Site ReportKorean IPS system at KSWC

2013. 11. 23.

Jung-Hoon Kim & Jincheol No (SETsystem, Inc.)

IPS SYSTEM

Korean IPS array is deployed at KSWC in Jeju Island, Korea

Korean IPS Array

Antenna• Crossed Dipole with LNA• Center Freq: 327MHz

Tile• 24 dipole on 1 tile• Beam former

Node

• 4 tiles = 1 node• Node box• A/D conversion and GPS clock sync.

Whole system

• Total 768 antennas on 32 tiles with control and data processing system

Node (4 tiles makes 1 node)

Crossed-dipole AntennaTile (24 dipoles with reflecting

mesh)

Whole system

4

System Specification• 32 tiles deployed over 250 x 250 m2 (1tile=24 dipole antennas)• Frequency range : 327 MHz• Instantaneous bandwidth : 10 MHz• Continuum and spectrum modes• Dual polarization• Field of view : ~(1 rad)2 or (10 deg.)2 depending on observation mode• Beam size (angular resolution) : ~15’• Effective collecting area : ~ 700 m2

• Receiver temperature : ~100 K• Point source sensitivity : 10 mJy @ 100 seconds integration• Time resolution : 1ms or less• Observing modes

– Phased array mode for solar wind monitoring– Interferometer mode for radio sky imaging– Both modes for variable objects

5

Tile (Antenna + Reflector)

Reflecting plane can be rotated along N-S direction to increase the sky coverage

6

System Diagram

AntennAntennaa

TileTile

NodeNode

Control/Control/ProcessiProcessi

ngng

7

Staffs for Model run• Total 8 staffs working for ENLIL and IPS model run

(4 operators designated to model running and forecasting)

Forecasting Division Model Operator

Lee, J.H.

Kwon, H.J.

Park, S.R.

Yun, J.H.

ENLIL and IPS model run / forecast

IPS MODEL

History

IPS international collaboration

USIPS model

USIPS model

India(Ooty)India

(Ooty)

Mexico(MEXART)

Mexico(MEXART)

Japan(STELAB

)

Japan(STELAB

)

Korea(KSWC

)

Korea(KSWC

)

•MOU (2012.08)•Model implementation

•MOU (2012.12)•Data and research collaboration

•Data and research collaboration

•Model and Data

•IPS data•Solar wind/CME research

-International collaboration with IPS model (UCSD) and observational data

KSWC IPS System layout

- Use ACE solar wind data, IPS observation, NSO magnetogram for model run- IPS Observational data are from Japan, Korea, India and Mexico

ACE Level 0(NOAA FTP)ACE Level 0(NOAA FTP)

NSO자기장 데이터

NSO자기장 데이터

Data dir.

IPS model runIPS model runWeb

visualization

Basic Data KSWC IPS model Web

Scripts for data acquisition

IPS Data(KSWC, Nagoya,)

IPS Data(KSWC, Nagoya,)

Output image

Image generationIDL, Fortran

* From UCSD ftp

H/W specification

  IPS-server-1 IPS-server-2

Vender/Model # IBM / X3250 M4

CPU INTEL Xeon E3-1220 3.1GHz

MEMORY 4GB(1x4GB) PC3-10600 CL9 ECC DDR3 1333MHz LP UDIMM

Power 1 x 300W Power Supply

HDD 2 x 500GB 7200 SATA 3.5”SS

ODD UltraSlim Enhanced SATA combo

Storage none

OS CentOS 6.4 64bit

S/W configuration

  Installed program Function

Server systemconfiguration

g95 Fortran CompilerFortran compiler

(IPS Tomography source compile)

Semi Library IPS Tomography library

Python Program control

IDL Image processing and display

Model Ipstd_20n_inp_mag Main program

Required scripts

Automatic data acquisition ACE, STEL, NSO data acquisition

Scripts for IPS tomography model running

Control the model run

IPS Tomography image script IPS Tomography image acquisition

Model parameter scriptModify the parameter of

tomography

KSWC IPS model output

- Run the IPS model everyday at 02:00 UT (11:00 KST)

Enlarge with animation

RECENT WORKS WITH MODELS

IPS model

• Standard IPS input data format for model run (Japan, Korea)

20130513065700 0 58.01139 126.295639 1.10979962484 0.0 0.0 0.0 1.01039958 338.3592562 338.3592562 --- 0.0 8.0 20130513 18.3945441966 0.0 ---- 13.5 -0.04178885858 -0.0422301012404 2251p16 5.11589532755 5.11630763006 1 20130513073934 IPS_JEJU -24.951171875 512 58.8 20130513065700 512 24.853515625

1759+13 130102 2.09 0.61 50 16 45 334 2132 -999-999 1.05766 17 59 22 +13 51 17 18 01 39 +13 51 191819-096 130102 2.44 0.25 65 53 58 7 2131 -999-999 1.33069 18 19 44 -09 40 29 18 22 29 -09 38 57

KSWC format

Japan STELAB format

Make a standard format from each IPS telescope and use as model input

• Model run test with hybrid data (Nagoya + KSWC)

STELAB data STELAB + KSWC data

Compare the result of ENLIL & IPS

• Synchronize the model output results and compare two models• 7 days (-2/+5) prediction results, 6 hours cadence

Comparison results of ENLIL, IPS, ACE19

NOAA ENLIL KSWC ENLIL IPS 　 ACE(12h average) ACE(1 h average)

V(bg) N(bg) Time V(bg) N(bg) TIme V(bg) N(bg) Time V(bg) N(bg) Time V(bg) N(bg)

Data not available

420(400) 10(3) 07/04 450(300) 9(2) 07/05 350(300) 10(2) 07/05 360(300) 25(1)

- - - - 7(2) 07/09 - 6(2) 07/09 410(300) 12(1)

360(300) 22(3) 07/14 450(300) 6(2) 07/15 400(300) 7(3) 07/15 380(300) 15(1)

- 12(2) 07/16 350(300) 7(2) 07/18 330(300) 7(2) 07/18 400(300) 10(1)

- 6(3) 07/26 - 7(2) 07/25 - 7(2) 07/25 360(300) 19(1)

390(370) 7(2) 08/03 350(300) 6(2) 08/04 - 7(2) 08/04 350(300) 20(2)

450(400) 5(2) 08/21 400(300) 7(1) 08/21 400(300) 7(1) 08/21 412(400) 18(2)

- - - 450(350) 5(1) 08/27 450(350) 5(1) 08/27 378(350) 19(2)

450(350) 14(3) 08/29 - 6(1) 08/30 - 5(1) 08/30 350(350) 12(1)

570(400) 16(0) 09/01 400(350) 6(2) 09/03 400(350) 6(2) 09/03 380(350) 13(2)

340(280) 14.4(4.6) 09/08 - 13(5) 09/07 - - 09/08 - 4(2) 09/08 370(350) 11(2)

338(310) 8.9(4.2) 09/11 - - - 350(350) 5(2) 09/10 350(350) 6(2) 09/10 360(350) 11(2)

361(340) 13.1(4.1) 09/12 - 8(3) 09/12 - 7(2) 09/12 - 7(2) 09/12 360(350) 11(2)

- - - - - - - 5(2) 09/17 - 6(2) 09/17 370(350) 15(2)

350(334) 10.9(5.5) 09/24 400(380) 15(5) 09/23 430(300) 6(1) 09/24 430(300) 8(1) 09/24 410(350) 17(2)

316(298) 15.2(5.0) 10/02 400(300) 40(3) 10/03 600(300) 6(1) 10/02 600(300) 7(1) 10/02 600(250) 17(1)

423(360) 22(5.5) 10/10 - 25(3) 10/10 530(250) 8(1) 10/08 560(250) 6(1) 10/08 470(250) 24(1)

: ENLEL only case, : IPS only case

• Color lines represent that only one model predicts the CME• This results shows that each models have their own advantage

Summary• KSWC have been operating two solar wind prediction models from 2013

ENLIL with CONE IPS

Start of model run at KSWC

Jan, 2013 May, 2013

Developer Dr. Dusan Odstricil Dr. Bernard V. Jackson

Computing infra 2 x IBM X3550 (4 GB ram) 2 x IBM X3250 M4 (4 GB ram)

Running time ~ 2.5 hours (every 4 hours) ~ 0.5 hours ( everyday)

Input data WSA with CME parameter IPS observation, NSO magnetogram

Output results Time cadence images and plots

Service Provide forecast result in animation via WEB(www.spaceweatehr.go.kr)

Manpower 8 people ( 4 staffs and 4 operators)

Summary

• Korean IPS system– For operational purpose

– Owned by KSWC which is government agency

–Maintained by SETsystem, Inc. which is system developer and contractor for operation

• To do– Data quality check, single site obs. use model

fitting technique

– Combine of the ENLIL and IPS model