Viewing archive of Wednesday, 18 June 2003

Geophysical report

Joint USAF/NOAA Solar and Geophysical Activity Summary

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
2144 2153 2158  0386 S07E55 C5.2  1f        140
2227 2255 2312  0386        M6.8     1200   2100   II/IV

B. Proton Events

C. Geomagnetic Activity Summary

D. Stratwarm

E. Daily Indices: (real-time preliminary/estimated values)

10 cm 122  SSN 080  Afr/Ap 040/050   X-ray Background B2.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.9e+05   GT 10 MeV 1.8e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W127 degrees)
Daily Electron Fluence
GT 2 MeV 8.00e+06 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W76 degrees)
3 Hour K-indices
Boulder 5 5 6 5 4 4 3 4 Planetary 5 6 6 6 4 4 4 4

F. Comments

  K-Indices:
On 16 June, it was determined that a scaling problem exists with the
H-trace on the Boulder magnetometer instrument.  While this problem,
and its fix are being investigated the primary instrument for
Boulder K-indices has been switched to the Boulder USGS (via Domsat)
magnetometer, effective 1500 UTC on 16 June.

GOES Protons:
To ensure continued operational monitoring of important energetic
particle data, it is necessary to reassign primary/secondary
designations for the GOES Space Environment Monitor (SEM) detectors.
Beginning 1700 UTC on June 18, GOES 11 (105W) will become the
primary satellite for protons. GOES 12 will continue as the primary
satellite for magnetometer, X-ray, and electron measurements. GOES
10 (135W) will be the secondary satellite for all SEM sensors -
magnetometer, X-ray, and energetic particles.  Because of the
degraded state of the proton data on GOES-10, its designation as the
secondary source for proton data is a short-term solution.  More
permanent solutions have been identified and are being evaluated.
Users will be notified when we define and schedule a permanent fix.
Further details can be found at http://www.sec.noaa.gov/GOES.html.

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