[Ips-dsgr] IPS Daily Report - 01 August 07
rwc
rwc at ips.gov.au
Thu Aug 2 09:26:13 EST 2007
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 01/2330Z AUGUST 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 AUGUST AND FORECAST FOR 02 AUGUST - 04 AUGUST
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 01 Aug: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Aug: 68/2
1B. SOLAR FORECAST
02 Aug 03 Aug 04 Aug
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 70/5 70/5 70/5
COMMENT: Solar wind speed has increased to approximately 610km/s
as expected due to small coronal hole and is expected to begin
to decrease midway through the UT day. The Bz component of the
interplanetary magnetic field fluctuated between +/- 6 nT over
the last 24 hours with neither the southward or northward orientation
dominating.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Aug: Unsettled to active
Estimated Indices 01 Aug : A K
Australian Region 13 33333322
Darwin 12 23333322
Townsville 14 33433322
Learmonth 19 4344--23
Camden 12 32333322
Canberra 17 33444322
Hobart 16 32344332
Casey(Ant) 11 333322-2
Observed Regional daily pc3 Indices 01 Aug :
Darwin 0 (Quiet)
Townsville 2 (Quiet)
Learmonth 0 (Quiet)
Camden 32 (Quiet to unsettled)
Canberra 29 (Quiet to unsettled)
Hobart 63 (Active)
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 01 Aug : A
Fredericksburg 14
Planetary 15
Observed AFr/Ap Indices 31 Jul : A K
Fredericksburg 4
Planetary 6 1122 1112
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Aug 8 Quiet to Unsettled
03 Aug 6 Quiet
04 Aug 4 Quiet
COMMENT: Coronal hole effects on the geomagnetic field should
slowly dissipate during the UT day.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Aug Normal Normal Fair-poor
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Aug Normal Normal Normal-Fair
03 Aug Normal Normal Normal
04 Aug Normal Normal Normal
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Aug 1
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Enhanced by 10-15% during local day.
Depressed by 10-15% during local night.
Northern Australian Region:
Depressed by 10-15% during local day.
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed 10-20% over the UT day with periods
showing no trace on the ionograms.
Predicted Monthly T index for August: 9
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Aug 0 near predicted monthly values/depressed 10 to
20%
03 Aug 5 Near predicted monthly values
04 Aug 10 Near predicted monthly values
COMMENT: Noted isolated cases of sporadic E in the low latitudes,
particularly above Nuie and Norfolk Island.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 Jul
Daily Proton Fluence >1 MeV: 9.0E+05
Daily Proton Fluence >10 MeV: 1.6E+04
Daily Electron Fluence >2 MeV: 3.50E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 5%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 31 Jul
Speed: 541 km/sec Density: 0.6 p/cc Temp: 167000 K Bz: 0 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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