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View Diary: Rapid melt spreads to NW Greenland, 400ppm CO2 may melt cap (226 comments)

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  •  Fish, you've got to temper these diaries, (0+ / 0-)

    you're scaring the kids. Or rename the series "Apocalypse Thursdays".

    "Ignorance breeds monsters to fill up the vacancies of the soul that are unoccupied by the verities of knowledge." H Mann

    by the fan man on Fri Mar 26, 2010 at 05:01:23 AM PDT

    •  Melting ice isn't the apocalypse (5+ / 0-)

      I try very hard to present the data and research results in a way that doesn't exaggerate the consequences.

      The geologic record is a ruthless teacher. The public's lack of understanding of geologic history is one of the reasons we are responding so slowly and ineffectively to climate change.

      look for my DK Greenroots diary series Thursday evening. "It's the planet, stupid."

      by FishOutofWater on Fri Mar 26, 2010 at 05:31:32 AM PDT

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      •  A 50 to 80% melt of the Greenland icesheet (2+ / 0-)
        Recommended by:
        RunawayRose, G2geek

        is enough of an event to trigger palpitations. (Over what time frame someone asked, not immediately clear from the diary?) It's one study under discussion. We're going to overshoot 400 (possibly 500) under every scenario other than a true outlier event so it's the equivalent of "game over" for many here. If you think I'm exaggerating, look at the comments. Lots of fear and more than a smattering of hopelessness, not a lot of let's get moving and change things. May I suggest including one action item or solution being offered at the end of these diaries. (I know it's not your thing, you present the problem primarily.) Thanks.

        "Ignorance breeds monsters to fill up the vacancies of the soul that are unoccupied by the verities of knowledge." H Mann

        by the fan man on Fri Mar 26, 2010 at 06:07:15 AM PDT

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      •  Mentioning the timelines matters (1+ / 0-)
        Recommended by:
        FishOutofWater

        There've been two many bad movies like "The Day After Tomorrow" that lead many casual pop culture audiences to believe that things like "ice sheet collapse" has a meaning that is temporally quick, rather than something multi-generational.

        The way I explain it is this: ice domes are essentially what you get when snow stops melting in an area over the summer. Next year's snow piles up, and then the year after that's, and so on and so on for centuries. The snow reflects sunlight and cools off the areas around it, and the "ice dome" spreads and spreads over thousands of years until the edges stop cascading.

        So since you've got a giant snowpile in essence that consists of thousands of years of snow, it often takes thousands of years (or at least many hundreds) for it all to melt! It is like winter to spring on a semi-cosmic scale.

        If apes evolved from humans, why are there still humans?

        by Bobs Telecaster on Fri Mar 26, 2010 at 09:03:33 AM PDT

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