Ionospheric response characteristics and PPP accuracy analysis at different latitudes during strong geomagnetic storms

• Autorzy: Chen Dongjie , Hu Zhenluan , Wang Fu , Gou Yanmei , Zhang Ting

Identyfikatory

DOI

10.1007/s11600-023-01209-y

• Języki publikacji: EN

Abstrakty

EN

To investigate the response of ionosphere to strong geomagnetic storms at different latitudes, this paper focuses on the response characteristics of global ionospheric ROTI at different latitudes during the September 2017 strong geomagnetic storms based on global ROTI maps and GPS dual-frequency observation data, and explores the PPP accuracy of GPS stations at each latitude during two different types of strong geomagnetic storms. The results show that (i) the daily mean ROTI values during the September 2017 strong geomagnetic storms show a spatial distribution of higher in the global region in the high-latitude region of North America, the northern European region and the whole Antarctic region, and lower in other regions. (ii) The highest ROTI time mean value in the high-latitude belt, with a peak value of 0.30 TECU/min, exceeds twice the peak value of the global time mean value; within the mid-latitude belt, the ROTI time mean value in the northern hemisphere is larger, with values exceeding three times those of the Southern Hemisphere. (iii) During the strong geomagnetic storm in September 2017, the PPP results of high-latitude GPS stations were affected to a greater extent, and the mean value of positioning error in the vertical direction exceeded 2.0 m. (iv) During the strong geomagnetic storm in November 2021, the changing trend of the mean value of PPP positioning error at different latitudes was consistent with that of 2017, but the mean value of positioning error and RMS at high latitudes in 2021 was higher than those in 2017.

Słowa kluczowe

EN

strong geomagnetic storms; ionospheric response; ROTI; PPP

PL

silne burze geomagnetyczne; odpowiedź jonosferyczna; ROTI; PPP

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2024
• Tom: Vol. 72, no. 3
• Strony: 2097--2106
• Opis fizyczny: Bibliogr. 27 poz.

Twórcy

autor

Chen Dongjie

• Zibo Jinzhai Surveying and Mapping Co. Ltd., Zibo 255000, China

autor

Hu Zhenluan

• Jinyun County Land Spatial Planning Service Center, Lishui 321400, China

autor

Wang Fu

• Zibo Jinzhai Surveying and Mapping Co. Ltd., Zibo 255000, China

autor

Gou Yanmei

• Gansu Forestry Polytechnic, Tianshui 741020, China

autor

Zhang Ting

• School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China

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