Temporal variation of the volume emission rates between OI5577 and O2(0,1) |
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| Institution: | 1. Departamento de Fisica/CCT/UFPB, R. Aprígio Veloso, 882, Campina Grande, PB, 58109-970 Brazil;2. Instituto Nacional de Pesquisas Espaciais (INPE), S. J. Campos, SP, Brazil;1. CAS Key Laboratory of Geospace Environment, Department of Geophysics & Planetary Sciences, University of Science & Technology of China, Hefei, Anhui 230026, China;2. Mengcheng National Geophysical Observatory, School of Earth & Space Sciences, University of Science & Technology of China, Hefei, Anhui 230026, China;3. Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science & Technology of China, Hefei, Anhui 230026, China;4. State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China;5. Key Laboratory of Ionospheric Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China;6. Jülich Supercomputing Centre, Forschungszentrum Jülich, Jülich, Germany;1. Norwegian University of Science and Technology (NTNU), Trondheim, Norway;2. Birkeland Centre for Space Science, Bergen, Norway;1. Institute of Physics, Ernst-Moritz-Arndt-University of Greifswald, Felix-Hausdorff-Str. 6, 17489 Greifswald, Germany;2. Institute of Environmental Physics, University of Bremen, Bremen, Germany;1. Department of Physics, NTNU, Trondheim, Norway;2. Birkeland Centre for Space Science, Bergen, Norway;3. School of Coastal and Marine Systems Science, Coastal Carolina University, SC, USA;1. Saint-Petersburg State University, Department of Atmospheric Physics, 198504, St. Petersburg, Russia;2. Russian State Hydrometeorological University, Department of Meteorological Forecasts, Saint-Petersburg, Russia;1. Department of Physics, University of Bari, I-70126 Bari, Italy;2. INFN, Sezione di Bari, I-70126 Bari, Italy;3. Department of Physics and Astronomy, University of Florence, I-50019 Sesto Fiorentino, Florence, Italy;4. INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy;5. Department of Physics, University of Naples “Federico II”, I-80126 Naples, Italy;6. INFN, Sezione di Naples, I-80126 Naples, Italy;7. Lebedev Physical Institute, RU-119991 Moscow, Russia;8. INFN, Sezione di Trieste, I-34149 Trieste, Italy;9. Ioffe Physical Technical Institute, RU-194021 St. Petersburg, Russia;10. Space Science Center, University of New Hampshire, Durham, NH, USA;11. KTH, Department of Physics, and the Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, SE-10691 Stockholm, Sweden;12. INFN, Sezione di Rome “Tor Vergata”, I-00133 Rome, Italy;13. RIKEN, Advanced Science Institute, Wako-shi, Saitama, Japan;14. IFAC, I-50019 Sesto Fiorentino, Florence, Italy;15. Heliophysics Division, NASA Goddard Space Flight Ctr, Greenbelt, MD, USA;p. National Research Nuclear University MEPhI, RU-115409 Moscow, Russia;q. Department of Physics, University of Rome “Tor Vergata”, I-00133 Rome, Italy;r. Agenzia Spaziale Italiana (ASI) Science Data Center, I-00133 Rome, Italy;s. Department of Physics, University of Trieste, I-34147 Trieste, Italy;t. INFN, Laboratori Nazionali di Frascati, I-00044 Frascati, Italy;u. Department of Physics, Universität Siegen, D-57068 Siegen, Germany;v. Indian Centre for Space Physics, Kolkata 700084, West Bengal, India;w. IAPS/INAF, I-00133 Rome, Italy;x. Electrical and Computer Engineering, New Mexico State University, Las Cruces, USA |
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| Abstract: | The intensities of the upper mesospheric airglow emissions, OI 557.7 nm and O2(b) atmospheric (0,1) band at 864.5 nm, have been measured since October 1998 using a ground-based multichannel airglow photometer located near the equator at São João do Cariri (7S, 35W). The intensity ratio between the two emissions, OI5577/O2b(0,1), was obtained as a function of time. The annual average of the ratio R in 1998 was 0.41 ± 0.14, and showed considerable day to day variations, ranging from 0.2 to 0.6. Nocturnal variations of the ratio also demonstrate a large amplitude of oscillation, varying between 0.3 to 0.6. These results were compared with a model calculation. |
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