[Ips-dsgr] IPS Daily Report - 24 August 09
rwc
rwc at ips.gov.au
Tue Aug 25 09:52:28 EST 2009
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 24/2330Z AUGUST 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 24 AUGUST AND FORECAST FOR 25 AUGUST - 27 AUGUST
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 24 Aug: Very Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Aug: 68/2
1B. SOLAR FORECAST
25 Aug 26 Aug 27 Aug
Activity Very Low Very Low Very Low
Fadeouts None expected None expected None expected
10.7cm/SSN 68/2 68/2 68/2
COMMENT: Solar activity was Very Low over the last 24 hours.
The visible solar disc remains spotless. Solar wind speed declined
from 420km/s at 0000UT to be 360km/s at the time of this report.
Solar activity is expected to be Very Low for the next 3 days.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 24 Aug: Quiet
Estimated Indices 24 Aug : A K
Australian Region 3 11111111
Darwin 2 11110002
Townsville 5 2-211122
Learmonth - --------
Camden - --------
Canberra 0 01000000
Hobart 2 11111101
Casey(Ant) 4 22211110
Observed Regional daily pc3 Indices 24 Aug :
Darwin 0 (Quiet)
Townsville 37 (Quiet to unsettled)
Learmonth NA
Alice_Springs 0 (Quiet)
Gnangara 0 (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 24 Aug : A
Fredericksburg 5
Planetary 5
Observed AFr/Ap Indices 23 Aug : A K
Fredericksburg 3
Planetary 5 1320 0101
2B. MAGNETIC FORECAST
Date Ap Conditions
25 Aug 4 Quiet
26 Aug 4 Quiet
27 Aug 4 Quiet
COMMENT: Quiet geomagnetic conditions observed over the last
24 hours as solar wind speed declined. Bz fluctuated between
+/-1nT over the UT day. Quiet conditions are expected for
the next 3 days.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
24 Aug Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
25 Aug Normal Normal Normal
26 Aug Normal Normal Normal
27 Aug Normal Normal Normal
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
24 Aug -8
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Northern Australian Region:
Depressed by 25% 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 August: 1
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
25 Aug -5 near predicted monthly values/depressed 5 to
15%
26 Aug -5 near predicted monthly values/depressed 5 to
15%
27 Aug -5 near predicted monthly values/depressed 5 to
15%
COMMENT: Mostly normal HF conditions observed over the last 24
hours. Continued sporadic-E conditions observed for Equatorial
regions with depressed periods during local night. Northern AUS
regions depressed during local day and normal conditions for
Southern AUS/NZ and Antarctic regions. Expect mostly normal HF
conditions next three days.
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 23 Aug
Daily Proton Fluence >1 MeV: 1.2E+06
Daily Proton Fluence >10 MeV: 2.1E+04
Daily Electron Fluence >2 MeV: 7.20E+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 23 Aug
Speed: 469 km/sec Density: 1.9 p/cc Temp: 59100 K Bz: 0 nT
(Courtesy Space Weather Prediction 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