Japan Geoscience Union Meeting 2025

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM10] Space Weather and Space Climate

Tue. May 27, 2025 9:00 AM - 10:30 AM 302 (International Conference Hall, Makuhari Messe)

convener:Ryuho Kataoka(National Institute of Polar Research), Antti Pulkkinen(NASA Goddard Space Flight Center), Mary Aronne(NASA GSFC/CUA), Yumi Bamba(National Institute of Information and Communications Technology), Chairperson:Ryuho Kataoka(National Institute of Polar Research), Yumi Bamba(National Institute of Information and Communications Technology)

10:15 AM - 10:30 AM

[PEM10-06] New space weather alert considering social impact and space weather information usage guideline

*Takuya Tsugawa1 (1.National Institute of Information and Communications Technology)

Keywords:space weather, alert, social impact, guideline

NICT has been preparing for the distribution of new space weather alert based on the new criteria considering social impact recommended by the Ministry of Internal Affairs and Communications "Study Group on Advanced Space Weather Forecasting" (hereinafter referred to as the "Study Group") in 2022 (https://www.soumu.go.jp/menu_news/s-news/01tsushin05_02000047.html).
Conventional space weather alert criteria focus on the scale of the phenomenon and do not include information on social impacts. However, in order for users of space weather alert to determine specific responses, it is necessary to provide alerts based on social impacts. Therefore, the study group discussed new types and criteria of alerts that take into account the social impact of space weather phenomena, and established a total of 17 types of alerts in the five fields of communications and broadcasting, positioning, satellite operations, electric power, and aviation exposure. The alert will be distributed in the fields of communications and broadcasting (HF band), space system operation (satellites), and aviation exposure, for which the alert criteria have been established. The fields for which the criteria have not yet been established, such as the GNSS positioning/navigation field, will continue to be studied and will be added to this alert system as soon as they are established.
In addition, NICT has developed a document (guideline) summarizing what precautions should be taken when using space weather information and what actions should be taken when users receive this alert.