9711

Best Effort Global Warming Trajectories

This is a "what if" tool for global warming policy makers. The policy contains just two parameters: the approximate number of (transition) years needed by the world to firmly decrease its annual carbon emissions, and the maximum annual emission reduction effort after that time, expressed in terms of Pacala–Socolow "wedges". Here "effort" is the additional emission reduction effort after all increases of future energy demands have already been stabilzed by carbon-free technologies. (So the Pacala–Socolow seven-wedge strategy is an immediate strategy of zero transitions/zero wedges for the next 50 years).
The purple curve is the world's annual carbon emission rate, the blue curve is the trajectory, and the black dashed line is the popular "doubling" target ceiling. All three curves share the same ordinate. The unit GtC stands for billions of metric tons of carbon.

SNAPSHOTS

  • [Snapshot]
  • [Snapshot]
  • [Snapshot]

DETAILS

The world carbon cycle model is based on the one-tank model of Socolow–Lam: , where is time (years) offset from the start of the 21st century, is carbon in atmospheric in GtC (divide by 2.1 to get ppmv, parts per million by volume), is the annual emission rate (GtC/yr), and τ is CO2 atmospheric resident time. The value of is constrained to be always larger than times the number of wedges ("wedge" as defined by Pacala–Socolow), and the maximum effort is reached after t is larger than "transition years" (the approximate number of years needed by the world to make firmly negative). For more information, see [1]. For the Socolow–Lam paper, see [2].
References
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.









 
RELATED RESOURCES
Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Step-by-step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in Step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Powered by Wolfram Mathematica © 2014 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+