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Ian Plimer’s ‘Heaven + Earth’ — Checking the Claims - page 28 / 64

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135.

p. 229: Differences of about 3% occur between the farthest point (aphelion) and the closest point (perihelion). This 3% difference in distance means that Earth enjoys a 6% change in solar activity between January and July. When the Earth’s orbit is the most elliptical, the solar energy at the perihelion is some 20 –30% more than at the aphelion.

These cyclical changes in the

climate.

t present, the orbital

amounts of eccentricity

solar energy received by the earth influence is nearly at the minimum of its cycle.

is remarkably similar to

Today a difference of only about 3 percent occurs between aphelion (farthest point) and perihelion (closest point). This 3 percent difference in distance means that Earth experi- ences a 6 percent increase in received solar energy in January than in July. This 6 percent range of variability is not always the case, however. When the Earth’s orbit is most el- liptical the amount of solar energy received at the perihelion would be in the range of 20 to 30 percent more than at aphelion. Most certainly these continually altering amounts of received solar energy around the globe result in prominent changes in the Earth’s climate

and glacial regimes. cycle. from:

t present the orbital eccentricity is nearly at the minimum of its

http://www.homepage.montana.edu/ geol445/hyperglac/time1/milankov.htm Since the Montana document is undated, there is no indication who is failing to quote whom, but since the 6% variation is a change in received solar energy and not a change in solar activity, Plimer’s version looks like a clumsy (minor) rewording of the Montana version.

136.

pp. 457–461: The account of failed predictions of ‘The End Of The World’ closely fol-

lows

ppendix 3 of

n Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and

Supernatural by James Randi, from:

http://www.randi.org/encyclopedia/appendix3.html

Plimer starts with the same biblical ‘prediction’, and mostly follows Randi’s list. Plimer’s footnote 2200 recommends a 1990 book by James Randi as good summary of end of world ideas, some of which are used herein . . . . Not only ‘the ideas’ are used, but also

some large chunks of sentences.

Contributed comments

This section contains contributions from Tim Lambert from the list on his Deltoid blog [TL], Steven Sherwood [SS], and Penny Whetton. The source of each item is indicated by the author’s initials. This section and the following section have comments in outline form. Where I have expanded this type of contribution to a more complete version it is in the main list.

  • 137.

    Figs. 1, 3 and 4 are all very inconsistent, esp. 1 and 4 which purport to use the same dataset (HadCRU3). [SS]

  • 138.

    p. 113: claim that research shows cosmic rays are important for cloud formation are not supported by the cited studies; some of the studies (Udelhofen and Cess) claimed to support relationship between cloud and cosmic rays actually refute it — [SS].

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