO 数据与当代 COSMIC-2 和电离层观测数据非常吻合。闪烁振幅指数 S4 与 COSMIC-2 相当，很好地反映了赤道等离子体气泡和零星 E（Es）在六月至日季节的发生率和分布情况。对 SAA 经度扇区给予了特别关注，并启发了对电离层不规则现象的季节变化和本地时间依赖性的探索。

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来源期刊

Earth and Space Science Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

5.50

自引率

3.20%

发文量

285

审稿时长

19 weeks

期刊介绍： Marking AGU’s second new open access journal in the last 12 months, Earth and Space Science is the only journal that reflects the expansive range of science represented by AGU’s 62,000 members, including all of the Earth, planetary, and space sciences, and related fields in environmental science, geoengineering, space engineering, and biogeochemistry.