Cloud Aerosol Radiation Application Research

JAXA Supercomputer System Annual Report April 2016-March 2017

Report Number: R16E0095

Responsible Representative: Teruyuki Nakajima(Earth Observation Research Center)
Contact Information: Maki Kikuchi(kikuchi.maki@jaxa.jp)
Members: Naofumi Yoshida, Misao Yamamoto, Kazuhiro Sakamoto, Yukinori Arima
Subject Category: Space(Space utilization)

Abstract

Long-term process of cloud microphysics estimation from CloudSat satellite and CALIPSO satellite

Goal

To construct a climate dataset of cloud and atmospheric particles (aerosols) from CloudSat, CALIPSO and EarthCARE satellites and to deepen the understanding of the cloud behavior in the Earth system and the aerosol-cloud interaction, which induce the large uncertainties in the climate change prediction.

Objective

To construct a long-term dataset of cloud and atmospheric particles (aerosols) from CloudSat and CALIPSO satellites.

References and Links

N/A

Use of the Supercomputer

Long-term process

Necessity of the Supercomputer

For accelerating application research by speeding-up the long-term processes

Achievements of the Year

Long-term process of cloud microphysics estimation from CloudSat satellite and CALIPSO satellite has done twice.

target period : 90 months x 2set

number of data : 33097 x 2set

processing time : 32.5 hour x 2set

normal process time for one data : ~560 [sec]

Effective process time for one data by JSS2 (160 parallel process) : ~3.5 [sec]

→ 160 times faster by using JSS2 SORA-MA

Fig.1 shows the effective radius of ice as a major physical data of the output.

Fig.1:Effective radius of ice

Publications

N/A

Computational Information

Parallelization Methods: Serial
Process Parallelization Methods: n/a
Thread Parallelization Methods: n/a
Number of Processes: 160
Number of Threads per Process: 1
Number of Nodes Used: 10
Elapsed Time per Case (Hours): 32.5
Number of Cases: 2

Resources Used

Total Amount of Virtual Cost(Yen): 536,551

Breakdown List by Resources

Computational Resources
System Name	Amount of Core Time(core x hours)	Virtual Cost(Yen)
SORA-MA	320,264.59	526,755
SORA-PP	0.00	0
SORA-LM	0.00	0
SORA-TPP	0.00	0

SORA-FS File System Resources
File System Name	Storage assigned(GiB)	Virtual Cost(Yen)
/home	15.89	45
/data	158.95	453
/ltmp	3,255.21	9,297

J-SPACE Archiving System Resources
Archiving System Name	Storage used(TiB)	Virtual Cost(Yen)
J-SPACE	0.00	0

Note: Virtual Cost=amount of cost, using the unit price list of JAXA Facility Utilization program(2016)