WordPress is a huge site containing very many blogs. Just a selection of cycles articles that have appeared in some of them. Please use the numbered heading links to visit the various blog articles all of which are concerned with medium to long term climate change. This is an important subject for future human welfare.
Posted by Ari Jokimäki on January 4, 2010
This is a list of papers on the role of Milankovich cycles in Earth’s climate, especially in past climate changes. The list is not complete, and will most likely be updated in the future in order to make it more thorough and more representative.
James Hansen has a new paper (a draft for review), “Paleoclimate Implications for Human-Made Climate Change.” We’ll discuss it in a future post. There’s a so-called “review” by Martin Hertzberg at WUWT in which he claims that Hansen fails to understand the Milankovitch cycles. But it’s Hertzberg whose understanding is a failure.
Roger Andrews states “In previous attempts to estimate how much global warming was solar and how much anthropogenic I used TSI, i.e. the sum of the amplitudes of all the solar cycles, to define solar forcing, with the implicit assumption being that all the solar cycles impact temperature in direct proportion to their amplitude. But now I’m going to assume that for reasons as yet unexplained some cycles have a larger proportionate impact than others.
So here I will attempt to match the global sea surface (SST) and surface air temperature (SAT) records using a phenomenological model that applies different forcings to each solar cycle. The cycles I used were Tim’s 426.5, 238.9, 112.5, 78.9 and 57.2 year cycles. The shorter 11-year cycles were ignored.”
[Note: I, Ray Tomes have also worked on teh same matters]
By Nick Anthony Fiorenza, ICECAP, June 3, 2011
Planetary warming has also been observed on Mars, Jupiter, Pluto, and on Neptune’s largest moon Triton during the decades following the peak of the “Solar Grand Maximum” – wonder why – there are no humans there! And Pluto is moving further from the sun in its orbit, thus it should be cooling, but instead it is warming. This is but one blatant indicator that suggests that the climate change on Earth is due to solar changes and our intersellar environment rather than mere human antics.
More importantly, the Sun is now changing from its Solar Grand Maximum to its Solar Grand Minimum. The Earth heats up after a Solar Grand Maximum, lagging a bit after the peak. With a Solar Grand Minimum now on its way, a “global cooling” may be on the horizon–a natural oscillation occurring in much longer solar cycles.
There’s really no doubt that astronomical cycles have influenced the growth and decay of ice on planet earth for the last 5 million years or so. The subject came up recently, and there seems to be a lot of confusion on the issue, so let’s take a closer look at the influence of astronomical factors on earth’s cryosphere.
First, how can we be sure that astronomical cycles have any influence at all? The answer is, that the growth and decay of ice shows cyclic influences with the same periods as astronomical cycles. The statistical significance is so high, and the synchronization so persistent, that frankly it’s pretty much impossible that there’s no relationship. And I think we can safely conclude that it’s not earth’s glacial changes that are causing the astronomical cycles.
Followed by part 2.