[Ips-dsgr] IPS Daily Report - 20 May 09
rwc
rwc at ips.gov.au
Thu May 21 09:52:06 EST 2009
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 20/2330Z MAY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 20 MAY AND FORECAST FOR 21 MAY - 23 MAY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 20 May: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 20 May: 72/8
1B. SOLAR FORECAST
21 May 22 May 23 May
Activity Very Low Very Low Very Low
Fadeouts None expected None expected None expected
10.7cm/SSN 71/6 70/5 70/5
COMMENT: Solar activity was Very Low over the past 24 hours.
Solar wind speed increased from 280km/s at 00UT to be 340km/s
at the time of this report. The Bz component of the interplanetary
magnetic field ranged between +/-5nT. Solar activity is expected
to remain at very low levels for the next 3 days.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 20 May: Quiet
Estimated Indices 20 May : A K
Australian Region 3 22110111
Darwin 4 22110122
Townsville 6 22211222
Learmonth 5 21210222
Camden 2 1-100111
Canberra 2 11100111
Hobart 2 11110111
Casey(Ant) 4 22211111
Observed Regional daily pc3 Indices 20 May :
Darwin 2 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice_Springs 0 (Quiet)
Camden 44 (Unsettled)
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 20 May : A
Fredericksburg 3
Planetary 5
Observed AFr/Ap Indices 19 May : A K
Fredericksburg 2
Planetary 5 2211 1112
2B. MAGNETIC FORECAST
Date Ap Conditions
21 May 5 Quiet
22 May 5 Quiet
23 May 5 Quiet
COMMENT: Quiet geomagnetic conditions observed over the last
24 hours. Quiet conditions are expected for the next three days.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
20 May Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
21 May Normal Normal Normal-fair
22 May Normal Normal Normal-fair
23 May Normal Normal Normal-fair
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
20 May 8
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
No data available 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.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 25% over the UT day.
Predicted Monthly T index for May: 4
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
21 May 5 near predicted monthly values
22 May 5 near predicted monthly values
23 May 5 near predicted monthly values
COMMENT: Mostly normal HF conditions observed over the last 24
hours for all regions, with enhanced conditions for Southern
AUS/NZ regions during local night. Some isolated disturbed periods
for Antarctic regions. Similar conditions are expected for the
next 3 days.
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 19 May
Daily Proton Fluence >1 MeV: 7.1E+05
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 6.30E+05 (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 19 May
Speed: 288 km/sec Density: 0.2 p/cc Temp: NA K Bz: -1 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