Sentences with phrase «large volcanic eruptions cool»

Large volcanic eruptions cool global temperatures, but only for a couple of years.

Not exact matches

After large volcanic eruptions that pump sulphur dioxide into the atmosphere, such as that of mount Pinatubo in the Philippines in 1991, the planet cools for a year or two.

Researchers know that large amounts of aerosols can significantly cool the planet; the effect has been observed after large volcanic eruptions.

There have been large volcanic eruptions that have contributed to short - term cooling of Earth from the SO2 that reaches the stratosphere, which is what happened following the Philippines Mount Pinatubo eruption in June 1991.

Scientists have long known of the cooling effect of major volcanic eruptions, which spew large amounts of light - scattering aerosols into the stratosphere.

A few years ago, he was trying to get people to take to his idea of how to mitigate global warming by pumping sulfur dioxide into the stratosphere, mirroring the cooling effect caused by large volcanic eruptions.

It's also now well understood that large volcanic eruptions have a short - term cooling effect, see GW FAQ: effect of volcanic activity (short - term being the key phrase, after Church et al Nature 2005, and also http://www.llnl.gov/str/JulAug02/Santer.html)

We find an unprecedented, long - lasting and spatially synchronized cooling following a cluster of large volcanic eruptions in 536, 540 and 547 AD (ref.

The short - term variations are dominated by ENSO but also can be influenced by large tropical volcanic eruptions (such as occurred in 1963, 1982 and, markedly, 1991), so the years after those eruptions are anomalously cool.

If we take some notable volcanoes in the past 600 years (Figure 1), we can confirm that frost rings in bristlecone pines are good indicators of large explosive volcanic eruptions, similar to the known coincidence of hemispheric cooling evidenced in growth rings of European trees in the years around historically dated eruptions.

After a large volcanic eruption, the layer of sulfate aerosols in the stratosphere gets thicker, and we see, in the historic record, that the Earth cools down in response.

So the fine particles put high in the atmosphere of earth from a large volcanic eruption, cool the earth.

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).

And lots of people imagine we could be entering a cooler period in next couple decades, and most are not allowing or counting on, that we could have a large volcanic eruption as part of the mix.

It takes a couple of years for most of the aerosols from a large volcanic eruption to settle out of the air, so their cooling effect likewise lasts a couple of years.

It could be a relatively cheap, effective and quick way to cool the planet by mimicking the natural effects on climate of large volcanic eruptions, but scientists concede there could be dramatic and dangerous side effects that they don't know about.

There they reflect sunlight back into space, mimicking the influence of large volcanic eruptions that have temporarily cooled the planet in the past.

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

I excluded years which were strongly influenced by the El Chichón (1983 — 1985) and Mount Pinatubo (1992 — 1994) volcanic eruptions (because large eruptions release particulates into the atmosphere which cause a strong short - term cooling), and looked at the temperature trends in each of the three categories (Figure 1).

The interannual variability in the individual simulations that is evident in Figure 9.5 suggests that current models generally simulate large - scale natural internal variability quite well, and also capture the cooling associated with volcanic eruptions on shorter time scales.

The technique, which is known as «stratospheric aerosol injection», could cool the planet in a similar way to a large volcanic eruption.

This would replicate the cooling effect of large volcanic eruptions, which occasionally belch sulphur dioxide into the stratosphere.

Given the absence of large volcanic eruptions in the past two decades (the last one being Mount Pinatubo in 1991), multiple volcanic eruptions would cause a cooling tendency [196] and reduce heat storage in the ocean [197].

The basic science underlying this idea is pretty solid — large volcanic eruptions blast SO2 into the stratosphere where the sulfur aerosols naturally cool the globe for a few years.

The short - term variations are dominated by ENSO but also can be influenced by large tropical volcanic eruptions (such as occurred in 1963, 1982 and, markedly, 1991), so the years after those eruptions are anomalously cool.

Other factors that could adversely impact the correlation between the sun and temperature include time lags in the transposition of a climate impulse, or cooling events through sun - blocking aerosols from large volcanic eruptions.

There is very high confidence that models reproduce the general features of the global - scale annual mean surface temperature increase over the historical period, including the more rapid warming in the second half of the 20th century, and the cooling immediately following large volcanic eruptions...

Large volcanic eruptions increase the number of small particles in the stratosphere that reflect sunlight, leading to short - term surface cooling lasting typically two to three years, followed by a slow recovery.

We'd expect to see the imprint of this large error in comparisons with observed surface temperature changes over the 20th century (37 - 42), and in comparisons with the observed cooling after large volcanic eruptions (30, 43, 44).