View Poll Results: GW in 2100

Voters
23. You may not vote on this poll
  • 1.5 degrees C or less

    5 21.74%
  • 2 degrees

    4 17.39%
  • 2.5 degrees

    3 13.04%
  • 3 degrees

    3 13.04%
  • 3.5 degrees

    2 8.70%
  • 4 deg\rees

    2 8.70%
  • 4.5 degrees

    0 0%
  • 5 degrees

    0 0%
  • 5.5 degrees

    1 4.35%
  • 6 degrees or more

    3 13.04%
Results 1 to 30 of 223

Thread: Global warming in 2100

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #12
    Join Date
    Oct 2001
    Location
    British Columbia
    Posts
    2,950
    The combustion products have different radiative forcing effects. CO2 has a positive value (enhances warming), but sulfate aerosols and volatile organic carbon emissions that form secondary organic aerosols have a negative value.

    The postwar global cooling, if I remember correctly, has been largely attributed to a larger magnitude of these negative values than the effect of the CO2. But they are relatively short lived in the atmosphere compared to CO2, so as sulfate emissions declined due to clean air measures, while CO2 continued to rise, the net effect became a positive forcing value.

    ETA: I note that profloater had already concluded this in post #175 (for the local condition).
    Last edited by Torsten; 2019-Jun-09 at 06:56 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •