[Ips-wsgr] IPS Weekly Solar and Geophysical Report (24 December 10)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 24 DECEMBER 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (17 DECEMBER - 23 DECEMBER)
Date     17    18    19    20    21    22    23
10cm     82    81    81    78    78    78    80
AFr       2     2     2     6     1     1 (  1)
Aaus      5     5     4    10     4     2 (  4)
T        17     8    11    23    10     9    15

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

17 Dec 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values. Depressions to 25%
      02-04, 17-19 and 23 UT.
   Niue Island Region:
      Near predicted monthly values. Depressions to 25%
      02-05, 17-18 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 20%
      00-04, 09 UT at Townsville and 09, 15-16 and 23 UT
      at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      00-04, 17-19 UT at Brisbane and Norfolk Is. and to 25%
      10-14 UT at Norfolk Is. Sporadic E observed at times
      00-15 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

18 Dec 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values. Depressions to 20%
      01-03, 17-18 UT.
   Niue Island Region:
      Near predicted monthly values. Depression to 25% at
      2100 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      00, 07-11 and 21-22 UT at Darwin and 09-15 and 19-21 UT
      at Townsville. Depressions of 55% 19-20 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      mostly 01-05 and 10-17 UT at Brisbane, Canberra,
      Norfolk Is. and Sydney.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

19 Dec 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values with depressions to 25%
      00-03, 23 UT and to 35% 22 UT. No data 16-21 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to 20%
      17-18 and 23 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      17-23 UT at Darwin and to 25% 01-02, 13 and 22-23 UT
      at Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30% mostly
      00-05, 09-13 and 18-23 UT at Brisbane and Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with depressions to 30%
      14-16 UT Macquarie Is. and to 20% 07-10 UT at Mawson.

20 Dec 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during the UT.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

21 Dec 
Solar:        very low
Geomagnetic:  Quiet 

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

22 Dec 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day,
      Variable conditions during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Dec 
Solar:        very low
Geomagnetic:  Quiet 

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

 
2. FORECAST (24 DECEMBER - 30 DECEMBER)
Solar: 
Very Low

Geomagnetic:  
Quiet to unsettled conditions.

Frequencies:  
MUFs near predicted monthly values.

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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