Inter-satellite calibration of FengYun 3 medium energy electron fluxes with POES electron measurements |
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Authors: | Yang Zhang Binbin Ni Zheng Xiang Xianguo Zhang Xiaoxin Zhang Xudong Gu Song Fu Xing Cao Zhengyang Zou |
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Affiliation: | 1. Department of Space Physics, School of Electronic Information, Wuhan University, Wuhan, Hubei, China;2. Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences, Beijing, China;3. Beijing Key Laboratory of Space Environment Exploration, Beijing, China;4. Key Laboratory of Space Weather, National Center for Space Weather, China Meteorological Administration, Beijing, China |
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Abstract: | We perform an L-shell dependent inter-satellite calibration of FengYun 3 medium energy electron measurements with POES measurements based on rough orbital conjunctions within 5?min?×?0.1?L?×?0.5 MLT. By comparing electron flux data between the U.S. Polar Orbiting Environmental Satellites (POES) and Chinese sun-synchronous satellites including FY-3B and FY-3C for a whole year of 2014, we attempt to remove less reliable data and evaluate systematic uncertainties associated with the FY-3B and FY-3C datasets, expecting to quantify the inter-satellite calibration factors for the 150–350?keV energy channel at L?=?2–7. Compared to the POES data, the FY-3B and FY-3C data generally exhibit a similar trend of electron flux variations but more or less underestimate them within a factor of 5 for the medium electron energy 150–350?keV channel. Good consistency in the flux conjunctions after the inter-calibration procedures gives us certain confidence to generalize our method to calibrate electron flux measurements from various satellite instruments. |
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Keywords: | Inter-satellite calibration Medium energy electron flux L-dependent adjustment factors Fengyun-3 satellites Earth's radiation belts |
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