Preliminary results of the imaging observation of the MTI region by Ionosphere, Mesosphere, Upper Atmosphere, and Plasmasphere Mapping Mission on the International Space Station
Abstract
ISS-IMAP (Ionosphere, Mesosphere, upper Atmosphere, and Plasmasphere mapping) mission is a space-borne mission on the international space station (ISS) to investigate the mesoscale structures in the ionosphere, the mesosphere, and the plasmasphere by imaging observations. It consists of two imaging instruments. Visible-light and infrared spectrum imager (VISI) observes the airglow in the MTI region. Extra ultraviolet imager (EUVI) observes the resonant scattering from ions in the ionosphere and the plasmasphere. The objective of this mission is to clarify the energy transport process by the structures whose horizontal scale is 50-500km in the Earth's upper atmosphere, and the effect of the structures and disturbances on the space-borne engineering system. ISS-IMAP measures the following three parameters in the lower latitude region than 50 degrees: (1) distribution of the atmospheric gravity wave in the mesopause (87km), the ionospheric E-region (95km), and the ionospheric F-region (250km) (2) distribution of the ionized atmosphere in the ionospheric F-region (3) distribution of O+ and He+ ions in the ionosphere and plasmasphere. Its continuous observation started in October 2012. The planned observational period is three years. VISI observes the airglow of 730nm (OH, Alt. 85km), 762nm (O2, Alt. 95km), and 630nm (O, Alt. 250km) in the Nadir direction. The global distributions of the airglow structures whose scale size is 50-500km in the nightside have been elucidated by the VISI observation. The topological dependence of AGW in the MTI region has been clarified by this novel space-borne observation. The preliminary results of the ISS-IMAP mission by VISI and EUVI will be introduced in the presentation.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFMSA51C..08S
- Keywords:
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- 2427 IONOSPHERE Ionosphere/atmosphere interactions;
- 2435 IONOSPHERE Ionospheric disturbances;
- 0342 ATMOSPHERIC COMPOSITION AND STRUCTURE Middle atmosphere: energy deposition;
- 0358 ATMOSPHERIC COMPOSITION AND STRUCTURE Thermosphere: energy deposition