[Ips-dsgr] IPS Daily Report - 06 April 08
rwc
rwc at ips.gov.au
Mon Apr 7 09:52:30 EST 2008
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 06/2330Z APRIL 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 06 APRIL AND FORECAST FOR 07 APRIL - 09 APRIL
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 06 Apr: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 06 Apr: 69/3
1B. SOLAR FORECAST
07 Apr 08 Apr 09 Apr
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 speeds increased from approximately 600 km/s
up to 750 km/s and declined slowly to approximately 620 km/s
during the past 24 hours under the influence of a coronal hole
wind stream. Solar wind speeds are expected to continue to decline
slowly over the next 24-48 hours. Solar activity is expected
to remain at very low levels for the next few days.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 06 Apr: Quiet to Active
Estimated Indices 06 Apr : A K
Australian Region 12 23334222
Darwin 10 23333212
Townsville 11 23333222
Learmonth 12 23334222
Camden 12 23334222
Canberra 12 23334222
Hobart 14 23344222
Casey(Ant) 15 34433222
Observed Regional daily pc3 Indices 06 Apr :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 8 (Quiet)
Canberra 68 (Active)
Hobart 68 (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 06 Apr : A
Fredericksburg 13
Planetary 20
Observed AFr/Ap Indices 05 Apr : A K
Fredericksburg 9
Planetary 21 1103 3654
2B. MAGNETIC FORECAST
Date Ap Conditions
07 Apr 10 Mostly quiet to unsettled with the small chance
of active periods and minor storm levels at high
latitudes.
08 Apr 8 Quiet to Unsettled
09 Apr 8 Quiet to unsettled
COMMENT: Minor storm levels were observed at high latitudes during
the past 24 hours, with isolated active levels observed for the
Australian region. Mostly quiet to unsettled levels are expected
for the Australian region for the next few days with the small
chance of isolated active levels for 7 April. Active to minor
storm levels are possible for high latitudes for 7-8 April.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
06 Apr Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
07 Apr Normal Normal Normal-Fair
08 Apr Normal Normal Normal-Fair
09 Apr Normal Normal Normal-Fair
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
06 Apr 22
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Variable conditions during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Enhanced by 20% after local dawn.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Mostly near predicted monthly values to depressed up
to 15-30% at times.
Predicted Monthly T index for April: 6
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
07 Apr 15 5 to 10% above predicted monthly values
08 Apr 10 Near predicted monthly values
09 Apr 5 Near predicted monthly values
COMMENT: Depressions of 15-30% were observed at times at high
latitudes, othwerwise conditions for the Aus/NZ region were mostly
normal to enhanced. Spread-F conditions have been observed at
times at some stations during the past 24 hours which may have
degraded HF communications. HF conditions are expected to be
mostly normal for the Aus/NZ region for 7-9 April.
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 05 Apr
Daily Proton Fluence >1 MeV: 9.1E+06
Daily Proton Fluence >10 MeV: 1.8E+04
Daily Electron Fluence >2 MeV: 1.70E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 3%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 05 Apr
Speed: 609 km/sec Density: 2.0 p/cc Temp: 242000 K Bz: 1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
-----------------------------------------------------------
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information. The views expressed in
this message are those of the individual sender, unless
specifically stated to be the views of IPS. If you are not
the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments.
Occasionally IPS sends email promoting IPS products and
services to its mailing list customers. If you do not wish to
receive this promotional material please email
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"
More information about the ips-dsgr
mailing list