Highlights High correlation between data of CSES and Swarm on global scale. High correlation on intersecting ground track probe data. High correlation on relative relationship between nighttime and daytime data. In situ electron density is underestimated by CSES LAP. LAP data are available for application on relative variation studies.
Abstract A preliminary validation of the in situ electron density data obtained by CSES, a newly launched electromagnetic satellite in China on Feb. 2, 2018, using the Swarm satellites LP measurements, is carried out in this study to assess the consistency and reliability of the LAP observations onboard CSES. Three ways are implemented to achieve the goal: (1) comparison of the global distribution patterns for both the daytime and nighttime data, (2) comparison of the data between CSES and Swarm at intersecting ground tracks with similar local time, and (3) comparison of the relative relationship between nighttime and daytime data using the nighttime enhancement space climatology phenomenon. The results show that the in situ electron densities estimated by LAP onboard CSES are in good agreement with data from the Swarm satellites in terms of global distributions, local details and relationship between nighttime and daytime data. A systematic bias between them is also found: LAP density estimates are much lower than that of Swarm satellites. However, the highly consistent relative variations between the two datasets proves the electron density dataset of LAP onboard CSES for now is applicable for the relative data variation applications on ionosphere-related studies. Further calibration of the LAP dataset is recommended using electron density data obtained by different measurements.
Preliminary validation of in situ electron density measurements onboard CSES using observations from Swarm Satellites
Advances in Space Research ; 64 , 4 ; 982-994
2019-05-14
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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