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Recent content by mark_in_seattle

  1. mark_in_seattle

    What is the current thinking regarding "Atmospheric Carbon Clearing Time": 300 years, 900

    @moltenmetal I watched the YouTube video at the link you provided, with the animation of the complex Carbon Cycle... useful. Thank you. FYI, as complex as that video demonstrated, in comparison, a similar animation of the various and myriad ocean carbon cycles modeled by oceanographers would...
  2. mark_in_seattle

    What is the current thinking regarding "Atmospheric Carbon Clearing Time": 300 years, 900

    Thank you to all who have posted replies so far. Good info and a useful survey of opinions on the subject. @ironic metallurgist We can disagree on the cost/benefit considerations of personal transportation vs. public transportation, which I am guessing is one of your points: that EV's still...
  3. mark_in_seattle

    What is the current thinking regarding "Atmospheric Carbon Clearing Time": 300 years, 900

    I am probably not qualified to consider the merits of your "...half life of Co2 in the atmosphere ..." conjecture, but I will research it as you suggest, thank-you. Can only add that the science journal articles I've read on the topic of atmospheric carbon clearing time have all concluded it...
  4. mark_in_seattle

    What is the current thinking regarding "Atmospheric Carbon Clearing Time": 300 years, 900

    THESIS: Reducing Co2 emissions toward zero (except for us all exhaling) is a necessary goal but hardly sufficient. Even if we were all perfect zero Co2 emission angels, our future is bleak unless we can terraform our planet to shorten earth's natural "Atmospheric Carbon Clearing Time". It's a...
  5. mark_in_seattle

    SkyCiv

    I've only used SkyCiv online structural design software for a couple days. It has been very useful though and I am seriously looking to purchase the reasonably priced contract, at least month to month, until I have more experience using it for a variety of design problems. The portal frame...

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