Sentences with phrase «toward atmospheric levels»

As I explained in a recent Nature online article, the latest IPCC report finds that, absent a sharp reversal of BAU trends, we are headed toward atmospheric levels of carbon dioxide far exceeding 1,000 parts per million by 2100.

Not exact matches

Starting with zero atmospheric LW absorption, adding any small amount cools the whole atmopshere towards a skin temperature and warms the surface — tending to produce a troposphere (the forcing at any level will be positive, and thus will be positive at the tropopause; it will increase downward toward the surface if the atmosphere were not already as cold as the skin temperature, thus resulting in atmospheric cooling toward the skin temperature; cooling within the troposphere will be balanced by convective heating from the surface at equilibrium, with that surface + troposphere layer responding to tropopause - level forcing.)

(Keep in mind that various experts and groups have said risks of centuries of ecological and economic disruption rise with every step toward and beyond 450 parts per million, with some scientists, most notably James Hansen of NASA, saying the long - term goal should be returning the atmospheric concentration to 350 parts per million, a level passed in 1988.)

All of this is reason for everyone and his brother, aunt and sister to greatly reduce their own GHG emissions, and to scream bloody murder till every corporation, institution and governmental body they have any influence over to immediately institute policies to rapidly bring down GHG emissions and look at reliable ways of drawing down atmospheric CO2 levels directly (especially replanting grasslands in the north, tree planting toward the equator where albedo change is not an issue).

The study shows that satellite observations of atmospheric carbon dioxide levels are a useful tool toward understanding how semiarid ecosystems will respond to climate change in the future.

The spark for this storm is a piece of atmospheric energy at the mid and upper levels of the atmosphere, which spun its way toward the Gulf of Mexico on Thursday night, igniting a round of severe thunderstorms in Louisiana, Mississippi and other states.