Recent Advances in Research of the Chinese Meridian Project

Wang, Chi; Chen, Zhiqing; Xu, Jiyao

doi:10.11728/cjss2020.05.679

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…This study covers the occurrence rates of Es detected by the Digisonde Portable Sounder (DPS) model 4D installed in Santa Maria (URSI code SMK29, local time [LT] = UT − 3), Brazil, from July 2019 to June 2020. This system is the result of a cooperation between the Space Weather Monitoring Meridian Project of China and the National Institute for Space Research (INPE) to monitor the space weather in the South American sector, particularly in southern Brazil within the SAMA region, where there is a lack of ionosonde measurements (Liu et al., 2021; Moro et al., 2019; Wang et al., 2020).…”

Section: Data Set and Methodsmentioning

confidence: 99%

Analysis of Blanketing Sporadic‐E Layer and Associated Tidal Periodicities Over a Brazilian Station Undergoing a Transition From Low Latitude to Midlatitude

Moro,

Xu,

Bageston

et al. 2023

JGR Space Physics

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Analyses on a complete year of Digisonde data are conducted to investigate the sporadic‐E (Es) layers over Santa Maria (29.7°S, 53.8°W, dip lat.: −37°), Brazil. This region is undergoing a transition from low latitude to midlatitude within the South American Magnetic Anomaly (SAMA), which provides a key motivation to explore their behavior and the associated tidal periodicities. The Es are classified into four types: flat (Esf), low (Esl), high (Esh), and cusp (Esc). The diurnal and seasonal variations of their top (ftEs) and blanketing (fbEs) frequencies and virtual height (h′Es) are examined. The frequency parameters show the presence of intense Es during equinoxes besides summer. It is also remarkable that the higher values of mean h′Es during winter compared to the other seasons during daytime. These observations differ from previous theories about midlatitude Es layers. The diurnal occurrence rates of the Esb types exhibited distinct dependencies on both local time and seasons. The Esh and Esc were observed exclusively during the daytime, with the former dominating the occurrences in all seasons. To investigate any tidal periodicities embedded in the ftEs, fbEs, and h′Es time series, the Lomb‐Scargle technique was employed. The analysis revealed the presence of 24‐, 12‐, 8‐, and 6‐hr periodicities in both fbEs and h′Es when considering the entire year of data. However, when the data are fractioned into seasons, the predominant periodicities were found to be 24‐ and 12‐hr cycles. Furthermore, when considering the different Esb types, the Lomb‐Scargle analysis indicated varying periodicities.

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Section: Data Set and Methodsmentioning

confidence: 99%

Analysis of Blanketing Sporadic‐E Layer and Associated Tidal Periodicities Over a Brazilian Station Undergoing a Transition From Low Latitude to Midlatitude

Moro,

Xu,

Bageston

et al. 2023

JGR Space Physics

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“…Connecting instrumentation in comprehensive networks can add a valuable global component to ground-based measurements. Currently the most ambitious network is the Meridian Space Weather Monitoring Project of the Chinese National Space Science Centre(Chi et al, 2020). This network comprises 15 monitoring stations along 30 o N and 120 o E, equipped with magnetometers, ionosondes and digisondes, radars, lidars, Fabry-Perot interferometers and sounding rockets.Other examples include the networking of meteor radars to derive large-scale wind fields in the MLT (e.g Stober et al (2021)…”

mentioning

confidence: 99%

Opinion: Recent Developments and Future Directions in Studying the Chemistry of the Mesosphere and Lower Thermosphere

Plane

Gumbel

Kalogerakis

et al. 2023

Preprint

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Abstract. This Opinion article begins with a review of important advances in the science of the Mesosphere and Lower Thermosphere (MLT) region of the atmosphere that have occurred over the past two decades since the founding of Atmospheric Chemistry and Physics. The emphasis is on chemistry (although, of course, this cannot be decoupled from discussion of atmospheric physics and dynamics), and the primary focus is on work during the past 10 years. Topics that are covered include: observations (satellite, rocket and ground-based techniques); the variability and connectedness of the MLT on various length- and time-scales; airglow emissions; the cosmic dust input and meteoric metal layers; and noctilucent (or polar mesospheric) ice clouds. The paper then concludes with a discussion of important unanswered questions and likely future directions for the field over the next decade.

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A Global Ionosphere Situational Awareness Architecture for Over the Horizon Radar Operations

Boschetti,

Nikas,

Sharma

et al. 2024

2024 IEEE Aerospace Conference

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Recent Advances in Research of the Chinese Meridian Project

Cited by 4 publications

References 34 publications

Analysis of Blanketing Sporadic‐E Layer and Associated Tidal Periodicities Over a Brazilian Station Undergoing a Transition From Low Latitude to Midlatitude

Analysis of Blanketing Sporadic‐E Layer and Associated Tidal Periodicities Over a Brazilian Station Undergoing a Transition From Low Latitude to Midlatitude

Opinion: Recent Developments and Future Directions in Studying the Chemistry of the Mesosphere and Lower Thermosphere

A Global Ionosphere Situational Awareness Architecture for Over the Horizon Radar Operations

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