[Ips-dsgr] IPS Daily Report - 01 October 04
rwc
rwc at ips.gov.au
Sat Oct 2 09:24:10 EST 2004
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 01/2330Z OCTOBER 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 OCTOBER AND FORECAST FOR 02 OCTOBER - 04 OCTOBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 01 Oct: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Oct: 88/32
1B. SOLAR FORECAST
02 Oct 03 Oct 04 Oct
Activity Very low Very low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 90/34 95/41 95/41
COMMENT: Solar activity was very low over the last 24 hrs. The
solar wind velocity continued to fall from 360km/s at 0000UT
to 340km/s at the time of this report. The north south component
of the interplanetary magnetic field (Bz) fluctuated between
4nT and -2nT throughout the UT day. These conditions are expected
to continue for the next two days with no observed growth or
increase in magnetic complexity of any of the current solar regions
on disc.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Oct: Quiet
Estimated Indices 01 Oct : A K
Australian Region 2 1111 0112
Darwin 3 1111 1113
Townsville 3 1111 1112
Learmonth 1 0101 0112
Culgoora 2 1111 0012
Canberra 2 0111 0022
Hobart 1 0101 0111
Casey(Ant) 7 2332 0112
Observed Regional daily pc3 Indices 01 OCT :
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Culgoora 0 (Quiet)
Canberra 18 (Quiet)
Hobart 22 (Quiet to unsettled)
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 01 Oct : A
Fredericksburg 3
Planetary 5
Observed AFr/Ap Indices 30 Sep : A K
Fredericksburg 2
Planetary 4 2100 1222
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Oct 7 Quiet to unsettled
03 Oct 7 Quiet to unsettled
04 Oct 7 Quiet to unsettled
COMMENT: Quiet conditions observed over the last 24 hours. These
conditions are expected to continue for the next 2 days with
possible isolated Unsettled periods.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Oct Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Oct Normal Normal Normal
03 Oct Normal Normal Normal
04 Oct Normal Normal Normal
COMMENT: Slightly enhanced conditions for mid to high latitudes
observed over the past 24 hours. Conditions expected to be mostly
normal for all regions over the next few days.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Oct 48
Observed Australian Regional MUFs
Equatorial PNG Region:
Near predicted monthly values during local day,
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 35% during local night.
Antarctic Region (Casey/Scott Base):
Enhanced by 20% over the UT day.
Predicted Monthly T index for October: 36
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Oct 45 near predicted monthly values
03 Oct 45 near predicted monthly values
04 Oct 45 near predicted monthly values
COMMENT: Normal conditions observed for all regions with slight
enhancements observed for the Southern AUS/NZ regions during
local night. Normal HF conditions are expected over the next
few days over all regions, with the continued chance of periods
of enhanced conditions at mid to high latitudes.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 30 Sep
Daily Proton Fluence >1 MeV: 5.7E+05
Daily Proton Fluence >10 MeV: 1.4E+04
Daily Electron Fluence >2 MeV: 1.30E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 2%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A5.4
ACE Satellite Solar Wind Day Averaged Data for 30 Sep
Speed: 374 km/sec Density: 5.4 p/cc Temp: 51900 K Bz: 1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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