[Ips-msgr] IPS Monthly Report - June 04
rwc
rwc at ips.gov.au
Wed Jul 7 09:01:28 EST 2004
SUBJ: IPS MONTHLY SUMMARY - JUNE 2004
ISSUED BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SOLAR-GEOPHYSICAL INDICES
SOLAR AUST AUST
Day 10 cm flux A-INDEX T INDEX
01-Jun 90 13 45
02-Jun 90 10 63
03-Jun 90 6 60
04-Jun 89 7 58
05-Jun 85 6 56
06-Jun 88 9 68
07-Jun 89 7 54
08-Jun 86 9 58
09-Jun 85 11 56
10-Jun 83 8 50
11-Jun 84 4 51
12-Jun 88 2 50
13-Jun 95 3 47
14-Jun 100 7 56
15-Jun 109 11 51
16-Jun 112 6 47
17-Jun 111 5 49
18-Jun 108 6 51
19-Jun 113 3 58
20-Jun 119 1 43
21-Jun 116 2 44
22-Jun 117 1 44
23-Jun 113 0 56
24-Jun 108 3 52
25-Jun 103 1 48
26-Jun 99 3 50
27-Jun 97 2 61
28-Jun 89 7 50
29-Jun 85 14 58
30-Jun 82 9 42
10 CM SUNSPOT SUNSPOT AUST AUST No of
FLUX NUMBER NUMBER A-INDEX T INDEX FLARES
Monthly Monthly Yearly Monthly Monthly >M1.0
Month Average Average Average Average Average
Jun 03 129.4 77.4 65.3 16.3 75.4 43
Jul 03 127.8 85.0 62.1 13.3 76.7 7
Aug 03 122.1 72.7 60.3 16.2 68.4 4
Sep 03 112.3 48.8 59.8 14.5 67.0 1
Oct 03 153.1 65.6 58.4 23.6 66.6 45
Nov 03 140.8 67.2 57.0 20.1 70.6 29
Dec 03 115.1 47.0 55.0 13.0 74.2 6
Jan 04 114.1 37.2 51.6p 17.0 46.5 12
Feb 04 107.8 46.0 48.1p 10.0 54.9 3
Mar 04 112.2 48.9 46.1p 9.8 63.2 4
Apr 04 101.3 39.3 44.3p 8.0 60.8 7
May 04 99.7 41.5 41.6p 6.4 51.8 1
Jun 04 97.4 43.2 39.6p 5.9 52.5 1
Monthly T indices
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1998 40 41 43 56 46 56 76 75 86 70 74 93
1999 94 81 89 77 98 124 124 105 89 92 123 113
2000 108 120 157 152 129 130 146 138 123 129 136 141
2001 130 131 135 123 112 132 112 113 144 151 156 162
2002 175 173 167 139 129 120 112 124 128 110 110 120
2003 111 93 83 73 62 68 75 59* 60* 65* 63* 69*
2004 49* 46* 57* 52* 39* 42^ 39^ 37^ 35^ 33^ 31^ 29^
2005 28^ 27^ 25^ 24^ 22^ 21^ 20^ 19^ 18^ 17^ 16^ 15^
2006 14^ 13^ 13^ 12^ 11^ 10^ 10^ 9^ 9^ 8^ 8^ 8^
2007 7^ 7^ 8^ 8^ 8^ 9^ 10^ 10^ 11^ 11^ 12^ 13^
2008 14^ 15^ 16^ 17^ 19^ 20^ 23^ 25^ 28^ 31^ 35^ 38^
2009 42^ 45^ 49^ 52^ 55^ 58^ 62^ 65^ 68^ 70^ 73^ 75^
2010 78^ 80^ 83^ 85^ 89^ 92^ 94^ 97^ 100^ 103^ 105^ 108^
2011 110^ 112^ 113^ 114^ 115^ 115^ 115^ 115^ 115^ 114^ 113^ 113^
2012 112^ 111^ 110^ 110^ 109^ 109^ 108^ 108^ 107^ 107^ 107^ 106^
2013 105^ 104^ 103^ 101^ 100^ 97^ 95^ 93^ 90^ 87^ 84^ 81^
2014 78^ 76^ 73^ 70^ 68^ 66^ 64^ 62^ 61^ 59^ 58^ 56^
* = New data. T index may have changed.
^ = IPS predicted T index.
The IPS Monthly T-index is derived from the observed monthly
median values of foF2 for each hour at up to 40 ionospheric
stations worldwide. These records become available from IPS
stations in Australia very soon after each month, but the
majority are received up to one year later. This means that
the exact observed value of the monthly T-index is not
available until some months later.
The predicted smoothed monthly T-indices are computed by
using a statistical analysis of the observed monthly T-indices
for all solar cycles since 1938. The IPS T-indices may not be
updated each month but only when sufficient new
data becomes available.
===============================================================================
2. FLARES AND SHORT-WAVE FADEOUTS
DATE CLASS M CLASS X FLARE FADEOUT POSSIBLE ON
FLARES FLARES MAX DAYLIGHT HF CIRCUIT
13 Jun 04 M1.0 1156UT
2.1 Comments on Solar Activity.
Solar activity was at mostly very low to low levels during the month
of June. Only 1 low level M class xray flare was observed during
the month, an M1 flare on 13 June. The transit of Venus across the solar
disk was observed on 8 June. Real time images of the transit were available
on the IPS website from both IPS/USAF Learmonth Observatory and IPS Culgoora
Observatory during daylight hours of the transit.
===============================================================================
3. GEOMAGNETIC DISTURBANCES (for Australian Region)
No significant geomagnetic disturbances were observed during the month of June.
===============================================================================
4. IONOSPHERIC DISTURBANCES (for Australian Region)
No significant ionospheric depressions were observed in the regional
Australian/New Zealand ionosphere during the month of June.
===============================================================================
5. IPS WARNINGS AND ALERTS ISSUED
WARNINGS:
HF RADIO WARNING:
ISSUE DATE NO BEGIN END
08 Jun 04 25 10 Jun 04 11 Jun 04
GEOMAGNETIC WARNING:
ISSUE DATE NO BEGIN END
08 Jun 04 18 09 Jun 04 10 Jun 04
ALERTS:
13 Jun 04: Flare Alert
15 Jun 04: Geomagnetic
SWF ALERTS AND DURATION REPORTS
DATE SWF BEGIN-END (UT)
None Issued.
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