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<專題討論>2019/9/19(四)14:10綜合大樓2樓48218教室演講 : Dr. Yen-Jung J. Wu (Space Sciences Laboratory, University of California, Berkeley)

張貼者:2019年9月15日 下午7:48Dabby Lu
講題: Exploring the Region where Earth Weather meets Space Weather: Ionospheric Connection Explorer (ICON)
摘要: The NASA’s satellite mission Ionospheric Connection Explorer (ICON) is designed to target on the mesosphere and lower thermosphere (MLT) region where the earth weather meets space weather. The latest ICON launch date is scheduled in October 2019. In order to monitor the source and the response of the ionosphere dynamics, ICON has four instruments on board: 1) Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) provides the neutral wind velocity retrieving from 630.0 nm and 557.7 nm airglow, while the neutral temperature is extracted from 762.0 nm. 2) The Far Ultra Violet Imaging Spectrograph (FUV) measures 157.0 nm to retrieve the atmosphere O/N2 ratio and 135.6 nm recombination emission of O+ ions in the nighttime. 3) The Extreme Ultraviolet Spectrograph (EUV) measures 83.4 and 61.7 nm to retrieve O+ in the daytime. 4) The Ion Velocity Meter (IVM) provides the in-situ measurement of the meridional ion drift perpendicular to the magnetic field at the spacecraft altitude dear 575 km. IVM is used in conjunction with the other ICON instruments to understand the connection between the dynamics of neutral atmosphere and ionosphere through the generation of dynamo current. An overview of the ICON mission and the process from airglow intensity to the science data product will be focused in this talk.
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Dabby Lu,
2019年9月15日 下午7:48
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