[Ips-wsgr] IPS Weekly Solar and Geophysical Report (31 July 09)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 31 JULY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (24 JULY - 30 JULY)
Date     24    25    26    27    28    29    30
10cm     68    69    68    68    69    68    68
AFr       5     5     1     2     3     2  (  2)
Aaus      5     5     1     4     3     1  (  4)
T        -3    -7    -9    -7     1    -1    -2

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

24 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue 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 with
      periods of minor to significant degradations.

25 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% 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 with 
      periods of minor to significant degradations. 

26 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
      Depressed by 25% 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:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day with
      periods of minor to significant degradations. 

27 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values at Niue with depressions
      to 30% 00, 12-15 and 20 UT. No data for Vanimo.
   Northern Australian Region:
      Near predicted monthly values with depressions to 40%
      mostly between 03-12 and 18-19 UT. No data for
      Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. No data for
      Christchurch.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

28 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 25%
      01 and 21-22 UT. No data for Vanimo.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      mostly between 01-06 and 09-13 UT. Night spread F
      observed at most stations.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 40%
      observed at Canberra, Hobart and Sydney 12-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

29 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 30%
      01-03 and 20-22 UT. No data for Vanimo.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      mostly 00-09, 20-23 UT. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. No Christchurch data.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

30 Jul 
Solar:        Very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 25%
      01-04 and 19-20 UT. No Vanimo data.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      mostly between 00-12 UT. Sporadic E observed 07-13 UT
      at Cocos Is. Occasional night spread F.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values. Night spread F
      observed at Brisbane and Sydney.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 30%
      observed 05-11 UT and Casey and Mawson.

2. FORECAST (31 JULY - 06 AUGUST)
Solar: Low

Geomagnetic: Mostly quiet. Unsettled periods possible 1 Aug.

Frequencies: Near predicted monthly values with depressions
	     to 30% 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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