Monthly Preliminary Report
MPR
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Kjell Inge Malde, Director/Editor |
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Hunsteinstien 42A, |
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Volume 41 Number 7 |
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MPR no. 480 |
July 2021 |
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Monthly Preliminary Report for July 2021 |
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Solar Cycle 25: Month no. 20 |
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Report id.: cv2107 - |
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Memno. |
Name |
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Country |
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CV |
Obs |
K |
Obs. Tot. |
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KJELL INGE MALDE |
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NORWAY |
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30,1 |
20 |
1,387 |
8756 |
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DIETER BRAUCKHOFF |
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GERMANY |
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28,3 |
28 |
1,305 |
1621 |
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FRANKY DUBOIS |
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BELGIUM |
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19,4 |
27 |
0,896 |
9059 |
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MANFRED HOLL |
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GERMANY |
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22,0 |
30 |
1,012 |
5693 |
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HOWARD BARNES |
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NEW ZEALAND |
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16,8 |
13 |
0,773 |
4535 |
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HARTMUT BRETSCHNEI |
GERMANY |
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14,8 |
24 |
0,680 |
5388 |
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ROBERTO BATTAIOLA |
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ITALY |
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34,6 |
5 |
1,594 |
1930 |
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JENS ROTHERMEL |
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GERMANY |
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32,4 |
12 |
1,494 |
1270 |
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GERD SCHROEDER |
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GERMANY |
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26,6 |
14 |
1,224 |
4626 |
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SVEN OVE THIMM |
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DENMARK |
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25,5 |
16 |
1,175 |
3860 |
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ANDREW JOHNSTON |
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UNITED KINGDOM |
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19,5 |
19 |
0,900 |
3270 |
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JAN JANSSENS |
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BELGIUM |
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17,8 |
6 |
0,822 |
1117 |
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PIOTR URBANSKI |
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POLAND |
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23,2 |
30 |
1,069 |
5039 |
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TOS POLAND |
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POLAND |
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22,3 |
31 |
1,027 |
7905 |
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GRZEGORZ DALEK |
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POLAND |
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21,6 |
26 |
0,996 |
4404 |
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PAULO ROBERTO MOSE |
BRAZIL |
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22,1 |
27 |
1,021 |
2431 |
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ALEXEY RYBACK |
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RUSSIA |
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25,4 |
17 |
1,168 |
3165 |
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MONTY LEVENTHAL |
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AUSTRALIA |
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16,1 |
23 |
0,743 |
4547 |
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TERJE BJERKGAARD |
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NORWAY |
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25,2 |
10 |
1,161 |
984 |
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VLASTISLAV FEIK |
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CZECH REPUBLIC |
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20,0 |
23 |
0,920 |
2822 |
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GEMA ARAUJO |
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SPAIN |
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24,1 |
31 |
1,110 |
6727 |
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FAUSTINO GARCIA |
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SPAIN |
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18,2 |
16 |
0,838 |
3572 |
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JAVIER ALONSO |
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SPAIN |
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12,1 |
20 |
0,555 |
3671 |
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JEFFREY CARELS |
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BELGIUM |
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18,3 |
19 |
0,842 |
2911 |
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WALTER JOSE MALUF |
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BRAZIL |
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29,4 |
28 |
1,353 |
2523 |
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DENIS WALLIAN |
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FRANCE |
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14,9 |
10 |
0,687 |
419 |
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STEFAN MEISTER |
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SWITZERLAND |
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19,7 |
23 |
0,910 |
494 |
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ONDREJOV OBS. (AI CAS |
CZECH REPUBLIC |
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23,1 |
26 |
1,065 |
3362 |
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JOHAN NEYS |
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BELGIUM |
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15,4 |
13 |
0,709 |
507 |
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JEAN BOURGEOIS |
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BELGIUM |
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14,1 |
19 |
0,650 |
827 |
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IGOR GRAGEDA |
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BOLIVIA |
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19,1 |
31 |
0,881 |
622 |
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ARNAUD MENGUS |
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FRANCE |
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23,0 |
4 |
1,060 |
196 |
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STEFANIK OBSERVATOR |
CZECH REPUBLIC |
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11,7 |
18 |
0,538 |
39 |
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Totals
Observers |
Days |
CV |
No |
K |
33 |
31 |
21,41 |
659 |
0,987 |
Page 1 of 6
Results
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Date |
CV |
Obsrvrs |
Regions |
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6 rot. |
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1 |
58,00 |
19 |
1,55 |
12,76 |
15,56 |
12,90 |
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2 |
57,74 |
19 |
1,57 |
13,13 |
15,79 |
13,07 |
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3 |
51,86 |
21 |
1,58 |
13,41 |
16,00 |
13,22 |
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4 |
45,53 |
19 |
1,59 |
13,70 |
16,14 |
13,34 |
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5 |
47,13 |
23 |
1,59 |
13,90 |
16,34 |
13,47 |
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6 |
39,61 |
23 |
1,59 |
14,12 |
16,50 |
13,59 |
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7 |
8,86 |
21 |
1,59 |
14,09 |
16,47 |
13,62 |
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8 |
1,53 |
17 |
1,59 |
14,00 |
16,41 |
13,65 |
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9 |
1,45 |
22 |
1,59 |
14,01 |
16,33 |
13,67 |
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10 |
4,12 |
17 |
1,59 |
14,06 |
16,32 |
13,71 |
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11 |
10,16 |
19 |
1,60 |
14,13 |
16,33 |
13,74 |
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12 |
10,76 |
21 |
1,60 |
14,20 |
16,35 |
13,75 |
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13 |
11,80 |
20 |
1,60 |
14,26 |
16,39 |
13,76 |
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14 |
14,06 |
18 |
1,61 |
14,33 |
16,47 |
13,76 |
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15 |
12,11 |
19 |
1,62 |
14,40 |
16,50 |
13,77 |
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16 |
17,86 |
21 |
1,63 |
14,46 |
16,55 |
13,80 |
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17 |
30,55 |
20 |
1,65 |
14,55 |
16,67 |
13,85 |
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18 |
27,04 |
26 |
1,66 |
14,78 |
16,81 |
13,90 |
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19 |
27,96 |
25 |
1,67 |
15,04 |
16,92 |
13,95 |
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20 |
31,00 |
21 |
1,69 |
15,27 |
17,06 |
14,00 |
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21 |
51,63 |
27 |
1,72 |
15,71 |
17,35 |
14,15 |
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22 |
41,23 |
22 |
1,75 |
15,88 |
17,54 |
14,24 |
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23 |
17,57 |
25 |
1,77 |
15,95 |
17,61 |
14,27 |
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24 |
11,57 |
20 |
1,77 |
16,01 |
17,68 |
14,29 |
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25 |
8,71 |
25 |
1,78 |
16,04 |
17,72 |
14,29 |
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26 |
6,79 |
22 |
1,79 |
16,06 |
17,76 |
14,29 |
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27 |
1,89 |
19 |
1,79 |
16,08 |
17,77 |
14,27 |
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28 |
1,06 |
18 |
1,79 |
16,08 |
17,80 |
14,26 |
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29 |
0,23 |
25 |
1,79 |
16,08 |
17,74 |
14,23 |
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30 |
0,01 |
23 |
1,79 |
16,08 |
17,70 |
14,21 |
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31 |
0,33 |
22 |
1,79 |
16,08 |
17,67 |
14,19 |
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Totals/ |
3,96 |
27,3 |
0,97 |
4,83 |
16,85 |
13,84 |
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Avrgs |
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Page 2 of 6
CV and CV observers
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CV for July 2021 |
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Observers in July 2021 |
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70
60
50
40
30
20
10
0
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31 |
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31 |
Sunspot Region Summary for July 2021 (last 10)
:Product: Weekly Highlights and Forecasts
:Issued: 2021 Aug 09 0352 UTC
#Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#Product description and SWPC contact on the Web
#
#
#Weekly Highlights and Forecasts
Highlights of Solar and Geomagnetic Activity 02 - 08 August 2021
Solar activity was at very low levels. An isolated C1 flare peaked
at 09/0004 UTC just after the reporting period from new Region 2853 (N23, L=192, class/area Axx/010 on 08 Aug). The single spot just appeared late on 08 Aug but was preceded by an area of active plage which rotated onto the visible disk on 06 Aug. No
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on
Geomagnetic field activity ranged from quiet to G1 (Minor) geomagnetic storming. An enhancement in the IMF field began at 02/0900 UTC, likely from a glancing blow from the 28 Jul CME. Total
Page 3 of 6
Monthly graph
Lifetime no. days, 1 cycle averages
8,5
8,3
8,1
7,9
7,7
7,5
7,3
7,1
6,9
6,7
6,5
07.09.1992 |
18.03.1993 |
26.09.1993 |
06.04.1994 |
15.10.1994 |
25.04.1995 |
03.11.1995 |
13.05.1996 |
21.11.1996 |
01.06.1997 |
10.12.1997 |
20.06.1998 |
29.12.1998 |
09.07.1999 |
17.01.2000 |
27.07.2000 |
04.02.2001 |
15.08.2001 |
23.02.2002 |
03.09.2002 |
14.03.2003 |
22.09.2003 |
01.04.2004 |
10.10.2004 |
20.04.2005 |
29.10.2005 |
09.05.2006 |
17.11.2006 |
28.05.2007 |
06.12.2007 |
15.06.2008 |
24.12.2008 |
04.07.2009 |
12.01.2010 |
23.07.2010 |
31.01.2011 |
11.08.2011 |
19.02.2012 |
29.08.2012 |
09.03.2013 |
17.09.2013 |
28.03.2014 |
06.10.2014 |
16.04.2015 |
25.10.2015 |
04.05.2016 |
12.11.2016 |
23.05.2017 |
01.12.2017 |
11.06.2018 |
20.12.2018 |
30.06.2019 |
08.01.2020 |
18.07.2020 |
26.01.2021 |
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The above graph shows the deveopment in average lifetime of sunspotregions.
Lifetime today: 6,91 days average = 84,2% of max Lifetime 01.03.1993 which was 8,21 days.
News July 2021
Solar activity is still low but number of regions are slowly increasing.
As shown in this issue, the CV as
There were a total of 12 sunspot regions developing in July 2021.
SUNSPOT REGIONS
2835:
2838:
2842:
2846:
The above mentioned regions were the 4 only out of 12 regions appearing in July.
Especially from the 1st until the 7th there were according to NOAA multiple C.class flares that was produced. They mainly came from regions 2835 and 2838.
In combination with region 2842 this was also the case on the 20th. Large filaments were observed on the 11th and 31st.
Region 2844
a small HAX that lived for three days only but surrounded with active faculae. The extreme latitude of this region are only superceded by 7 regions
in history 1982 until today.
The last time this happened in the sun's southern hemisphere was in late June 2001 when two regions appeared at S48.
The last time it happened on the northern hemisphere was in May 2010 when a region appeared at N42 latitude.
From 15 August 1981 until 18 July 2021 the totals are:
NORTH 4310 regions (47% of all) average latitude 15,16 heliographic degrees SOUTH 4917 regions (53% of all) average latitude 15,42 heliographic degrees
We wish you all lots of sunny days, happy observing and good luck further on in 2021!
Please remember you are always welcome to contribute with drawings and photos!
Page 4 of 6
Pictures from last month - Observer contributions, etc.
is 40 years
on 15 August 2022
15Aug1981 - 15Aug2021
Largest Regions of July 2021
Region 2835 (upper)
Region 2836 (lower) on July 01, 2021
courtesy SDO/HMI NOAA gov
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Awards this month |
0 |
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none |
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New members: |
Welcome to: |
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none |
none |
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We are now 54 active members (last 12 mo.) |
Page 5 of 6
Solar Coordinates |
New from April 2020 |
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Daily list of Solar Ephemeris available at:
Daily list of Solar Ephemeris and SDO on grid
Here you can see Today's Po, Bo, Lo, Rotation no., RA and Dec. and adjusted
Calculating CV
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the Monthly Input Form, which you can use for all of your next reportings!
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CONTRIBUTE WITH YOUR PHOTOS AND OTHER OF INTEREST!
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Editorial close: 15.08.2021 18:18 UTC
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Page 6 of 6