JSPS Grant-in-Aid for International Leading Research
International joint research of geospace variability by combining multi-point ground and satellite observations and modeling
(PBASE program)

Announcement of Opportunity

Program Purpose

The space around the Earth (geospace), including the upper atmosphere, is highly dynamic. This is due to ultraviolet and X-ray radiation from the Sun, magnetic storms caused by high-energy plasma particles from solar explosions, and atmospheric waves from the lower atmosphere. These geospace variations affect radio communications between satellites and the ground, causing satellite positioning and communication failures. Magnetic storms also cause the atmosphere to heat and expand resulting in alteration of satellites’ orbits. In addition, high-energy plasma particles from solar explosions and magnetic storms cause radiation hazards to astronauts, satellites, and aircraft crews. As humanity’s use of space continues to increase, understanding and predicting these geospace variabilities have become an urgent issue.

To understand the mechanism behind geospace variability, it is necessary to combine ground instruments and satellites. This allows for comprehensive measurements of geospace. Furthermore, there is also a need to coordinate with modeling through numerical simulations to complement sparse observations and for quantitative evaluations, including space weather prediction. The PBASE program aims to significantly contribute to understanding and predicting geospace variabilities by combining ground-based and satellite observations and modeling, covering a wide area in both altitude and latitude/longitude directions.

Program Purpose

Research Method

To understand the mechanism behind geospace variability, it is necessary to combine ground instruments and satellites. This allows for comprehensive measurements of geospace. Furthermore, there is also a need to coordinate with modeling through numerical simulations to complement sparse observations and for quantitative evaluations, including space weather prediction. The PBASE program aims to significantly contribute to understanding and predicting geospace variabilities by combining ground-based and satellite observations and modeling, covering a wide area in both altitude and latitude/longitude directions.

Research Method

The Japanese members belonging to Nagoya, Kyoto and Kyushu Universities, and the National Institute of Polar Research (NIPR) operate comprehensive ground-based measurements. This team has already been identified as a top-level research group in Japan by the Science Council of Japan and the Ministry (MEXT) in the study of the solar-terrestrial coupling system including geospace. The international joint researchers (overseas Co-Is) are top-level scientists in satellite measurements and modeling, i.e., ionospheric satellites (Swarm) through Prof. Claudia Stolle (Germany) and geospace exploration satellites (RBSP, MMS, FAST, and Cluster) through Prof. Lynn Kistler (USA). Coordination will also be made to include modeling based on TIEGCM through Dr. Gang Lu (USA) and on the kinetic ring current-atmosphere interactions model, jointly developed by Japan and the USA.

ground-based measurements

International Capacity Building

Early-career researchers including newly hired Post-Doctoral Fellows and Ph.D students are participating in this program. All these students and early career scientists will be promoting research focusing on ground-based observation and modeling. They will stay overseas Co-I’s institutes to compare their own ground observations and modeling, with satellite observations/modeling. This experience will let them develop broad research skills to approach scientific topics using different methods. We also support their field trips for their experience of ground-based measurements. We also invite overseas students and early-career scientists to stay in Japan for 3 months for collaborative research.

Oversea Stays and Trips

Scientists

traveler name affiliation position dates of travel destination short report or photo
Kirolosse GIRGIS Kyushu University early-career staff Apr. 3 - May. 6, 2023 Egypt
Tsurutani, B. T. former NASA Jet Propulsion Laboratory senior staff Jun. 23 - Jul. 1, 2023 ISEE, Nagoya University
Prayitno Abadi National Research and Innovation Agency (BRIN) early-career staff Jun. 26, 2023 - Jun. 25, 2024 ISEE, Nagoya University
Mizuki Fukizawa National Institute of Polar Research early-career staff Aug.24 - Sep.7 2023 Tromsoe and Skibotn, Norway, Kilpisjarvi, Finland report
Khan-Hyuk Kim Kyung Hee University senior staff Sep. 1 - Dec. 28, 2023 ISEE, Nagoya University
Suman K. Das Leibniz Institute of Atmospheric Physics early-career staff Oct. 30 - Dec. 2, 2023 Kyoto University report
Facundo Poblet Rostock University early-career staff Oct. 6 - Nov. 27 ,2023 Kyushu University report


Students

traveler name affiliation position dates of travel destination short report or photo
Momoka Matsuoka Nagoya University student Oct. 3 - 13 ,2023 Kilpisjarvi, Sodankyla, Rovaniemi in Finland; Tromsoe, Skibotn in Norway report
Ardra K.P. University of Warwick student Jun. 10 - Aug. 21, 2023 ISEE, Nagoya Universityreport
Akari Nagatani Nagoya University student Jun. 19 - 29, 2023 University of New Hampshiere, Durham, NH report
Manu Verghese Institute of Space Sciences, Shandong University, Weihai, Chaina student Oct.1 - Dec.29, 2023 ISEE, Nagoya University
Akshay Shivaji Patil Sanjay Ghodawat University, Kolhapur, India student Oct.2 - Dec.29, 2023 ISEE, Nagoya University
Kshitiz Upadhyay Physical Research Laboratory, Ahmedabad, India student Oct.1 - Dec.29, 2023 ISEE, Nagoya University report
Lalitha G Krishnan Space Physics Laboratory, VSSC, India student Oct.1 - Dec.29, 2023 ISEE, Nagoya University
Rajesh Kumar Barad Indian Institute of Geomagnetism, India student Nov. 26, 2023 - Feb. 20, 2024 ISEE, Nagoya University
George Ochieng Ondede The Technical University of Kenya student Jan.10 - Mar.29, 2024 ISEE, Nagoya University
Tomotaka Tanaka National Institute of Polar Research student Nov. 19 - Dec. 1, 2023 Tromsoe, Norway report
Florian Guenzkofer Institute for Solar-Terrestrial Physics student Sep. 2 - Nov. 29, 2023 Kyushu University report

Oversea and domestic field trips

Scientists

traveler name affiliation position dates of travel destination short report or photo
Kazuo Shiokawa Nagoya University Professor Aug. 26 - Sep. 2, 2023 Nain, Canada report
Kazuo Shiokawa Nagoya University Professor Sep. 7 - 16, 2023 Athabasca, Canada report


Students

traveler name affiliation position dates of travel destination short report or photo
Taiki Kikuchi Nagoya University student Aug. 26 - Sep. 2, 2023 Nain, Canada report
Saki Morita Nagoya University student Aug. 26 - Sep. 2, 2023 Nain, Canada report
Yuri Ito University of Electro-Communications student Aug.28 - Sep.10, 2023 Tromsoe Norway, Kiruna Sweden report
CHEN, Liwei Nagoya University student Sep. 7-16, 2023 Athabasca, Canada report
Rei Sugimura Nagoya University student Sep. 7-16, 2023 Athabasca, Canada report
Masaki Gomi Nagoya University undergraduate student Sep.28 - 30, 2023 Kagoshima, Japan report
Yuto Hotta Nagoya University undergraduate student Sep.28 - 30, 2023 Kagoshima, Japan report
Taiki Kikuchi Nagoya University student Sep.28 - 30, 2023 Kagoshima, Japan report
Saki Morita Nagoya University student Sep.28 - 30, 2023 Kagoshima, Japan report
Lalitha G Krishnan Space Physics Laboratory, VSSC, India student Oct.16, 2023 Shigaraki, Japan report
Manu Verghese Institute of Space Sciences, Shandong University, Weihai, Chaina student Oct.16, 2023 Shigaraki, Japan report
Kshitiz Upadhyay Physical Research Laboratory, Ahmedabad, India student Oct.16, 2023 Shigaraki, Japan report
Akshay Shivaji Patil Sanjay Ghodawat University, Kolhapur, India student Oct.16, 2023 Shigaraki, Japan report

Implementation Procedures
(Measurements and Database)

4. Database and analysis tools

The data obtained by this program will be shared with world communities via IUGONET and ESG Science Center to stimulate international collaborative research.

Schedule

This program was adopted in December 2022 and is planned for seven years from FY2022 to FY2028. The EISCAT_3D radar will start operation in the first half of 2023. Intensive campaign observations will be conducted in the winter of the second and third years when the radar starts operating, and in the winter of 2025 when the solar activity is expected to reach a maximum. A group of satellites has already been launched and is still in operation. In the event of failure of these satellites, the results will be achieved through the use of observation data and collaboration with other satellites. The global model will be pre-tuned over the next year, and then validated and refined through comparison with observations to reproduce and quantify global geospatial variability. We will continue to build a common ground-satellite-modelling database and develop tools for integrated analysis of all data.

PBASE program Schedule

Members

Principal Investigator

SHIOKAWA, Kazuo Professor, Nagoya University

Completed the master’s course of the special study of geophysics of the Graduate School of Science of Tohoku University in 1990, becoming a Research Associate of the Solar-Terrestrial Environment Laboratory (currenty,Institute for Space-Earth Environmental Research (ISEE)), Nagoya University in 1990, a visiting researcher of the Max-Planck Institute for extraterrestrial Physics, Germany from 1996 to 1997, an assistant professor of Nagoya University in 1999, and staying in the current post from 2008. Prof. Shiokawa’s speciality is the observational research of space around the earth by the optical observation and electromagnetic field measurement of aurora and nightglow.Serving as co-chair of the SCOSTEP’s VarSITI (Variability of the Sun and Its Terrestrial Impact) program for 2014-2018 and SCOSTEP President after 2019. In this program, he wil supervise the project, ground measurements, and coordination with satellites and modeling.

SHIOKAWA, Kazuo Professor, Nagoya University

Co-Investigators

MIYOSHI, YoshizumiProfessor, Nagoya University

ERG satellite and ground measurements, radiation belts modeling, and analysis tool development

OGAWA, YasunobuProfessor, National Institute of Polar Research

EISCAT_3D radar measurement and coordination with satellites and modeling

YOKOYAMA, TatsuhiroAssociate Professor, Kyoto University

MU and Equatorial Atmosphere radar measurement and coordination with satellites and modeling

YOSHIKAWA, AkimasaProfessor, Kyushu University

Ground electromagnetic measurement and coordination with satellites and modeling

HSIEH, YikaiJunior Associate Professor, Kyoto University

Simulations of magnetospheric and upper atmospheric energetic particles and coordination with satellites and modeling

Overseas Co-Investigators

KISTLER, LynnUniversity of New Hampshire (UNH), USA

coordination with magnetospheric satellites, such as Van Allen Probes, MMS, and Cluster

LU, GangHigh Altitude Observatory (HAO), USA

Coordination with modeling of the upper atmosphere, such as MAGE/TIEGCM modeling

STOLLE, ClaudiaLeibniz Institute of Atmospheric Physics (IAP), Germany

Coordination with ionospheric satellites, such as Swarm, and ground-based observations of IAP

Research collaborators (faculty staff)

OTSUKA, YuichiAssociate Professor, Nagoya University

GNSS measurements and database constructions

NISHITANI, NozomuAssociate Professor, Nagoya University

SuperDARN HF radar measurements

NOSE, MasahitoProfessor, Nagoya City University

magnetometer measurements

OYAMA, Shin-ichiroLecturer, Nagoya University

optical and EISCAT_3D measurements

KATAOKA, RyuhoAssociate Professor, National Institute of Polar Research

Optical and electromagnetic measurements in the polar region

YAMAMOTO, MamoruProfessor, Kyoto University

MU and Equatorial Atmosphere radar measurement and coordination with satellites and modeling

LIU, HuixinProfessor, Kyushu University

ionospheric satellites and coordination with ground measurements and modeling

Research collaborators (PBASE Research Assistant)

IJUIN, TakuyaPBASE Research Assistant, Kyushu University

LIU, PengPBASE Research Assistant, Kyoto University

Farhan Naufal RifqiPBASE Research Assistant, Kyushu University

Other research collaborators (non-faculty staff and students) and overseas researchcollaborators

List of publications

Comic Book