Tag Archives: Solar cycle

Solar cycle update – sun’s magnetic activity still in a slump

Posted on May 7, 2013 by

Despite some small upticks on sunspot and 10.7cm radio activity, the magentic activity of the sun is still bumping along the bottom. A slight uptick was seen in sunspot count.  A similar slight uptick occurred in radio flux. About these … Continue reading →

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Posted in Solar | Tagged , , , , , , | 137 Comments

Sunspot Cycle and the Global Temperature Change Anomaly

Posted on May 3, 2013 by

UPDATE: The author writes: Thank you for posting my story on Sunspots and The Global Temperature Anomaly. I was pleasantly surprised when I saw it and the amount of constructive feedback I was given. Your readers have pointed out a … Continue reading →

Posted in Solar | Tagged , | 166 Comments

February solar data shows the Sun to still be slumping – but NASA says ‘twin peaks’ may happen

Posted on March 6, 2013 by

The data from SWPC is in, and it is lethargic at best. Sunspot numbers took a hit, down to about 42,  a delta of ~50 lower compared to the red prediction line. 10.7 cm solar radio flux took a similar … Continue reading →

Posted in Solar | Tagged , , , , | 196 Comments

How long to the 24/25 solar minimum?

Posted on March 5, 2013 by

Guest post by David Archibald Climate has real world consequences, and those operating in fields that will be affected by changing climate bring a different perspective to the problem of predicting what will happen. Bill Fordham, advising the grain industry … Continue reading →

Posted in Science, Solar | Tagged , , , , , , , | 81 Comments

Update on Solar Cycle 24 – Hathaway’s latest predictions show smallest sunspot cycle since 1906

Posted on February 5, 2013 by

The sun is currently showing two significant spots, though activity is generally quiet. Current SSN is 30, and Sunspot AR1667 (on the left) is in decay, and it is no longer crackling with C-class solar flares. Credit: SDO/HMI First the … Continue reading →

Posted in Solar | Tagged , , | 153 Comments

NASA on the sun: ‘…tiny variations can have a significant effect on terrestrial climate.”

Posted on January 9, 2013 by

Researchers have considered the possibility that the sun plays a role in global warming. From NASA GSFC:  Solar Variability and Terrestrial Climate In the galactic scheme of things, the Sun is a remarkably constant star.  While some stars exhibit dramatic … Continue reading →

Posted in Solar, Spaceweather | Tagged , , , , , , , | 320 Comments

Neutrons and the 1970s cooling period

Posted on January 4, 2013 by

Note: the original title Solar Neutrons and the 1970s cooling period was unintentionally misleading as Dr. Svalgaard points out in comments: What produces Solar Neutrons? the title of the post is misleading. The cosmic rays are protons, not neutrons, and … Continue reading →

Posted in Agriculture, Solar | Tagged , , , , , , | 139 Comments

New paper demonstrates that climate responds to short and long-term changes in solar activity

Posted on January 2, 2013 by

(Via the Hockey Schtick) A new peer reviewed paper published in The Holocene finds a significant link between solar activity and climate over the past 1000 years. According to the authors: “Our results suggest that the climate responds to both … Continue reading →

Posted in Solar | Tagged , , , | 143 Comments

The sun – still slumping

Posted on September 3, 2012 by

The latest solar cycle update graphs have been released by the NOAA SWPC today, and the anemic cycle 24 continues: The current count isn’t keeping up with the prediction line in red. Not only is the sunspot count low, so … Continue reading →

Posted in Solar | Tagged , , , | 89 Comments

The Sun has changed its character

Posted on July 2, 2012 by

Guest post by David Archibald A number of solar parameters are weak, and none is weaker than the Ap Index: Figure 1: Ap Index 1932 to 2026 Figure 1 shows the Ap Index from 1932 with a projection to the … Continue reading →

Posted in Solar, Spaceweather | Tagged , , , , , , , | 176 Comments

A quiet cue ball sun

Posted on June 24, 2012 by

Source: http://sdo.gsfc.nasa.gov/assets/img/latest/latest_4096_4500.jpg A couple of people have noticed (as did I) that the sun is essentially blank.

Posted in Astronomy | Tagged , , , , , , , | 110 Comments

NASA June 2012 Solar Cycle 24 Prediction

Posted on June 8, 2012 by

Compiled by Joe D’aleo WeatherBell via NASA MSFC The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number maximum of about 60 in the Spring of 2013. We are currently over three years into Cycle 24. The current … Continue reading →

Posted in Solar, Spaceweather | Tagged , , , , , , , | 83 Comments

NASA/Hathaway’s updated solar cycle prediction – smallest in 100 years

Posted on May 2, 2012 by

…the predicted size makes this the smallest sunspot cycle in about 100 years (Updated 2012/05/01) From: http://solarscience.msfc.nasa.gov/predict.shtml The current prediction for Sunspot Cycle 24 gives a smoothed sunspot number maximum of about 60 in the Spring of 2013. We are … Continue reading →

Posted in Science, Solar | Tagged , , , , , , | 134 Comments

New paper in the Journal of Atmospheric and Solar-Terrestrial Physics demonstrates that planets do not cause solar cycles

Posted on April 15, 2012 by

Planetary effects are too small by several orders of magnitude to be a main cause of the solar cycle. Argiris Diamantis writes in with this tip: Professor Cornelis de Jager from the Netherlands has put a new publication on his … Continue reading →

Posted in Science, Solar | Tagged , , , , | 325 Comments

Solar Update March 2012

Posted on March 15, 2012 by

by David Archibald Figure 1: Heliospheric Current Sheet Tilt Angle 1976 – 2012 The heliospheric current sheet tilt angle is currently at 67°. Solar maximum occurs when it reaches 74° – so a little bit further to go.

Posted in Solar | Tagged , , , , , , , | 93 Comments

The sun is still in a funk: sunspot numbers are dropping when they should be rising

Posted on March 2, 2012 by

The sunspot number for February from SIDC is down again, to 33.1 Here’s the source of that data: http://sidc.oma.be/DATA/monthssn.dat So far, cycle 24 is significantly lower in SSN number that the last three cycles, in addition to having a delayed … Continue reading →

Posted in Science, Solar | Tagged , , , , , , , , , | 137 Comments

Do Latest Solar Studies Confirm Upcoming Global Cooling?

Posted on February 13, 2012 by

Guest post by Matti Vooro I fully support the findings of  Jan –Erik Solheim , Kjell Stordahl and Ole Humlum and their very recent paper called The long sunspot cycle 23 predicts a significant temperature decrease in cycle 24  dated … Continue reading →

Posted in Solar | Tagged , , , , , , , | 192 Comments

Quantifying the Solar Cycle 24 Temperature Decline

Posted on February 11, 2012 by

Guest post by David Archibald Three wise Norwegians – Jan-Erik Solheim, Kjell Stordahl and Ole Humlum – have just published a paper entitled “The long sunspot cycle 23 predicts a significant temperature decrease in cycle 24”. It is available online … Continue reading →

Posted in Forecasting, Science, Solar | Tagged , , , , , , , | 210 Comments

Headlines over solar cycle 25 and potential global cooling

Posted on January 29, 2012 by

There’s a story about solar cycle 25, and a potential “mini ice age” in the UK Daily Mail by David Rose that is making headlines today, even hitting the Drudge Report. The headline is: Forget global warming – it’s Cycle … Continue reading →

Posted in Climate data, Solar | Tagged , , , , , , , , , | 186 Comments

First Estimate of Solar Cycle 25 Amplitude – may be the smallest in over 300 years

Posted on January 25, 2012 by

Guest post by David Archibald Predicting the amplitude of Solar Cycle 24 was a big business. Jan Janssens provides the most complete table of Solar Cycle 24 predictions at: http://users.telenet.be/j.janssens/SC24.html Prediction activity for Solar Cycle 24 seemed to have peaked … Continue reading →

Posted in Solar | Tagged , , , , , , , | 251 Comments