Jump to content
Thunder?
Local
Radar
Pollen
IGNORED

Cooling climate


tynevalleysnow
 Share

Recommended Posts

Posted
  • Location: Near Allenheads,1400 feet up in northumberland
  • Location: Near Allenheads,1400 feet up in northumberland

    Just read the book Cold sun by John Casey. Some convincing evidence that we are heading into a climate like the Dalton minimum. Plenty of top climate and solar scientists agree and even NASA forecasting sun cycle 25 to be a grand solar minimum. The book was released in 2011 and the signs he mentioned in the book have happened. Anyone else with any thoughts regarding this?

    Link to comment
    Share on other sites

    • Replies 6
    • Created
    • Last Reply

    Top Posters In This Topic

    Popular Days

    Top Posters In This Topic

    Posted
  • Location: Camborne
  • Location: Camborne

    Just read the book Cold sun by John Casey. Some convincing evidence that we are heading into a climate like the Dalton minimum. Plenty of top climate and solar scientists agree and even NASA forecasting sun cycle 25 to be a grand solar minimum. The book was released in 2011 and the signs he mentioned in the book have happened. Anyone else with any thoughts regarding this?

     

    Haven't read the book so can't really comment. Perhaps some expansion on, "some convincing evidence that we are heading into a climate like the Dalton minimum" may help.

    • Like 3
    Link to comment
    Share on other sites

    Posted
  • Location: Mytholmroyd, West Yorks.......
  • Weather Preferences: Hot & Sunny, Cold & Snowy
  • Location: Mytholmroyd, West Yorks.......

    I suppose such thoughts might have made sense before we discounted the notion that the sun alone could be instrumental in such changes? Surely we all now know , well enough?, that it takes a combination of GHG's, particulate and sulphate atmospheric inclusions and solar ( along with 'natural cycles' of course!).

     

    Today our GHG burden is heading towards twice that of the Dalton min, we see Asia beginning to clean up it's emissions and Natural cycles are heading toward a switch positive. We also have an Arctic that has become a positive energy forcing over late spring, summer and early autumn ?

     

    Sadly we cannot look to the heavens for help.

    Link to comment
    Share on other sites

    Posted
  • Location: Beccles, Suffolk.
  • Weather Preferences: Thunder, snow, heat, sunshine...
  • Location: Beccles, Suffolk.

    Haven't read the book so can't really comment. Perhaps some expansion on, "some convincing evidence that we are heading into a climate like the Dalton minimum" may help.

    A global fall of temperature would be ideal evidence, too...

    • Like 1
    Link to comment
    Share on other sites

    Posted
  • Location: Ribble Valley
  • Location: Ribble Valley

    A global fall of temperature would be ideal evidence, too...

    Now, now are you saying the LIA was global, because if not then why would this be. Personally I think the. LIA was global and it's only a lack of reliable proxies in the SH which says different. Still we have a real time lab event so one way or the other we will all find out. Edited by Sceptical Inquirer
    Link to comment
    Share on other sites

    Posted
  • Location: Camborne
  • Location: Camborne

    I thought the DM was global and strongly influenced by volcanism. Tambora came in the middle.

     

     

    Abstract

    The Dalton Minimum (1790–1830) was a period with reduced solar irradiance and strong volcanic eruptions. Additionally, the atmospheric CO2 concentrations started to rise from the background level of previous centuries. In this period most empirical climate reconstructions indicate a minimum in global or hemispheric temperatures. Here, we analyse several simulations starting in 1755 with the coupled atmosphere-ocean model ECHO-G driven by different forcing combinations to investigate which external forcing could have contributed most strongly to the reduced temperatures during the Dalton Minimum. Results indicate that on global and hemispheric scales, the volcanic forcing is largely responsible for the temperature drop in this period, especially during its second half, whereas changes in solar forcing and the increasing atmospheric CO2 concentrations were of minor importance. At regional scales, especially the extratropical, the impact of volcanic forcing is much less discernible due to the large regional variability, a finding that agrees with empirical temperature reconstructions.

     

    http://link.springer.com/article/10.1007%2Fs00382-005-0029-0#page-1

    Edited by knocker
    Link to comment
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
     Share

    ×
    ×
    • Create New...