B.V. Jackson

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The Use of Worldwide IPS Systems to Determine 3-D
Velocities and Densities for Space Weather
(and Faraday rotation) Science
B.V. Jackson Center for Astrophysics and Space
Sciences, University of California at San Diego,
LaJolla, CA, USA
and M.M Bisi RAL Space, Science Technology
Facilities Council, Rutherford Appleton
Laboratory, Harwell Oxford, Didcot, Oxfordshire,
OX11 0QX, England (UK)
With help from
P.P. Hick, A. Buffington, H.-S. Yu, University of
California at San Diego, LaJolla, California,
United States
D. Odstrcil George Mason University, Fairfax,
Virginia, United States
M. Tokumaru Nagoya University, Japan
Masayoshi
http//smei.ucsd.edu/ http//ips.ucsd.edu/
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Introduction
Motive To show current progress using IPS
analysis and the intention to use this for
measurement of magnetic fields using Faraday
Rotation measurements. Data Sets/Analysis IPS
(mainly from STELab, Japan). Other worldwide
systems join. Speed and density
(scintillatio-level) observations from IPS.
3-D
Heliospheric Tomography (a fit to data a
time-dependent heliospheric view from a single
observer location). Applications Accurate
kinematic model predictions, 3D-MHD modeling,
Vector fields from Faraday rotation.
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Interplanetary Scintillation (IPS) Analysis
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IPS Heliospheric Analyses (STELab)
DATA
STELab IPS array near Mt. Fuji
STELab IPS array systems
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IPS Heliospheric Analyses (STELab)
DATA
IPS line-of-sight response
STELab IPS array systems
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Current STELab Toyokawa IPS System
New STELab IPS array in Toyokawa (3,432 m2 array
now operates well year-round operation began in
2011)
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Other Current Operating IPS Radio Systems
The Ootacamund (Ooty), India off-axis parabolic
cylinder 530 m long and 30 m wide (15,900 m2)
operating at a nominal frequency of 326.5 MHz.
The Pushchino Radio Observatory 70,000 m2 110 MHz
array, Russia (summer 2006) Now named the Big
Scanning Array of the Lebedev Physical Institute
(BSA LPI).
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Other and Potential Future IPS systems
MEXART (Mexico)
KSWC (South Korea)
Dedicated IPS 700 m2 327 MHz IPS radio 32 tile
array, Jeju Island
Dedicated IPS IPS 9,600 m2 140 MHz IPS radio
array near Michoacan, Mexico
MWA (Western Australia)
LOFAR (Western Europe)
(32 tiles are now operating. The full array 128
tiles can obtain some IPS data.)
(Some parts of the system are now operating -
Richard Fallows, Mario Bisi are involved. IPS/FR
tests are ongoing.)
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IPS line-of-sight response
Jackson, B.V., et al., 2008, Adv. in Geosciences,
21, 339-360.
Heliospheric C.A.T. analyses example
line-of-sight distribution for each sky location
to form the source surface of the 3D
reconstruction.
STELab IPS
Sample outward motion over time
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IPS line-of-sight response
Jackson, B.V., et al., 2008, Adv. in Geosciences,
21, 339-360.
Heliospheric C.A.T. analyses example
line-of-sight distribution for each sky location
to form the source surface of the 3D
reconstruction.
STELab IPS
13 July 2000
14 July 2000
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Current IPS Predictions
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Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
http//ips.ucsd.edu/
Prediction analyses
UCSD IPS analysis
UCSD Web pages
Web Analysis Runs Automatically Using Linux on a
P.C.
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Skymap view
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
UCSD IPS prediction analysis
Web analysis runs automatically using Linux on a
P.C.
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Skysweep view
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
UCSD IPS prediction analysis
Web analysis runs automatically using Linux on a
P.C.
15
Skymap view
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
UCSD IPS prediction analysis
Web analysis runs automatically using Linux on a
P.C.
16
Prediction analysis
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
Fit to ACE and CELIAS data
One CME just passed 2013/05/14 4-6 UT increase by
8 Np/cc
Web Analysis Runs Automatically Using Linux on a
P.C.
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Prediction analysis
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
Fit to ACE and CELIAS data
One CME just passed 2013/05/14 4-6 UT increase by
8 Np/cc
One CME just passed 2013/05/14 4-6 UT increase by
8 Np/cc
Web Analysis Runs Automatically Using Linux on a
P.C.
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Correlations (from UCSD forecast)
Jackson, B.V., et al., 2010, Solar Phys., 265,
245-256.
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
Pearsons r correlation coefficient
Five day behind forecast One
day ahead forecast
Velocity Density
Velocity Density
Velocity matched to ACE Density matched to
CELIAS
Remote velocity from STELab IPS three-site
Remote density from STELab IPS g-level
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Current Forecasts
UCSD KSWC
http//ips.ucsd.edu/
http//www.spaceweather.go.kr/models/ips
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More Details
Magnetic Field
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Zhao, X. P. and Hoeksema, J. T., 1995, J.
Geophys. Res., 100 (A1), 19.
http//ips.ucsd.edu/
Magnetic Field Extrapolation
Dunn et al., 2005, Solar Physics 227 339353.

1. Inner region the CSSS model calculates the
   magnetic field usingphotospheric measurements
   and a horizontal current model.

2. Middle region the CSSS model opens the field
lines. In the outer region.
3. Outer region the UCSD tomography convects the
magnetic field along velocity flow lines.
Jackson, B.V., et al., 2012, Adv. in Geosciences
(in press)
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Jackson, B.V., et al., 2012, Adv. in Geosciences,
(in press).
http//ips.ucsd.edu/ Earth
Radial and Tangential Magnetic Field
Web Analysis Runs Automatically Using Linux on a
P.C.
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Correlations (from UCSD forecast)
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
Pearsons r correlation coefficient
Five day behind forecast One
day ahead forecast
Bradial Btangential
Bradial Btangential
RTN coordinates
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More Details
Faraday Rotation
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F ?2 ? neBds

• 3-D reconstructions of Carrington rotation (CR)
  2121 showing a CME of interest from 07 March 2012
  launched around 0100UT.

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F ?2 ? neBds

• The same period extracted from CR2121 comparing
  IPS g-level fisheye sky map (left) with that of
  reconstructed RM from ambient magnetic fields
  (right) perturbed by the CME.

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Oberoi and Lonsdale, 2012, Radio Science, 47,
RS0K08, doi10.1029/2012RS004992.
Faraday rotation signals at low frequency
F ?2 ? neBds
From Oberoi and Lonsdale
Heliospheric Signal
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Towards
a More Comprehensive Model
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(Yu, H-S., et al., 2012, AIP Conference Proc.
1500, pp. 147-152.)
(Jackson, B.V., et al., 2014, Space Weather,
submitted)
IPS-Derived 3D-MHD Model Boundaries
Updated every 6 hours at ftp//cass185.ucsd.edu/d
ata/IPSBD_Real_Time/ENLIL/ascii_data
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(Yu, H-S., et al., 2012, AIP Conference Proc.
1500, pp. 147-152.)
(Jackson, B.V., et al., 2014, Space Weather,
submitted)
IPS Boundaries used to drive ENLIL in Real Time
ENLIL run daily on a GMU test site by Dusan
Odstrcil. See http//helioweather.net//models/i
psbd-enlil/density/2
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Summary
IPS analysis This ground-based technique can
provide low-resolution velocity and density
analysis, and accurate forecasts of time-variable
heliospheric structure. Other ground-based
analyses such as heliospheric Faraday rotation
can possibly be provided from the same radio
systems. The IPS analysis can provide input to
3D-MHD models. Better, and more abundant IPS
data, should be available from world IPS systems
in the near future.
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Prediction analysis from yesterday
http//ips.ucsd.edu/
Jackson, B.V., et al., 2011, Adv. in Geosciences,
30, 93-115.
Fit to ACE and CELIAS data
Web Analysis Runs Automatically Using Linux on a
P.C.
33
(Yu, H-S., et al., 2012, AIP Conference Proc.
1500, pp. 147-152.)
(Jackson, B.V., et al., 2014, Space Weather,
submitted)
IPS- ENLIL Prediction analysis from yesterday
ENLIL run daily on a GMU test site by Dusan
Odstrcil. See http//helioweather.net//models/i
psbd-enlil/density/2