[Ips-wsgr] IPS Weekly Solar and Geophysical Report (12 December 08)

Fri Dec 12 13:04:52 EST 2008

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 12 DECEMBER 2008, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (05 DECEMBER - 11 DECEMBER)
Date     05    06    07    08    09    10    11
10cm     69    69    69    69    69    71    70
AFr       7    14     6     1     1     2 (  5)
Aaus      9    14     7     4     3     5 (  6)
T       -27   -31   -50   -31   -36   -40   -25

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian region.
Frequencies:  Australian ionospheric F2 critical frequencies

05 Dec 
Solar:        Very low
Geomagnetic:  Quiet to unsettled 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

06 Dec 
Solar:        Very low
Geomagnetic:  Quiet to active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

07 Dec 
Solar:        Very low
Geomagnetic:  Quiet to unsettled 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

08 Dec 
Solar:        Very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values at Vanimo. Frequencies
      at Niue were 15-60% depressed apart from near
      predicted during 01-05 and 16-17 UT. Some night spread
      F observed at Niue.
   Northern Australian Region:
      Near predicted mostly between 04-09 and 16-19 UT.
      Depressions to 30% at other times. At Cocos Is.
      frequencies were 15-50% depressed with frequencies
      near predicted 00-01, 10-11 and 20-22 UT.
   Southern Australian and New Zealand Region:
      Mostly 15 to 30% depressed. Occasional sporadic E,
      blanketing at times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values to 20%
      depressed.

09 Dec 
Solar:        Very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Frequencies at Vanimo were near predicted with
      depressions to 30% 10-16 UT. At Niue, frequencies
      were mostly 15-40% depressed with some night spread F.
   Northern Australian Region:
      Near predicted monthly values with depressions to 45%
      mostly 13-22 UT. At Townsville, frequencies mostly
      15-40% depressed with near predicted values 05-09 and
      18-22 UT.
   Southern Australian and New Zealand Region:
      Depressions to 40%. Near predicted monthly values at
      most stations 19-21 UT. Some sporadic E, mostly
      daytime.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 40%
      observed at Macquarie Is, 12-16 UT.

10 Dec 
Solar:        Very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      At Vanimo, 15-30% depressed, near predicted 15-23 UT.
      At Niue, 15-40% depressed, near predicted 03-06 UT and
      night spread F.
   Northern Australian Region:
      Near predicted monthly values to 30% depressed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 45% depressed at
      times. Depressions greater at the lower latitudes.
      Sporadic E observed at Christchurch much of the time
      and Norfolk Is. 00-04 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Sporadic E at Macquarie
      Is. observed 13-16 UT.

11 Dec 
Solar:        Low
Geomagnetic:  Quiet with some activity at high latitudes. 

Frequencies:  
   Equatorial PNG/Niue Region:
      At Vanimo, frequencies mostly near predicted 00-14 UT
      with depressions to 50% at times thereafter. At Niue,
      frequencies were mostly 15-40% depressed with daytime
      sporadic E and night time spread F observed.
   Northern Australian Region:
      At Darwin and Townsville, frequencies were depressed
      to 30% 00-05 UT then mostly near predicted monthly
      values. At Cocos Is., frequencies were near predicted
      to 13 UT then mostly 30% depressed.
   Southern Australian and New Zealand Region:
      Frequencies were near predicted monthly values to 25%
      depressed. Sporadic E observed at most stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Frequencies at
      Macquarie Is. were near predicted with depressions to
      30% 12-17 UT.

2. FORECAST (12 DECEMBER - 18 DECEMBER)
Solar: Very low.

Geomagnetic: Mostly quiet. Possible isolated active periods
12-13 December.

Frequencies: Near predicted monthly values to 30% depressed.
Depressions sometimes greater. Sporadic E may disrupt or
degrade F region communications at times.

For an explanation of some of the terms in this report, go to
http://www.ips.gov.au/1/2/1.

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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