[Ips-wsgr] IPS Weekly Solar and Geophysical Report (18 December 09)
rwc
rwc at ips.gov.au
Fri Dec 18 13:14:53 EST 2009
SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT
ISSUED ON 18 DECEMBER 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (11 DECEMBER - 17 DECEMBER)
Date 11 12 13 14 15 16 17
10cm 72 75 76 79 82 83 87
AFr 0 2 1 4 0 2 ( 2)
Aaus 2 4 3 5 4 5 ( 5)
T -38 -33 -26 -24 -24 -12 -10
Solar: Solar flare activity
Geomagnetic: Geomagnetic activity observed for Australian region.
Frequencies: Australian ionospheric F2 critical frequencies
11 Dec
Solar: Very low
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Depressed by 25% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 25% during local day.
Depressed by 15% during local night.
Northern Australian Region:
Depressed by 20% during local day.
Depressed by 35% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
12 Dec
Solar: Very low
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Depressed by 20% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 30% during local day.
Depressed by 20% during local night.
Northern Australian Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Depressed by 15% during local day.
Depressed by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
13 Dec
Solar: Very low
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Depressed by 20% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 30% during local day.
Depressed by 25% during local night.
Northern Australian Region:
Depressed by 25% 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.
14 Dec
Solar: Very low
Geomagnetic: Mostly quiet. Isolated unsettled to active periods
at higher latitudes in the first half of the 24
hours.
Frequencies:
Cocos Island Region:
Near predicted monthly values with enhancements to 30%
14-19 UT.
Niue Island Region:
Depressed by 15% with depressions to 40% 06-16 UT.
Night spread F observed. Sporadic E observed 06-09
UT.
Northern Australian Region:
Near predicted monthly values to 15% depressed during
the day with depressions to 30% at night. Sporadic E
observed at times between 08 and 23 UT.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values with depressions
to 30% at times. Sporadic E observed mostly from
00-02, 07-23 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 25% depressed.
15 Dec
Solar: Very low
Geomagnetic: Quiet. Isolated unsettled to active periods at
higher latitudes.
Frequencies:
Cocos Island Region:
Near predicted monthly values to 25% depressed.
Niue Island Region:
Near predicted with depressions to 40% at times 00-03,
10-11, 17 and 20-23 UT.
Northern Australian Region:
Darwin: depressions to 40% 00-18 UT then near
predicted monthly values. Sporadic E observed around
10-16 UT and some early morning spread F. Townsville:
depressions to 25% 00-06 UT then near predicted
monthly values to enhanced.
Southern Australian and New Zealand Region:
Norfolk Is: depressions to 30% 00-17 UT then near
predicted. Some sporadic E 00-03, 15-23 UT. Brisbane:
near predicted monthly values with depressions to 30%
14-18 UT. Sporadic E observed 00-12 UT, much of the
time blanketing. Canberra/Sydney: near predicted
monthly values with depressions to 25% 05-07, 11-15
UT. Sporadic E blanketing 00-04 UT and at Sydney 09-10
UT. Hobart: Near predicted monthly values with
depressions to 25% 01-07 and 12-17 UT. Sporadic E
observed 00-19 UT. Christchurch: near predicted
monthly values with depressions to 20% 04-13 UT.
Blanketing sporadic E 01-02 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 15% depressed.
Sporadic E observed 09-16 UT at Macquarie Is.,
blanketing at times, and at Casey 15-17 UT.
16 Dec
Solar: Low
Geomagnetic: Quiet. Isolated unsettled to active periods at
higher latitudes.
Frequencies:
Cocos Island Region:
Near predicted monthly values. Depressions to 15% 01,
02 and 16-17 UT.
Niue Island Region:
Near predicted monthly values withe depressions to 30%
00-05 and 19-22 UT.
Northern Australian Region:
Near predicted monthly values. Depressions to 35% at
Darwin 03-06, 08-11 and 16-20 UT. Depressions to 25%
at Townsville 03-05, 17, 18 UT. Sporadic E observed
11-12 and 16 UT at Darwin and 16-29 UT at Townsville.
Southern Australian and New Zealand Region:
Near predicted monthly values. Depressions to 30% at
Brisbane (00-02, 04-06, 11-14 and 18-22 UT), Norfolk Is.
(02-05, 09-15 UT) Hobart (21-23 UT) and Christchurch
(01, 07, 09 and 18-22 UT). Sporadic E observed at
various times but mostly 00-09 and 15-23 UT, sometimes
blanketing.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 15% depressed.
Depressions to 30% at Macquarie Is. 12-16 UT.
17 Dec
Solar: Very low
Geomagnetic: Quiet. Isolated unsettled to active periods at
higher latitudes.
Frequencies:
Cocos Island Region:
Near predicted monthly values with depressions to 15%
15-20 UT. Sporadic E observed 01-07 and 09 UT.
Niue Island Region:
Near predicted monthly values with depressions to 40%
01-06, 13-18 and 21-23 UT. Sporadic E observed 01-07,
09 UT.
Northern Australian Region:
Near predicted monthly values with depressions to 40%
at Darwin (03-05, 08-20 UT) and Townsville (03-06 UT).
Sporadic E observed at Darwin (09, 15-19 UT) and
Townsville (10, 11, 20 UT).
Southern Australian and New Zealand Region:
Near predicted monthly values. Depressions to 30% at
Brisbane and Norfolk Is. 00-07, 23 UT and at Norfolk
15-18 UT. Depressions to 25% at Canberra and Sydney
01-08, 22-23 UT. Depressions to 15% at Christchurch
and Hobart 00-08 UT. Sporadic E observed mostly 00-08
and 23 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 15% depressed.
Depressions to 25% at Macquarie Is. 14-16 UT.
2. FORECAST (18 DECEMBER - 24 DECEMBER)
Solar: Very low to low
Geomagnetic: Quiet to unsettled. Active periods on 20 Dec.
Frequencies: Near predicted monthly values with depressions
to 30% at times. Depressions possible on 20 and 21 Dec.
Sporadic E may degrade or disrupt communications.
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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