The Race Past 400ppm Continues…

…with a new Record High. The Keeling Curve atmospheric CO2 at Mauna Loa measured 402.84 parts per million (ppm) on May 31st, and the May average will soon be announced. A year ago, the May average was 399.76 ppm. Two years ago it was 396.78 ppm; in 2004 it was 380.63 ppm; in 1994 it was 361.68 ppm. Atmospheric CO2 ppm is not just increasing — it is accelerating. In the meantime, government officials fail to address this emerging problem which will raise ocean levels,  intensify weather, and destroy crops. This puts everyone at risk, not just of ‘inconvenience’, but of species collapse.

click on chart to see Keeling Curve at Scripps (ucsd.edu)

Aviation has an exceptionally high rate of CO2 production. An hour spent on a commercial airliner is roughly equivalent to ten hours spent driving a car. In fact, a concerned citizen who minimizes energy consumption can destroy all of their gains by just one long-distance flight. Substituting biofuels is not a solution, as biofuels still contribute to the growing CO2 levels, which are now far beyond what any humans have ever experienced. The only real solutions will include aggressive actions to reduce aviation, such as:

  • the imposition of steep aviation fuel taxes (or an overall carbon tax);
  • the curtailment of aviation subsidies that encourage excessive air travel, especially by businesses and corporations;
  • substantial reduction of air cargo shipment, especially those on all-cargo fleets;
  • and, a careful management of the overall aviation system, to eliminate fuel-inefficient doglegs such as are done when Super-Hubs are used (Atlanta, O’Hare, DFW, Newark, and Charlotte, are among the worst).