[Ips-msgr] IPS Monthly Report - March 04
rwc
rwc at ips.gov.au
Mon Apr 5 12:59:19 EST 2004
SUBJ: IPS MONTHLY SUMMARY - MARCH 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-Mar 102 13 51
02-Mar 99 15 44
03-Mar 90 10 49
04-Mar 98 6 30
05-Mar 107 6 40
06-Mar 105 1 48
07-Mar 106 2 45
08-Mar 108 4 49
09-Mar 109 16 42
10-Mar 113 23 45
11-Mar 113 23 77
12-Mar 108 18 39
13-Mar 104 13 67
14-Mar 103 14 51
15-Mar 101 10 25
16-Mar 110 7 58
17-Mar 110 5 62
18-Mar 115 9 74
19-Mar 112 5 67
20-Mar 114 6 74
21-Mar 111 11 76
22-Mar 116 10 66
23-Mar 118 5 82
24-Mar 120 2 80
25-Mar 127 4 97
26-Mar 124 11 91
27-Mar 128 12 93
28-Mar 129 13 101
29-Mar 129 10 86
30-Mar 127 11 86
31-Mar 121 8 63
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
Mar 03 132.3 61.5 74.2 15.4 90.9 9
Apr 03 126.5 60.0 70.4 14.7 88.7 15
May 03 116.7 55.2 67.9 17.5 72.9 12
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 58.6p 23.6 66.6 45
Nov 03 140.8 67.2 57.6p 20.1 70.6 29
Dec 03 115.1 47.0 55.6p 13.0 74.2 6
Jan 04 114.1 37.2 52.3p 17.0 46.5 12
Feb 04 107.8 46.0 48.9p 10.0 54.9 3
Mar 04 112.2 48.9 47.0p 9.8 63.2 4
Monthly T indices
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1992 153 172 155 134 95 80 88 66 68 66 84 90
1993 74 77 79 63 63 64 62 50 37 40 34 43
1994 57 41 42 26 15 14 23 18 20 20 20 20
1995 24 33 23 13 3 11 13 10 13 9 13 7
1996 12 7 4 2 5 2 3 4 4 3 11 15
1997 14 11 10 8 11 5 9 17 32 27 28 38
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 174 174 167 139 130 123 115 126 131 113 110 118
2003 110 93 82 72 62* 68* 74* 61* 61 66 63* 66*
2004 47* 42* 48^ 45^ 43^ 40^ 38^ 37^ 35^ 34^ 32^ 31^
2005 29^ 28^ 27^ 25^ 24^ 22^ 21^ 20^ 19^ 17^ 17^ 16^
2006 15^ 14^ 13^ 12^ 12^ 11^ 10^ 10^ 9^ 9^ 8^ 8^
2007 7^ 7^ 7^ 7^ 8^ 8^ 9^ 9^ 10^ 11^ 11^ 12^
2008 13^ 14^ 16^ 17^ 19^ 20^ 23^ 25^ 28^ 31^ 35^ 38^
* = 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
06 Mar 04 M1.3 1217UT
18 Mar 04 M1.6/SF 0517UT
24 Mar 04 M1.5/SF 2329UT
25 Mar 04 M2.3/SF 0439UT
2.1 Comments on Solar Activity.
Solar activity was at predmoinately low levels during the month
of March. The largest flare was an M2.3 at 0439UT on 25 March.
A total of 4 low level M class flares were observed during the
month. No X class flares were observed.
===============================================================================
3. GEOMAGNETIC DISTURBANCES (for Australian Region)
DATE COMMENTS
02 Mar 04: Quiet to Active
09 Mar 04: Quiet to Active
10 Mar 04: Quiet to Minor Storm
11 Mar 04: Quiet to Minor Storm
12 Mar 04: Unsettled to Active
Coronal hole wind stream induced activity observed 10-12 Mar.
10 and 11 Mar were the most disturbed days of the month with
the local geomagnetic A index reaching 23 on these days.
===============================================================================
4. IONOSPHERIC DISTURBANCES (for Australian Region)
02 Mar 04: Southern region MUFs depressed 15%
04 Mar 04: Southern region MUFs depressed 15%
09 Mar 04: Southern region MUFs depressed 10%
12 Mar 04: Southern region MUFs depressed 20%
14 Mar 04: Southern region MUFs depressed 15%
15 Mar 04: Southern region MUFs depressed 20%
Depressed Southern region Aus/NZ MUFs observed 12 and 15
March.
===============================================================================
5. IPS WARNINGS AND ALERTS ISSUED
WARNINGS:
HF RADIO WARNING:
ISSUE DATE NO BEGIN END
11 Mar 04 17 12 Mar 04 12 Mar 04
14 Mar 04 18 14 Mar 04 14 Mar 04
GEOMAGNETIC WARNING:
ISSUE DATE NO BEGIN END
09 Mar 04 10 10 Mar 04 11 Mar 04
26 Mar 04 11 26 Mar 04 28 Mar 04
ALERTS:
06 Mar 04: Flare Alert
09 Mar 04: Geomagnetic
10 Mar 04: Geomagnetic
11 Mar 04: Geomagnetic
18 Mar 04: Flare Alert
24 Mar 04: Flare Alert
25 Mar 04: Flare Alert
27 Mar 04: Geomagnetic
28 Mar 04: Geomagnetic
SWF ALERTS AND DURATION REPORTS
DATE SWF BEGIN-END (UT)
None Issued.
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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