[Ips-dsgr] IPS Daily Report - 26 September 08
rwc
rwc at ips.gov.au
Sat Sep 27 09:44:08 EST 2008
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 26/2330Z SEPTEMBER 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 26 SEPTEMBER AND FORECAST FOR 27 SEPTEMBER - 29 SEPTEMBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 26 Sep: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 26 Sep: 68/2
1B. SOLAR FORECAST
27 Sep 28 Sep 29 Sep
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 66/0 66/0 66/0
COMMENT: The visible solar disk is presently spotless. Solar
wind speeds were predominantly below 350 km/s during the past
24 hours with the IMF NS-component ranging between +/- 4nT.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 26 Sep: Quiet
Estimated Indices 26 Sep : A K
Australian Region 3 22101101
Darwin 3 22101102
Townsville 6 22122222
Learmonth 3 22101101
Camden 2 21101001
Canberra 2 21001001
Hobart 2 11101101
Casey(Ant) 7 33311101
Observed Regional daily pc3 Indices 26 Sep :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice_Springs 0 (Quiet)
Camden 0 (Quiet)
Gnangara 0 (Quiet)
Canberra 7 (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 26 Sep : A
Fredericksburg 3
Planetary 5
Observed AFr/Ap Indices 25 Sep : A K
Fredericksburg 1
Planetary 4 0000 1133
2B. MAGNETIC FORECAST
Date Ap Conditions
27 Sep 4 Quiet
28 Sep 4 Quiet
29 Sep 4 Quiet
COMMENT: Mostly quiet conditions are expected for the next few
days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
26 Sep Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
27 Sep Normal Normal Normal
28 Sep Normal Normal Normal
29 Sep Normal Normal Normal
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
26 Sep 2
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Depressed by 25% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Predicted Monthly T index for September: 2
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
27 Sep 0 near predicted monthly values
28 Sep 0 near predicted monthly values
29 Sep 0 near predicted monthly values
COMMENT: Mild depressions in MUFs were observed at times for
northern-equatorial regions, otherwise MUFs were mostly near
predicted monthly values during the past 24 hours. Similar HF
conditions are expected for the next few days, with isolated
depressions of 10-20% possible at times for northern-equatorial
regions only. Spread-F and Sporadic-E conditions were observed
at times at some stations during the past 24 hours.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 25 Sep
Daily Proton Fluence >1 MeV: 6.7E+05
Daily Proton Fluence >10 MeV: 1.9E+04
Daily Electron Fluence >2 MeV: 4.50E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 25 Sep
Speed: NA km/sec Density: NA p/cc Temp: NA K Bz: NA 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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