[Ips-dhfpr] IPS Daily HF Prop Report - 01 February 09
rwc
rwc at ips.gov.au
Mon Feb 2 10:44:14 EST 2009
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 01/2330Z FEBRUARY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (01 FEBRUARY)
Date T index Conditions
01 Feb -22 Normal
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
Depressed by 15% during local day,
Depressed by 30% during local night.
Depressed by 40% after local dawn.
Northern Australian Region:
Depressed by 15% during local day,
Depressed by 15% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Depressed by 20% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for February: 9
2. FORECAST (02 FEBRUARY - 04 FEBRUARY)
Date T index Conditions MUFs
02 Feb -25 Normal 15 to 25% below predicted monthly
values
03 Feb -25 Normal 15 to 25% below predicted monthly
values
04 Feb -25 Normal 15 to 25% below predicted monthly
values
COMMENT: MUFs and T-index were reduced well below monthly average
values as the energising effect on the ionosphere of slightly
enhanced geomagnetic activity, wore off as solar wind speeds
declined to normal after the passage of a solar coronal hole.
Sporadic E was again extensive throughout the Australsian region
and mid-latitude spread-F was above average. Equatorial MUFs
were again significantly enhanced and depressed due to winds
and tides in the thermsophere at 300km altitude. Expect similar
condition to prevail for the next three days with depressions
to continue in the low to mid latitudes due to very low solar
activity.
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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
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