5:15 PM - 7:15 PM
[MSD35-P06] Mission on monitoring and elucidating global environmental changes (global radiative forcing and ecosystem changes that affect global warming) (successor to GCOM-C)
Keywords:Global environmental change, GCOM-C, SGLI, J-train
The purpose of this proposal is to monitor and clarify global environmental changes (global radiative forcing and ecosystem changes that affect global warming) through long-term, continuous quantitative monitoring. Optical (near ultraviolet to thermal infrared) imager technology is a fundamental technology that can be developed into new optical sensors in the future, and it is necessary to continue using it to maintain global dominance. The satellite itself is currently in a healthy state, and further results are expected in the future. It is also building a position as a social infrastructure as a satellite that provides global environmental information. The optical imager, which is a descendant of SGLI, can monitor a wide range of wavelengths, allowing it to monitor changes in the climate system that change with global warming, including changes that are not currently expected. In addition, by accurately grasping the progress of predicted climate change, it is possible to evaluate the effectiveness of global warming prevention policies, formulate adaptation measures for the future, and make diagnostic course corrections. By having its own information source as a domestic sensor, Japan can have its own unique judgment material for understanding the climate change situation, and can disseminate information to the world as global standard information, thereby having an international strategy for climate change. Furthermore, by making it a J-Train type of observation using multiple satellites (the core satellites described in Meteorological Research Note No. 234 "Analysis of Global Trends Related to Future Visions of Earth Observation" pp. 16-18), it will help raise the level of Japan's earth observation and space industry. The J-Train concept is also included in JAXA's consideration of the next GCOM-C, and discussions are underway to enhance and prioritize the goals set out in GCOM-C by promoting collaboration and sharing with activities of various foreign countries such as MetOP and JPSS in cooperation with JAXA's activities.
The operation period of the core satellites, which is expected based on the track record of the GCOM series, needs to be considered as being more than ten years. The extended operation period (about three times longer than before) is expected to have a significant effect on long-term data acquisition and cost reduction. However, it cannot be denied that the decrease in development opportunities will increase the risk of losing opportunities to introduce new technologies and related human resources. Therefore, we propose to carry out experimental demonstrations of challenging functions on multiple small satellites during the time between launches of core satellites (a dozen years or so), and to add the new functions that have already been proven technically to the next core satellite. Of course, it is expected that new scientific results will be obtained by combining existing core satellites during the demonstration experiments, and that this will also contribute to the development and retention of related human resources. Currently, GCOM-C-related researchers are considering challenging observation plans (such as hyper, wide-angle polarization observations, etc.). Furthermore, while keeping in contact with private space activities, we have begun considering whether the successor satellite will play a part in Japan's space infrastructure.
The operation period of the core satellites, which is expected based on the track record of the GCOM series, needs to be considered as being more than ten years. The extended operation period (about three times longer than before) is expected to have a significant effect on long-term data acquisition and cost reduction. However, it cannot be denied that the decrease in development opportunities will increase the risk of losing opportunities to introduce new technologies and related human resources. Therefore, we propose to carry out experimental demonstrations of challenging functions on multiple small satellites during the time between launches of core satellites (a dozen years or so), and to add the new functions that have already been proven technically to the next core satellite. Of course, it is expected that new scientific results will be obtained by combining existing core satellites during the demonstration experiments, and that this will also contribute to the development and retention of related human resources. Currently, GCOM-C-related researchers are considering challenging observation plans (such as hyper, wide-angle polarization observations, etc.). Furthermore, while keeping in contact with private space activities, we have begun considering whether the successor satellite will play a part in Japan's space infrastructure.