JB2006

Indices
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New: Version 4_0h, Continuously Updated

Space Environment Technologies now produces an improved version of the JB2006 indices, which is updated daily (HTML only). It is also available as a data text file using the new SOLAR2000 (SIP) application from SET.

To run the JB2006 model, you will also need the geomagnetic indices.


Revision History:

v3.7: First release of indices with model (December 11 2006)
v3.8: Continuous daily updates to the indices (April 23, 2007)
v3.9: Solar S10 and M10 indices corrected for long-term degradation (July 6 2007)
v3.9a: - S10 and M10 are corrected for flares, consistency with original derivation,and long-term trend changes (October 14, 2007).
- S10 has been set to the original derivation values for the period January 1 1997 - August 15 2005.
- S10 starting August 16 2005 to the current epoch uses the v3.9 trend revision to achieve a geophysical solar minimum.
- S10 flare contaminated days (50) are replaced by spline data (see code value in the "Ssrc" column).
- M10 beginning late 1999 has a small divergence in the trend that grows through time. This is because the Mg II from NOAA 16 (used as the basis for M10) needed calibration for a long-term drift. The M10 values are now consistent for both solar minima (1996 and 2007). Daily relative variability is not affected.
v4.0h:
- M10 between 1991/285 and 2008/034 is final reference data (not calculated each update). (Mar 20 2008)
- M10 noise is added to low calculated values of 60. (Mar 20 2008)
- M10 formation is empirically corrected for NOAA16 offset by the multiplier 1.10 (Apr 5 2008)
- M10 formation is empirically corrected for NOAA16 slope by the multiplier 1.59 (Apr 5 2008)
- S10 between 1996/001 and 2008/034 s final reference data (not calculated each update). (Mar 18 2008)
- S10 and M10 are consistent between JB2006 and JB2008. (Aug 13 2008)


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