[Ips-dsgr] IPS Daily Report - 27 September 03
rwc
rwc at ips.gov.au
Sun Sep 28 09:49:03 EST 2003
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 27/2330Z SEPTEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 27 SEPTEMBER AND FORECAST FOR 28 SEPTEMBER - 30 SEPTEMBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 27 Sep: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 27 Sep: 130/84
1B. SOLAR FORECAST
28 Sep 29 Sep 30 Sep
Activity Low Low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 130/84 125/78 125/78
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 27 Sep: Quiet to Unsettled
Estimated Indices 27 Sep : A K
Australian Region 2 2111 0013
Darwin 5 -2-- 1124
Townsville 3 2111 0024
Learmonth 2 2111 0013
Canberra 2 2101 0013
Hobart 2 2111 0012
Casey(Ant) 5 3--2 0013
Observed Regional daily pc3 Indices 27 SEP :
Townsville 0 (Quiet)
Learmonth 2 (Quiet)
Canberra 24 (Quiet to unsettled)
Hobart 24 (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 27 Sep : A
Fredericksburg 12
Planetary 15
Observed AFr/Ap Indices 26 Sep : A K
Fredericksburg 11
Planetary 17 3344 3333
2B. MAGNETIC FORECAST
Date Ap Conditions
28 Sep 12 Unsettled
29 Sep 8 Quiet to Unsettled
30 Sep 8 Quiet to Unsettled
COMMENT: Solar wind parameters indicate coronal hole effects
continue to decline and mostly quiet to unsettled conditions
are expected for the next few days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
27 Sep Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
28 Sep Normal Normal Normal-Fair
29 Sep Normal Normal Normal-Fair
30 Sep Normal Normal Normal-Fair
COMMENT: Mostly normal conditions are expected for the next few
days.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
27 Sep 87
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 45% during local day,
Enhanced by 70% during local night.
Enhanced by 20% after local dawn.
Northern Australian Region:
Enhanced by 30% during local day,
Enhanced by 65% during local night.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Enhanced by 20% after local dawn.
Antarctic Region (Casey/Scott Base):
Mostly near predicted monthly values.
Predicted Monthly T index for September: 57
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
28 Sep 80 5 to 15% above predicted monthly values
29 Sep 80 5 to 15% above predicted monthly values
30 Sep 80 5 to 15% above predicted monthly values
COMMENT: Mostly normal conditions are expected for the next few
days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 26 Sep
Daily Proton Fluence >1 MeV: 1.8E+06
Daily Proton Fluence >10 MeV: 1.2E+04
Daily Electron Fluence >2 MeV: 4.50E+08 (moderate)
X-ray background: B3.4
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 26 Sep
Speed: 582 km/sec Density: 3.1 p/cc Temp: 113000 K Bz: -1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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