[Ips-dhfpr] IPS Daily HF Prop Report - 14 May 09
Regional Warning Centre
rwc at ips.gov.au
Fri May 15 09:55:28 EST 2009
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 14/2330Z MAY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (14 MAY)
Date T index Conditions
14 May 9 Normal
Equatorial PNG/Niue Region:
Enhanced by 15% during local day,
Depressed by 20% 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 30% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 15% over the UT day.
PCA Event : No event.
Predicted Monthly T index for May: 4
2. FORECAST (15 MAY - 17 MAY)
Date T index Conditions MUFs
15 May 10 Normal 0 to 10% above predicted monthly
16 May 10 Normal 0 to 5% above predicted monthly
17 May 5 Normal Near predicted monthly values
COMMENT: Slightly elevated MUFs expected due to an increase in
ionisation induced by an increase in EUV levels from plage associated
with AR1017 on the sun. Also alightly increased geomagnetic activity
for the next 1-2 days may increase MUFs slightly and also introduce
more variability. Equatorial latitudes showed strong nighttime
spread-F due to upwelling in the anomaly.
For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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
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