An Open Letter to the Telegraph’s Geoffrey Lean

Dear Geoffrey,

Like many commentators, you frequently use the phrase “Pre-Industrial Temperatures” – most recently in your piece today (Dec 13th) in the Telegraph on Cancun.  I should be grateful if you could clarify this term for me.

Do you mean the 17th Century, in the Little Ice Age, when the Thames frequently froze over for extended periods?  Or perhaps the Mediaeval Warm Period in the 12th Century, when Greenland was green, and grapes grew in Northern England?  The Dark Ages when the chill was comparable to the Little Ice Age?  Or the Roman Optimum in the 2nd Century, comparable to the Mediaeval Warm Period?

Perhaps you are thinking of the Holocene Maxima towards the beginning of the current Interglacial, when it was significantly warmer than today for extended periods?

Or are you perhaps going back 20,000 years to the last major glaciation, when the ice sheets covered much of Northern England?

On reflection, would you agree with me that the term “Pre-Industrial Temperatures” is meaningless, and that there is no obvious or natural baseline temperature against which to measure current variation, but rather that climate has always been cyclical and variable?  Do you see therefore how it is possible to interpret the slight warming over the last century as an entirely natural and predictable continuation of well-established natural cycles?

As Peter Simple used to say in the Daily Telegraph, “I only ask because I want to know”.

I should be glad of your comments.

Best regards.


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4 Responses to An Open Letter to the Telegraph’s Geoffrey Lean

  1. Mike Spilligan says:

    I was looking forward to a prompt comment from Lean, but no such luck. Instead may I add a couple of pertinent questions for him? What global mean temperature does Lean think the world should be? – and what is the correct level of CO2 in ppm? For the second question it might be helpful fror Lean to know that it has varied right up to 4,000 during the last 100 million years, and at around 160 photosynthesis ceases, so it seems we’re pretty low at 390.

  2. Roger, an excellent letter and one which identifies the types of spurious or misleading claims which are typically made by climate alarmists. It would be much appreciated, if you could post any feedback here? Also, perhaps a campaign of letters (to influential newspaper editors) about climate change would be worthwhile?

  3. J.Hadden says:

    Hi Mr.Helmer,
    your letter to Mr.Lean makes me think of
    a strategy I read about in Gerard K. O’Neill’s book , The
    High Frontier, to put Solar Power Satellites in geosynchro-
    nous orbit using material from the moon .Using Laurentian
    University’snew Lunabot to excavate lunar ore and an
    electromagnetic catapult to launch the ore into lunar
    orbit , then to use the energy of the sun to extract the
    silicon to make photo voltaic cells to make SPS’s and then
    place them in geosynchronous orbit to transmit low cost
    energy , with no greenhouse gases to every country on
    Earth , to heat our homes and businesses in the winter ,
    run air conditioning in the summer , charge up electric cars and provide power to desalination plants to make
    fresh water from ocean water for farms and towns and
    cities that need fresh water . Ad Astra’s VASMR plasma
    engine could be attached to a Nautilus Module to get us
    back and forth form the Moon ,nautilus modules can be
    put on the lunar surface for crew quarters . The Skylon
    vehicle will get you to Earth orbit , Dr.Ruth Bamford’s new
    force field will protect astronauts from cosmic radiation .
    Then, thousands of Robonauts teleremotely operated from
    the Earth will assemble the SPS’s in geo orbit . This will
    generate many good jobs . I hope you obtain and read a
    copy of The High Frontier , you’ll be glad you did .
    Cordially , J. Hadden

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