About Tim

My name is Tim Channon, live in southern England. Today I am in my 60s, a lot of life and experience has flowed past.

My background is very wide and varied, one of those people who just do things, if you don’t know, find out which is all part of lifelong learning. Life ought to be fun and technical things most of all.

Tallbloke needed helping out, we seem to get on well enough and I have plenty to give so he can get some breathing space for a life. I’m trying to keep the flavour of his site.

I do have my own blog (link), largely non-controversial. Some items are cross posted on the Talkshop.

Comments
  1. Looks like you know spectral DBs . I’m looking for feedback on my http://cosy.com/Science/ColoredBalls.html .

  2. tchannon says:

    There are contributors here who are far more into the contentious world of radiative surface physics. Looks like a good one for an article here when things are less busy, get more eyes on the problem.

    Suggestion: radiation plots ought to be done log:log scale, straight lines will appear.

    I’ll have another look when I need a rest.

  3. Jim Brock says:

    I liked Tallbloke’s pictures of sailing ships, and noted the HMS Trincomalee. When I lived in the Seattle area, we used to take our boat up to British Columbia and our route took us through Trincomalee Passage. Named after the ship?

    [Reply] Thanks Jim. See http://www.hms-trincomalee.co.uk/historic/navy/royal-navy-service.php section: ‘Second Commission’ – TB

  4. Frazer Irwin says:

    I was a cadet on TS Foudroyant (HMS Trincomalee) in 1959 when moored in Portsmouth Harbour. Have followed the Old Lady ever since. Saw her before the refit in Jackson Dock. Have a large piece of timber plus ship’s nail recovered from that time.

  5. Robin says:

    Just found this site. Very interesting. I’ve looked at many climate time series for years, and have done a great deal of work on CET, so this caught my eye. Would like to contact someone (Tim?) to learn a bit more about whether Hurst rescaling is often used on climate data. I’ve made literally thousands of cusum plots but never formally analyses my conclusions – one of which is that temperatures – such as CET or North Altlantic area temperatures – are predictable in the long term. Substantial step changes seem to abound. Have you any comments?

  6. GregG says:

    Tim – Love the debates going on within this site. Also love the Matchless 500. I’m also in my 60′s and almost broke my ankle starting a friend’s ’53 Matchless 350, even using the pressure release lever. I got thrown into the air when it backfired.
    I can imagine that starting a 500 is almost as dangerous as riding one.

    I’m a solar engineer (Aerospace) and have been intrigued by the global climate following the cycles of the sun. I had to study the solar cycles and subsequent radiation, when designing solar panels to withstand that radiation in the space environment. It became fairly obvious to me that the global climate was not just following CO2 production, but also the solar cycles. Now that I’ve studied it more, I truly believe that the sun is the driver and CO2 one of the passengers.

    I love your site where experts more fluent in solar radiation than I can hash it out and explain it in better detail. Why the plasma cycles exist in the first place appears to be related to gravitational fields exerted on the sun by the planets (especially Jovian). The details really don’t matter as much as how they affect the electromagnetic radiation and how that radiation affects us on earth.

  7. ktwop says:

    Thanks for the “reblogs”.
    Tallbloke’s Talkshop is one of my regular ports of call.
    My interests are rather eclectic so my site is nowhere near as focused as this site is.

    Thanks for the great posts. Helped me out a lot. Rog TB

  8. Tim, Here’s course you might be interested in! I wonder if they’ll be covering the recent ship of fools debacle. http://www.exeter.ac.uk/climatechangecourse/

  9. Rob Sparrow says:

    In order for sea levels to fall nearly 400 feet during a glacial cycle a huge volume of water has to be transported to the poles and deposited as snow. How does this happen except by increased cloud cover? Could the net cooling effect of clouds explain the sharp transition from a warming phase to a cooling one in the interglacial cycle i.e. the albedo effect of ice gets less and less and with greenhouse gas positive feedback, the oceans warm. They try to cool by evaporation but the atmosphere has a limit on how much water vapor it can hold before clouds start to form.

  10. tchannon says:

    Rob Sparrow, you are way off topic. Answering does no harm.

    You are writing about one of the great mysteries, not satisfactorily explained by anyone.

    One of the more interesting ideas to me is the late Marcel Leroux’s suggestion that land topography such as mountains affect air movement, which it does and mountains of ice would do the same.

    His books are horribly expensive, in few libraries.
    A 1993 paper touching on this might appear in a Google search on the following line

    The Mobile Polar High: a new concept explaining present

    Extract from conclusion
    “The polar latitudes appear as the key control
    of the earth climate, in the past as in the present:
    they observe the highest variations of insolation,
    they store the captured water potential, they gwe
    the MPHs their initial power, and thus they gov-
    ern the Intensity of the general circulation, at the
    seasonal scale as at the palaeochmatic scale”

    This is not necessarily right but is likely to be involved to some degree. How cloud is involved, good question.

  11. Rob Sparrow says:

    Thanks for your reply. I probably, like you, were educated in science at a UK University. We are both in our sixties. I spent most of my working life servicing the High Energy, Nuclear and Astro Physics communities so am well aware of big egos and a certain economy of the truth. I chose to emigrate to the USA 30 years ago and only recently have become interested in the issue of interglacial cycles.The climate change environment is something totally different. The level of ignorance with respect to Milankovitch, Missoula, Agassiz etc. is truly amazing.
    At Grammar School I had to do a course based on a book entitled “Straight and Crooked Thinking ” by Robert Thouless – How I wish politicians, scientists and the general public would read and comprehend this book.
    From what I have learned so far the most critical issue is the sharp transition from warming to cooling. It seems too sharp for either an obliquity or precession effect hence my question on cloud albedo.

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