An interhemispheric comparison of GPS phase scintillation with auroral emission observed at the South Pole and from the DMSP satellite

• Published in: Annals of Geophysics
• Main Authors: Prikryl, P., Zhang, Y., Ebihara, Y., Ghoddousi-Fard, R., Jayachandran, P. T., Kinrade, J., Mitchell, C. N., Weatherwax, A. T., Bust, G., Cilliers, P. J., Spogli, L., Alfonsi, Lu., Romano, V., Ning, B., Li, G., Jarvis, M. J., Danskin, D. W., Spanswick, E., Donovan, E., Terkildsen, M.
• Other Authors: Prikryl, P.; Communications Research Centre, Ottawa, ON, Canada, Zhang, Y.; Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Ebihara, Y.; Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, Japan, Ghoddousi-Fard, R.; Natural Resources Canada, Geodetic Survey Division, Ottawa, ON, Canada, Jayachandran, P. T.; University of New Brunswick, Physics Department, Fredericton, NB, Canada, Kinrade, J.; University of Bath, Electronic and Electrical Engineering, Bath, United Kingdom, Mitchell, C. N.; University of Bath, Electronic and Electrical Engineering, Bath, United Kingdom, Weatherwax, A. T.; Siena College, Physics and Astronomy, Loudonville, NY, United States, Bust, G.; Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Cilliers, P. J.; South African National Space Agency, Space Science Directorate, Hermanus, South Africa, Spogli, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Alfonsi, Lu.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Romano, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Ning, B.; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, Li, G.; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, Jarvis, M. J.; British Antarctic Survey, Physical Sciences Division, Cambridge, United Kingdom, Danskin, D. W.; Natural Resources Canada, Geomagnetic Laboratory, Ottawa, ON, Canada, Spanswick, E.; University of Calgary, Department of Physics and Astronomy, AB, Canada, Donovan, E.; University of Calgary, Department of Physics and Astronomy, AB, Canada, Terkildsen, M.; IPS Radio and Space Services, Bureau of Meteorology, Haymarket, NSW, Australia, Communications Research Centre, Ottawa, ON, Canada, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, Japan, Natural Resources Canada, Geodetic Survey Division, Ottawa, ON, Canada, University of New Brunswick, Physics Department, Fredericton, NB, Canada, University of Bath, Electronic and Electrical Engineering, Bath, United Kingdom, Siena College, Physics and Astronomy, Loudonville, NY, United States, South African National Space Agency, Space Science Directorate, Hermanus, South Africa, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, British Antarctic Survey, Physical Sciences Division, Cambridge, United Kingdom, Natural Resources Canada, Geomagnetic Laboratory, Ottawa, ON, Canada, University of Calgary, Department of Physics and Astronomy, AB, Canada, IPS Radio and Space Services, Bureau of Meteorology, Haymarket, NSW, Australia
• Format: Article in Journal/Newspaper
• Language: English
• Published: INGV 2013
• Subjects: Scintillations; Solar-terrestrial interaction; Space weather; Solar variability and solar wind; Magnetic storms; 01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous; 01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation; 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques; 01. Atmosphere::01.02. Ionosphere::01.02.07. Scintillations; 05. General::05.07. Space and Planetary sciences::05.07.02. Space weather; Alta; Arctic; Baffin Island; Canada; South Pole; Antarc*; Antarctica; aurora australis; aurora borealis; Baffin; Canadian High Arctic Ionospheric Network; South pole
• Online Access: http://hdl.handle.net/2122/8731; https://doi.org/10.4401/ag-6227

The global positioning system (GPS) phase scintillation caused by highlatitude ionospheric irregularities during an intense high-speed stream (HSS) of the solar wind from April 29 to May 5, 2011, was observed using arrays of GPS ionospheric scintillation and total electron content monitors in the Arctic and Antarctica. The one-minute phase-scintillation index derived from the data sampled at 50 Hz was complemented by a proxy index (delta phase rate) obtained from 1-Hz GPS data. The scintillation occurrence coincided with the aurora borealis and aurora australis observed by an all-sky imager at the South Pole, and by special sensor ultraviolet scanning imagers on board satellites of the Defense Meteorological Satellites Program. The South Pole (SP) station is approximately conjugate with two Canadian High Arctic Ionospheric Network stations on Baffin Island, Canada, which provided the opportunity to study magnetic conjugacy of scintillation with support of riometers and magnetometers. The GPS ionospheric pierce points were mapped at their actual or conjugate locations, along with the auroral emission over the South Pole, assuming an altitude of 120 km. As the aurora brightened and/or drifted across the field of view of the all-sky imager, sequences of scintillation events were observed that indicated conjugate auroras as a locator of simultaneous or delayed bipolar scintillation events. In spite of the greater scintillation intensity in the auroral oval, where phase scintillation sometimes exceeded 1 radian during the auroral break-up and substorms, the percentage occurrence of moderate scintillation was highest in the cusp. Interhemispheric comparisons of bipolar scintillation maps show that the scintillation occurrence is significantly higher in the southern cusp and polar cap. Published R0216 1.7. Osservazioni di alta e media atmosfera 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale JCR Journal open