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Takvera

Hi Matt,
this is a great piece of writing on the potential for a multi-metre sea level rise this century, especially articulating the impact on housing for the USA. I am preparing my own review and article on Hansen's paper and came across this piece. I am adding a link to this article, just in preparation now. You can check out my site at http://takvera.blogspot.com

Takver

Martin Gisser

It's quite amazing how fast the "conventional" view on sea level rise has changed.

3 years ago, there was a nice discussion at realclimate.org. Back then, 1m SLR was seen the upper bound. But assuming exponential decay of Greenland ice I found a SLR of 4 meter by 2100 would be unsurprising. (It didn't even need a pencil to do that math.) Gavin Schmidt's response:

[Response: I would be very surprised. 1 meter would already be a disaster, (...) - gavin]

http://www.realclimate.org/index.php/archives/2009/01/sea-will-rise-to-levels-of-last-ice-age/comment-page-1/#comment-110846

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Highlighted Research

  • Wind Power
    Especially see "Geographical and seasonal variability of the global "practical" wind resource (Applied Geography, 2013)."
  • "Global Warming: Understanding the Forecast" by David Archer
    Plug and Play Models - Not exactly typical research, more of an interactive tool, and you really should know the assumptions of the models...but still even if you don't, this is valuable...

Convert carbon dioxide (CO2) weight to carbon (C) weight

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CO2/3.67 = C 

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ex: 40 GtCO2 ≈ 10.9 GtC

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1 Gt (Gigatonne) = 1 billion tonnes

1 tonne = 1,000 kg

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Also: 1 Pg = 1 Gt

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1 Pg (Petagram) = 1 quadrillion grams

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Soil specialists tend to use Pg, as they are used to working with gram units per square meter of soil area. Atmospheric specialists tend to use Gt. 


Convert carbon emissions to ppm atmospheric CO2

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GtC/2.12 = ppm

To convert emissions of carbon to atmospheric ppm CO2, carbon sinks must be taken into account. 

So far, terrestrial and oceanic sinks have taken up about 50% of CO2.

source

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ex: 40 GtCO2 emissions ≈ 10.9 GtC

10.9 GtC/2.12 ≈ 5.14 ppm CO2 before accounting for sinks

5.14 ppm CO2 x 0.5 ≈ 2.57 ppm CO2 after accounting for sinks

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