[Ips-wsgr] IPS Weekly Solar and Geophysical Report (23 July 10)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 23 JULY 2010, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (16 JULY - 22 JULY)
Date     16    17    18    19    20    21    22
10cm     77    79    77    80    87    89    88
AFr       2     1     2     2     3     3 (  5)
Aaus      3     1     1     1     4     4 (  3)
T        14    10    10    15    16    29    28

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

16 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values. Enhancements to 40%
      05-07 UT. Depressions to 30% 11-21 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to 30%
      00, 04, 07-13 and 21-22 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      04-11, 20-21 UT at Darwin. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 25%. Enhanced to 20% 11-19 UT at
      Hobart, Norfolk Is. and Sydney. Night spread F
      observed.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional
      depressions to 30%.

17 Jul 
Solar:        low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Mostly 15-35% depressed.
   Niue Island Region:
      Mostly 15-30% depressed. Sporadic E observed 13-17 UT
      and some night spread F.
   Northern Australian Region:
      Mostly 10-25% depressed. Sporadic E observed at Darwin
      09-21 UT and Townsville 07-12 UT. Spread F observed at
      Townsville 13-20 UT.
   Southern Australian and New Zealand Region:
      Mostly 20% depressed 00-07 UT, then near predicted
      monthly values to 20% enhanced. Night spread F
      observed at all stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional
      depressions to 20%.

18 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values to 20% enhanced 04-07
      and 11-13 UT. Depressions to 25% at other times.
      Sporadic E observed 14-17 UT.
   Niue Island Region:
      Mostly 10-30% depressed.
   Northern Australian Region:
      Mostly 10-25% depressed. Spread F observed 14-20 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 20% depressed. Spread
      observed during night time.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% depressed.

19 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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.

20 Jul 
Solar:        low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Depressed by 20% 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):
      Near predicted monthly values over the UT day.

21 Jul 
Solar:        very low
Geomagnetic:  Quiet 

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

22 Jul 
Solar:        very low
Geomagnetic:  Quiet 

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

 
2. FORECAST (23 JULY - 29 JULY)
Solar: 
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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