jump to navigation

David Archibald’s elegant illustration of how late and weak solar cycle 24 is proving October 13, 2008

Posted by honestclimate in Global Cooling.
Tags: , , , ,
trackback
Dr David Archibald

Dr David Archibald

David Archibald’s elegant illustration of how late and weak solar cycle 24 of how late and weak solar cycle 24 is proving

From Warwick Hughes Blog, October 11, 2008

David Archibald illustration

<click on the picture for enlarged view>

There is another way of looking at solar cycles.

Solar cycles actually start with the magnetic reversal near the peak of the previous cycle. The sunspots take seven years to surface and become visible. Almost all sunspot cycles tend to be about 18.5 years long, measured from the peak of the previous cycle.

The above graph compares the average of three cycles, 21 to 23, from the late 20th century with three, 14 to 16, from the late 19th century (which had much colder weather). Also included is Solar Cycle 5, the first half of the Dalton Minimum.

Given we are now 103 months from the peak of Solar Cycle 23, it is now too late to get a late 19th century-type outcome for Solar Cycle 24. Out of the 24 named solar cycles, Solar Cycle 24 is now the latest after Solar Cycle 5.

It is so late that it is now in no man’s land and its weakness is now more of a consideration than lateness in itself.

It is certain that we will be getting a Dalton Minimum-type experience.
David Archibald

http://www.warwickhughes.com/blog/?p=177

Comments»

1. Chris McSweeney - February 22, 2009

The animists won’t take any notice until the Thames freezes – which one day it will. (As a member of the Lavoisier Group said: “In theological terms, the global warming belief system is a reversion to animism.”)


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: