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View Diary: eSci: Incredible Movie of Likely Flowing Water on Mars (100 comments)

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  •  we'll have to terraform Earth at this rate (10+ / 0-)

    Find some way of scrubbing CO2 out of the atmosphere, moving entire ecosystems a thousand miles or more poleward, passive cooling on the scale of square miles, and trying to keep declining rainfall available to plants.

    •  not declining rainfall (2+ / 0-)
      Recommended by:
      marleycat, Larsstephens

      warmer planet = more heat-of-vaporization = more water in the air = more water getting dropped.  The problem is, it's going to come in different places than it used to, forcing farms to relocate.  It's also coming in the form of more powerful storms, like we're seeing now.

      Global warming is the inconvenient truth, nuclear power is the inconvenient alternative.

      by eigenlambda on Thu Aug 04, 2011 at 03:08:36 PM PDT

      [ Parent ]

      •  evaporation can go both ways (5+ / 0-)

        A desert is defined as any place where evaporation + transpiration (water loss from plants) is greater than precipitation.  The hotter it is, the greater your evaporation and transpiration, so the less good an inch of rain will do you.  The boreal forests of Canada and Siberia are the world's largest biome and have more carbon locked up in biomass than every other biome put together, including the tropical rainforests.  They also don't get much more rain than Mediterranean climates do.  But thanks mainly to low temperatures, an inch of rain goes a lot further up there.

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