Nyt videnskabeligt studie viser at udledningen af sod er en meget større årsag til klimaforandringerne end man hidtil har troet. Det giver anledning til at undersøge nye måder at bekæmpe klimaforandringerne på mens vi venter på mere ambitiøse mål for nedbringelse af CO2, men det er ikke ligetil.
WASHINGTON, 15 January 2013: Black carbon is the second largest man-made contributor to global warming and its influence on climate has been greatly underestimated (undervurderet), according to the first quantitative and comprehensive (omfattende) analysis of this pollutant’s climate impact.
Dobbelt så stor indflydelse på klimaet
The direct influence of black carbon, or soot (sod), on warming the climate could be about twice previous estimates (beregninger), according to an in-depth study published today in the Journal of Geophysical Research-Atmospheres.
Accounting for all of the ways black carbon can affect climate, it is believed to have a warming effect of about 1.1 Watts per square meter (W/m2), approximately two-thirds of the effect of the largest man made contributor to global warming – carbon dioxide.
Vigtig input til fremtidige studier af klimaet
The study, a four-year, 232-page effort, led by the International Global Atmospheric Chemistry (IGAC) Project, is likely to guide research efforts, climate modeling, and policy for years to come, the authors and other scientists familiar with the paper said.
“The report’s best estimate of direct climate influence by black carbon is about a factor of two higher than most previous work… This includes the estimates in the 2007 Intergovernmental Panel on Climate Change (IPCC) Assessment, which were based on the best available evidence and analysis at that time.
Læs mere her: http://www.agu.org/news/press/pr_archives/2013/2013-01.shtml
Læs videre fra: Scientists have spent the years since the last IPCC assessment improving estimates…
Studiet “Bounding the role of black carbon in the climate system: A scientific assessment” kan bestilles ved henvendelse til [email protected]
