[Ips-dsgr] IPS Daily Report - 03 February 04
rwc
rwc at ips.gov.au
Wed Feb 4 09:25:37 EST 2004
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 03/2330Z FEBRUARY 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 03 FEBRUARY AND FORECAST FOR 04 FEBRUARY - 06 FEBRUARY
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: **YELLOW**
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1A. SOLAR SUMMARY
Activity 03 Feb: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 03 Feb: 120/72
1B. SOLAR FORECAST
04 Feb 05 Feb 06 Feb
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 105/54 105/54 105/54
COMMENT: Solar wind speed was at around 600km/sec over the UT
day. Elevated solar wind speed due to coronal hole wind stream.
27 day recurrence patterns suggest elevated wind speed conditions
may persist up to 06/07 Feb. The north-south component of the
interplanetary magnetic field fluctuated southward by up to 5nT
at times during the UT day. Isolated low level flare activity
possible.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 03 Feb: Unsettled to Active
Estimated Indices 03 Feb : A K
Australian Region 20 3443 3432
Darwin 16 3333 4333
Townsville 16 3333 3433
Learmonth 21 3333 4532
Culgoora 15 3333 3332
Canberra 20 3443 3432
Hobart 19 3443 3422
Casey(Ant) 29 4554 3433
Observed Regional daily pc3 Indices 03 FEB :
Townsville 0 (Quiet)
Learmonth 19 (Quiet)
Culgoora 55 (Unsettled)
Canberra 89 (Minor storm)
Hobart 94 (Minor storm)
Pc3 pulsations are high frequency (10-45 second period) variations
of the Earths magnetic field. Daily pc3 indices are the daily sum
of 20 minute pc3 indices for that station.
Estimated AFr/Ap Indices 03 Feb : A
Fredericksburg 15
Planetary 18
Observed AFr/Ap Indices 02 Feb : A K
Fredericksburg 28
Planetary 21 2154 4433
2B. MAGNETIC FORECAST
Date Ap Conditions
04 Feb 16 Unsettled to active
05 Feb 16 Unsettled to active
06 Feb 16 Unsettled to Active
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
03 Feb Normal Fair-normal Fair-normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
04 Feb Normal Normal-Fair Fair
05 Feb Normal Normal-Fair Fair
06 Feb Normal Normal-Fair Fair
COMMENT: Mild degradation in HF communications quality expected
at mid to high latitudes due to activity induced by solar coronal
hole wind stream.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
03 Feb 56
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 15% during local day,
Enhanced by 40% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
Predicted Monthly T index for February: 53
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
04 Feb 50 depressed 10 to 15%/near predicted monthly values
05 Feb 50 depressed 10 to 15%/near predicted monthly values
06 Feb 50 depressed 10 to 15%/near predicted monthly values
COMMENT: Mild depressions probable briefly after local dawn for
southern Aus/NZ regions over next few days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 02 Feb
Daily Proton Fluence >1 MeV: 1.0E+06
Daily Proton Fluence >10 MeV: 1.2E+04
Daily Electron Fluence >2 MeV: 5.50E+07 (normal)
X-ray background: B1.6
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 02 Feb
Speed: 565 km/sec Density: 5.1 p/cc Temp: 114000 K Bz: 0 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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