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michael_nielsen's profile
michael_nielsen
michael_nielsen
michael_nielsen
@michael_nielsen

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michael_nielsen

@michael_nielsen

Searching for the numinous. Co-purveyor of https://quantum.country/ 

San Francisco, CA
michaelnielsen.org
Joined July 2008

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    1. michael_nielsen‏ @michael_nielsen 16h16 hours ago
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      I'm not wild about gotcha journalism. But geez I'd love to ask some of the people writing about climate some basic questions. What are total CO2 emissions per year? What percentage is due to the US? To China? To coal? To power generation?

      19 replies 14 retweets 181 likes
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    2. michael_nielsen‏ @michael_nielsen 16h16 hours ago
      • Report Tweet

      How does the impact of methane compare to CO2? How long does CO2 last in the atmosphere (& how do we know)? Etc. When reading I often have the sneaking suspicion that the person writing has no quantitative understanding at all of climate.

      6 replies 5 retweets 86 likes
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    3. David Deutsch‏ @DavidDeutschOxf 13h13 hours ago
      • Report Tweet
      Replying to @michael_nielsen

      What is the optimum long-term global mean temperature, compared with today's?

      4 replies 2 retweets 21 likes
    4. michael_nielsen‏ @michael_nielsen 13h13 hours ago
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      Replying to @DavidDeutschOxf

      Fun question. Though it's much more subjective than most of mine, which are questions of fact (or are meant to imply such - e.g., the question about lifetime of the CO2 in the atmosphere is a question absent human intervention. But, of course, we may intervene.)

      1 reply 0 retweets 1 like
    5. michael_nielsen‏ @michael_nielsen 11h11 hours ago
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      Replying to @michael_nielsen @DavidDeutschOxf

      Curious: do you have an answer? My guess: most people will give different answers. But there will be a substantial cohort of back-to-nature nostalgics whose answer is "the pre-industrial level".

      3 replies 0 retweets 7 likes
    6. michael_nielsen‏ @michael_nielsen 11h11 hours ago
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      Replying to @michael_nielsen @DavidDeutschOxf

      One curious thing: if we gain the ability to control CO2 / GHG / temp levels, that creates a very different governance problem: how to decide at what level to set the temp? (And ocean acidification). I can imagine a future in which we have conferences on CO2 levels being too low

      2 replies 1 retweet 5 likes
      michael_nielsen‏ @michael_nielsen 11h11 hours ago
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      Replying to @michael_nielsen @DavidDeutschOxf

      And people complain about the evil carbon capture / air-mining companies, driving CO2 levels down below 200 ppm, causing an ice age... when will it stop!

      5:07 PM - 10 Nov 2019
      • 1 Retweet
      • 4 Likes
      • ck Nishant Suri Osculation Spectral Memes Alexander Kruel
      2 replies 1 retweet 4 likes
        1. Carlos De la Guardia‏ @dela3499 11h11 hours ago
          • Report Tweet
          Replying to @michael_nielsen @DavidDeutschOxf

          Carlos De la Guardia Retweeted Carlos De la Guardia

          https://twitter.com/dela3499/status/1186287699306655754?s=21 …

          Carlos De la Guardia added,

          Carlos De la Guardia @dela3499
          Replying to @DavidDeutschOxf @Telegraph @JoeShute
          Given the future possibility of global cooling and ice ages, it’s fun to imagine an environmentalist movement with precisely the opposite carbon policies: - Burn more wood and coal! - You don’t fly enough! - We need more farting cows! - Carbon liberation, not sequestration!
          0 replies 0 retweets 1 like
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        1. Empathy Guru, Complex System Scientist‏ @PezeshkiCharles 11h11 hours ago
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          Replying to @michael_nielsen @DavidDeutschOxf

          That's a problem we don't have just yet. Just sayin'.

          0 replies 0 retweets 0 likes
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