Introduction to data for JOP 112 Quadrature observations, 5-18 June 2000.
Steve Suess, 31 January 2001.
For use by the participants in JOP 112
Go to Ulysses SWOOPS data Go up to projections of Ulysses footpoint onto LASCO C2 images
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Wilcox Solar Observatory
   Photospheric Magnetic Field &
      Source Surface Magnetic Field Data
  The top two panels show the Wilcox Solar Observatory photospheric line-of-sight magnetic field data for Carrington rotations 1962, 1963, and 1964, covering times of observation from 18 April 2000 11 July 2000. 
   The footpoint of Ulysses on 5-18 June 2000 is shown in red on the second and third panels. 
   The Ulysses footprint lies in a unipolar region at the beginning and in a mixed polarity region at the end. To understand what this implies, look at the source surface magnetic field plots below. 

   This data was obtained from the Solar Geophysical Data web page. 
 The top two panels below show the Wilcox Solar Observatory source surface (2.5 RSUN) model magnetic field for Carrington rotations 1962, 1963, and 1964, covering times of observation from 18 April 2000 11 July 2000. 
   The Ulysses footprint falls in a distinctly unipolar magnetic field region at the beginning, consistent with the implications from the LASCO/C2 and SWOOPS data implying there was a coronal hole. 
   From 15 June 2000 onward the Ulysses footprint lies on the streamer belt. This is also consistent with what was seen in LASCO/C2 and SWOOPS data. 

 

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