[Ips-dsgr] IPS Daily Report - 27 August 08
rwc
rwc at ips.gov.au
Thu Aug 28 09:11:10 EST 2008
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 27/2330Z AUGUST 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 27 AUGUST AND FORECAST FOR 28 AUGUST - 30 AUGUST
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 27 Aug: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 27 Aug: 67/0
1B. SOLAR FORECAST
28 Aug 29 Aug 30 Aug
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 67/0 67/0 67/0
COMMENT: No active regions or coronal holes on the visible solar
disk. Solar wind remains slow. Some minor fluctuations in IMF
flagged 26 Aug had little effect.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 27 Aug: Quiet
Estimated Indices 27 Aug : A K
Australian Region 3 22111011
Darwin 3 22011011
Townsville 5 22211122
Learmonth 1 11010001
Camden 0 11000000
Canberra 0 11000000
Hobart 3 31102001
Casey(Ant) 6 23311011
Observed Regional daily pc3 Indices 27 Aug :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice_Springs 0 (Quiet)
Camden 4 (Quiet)
Gnangara 0 (Quiet)
Canberra 0 (Quiet)
Hobart 0 (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 and have been shown to be
well correlated with rejection of high resolution aeromagnetic
survey flight-line data.
NOTE: Indices may have been generated from data obtained in
cooperation with the following organisations: Geoscience Australia,
University of Newcastle Space Physics Group, Australian Government
Antarctic Division and Space Environment Research Center, Japan.
Estimated AFr/Ap Indices 27 Aug : A
Fredericksburg 5
Planetary 4
Observed AFr/Ap Indices 26 Aug : A K
Fredericksburg 1
Planetary 3 1000 2112
2B. MAGNETIC FORECAST
Date Ap Conditions
28 Aug 3 Quiet
29 Aug 3 Quiet
30 Aug 3 Quiet
COMMENT: The geomagnetic field was quiet over the UT day. Some
minor IMF fluctuations early in the UT day had little effect
on the geomagnetic field. Expect Quiet conditions next three
days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
27 Aug Normal-fair Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
28 Aug Normal Normal Normal
29 Aug Normal Normal Normal
30 Aug Normal Normal Normal
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
27 Aug -2
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Depressed by 20% after local dawn.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 30% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 25% over the UT day.
Predicted Monthly T index for August: 2
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
28 Aug -5 Near predicted monthly values
29 Aug -5 Near predicted monthly values
30 Aug -5 Near predicted monthly values
COMMENT: Ionospheric conditions were mostly normal over the UT
day with variable depressions at some stations in the Equatorial/N
Aus regions. Expect mostly normal conditions next three days
with continuing variable depressions in the Equatorial/N Aus
region.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 26 Aug
Daily Proton Fluence >1 MeV: 1.3E+06
Daily Proton Fluence >10 MeV: 1.9E+04
Daily Electron Fluence >2 MeV: 7.70E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 9%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 26 Aug
Speed: 294 km/sec Density: 4.5 p/cc Temp: 34000 K Bz: 1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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