Sentences with phrase «emitted by volcanoes»

This is what the US Geological Survey says: «Human activities release more than 130 times the amount of CO2 emitted by volcanoes».

All of the carbon in the world was emitted by volcanoes.

They analyzed ozone measurements taken from weather balloons and satellites, as well as satellite measurements of sulfur dioxide emitted by volcanoes, which can also enhance ozone depletion.

Aerosols can also have a cooling effect, if they are bright, like the sulfate particles emitted by volcanoes.

Not exact matches

Essentially, sulfur dioxide gets emitted near the surface, either by a coal - fired power plant's smokestack or a volcano.

On Earth, methane is emitted by two sources: living creatures, such as cows, and geological formations, such as mud volcanoes.

Under the ocean this job is much more difficult, as the electromagnetic energy emitted by satellites can not penetrate the sea surface and instruments are much more difficult to set up on the volcano itself.

Sulfate is emitted by human activities in addition to natural emissions such as volcanoes.

That's because they underwent a process in which silica — likely emitted by a nearby volcano — saturated the tree and took on the shape of the wood's internal structure as it decayed, preserving its 3D cellular structure.

(which I assume is intended to be read by someone with technical knowledge of climate modeling jargon) is that I've started wondering about how climate models handle volcanoes or geology like the Yellowstone caldera — regularly emitting «point sources» that transfer their climate effects globally.

Io's thin atmosphere collapses as the sulfur dioxide gas emitted from volcanoes freezes when shaded by Jupiter.

So, if each underwater artic volcano emitted 1 km3 a week (a rather large average flow) and did it for a year (about 52 weeks) you would need about 620 very active and extremely powerful volcanoes in order to warm the artic ocean by just 1 C (and that ignores surface cooling, in / out water flows and time rates that would require even more volcanoes.)

The amount of CO2 added to our atmosphere by terrestrial volcanoes is estimated to represent only a small fraction of that emitted by humans, but the total amount entering our climate system via the ocean from submarine volcanoes and fissures in the Earth's crust is unknown.

In fact most recent estimates show that the flights that were grounded by the eruption would have emitted about twice as much CO2 as the volcano itself.

So do volcanoes, by emitting hot rocks that warm the air and ejecta that shade the Earth from the Sun and cause cooling.

Plimer was by far not the first to show that (but he should know that volcanoes emit less than 1 % of human emissions).

-- Volcanoes and vents emit less than 1 % of human emissions (even the Pinatubo eruption caused a dip in the CO2 increase, as the cooling by the volcanic dust increased the absorption of the oceans beyond the extra emissions.

Plimer (a geologist) had estimated that these emit more CO2 than humans, although the known volcanoes (mostly above land) only emit a small fraction of that emitted by humans.

Human activities emit 60 or more times the amount of carbon dioxide released by volcanoes each year.

Satellite tots up volcanic heat «Robert Wright and Luke Flynn from the University of Hawaii in Honolulu used the NASA satellite MODIS (Moderate Resolution Imaging Spectroradiometer) to measure the heat emitted by the world's 45 most active volcanoes,»