Sentences with phrase «volcanic eruptions injecting»

The two spikes around 1983 and 1993 were a consequence of volcanic eruptions injecting material into the stratosphere resulting in short term warming of the lower stratosphere.

This cooling influence occurs when large, explosive volcanic eruptions inject sulfate particles into the high reaches of the atmosphere (the stratosphere).

Explosive volcanic eruptions inject sulfur dioxide and dust high into the stratosphere, blocking some of the sun's energy from reaching the surface and causing it to cool.

Not exact matches

Now, research suggests that for the past decade, such stratospheric aerosols — injected into the atmosphere by either recent volcanic eruptions or human activities such as coal burning — are slowing down global warming.

The proposals mimic the aftermath of volcanic eruptions, when aerosols are naturally injected into the atmosphere.

Since the 1990s, scientists have been discussing using aircraft to inject aerosols, such as sulfates, into the atmosphere as a form of geoengineering to mimic volcanic eruptions that sometimes cool the planet by casting shades of particulate matter.

The Campanian Ignimbrite (CI) eruption in Italy 40,000 years ago was one of the largest volcanic cataclysms in Europe and injected a significant amount of sulfur - dioxide (SO2) into the stratosphere.

The several hundred million tons of CO2 that volcanic eruptions may be injecting into the atmosphere is indeed a large number — probably more than what the entire fleet of trucks in the UK could handle.

Biba mentions one proposal of this kind — injecting sulfates into the stratosphere to mimic a volcanic eruption.

In fact, the major effect of significant volcanic eruptions is cooling due to the sulfate aerosols that they release (although in order to have a significant cooling effect, the eruption has to be large enough that it injects the aerosols into the stratosphere where they can stay around longer... and it apparently helps if the eruption is reasonably near to the equator).

The 1991 volcanic eruptions (Pinatubo, Hudson) injected 23 Megatonnes of SO2 into the stratosphere, leaving a sulfurous cloud that circled the globe for about 2 years before finally settling out (together with a large quantity of fine particulate matter which rapidly settled out) The sulfurous cloud caused average global temperatures to drop by 0.55 deg.

· It will require a large - scale vertical eruption that injects volcanic dust into the stratosphere.

Climate engineering: To counter the effects of heat - trapping greenhouse gases, some experts have proposed artificially cooling the planet by injecting sulfates into the stratosphere, which would mimic the effects of a major volcanic eruption.

Proposals for addressing global warming now include geo - engineering whereby tiny particles are injected into the stratosphere to emulate the cooling effects of stratospheric aerosol of a volcanic eruption (Levitt and Dubner 2009).