[Ips-wsgr] IPS Weekly Solar and Geophysical Report (08 April 11)

rwc rwc at ips.gov.au
Fri Apr 8 14:04:02 EST 2011


SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 08 APRIL 2011, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (01 APRIL - 07 APRIL)
Date     01    02    03    04    05    06    07
10cm    109   108   114   113   109   117   112
AFr       9    13    11     6     4    16 (  5)
Aaus      9    11    12     5     4    19 (  2)
T        86    89    94    94    83   103    84

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

01 Apr 
Solar:        low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values 00-07, 18-20 UT,
      enhanced to 40% at other times.
   Niue Island Region:
      Near predicted monthly values 00-03, 19-20 UT,
      enhanced to 40% at other times.
   Northern Australian Region:
      Near predicted monthly values 00-07, 18-21 UT,
      enhanced to 35% at other times
   Southern Australian and New Zealand Region:
      Near predicted monthly values 00-07 UT at all stations
      except Perth and 20-22 UT Canberra and Sydney. Enhanced
      to 35% at other times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced to 35% at Macquarie Is and Mawson. Near
      predicted monthly values to 30% depressed at Casey and
      Scott Base.

02 Apr 
Solar:        very low
Geomagnetic:  Quiet to unsettled with isolated active periods 
              at higher latitudes. 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values to 25% enhanced.
      Enhanced to 35% 20-22 UT.
   Niue Island Region:
      Near predicted monthly values with enhancements to 35%
      01-11 and 16-19 UT.
   Northern Australian Region:
      Near predicted monthly values with enhancements to 30%
      05-15 and 19-23 UT.
   Southern Australian and New Zealand Region:
      Enhanced to 35% apart from near predicted monthly
      values at Hobart and Perth 00-07 and 15-20 UT. Spread
      F observed at Hobart and Perth 11-21 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhancements to 30% at Macquarie Is and depressions to
      30% at other stations.

03 Apr 
Solar:        low
Geomagnetic:  Quiet to unsettled with isolated active periods 
              at higher latitudes. 

Frequencies:  
   Cocos Island Region:
      Enhanced by 15-30% from 02-11UT.
      Enhanced by 30-55% from 11-20UT.
      Near predicted values at other times.
   Niue Island Region:
      Near predicted monthly values during local day,
      Enhanced by 15-30% from 03-14UT.
      Enhanced by 25-40% from 14-20UT.
      Near predicted values at other times.
   Northern Australian Region:
      Enhanced by up to 50% from 05-14UT.
      Near predicted values at other times.
   Southern Australian and New Zealand Region:
      Enhanced by up to 45% from 04-13UT.
      Near predicted values at other times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted values to depressed by 20%.

04 Apr 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day,
      Enhanced by 45% during local night.
      Near predicted monthly values after local dawn.
   Niue Island Region:
      Enhanced by 25% during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Enhanced by 40% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Enhanced by 30% during local day,
      Near predicted values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted to depressed by 20% over the UT day.

05 Apr 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day,
      Enhanced by 35% during local night.
   Niue Island Region:
      Enhanced by 65% during local day,
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 20%,
   Southern Australian and New Zealand Region:
      Enhanced by 25% 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.

06 Apr 
Solar:        low
Geomagnetic:  Quiet to Minor Storm 

Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day,
      Enhanced by 75% during local night.
   Niue Island Region:
      Enhanced by 30% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 25% during local day,
      Variable conditions during local night.
      Enhanced by 50% after local dawn.
   Southern Australian and New Zealand Region:
      Enhanced by 35% during local day,
      Enhanced by 30% to depressed up to 25% for southern
      most regions during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to depressed at times
      over the UT day.

07 Apr 
Solar:        low
Geomagnetic:  Quiet 

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

 
2. FORECAST (08 APRIL - 14 APRIL)
Solar: 
Low

Geomagnetic:  
Possible isolated active periods on 9-10 Apr.
Quite to unsettled conditions otherwise. 


Frequencies:  
Mildly depressed periods possible on 10-11 Apr at higher latitudes.
MUFs near predicted monthly values otherwise.

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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