Development and maintenance of mission operation system for AMSR3 onboard the GOSAT-GW satellite

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EAR90401

Subject Category: Space Technology

Responsible Representative: Takeshi Miura, Space Technology Directorate I, GOSAT-GW Project Team
Contact Information: Yasuhisa Yamamoto,JAXA/GOSAT-GW(yamamoto.yasuhisa@jaxa.jp)
Members: Hiroyuki Miyamoto, Yasuhisa Yamamoto, Hiroki Morita, Taro Makino, Yuki Kobayashi, Kyoka Murata, Yosuke Morinaga, Hisashi Ozeki, Takuya Shimada, Yuji Taniguchi, Takeshi Nishimura, Yousuke Yamamoto, Yuko Yoshizane

Abstract

Advanced Microwave Scanning Radiometer 3 (AMSR3) is installed on the Greenhouse Gases and Water Cycle Observing Satellite (GOSAT-GW), which was launched in June 2025.

It is a sensor for the purpose of observing microwaves naturally radiated from the surface of the earth, the surface of the sea, the atmosphere, etc.

AMSR3 has an enhanced observable wavelength band compared to AMSR2 onboard SHIZUKU, and will be able to observe snowfall and water vapor on land.

The AMSR3 Mission Operation System is a processing system for creating products from data observed by the AMSR3.

The purpose of this project is to recreate the products using this system and the improved algorithm after the AMSR3 observation starts, and to provide these products to the users in a short period of time.

Reference URL

Please refer to https://www.satnavi.jaxa.jp/ja/project/gosat-gw/index.html .

Reasons and benefits of using JAXA Supercomputer System

By using JSS3, which has a large-scale and high-performance processing environment, for a short period of time and intensively to recreate the vast amount of AMSR3 data observed in the past, the recreated product can be delivered to the user in a short time.

Achievements of the Year

The AMSR3 mission operational system is currently in operation

In FY2025, improved algorithm was applied to the AMSR3 mission operation system after the start of AMSR3 observations, and the product was re-created.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: OpenMP
Number of Processes: 1
Elapsed Time per Case: 48 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.00

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name	CPU Resources Used (Core x Hours)	Fraction of Usage*2(%)
TOKI-SORA	0.00	0.00
TOKI-ST	29199.95	0.03
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
TOKI-TST	0.00	0.00
TOKI-TGP	0.00	0.00
TOKI-TLM	0.00	0.00

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	0.00	0.00
/data and /data2	0.00	0.00
/ssd	0.00	0.00

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	0.01	0.00

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.

ISV Software Licenses Used

ISV Software Licenses Resources
	ISV Software Licenses Used (Hours)	Fraction of Usage*2(%)
ISV Software Licenses (Total)	0.00	0.00

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.