[Ips-dhfpr] IPS Daily HF Prop Report - 05 February 12 issued 2332 UT on 05 Feb 2012

rwc rwc at ips.gov.au
Mon Feb 6 10:32:29 EST 2012


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z FEBRUARY 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 FEBRUARY) 
Date   T index  Conditions    
04 Feb    77    Normal         

Flares: none.

MUFs:
   Niue Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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:  80
2. FORECAST (05 FEBRUARY - 07 FEBRUARY)
Date   T index  Conditions       MUFs                              
05 Feb    75    Normal           Near predicted monthly values
06 Feb    75    Normal           Near predicted monthly values    
07 Feb    70    Normal           0 to 5% below predicted monthly 
                                 values   

COMMENT: MUFs were depressed ~15% at Mid-latitudes during the 
daytime, probably from the decreased EUV and X-ray ionising flux 
from the low number of sunspots which are all fairly small and 
low activity. However, in an opposite trend, Equatorial latitudes 
had enhanced MUFs near local noon, probably due to transport 
of ionisation by thermospheric neutral winds into the region. 
Nighttime values were close to monthly medians at Mid-latitudes.

----------------------------------------------------------
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
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tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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