Bart: Modeling the historical sunspot record from planetary periods

WUWT contributor ‘Bart’ has used a powerful mode of analysis of the sunspot record to reveal periodicities and also devised an elegant algorithm which can produce a time series very similar to the historical sunspot record. Bart does not explicitly link the two periods found to planetary periods as I have in the title of [...]

S&T committee want

El Reg. is reporting “The House of Commons Science and Technology Select Committee has called for greater integrity and data disclosure in peer-reviewed literature. It recommends that all UK research institutions should have “a specific member of staff leading on research integrity”. Click on image to go to S&T web page. Want and get are [...]

Leif Svalgaard on exotic things: finally accepts planets may be affecting Sun after all!

Well, I’m almost speechless. After another intemperate exchange of views on WUWT, Leif suddenly comes out with this after I gave him a lesson in Newtonian mechanics: tallbloke says: July 28, 2011 at 3:59 pm Leif Svalgaard says: July 28, 2011 at 3:06 pm What you should have learned by now from the various exchanges [...]

D-day: Loehle and Scafetta create the beachhead

A new paper by Nicola Scafetta and Craig Loehle has been published in the Open Atmospheric Science Journal 5:74-86. Building on Scafetta’s previous recent papers it posits that 60 and 20 year cycles linked to the solar barycentric orbit affect the terrestrial climate and coupled with a trend possibly due to co2 corresponding to the [...]

Ed Fix: Solar activity simulation model revealed

Ed Fix has been back in touch about his solar activity simulation model. Ed couldn’t reveal too much last time around as the paper was pending publication in an Elsevier book. My thanks to Ed for being true to his word and returning here to the talkshop armed with a full explanation of his model [...]

Long-term Variability in the Length of the Solar Cycle

Rogers, Richards & Richards paper This 2005 paper from Penn State is a superb work where the authors are astrophysicists and a statistician. A lot of very interesting items in the paper for those trying to untangle the solar problem and it goes as far as mentioning a forbidden word, barycentre. If showing the image [...]

Validating Solanki 2004 solar activity reconstruction

Solanki 2004 is a widely cited reconstruction of solar activity based on INTCAL98 (1998) 14C as a proxy. Nature abstract I have used INTCAL09 (2009) as a basis and a trivially simple method to reconstruct the Solanki et al result, with differences and excluding the older portion of their result. (14C record deteriorates to coarse [...]

14C as a proxy, but for what exactly?

How is 14C data turned into a solar or radiative proxy?

Does sunspot number calibration by the “magnetic needle” make sense?

Does sunspot number calibration by the “magnetic needle” make sense? K. Mursulaa, , , I. Usoskinb and O. Yakovchouka, 1  aDepartment of Physical Sciences, University of Oulu, Finland bSodankylä Geophysical Observatory, University of Oulu, Finland Accepted 18 April 2008. Available online 10 May 2008. Abstract It has been suggested recently that early sunspot numbers should be re-calibrated and significantly [...]

60M year limit to paleo-reconstruction due to minor planet chaos

I think Ulric might like this one. It turns out, according to a new study, that minor planets in the asteroid belt have a chaotic effect on Earth’s orbit. This from http://www.physorg.com/news/2011-07-minor-planets-ceres-vesta-earth.html Astronomy & Astrophysics is publishing a new study of the orbital evolution of minor planets Ceres and Vesta, a few days before the [...]