[Ips-dsgr] IPS Daily Report - 29 May 07
rwc
rwc at ips.gov.au
Wed May 30 09:35:04 EST 2007
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 29/2330Z MAY 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 29 MAY AND FORECAST FOR 30 MAY - 01 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 29 May: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 29 May: 70/5
1B. SOLAR FORECAST
30 May 31 May 01 Jun
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 activity was very low over the past 24 hours.
Solar wind speed returned to normal levels following the recent
influence of a coronal hole region. Bz, the north/south component
of the IMF, fluctuated between +/- 2 nT.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 29 May: Quiet
Estimated Indices 29 May : A K
Australian Region 3 11112111
Darwin 5 21112--2
Townsville 7 22222222
Learmonth 5 12113111
Camden 2 01102-01
Canberra 2 01102001
Hobart 2 11102001
Casey(Ant) 5 22212111
Observed Regional daily pc3 Indices 29 May :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Camden 18 (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 29 May : A
Fredericksburg 3
Planetary 5
Observed AFr/Ap Indices 28 May : A K
Fredericksburg 5
Planetary 5 3211 1001
2B. MAGNETIC FORECAST
Date Ap Conditions
30 May 5 Quiet
31 May 5 Quiet
01 Jun 5 Quiet
COMMENT: The geomagnetic field was at Quiet levels throughout
the UT day.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
29 May Fair-normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
30 May Fair-normal Normal Normal
31 May Normal Normal Normal
01 Jun Normal Normal Normal
COMMENT: Usable frequencies were depressed during daylight hours
at low latitudes.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
29 May 0
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Depressed by 20% during local day,
Depressed by 30% during local night.
Northern Australian Region:
Depressed by 20% 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):
Near predicted monthly values over the UT day.
Predicted Monthly T index for May: 9
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
30 May 4 Depressed by 20% during local day Equatorial
PNG/Niue and Northern Australian regions. Otherwise
near predicted values.
31 May 5 Depressed by 20% during local day Equatorial
PNG/Niue and Northern Australian regions. Otherwise
near predicted values.
01 Jun 9 near predicted monthly values
COMMENT: Usable frequencies were depressed during local daylight
hours in Equatorial PNG/Niue and Northern Australian regions.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 28 May
Daily Proton Fluence >1 MeV: 3.5E+06
Daily Proton Fluence >10 MeV: 1.6E+04
Daily Electron Fluence >2 MeV: 9.90E+08 (high fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:30%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 28 May
Speed: 547 km/sec Density: 0.5 p/cc Temp: 78200 K Bz: 0 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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PO Box 1386 WWW: http://www.ips.gov.au
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