[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. 
----------------------------------------------------------
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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