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The following is an excerpt from the:
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* * * AMERICAN GEOPHYSICAL UNION .
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* ********* * SPA SECTION NEWSLETTER . ..
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* * *********** * * Volume III, Issue 66 . o .
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* ********* * 11 September 1996 . ..
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* * * Editor: Guan Le .
* * * Email: editor@igpp.ucla.edu . . . . . . .
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Table of Contents
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1. OnLine Solar Wind Data Now Available From SOHO
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From: Fred Ipavich (ipavich@umtof.umd.edu)
We have recently established a WWW page for accessing close-to-realtime
solar wind data obtained from the Proton Monitor (PM) on the SOHO spacecraft.
SOHO is never in the magnetosphere and enjoys excellent data coverage. The
data on the Web page are typically between a few minutes and a few hours old.
If you would like to visit, the URL is:
http://umtof.umd.edu/pm
The PM is a subsensor of the MTOF instrument, which is one of the 3
time-of-flight instruments comprising the CELIAS experiment. MTOF determines
high resolution mass spectra of heavy solar wind ions and uses a very wide
bandwidth energy-per-charge analyzer to maximize counting statistics. The PM
was designed to assist in the interpretation of MTOF data and for that reason
uses a similar wide bandwidth analyzer that limits the accuracy of derived
solar wind parameters. A preliminary comparison of PM parameters with those
derived from the SWE instrument on the WIND spacecraft (courtesy K. Ogilvie
and A. Lazarus) results in the following values for the sigma of the
distribution of the ratios of parameters derived by the 2 instruments:
proton bulk speed < 5%, density < 20%, thermal speed < 40%.