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Plotted on this page are data from the 'active' real-time solar wind spacecraft. Since July 27, 2016 NOAA's Deep Space Climate Observatory (DSCOVR (link is external)) has been the operational spacecraft. Only magnetometer and solar wind thermal plasma data are displayed.
The two DSCOVR instruments for which data are available:
An inverse chronological list of Real-Time Solar Wind Announcements
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The Faraday Cup Data Processing Unit (IDPU) experienced two recent interrupts that resulted in data outages. These were the first times this occurred in the life of the mission.
Nov 06, 2017 17:49 UT
Nov 28, 2017 03:26 UT
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October 10, 2017: Safe Hold #14
DSCOVR had its 14th safe hold event today. All of the safehold events so far are listed below.
Safehold # / Date
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1 / Jun 23, 2015
2 / Jun 28, 2015
3 / Jul 15, 2015
4 / Aug 04, 2015
5 / Sep 29, 2015
6 / Oct 08, 2015
7 / Jan 06, 2016
8 / Jan 14, 2016
9 / May 24, 2016
10 / Sep 17, 2016
11 / Oct 11, 2016
12 / Oct 30, 2016
13 / Aug 24, 2017
14 / Oct 10, 2017
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October 2, 2017 13:59 UT
Changes were made to the Faraday Cup flight software to alter the behavior of the instrument. Essentially, the instrument now waits longer between scans to reduce the impact of spurious noise that was causing the instrument to lose the solar wind proton peak. This change may not eliminate the loss of peak tracking issue completely, but it is a significant step in the right direction.
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October 27, 2016 17:26 UT
A change was made to the Faraday Cup processing to remove some of the noise that was resulting in higher than expected densities and temperature. The change ignores high energy noise that was resulting in wider than expected velocity distributions.
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July 27, 2016
NOAA's Deep Space Climate Observatory (DSCOVR) became the operational RTSW spacecraft. It replaced the NASA Advanced Composition Explorer (ACE) spacecraft, which has been in use since 1998.
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Real-time Solar Wind and Magnetometer data is now available in JSON format for up to the past 7 days from the SWPC Data Service. These JSON files will automatically include the data from the active RTSW spacecraft. By default, that has been DSCOVR since July 27 at 1600 UT.
A complete DSCOVR data archive is available at the NOAA National Center for Environmental Information.