[Ips-dsgr] IPS Daily Report - 03 September 04
rwc
rwc at ips.gov.au
Sat Sep 4 09:45:23 EST 2004
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 03/2330Z SEPTEMBER 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 03 SEPTEMBER AND FORECAST FOR 04 SEPTEMBER - 06 SEPTEMBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 03 Sep: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 03 Sep: 97/44
1B. SOLAR FORECAST
04 Sep 05 Sep 06 Sep
Activity Low Low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 100/48 105/54 110/60
COMMENT: Halo CME events observed during 3 September appear to
be backside events and are not expected to be geoeffective. Solar
wind velocity declined from 440 to 340km/sec over the UT day,
with the north-south component of the interplanetary magnetic
field near neutral. No signature of the mass ejection from the
M1-flare event on 31 August has been observed.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 03 Sep: Quiet
Estimated Indices 03 Sep : A K
Australian Region 2 1110 0111
Darwin 2 1100 1112
Townsville 2 1200 0112
Learmonth 1 1100 0111
Culgoora 2 1110 0111
Canberra 1 1100 0102
Hobart 2 2110 0101
Casey(Ant) 6 3321 0110
Observed Regional daily pc3 Indices 03 SEP :
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Culgoora 5 (Quiet)
Canberra 19 (Quiet)
Hobart 18 (Quiet)
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 Sep : A
Fredericksburg 6
Planetary 8
Observed AFr/Ap Indices 02 Sep : A K
Fredericksburg 8
Planetary 9 2233 2223
2B. MAGNETIC FORECAST
Date Ap Conditions
04 Sep 10 Quiet to Unsettled
05 Sep 8 Quiet to Unsettled
06 Sep 6 Quiet
COMMENT: Halo CME events observed during 3 September are not
expected to be geoeffective. Mostly quiet to unsettled conditions
expected for the next few days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
03 Sep Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
04 Sep Normal Normal Normal-Fair
05 Sep Normal Normal Normal-Fair
06 Sep Normal Normal Normal
COMMENT: Mild degradation possible at high latitudes. Generally
good HF conditions expected at mid latitudes.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
03 Sep 42
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base):
Mostly near predicted monthly values.
Predicted Monthly T index for September: 38
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
04 Sep 40 near predicted monthly values
05 Sep 40 Near predicted monthly values
06 Sep 40 Near predicted monthly values
COMMENT: Mostly normal conditions expected for the next few days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 02 Sep
Daily Proton Fluence >1 MeV: 3.1E+05
Daily Proton Fluence >10 MeV: 1.3E+04
Daily Electron Fluence >2 MeV: 1.10E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:11%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B1.9
ACE Satellite Solar Wind Day Averaged Data for 02 Sep
Speed: 463 km/sec Density: 1.4 p/cc Temp: 82600 K Bz: 1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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