[Ips-dsgr] IPS Daily Report - 23 November 05
rwc
rwc at ips.gov.au
Thu Nov 24 10:05:31 EST 2005
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 23/2330Z NOVEMBER 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 23 NOVEMBER AND FORECAST FOR 24 NOVEMBER - 26 NOVEMBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 23 Nov: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 23 Nov: 90/34
1B. SOLAR FORECAST
24 Nov 25 Nov 26 Nov
Activity Low Low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 90/34 85/27 80/20
COMMENT: Background solar X-ray flux continues to slowly decline
as AR822 approaches the West limb. AR822 is quiescent, as is
AR823 preceding it on the west limb and AR824 trailing it on
the east limb. No significant flare activity today. The IMF has
been predominantly southwards from 02UT until a northward turning
at 13UT associared with a solar wind temperature increase observed
at the L1 point by ACE and a speed increase from 400 to 500km/sec.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 23 Nov: Quiet to Unsettled
Estimated Indices 23 Nov : A K
Australian Region 7 2232 2211
Darwin 6 2222 2212
Learmonth - ---- ----
Culgoora 5 2221 2111
Canberra 7 2232 2211
Hobart 7 2232 1211
Casey(Ant) 15 4442 2222
Observed Regional daily pc3 Indices 23 Nov :
Townsville NA
Learmonth 0 (Quiet)
Culgoora 0 (Quiet)
Canberra 6 (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.
Estimated AFr/Ap Indices 23 Nov : A
Fredericksburg 5
Planetary 9
Observed AFr/Ap Indices 22 Nov : A K
Fredericksburg 3
Planetary 6 0122 2222
2B. MAGNETIC FORECAST
Date Ap Conditions
24 Nov 6 Quiet
25 Nov 6 Quiet
26 Nov 6 Quiet
COMMENT: Solar IMF interplanetary magnetic field Bz was southwards
from 01-13UT favouring merging with the geomagnetic field and
enhancing high latitude magnetic activity. Merging did not last
long enough for the enhancement to spread from polar to mid latitudes.
IMF is currently near zero so quiescent conditions are expected
although an extended southward period will enhance high latitude
magnetic activity.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
23 Nov Normal Normal Fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
24 Nov Normal Normal Normal
25 Nov Normal Normal Normal
26 Nov Normal Normal Normal
COMMENT: Both enhancements and depletions, particularly pre-dawn,
observed at low latitudes over the UT day. Mid latitudes showed
mild enhancements across the evening and night with a slight
pre-dawn depression. Expect mostly normal conditions next three
days with continuing mild variations possible at low latitudes.
Possible minor disturbances at high latitudes in association
with geomagnetic activity.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
23 Nov 23
Observed Australian Regional MUFs
slightly above predicted monthly values
Predicted Monthly T index for November: 20
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
24 Nov 23 Near predicted monthly values
25 Nov 22 Near predicted monthly values
26 Nov 20 Near predicted monthly values
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 22 Nov
Daily Proton Fluence >1 MeV: 7.2E+05
Daily Proton Fluence >10 MeV: 1.4E+04
Daily Electron Fluence >2 MeV: 1.80E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 0%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A8.2
ACE Satellite Solar Wind Day Averaged Data for 22 Nov
Speed: 324 km/sec Density: 3.3 p/cc Temp: 21000 K Bz: -2 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
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
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