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Utilization of JSS2 for AMSR-E higher level data processing

JAXA Supercomputer System Annual Report April 2019-March 2020

Report Number: R19ER1501

Subject Category: Space Technology

PDF available here

  • Responsible Representative: Takeshi Hirabayashi, Derector of The Satellite Applications and Operation Center
  • Contact Information: Kazuaki Nonaka, JAXA(nonaka.kazuaki@jaxa.jp)
  • Members: Yuji Taniguchi, Masaya Torii, Tadahiro Yamamoto, Koki Ishimaru, Sachiko Kawase, Daichi Obinata, Kentaro Koyama, Makoto Imanaka, Kazuaki Nonaka, Junichi Tsukamoto, Kenji Shimizu, Katsunori Iijima, Shingo Yokoyama, Osamu Motohashi, Toshiyuki Konishi

Abstract

AMSR-E*1, AMSR2*2 estimates various geophysical parameters by measuring radio waves in the weak microwave band radiated from the Earth’s surface and the atmosphere with multiple frequencies and multiple polarizations.

Geophysical parameters include water vapor, cloud liquid water, precipitation, sea surface temperature, sea surface wind speed, sea ice concentration, snow water equivalent, and soil moisture.

The long-term geophysical record will play an important role in climate change monitoring and will provide valuable information for understanding the Earth’s climate system, including water and energy circulation.

We will reprocess and provide AMSR-E high level product and AMSR2 high level product with the same algorithm (including improved algorithms), and provide a long-term data set useful for users.

*1 : Advanced Microwave Scanning Radiometer for EOS equipped in Earth Observation Satellite ‘Aqua’

*2 : The Advanced Microwave Scanning Radiometer 2 equipped in Global Change Observation Mission – Water “SHIZUKU” (GCOM-W)

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

By using JSS2 with a large scalability processing environment and executing processing of enormous scenes in parallel, it becomes possible to provide products to users more quickly.

Achievements of the Year

Reprocessing for correction was carried out because there was an error in the version notation for some of the products generated by reprocessing last year (FY 2018).

Publications

N/A

Usage of JSS2

Computational Information

  • Process Parallelization Methods: N/A
  • Thread Parallelization Methods: N/A
  • Number of Processes: 1
  • Elapsed Time per Case: 3 Second(s)

Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.04

 

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name Amount of Core Time
(core x hours)
Fraction of Usage*2(%)
SORA-MA 0.00 0.00
SORA-PP 4,628.36 0.03
SORA-LM 0.00 0.00
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 133.06 0.11
/data 109,277.78 1.87
/ltmp 14,718.20 1.25

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 7.96 0.20

*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.

JAXA Supercomputer System Annual Report April 2019-March 2020