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No sunspots
alan
post Dec 29 2007, 09:08 PM
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Something you don't see very often: no sunspots
http://umbra.nascom.nasa.gov/images/latest_mdi_igram.gif
most recent sunspot was seen on the 19th
http://www.nwra-az.com/spawx/comp.html
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nprev
post Dec 29 2007, 11:04 PM
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Well, the last solar max was one helluva max (double-peaked, in fact), so perhaps this solar min will be of equal magnitude. Happy news is that aircraft & maritime navigation systems--specifically, GPS & LORAN-C, to say nothing of HF radio comms-- are lovin' it! smile.gif


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tty
post Dec 29 2007, 11:24 PM
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It does seem as if the sun has a slight hiccup just now:

http://lasp.colorado.edu/sorce/total_solar...nth_640x480.png
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Canopus
post Jan 8 2008, 12:19 PM
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There were many days of no sunspots in Nov. & Dec. especially; minimum is such a drag. wink.gif Spaceweather.com formerly kept track of how many days without 'spots...and then quit giving notice because it'd been so long. That web site gives daily 'spot count, even if it's zero.

But now we're "over the hump" and Cycle #24 has begun (as per other thread in this folder).
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Stu
post Aug 23 2009, 11:02 AM
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No sunspots, but a very enjoyable and succesful "Sunwatch" here in Kendal yesterday...

http://cumbriansky.wordpress.com/2009/08/2...watch-a-success



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Hofi
post Oct 2 2009, 12:24 PM
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Hi!

It seems as the new cycle has just began.
If you have a look at this image from Wikipedia you will see that it is a bit late.


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dilo
post Oct 2 2009, 03:45 PM
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Hofi, I think the updated image you should link is this one, really showing hints of the new solar cycle:
http://solarscience.msfc.nasa.gov/images/bfly.gif
Indeed, it seems we are returning to less strong activity pattern we had about 1 century ago...


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tanjent
post Oct 5 2009, 08:43 PM
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Dilo, maybe the astronomers of today can see more of the smaller spots than those of 100+ years ago?
I know the Wikipedia chart is based on the area covered, not the number of spots, but surely there
were a lot more unobserved spots back then, and this must account for some of that (until-recently)
steady increase.
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Guest_PhilCo126_*
post Oct 6 2009, 11:06 AM
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A few sunspots appeared but faded away:
http://sites.google.com/site/larrygerstman/the-sun
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MarsIsImportant
post Oct 14 2009, 01:11 PM
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13 consecutive days without sunspots.

Despite what most thought just a few months ago, apparently the sun has not hit solar minimum yet. This year 79% of the days were without sunspots; last year only 73% of days were with a blank sun.
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Guest_PhilCo126_*
post Jan 15 2010, 10:56 AM
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Indeed, the Sun experienced a special period, but it allowed NASA researchers to show a timely link between the Sun and the climate of Earth's thermosphere, the region above 100 km (roughly 60 miles), an essential step in making accurate predictions of climate change in the high atmosphere. Dramatic cooling in Earth’s upper atmosphere correlates with the declining phase of the current solar cycle.
Results obtained through TIMED mission.
(Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics)
Meanwhile, Sunspot 1040 is a sprawling sunspot group.
http://solarcycle24.com/index2.htm
http://www.n3kl.org/sun/index.html

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Pertinax
post Jun 16 2011, 12:15 PM
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I struggled with resurrecting a dormant thread, but eventually thought that the this the comment is germane and timely.

Interesting S&T article regarding the current and upcoming solar cycles: http://www.skyandtelescope.com/news/123844859.html


-- Pertinax
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Mongo
post Mar 8 2013, 08:22 PM
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I know that this might be considered thread necromancy, but this article is interesting.



QUOTE
Eerily Blank Sun

Something unexpected is happening on the Sun. 2013 was supposed to be the year of "solar maximum," the peak of the 11-year sunspot cycle. Yet 2013 has arrived and solar activity is relatively low. Sunspot numbers are well below their values from 2011, and strong solar flares have been infrequent.

The image above shows the Earth-facing surface of the Sun on February 28, 2013, as observed by the Helioseismic and Magnetic Imager (HMI) on NASA's Solar Dynamics Observatory. HMI observes the solar disk at 6173 Ångstroms, a wavelength designed to study surface oscillations and the magnetic field. HMI observed just a few small sunspots on an otherwise clean face, which is usually riddled with many spots during peak solar activity.
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