Sentences with phrase «aerosol concentrations rose»

Not exact matches

By analyzing satellite data and other measures, Daniel and his colleagues found that such aerosols have been on the rise in Earth's atmosphere in the past decade, nearly doubling in concentration.

In other words, there is some value that can be assigned to aerosol cooling that offsets high temperature sensitives to rising CO2 concentrations enough to mathematically spit out temperatures sortof kindof similar to those over the last decade.

But here's the problem: when the concentration of aerosols is reduced — and they have to be; many of them are poisons pure and simple — the total «greenhouse forcing» will rise rapidly unless the non-CO2 gases, as well as soot, are also reduced, and just as quickly.

This study of course does not take away very different concerns related to stratospheric aerosol SRM geoengineering, like possible damage to the ozone layer [which in turn would be good news if you hate waiting for that spring tan] and the fact that allowing CO2 concentrations to keep rising presents other problems, like the necessity to never stop with the active process of SRM geoengineering, and increasing ecological damage caused by ocean acidification.

In other words: Proposed strategies to alter the amount of sunlight hitting the Earth's surface by (for example) deliberately injecting millions of tons of sulfate aerosols into the stratosphere pose enormous risks and uncertainties and don «t address the underlying causes of global warming or other major risks from rising concentrations of carbon dioxide, such as ocean acidification.

That is, there is still a fair chance that we can «hold the 2 °C line», if strong mitigation of greenhouse gases is combined with the following three actions: (i) a slow, rather than instant, elimination of aerosol cooling, (ii) a directed effort to first remove warming aerosols like black carbon, and (iii) a concerted and sustained programme, over this century, to draw - down excessive CO2 (geo - and bio-engineering) and simultaneously reduce non-CO2 forcings, such that the final equilibrium temperature rise will be lower than would otherwise be expected on the basis of current concentrations.