Sentences with phrase «volcanic gases likely»

A similar fate may have befallen forests 252 million years ago, when massive bursts of volcanic gases likely weakened Earth's ozone shield.

Not exact matches

Life on Earth likely emerged in the deep ocean, where simple organisms fed off toxic gas from volcanic vents.

It has long been suspected that the low solar activity during the Maunder Minimum was one of the causes of the Little Ice Age, although other factors like a small drop in greenhouse gas concentrations around 1600 and strong volcanic eruptions during that time likely played a role as well.

First, while the early 20th century warming was likely predominantly naturally - caused (i.e. low volcanic activity and increasing solar activity), there was also a significant human contribution as greenhouse gas emissions began to ramp up.

But to quantify the influences (or «forcings» in climate jargon) even further, they considered three anthropogenic forcings — well - mixed greenhouse gases, sulfate aerosols, and tropospheric and stratospheric ozone — as well as two natural forcings — changes in solar irradiance and volcanic aerosols — all of which are likely to influence tropopause height.»

«although other factors like a small drop in greenhouse gas concentrations around 1600 and strong volcanic eruptions during that time likely played a role as well.»