Not exact matches
You might notice cultures that live near mountains / volcanoes have their own set
of myths that include why a natural disaster like a
volcanic eruption would befall them, vs. christianity / judaism that makes no mention
of volcanic activity
because that culture didn't have to deal with it.
That could be significant for life,
because the cycling
of elements into Earth's crust and out
of volcanic eruptions helps keep our planet habitable by stabilizing atmospheric temperature.
Because of the high temperature in the inner parts
of Earth's mantle, the CO2 is released back into the atmosphere during
volcanic eruptions.
Galapagos
volcanic activity has been difficult to understand, Toomey said,
because conventional wisdom and modeling say newer
eruptions should be moving ahead
of the plate, not unlike the long - migrating Yellowstone hotspot.
Yesterday evening, IMO noted on its website that «there are no signs
of ongoing
volcanic activity,» but the alert will remain red for the time being
because «an imminent
eruption can not be excluded.»
But even before then, the Quitobaquito pupfish had broken from the main branch
of desert pupfish
because a
volcanic eruption altered the drainage
of the region and cut off the southern population from the rest.
Tracking the ozone layer's recovery process is tricky
because natural phenomena such as
volcanic eruptions and weather variations can alter the size
of the ozone hole.
Because of the stratospheric warming episodes following major
volcanic eruptions, the trends are far from being linear.
Because of Io's low gravity, large
volcanic eruptions produce an umbrella
of debris that rises high into space.
Time Safari is anxious to avoid disrupting the flow
of history, however, and the allosaur being hunted (it's the same one each time) was chosen
because it was about to be killed by a
volcanic eruption anyway.
The climate system evolves in time under the influence
of its own internal dynamics and
because of external forcings such as
volcanic eruptions, solar variations and human - induced forcings such as the changing composition
of the atmosphere and land - use change.»
Thus, Victor the Troll, to contradict all that you wrote @ 221, «the dissipation
of aerosols from any given
eruption IS caused by a lack
of volcanic activity,» and global temperatures CAN «rise above (the) level» «they would have been had the volcanoes not occurred»
because the impact
of previous volcanism would have also dissipated in the interval.
In other words, if we are after a cause (or causes) for the temperature increase during the period in question, the presence or absence
of aerosols from
volcanic eruptions is beside the point,
because they can not explain any increase in temperatures that occurred prior to any cooling effect they might have had.
Re: tropical vs high latitude
volcanic eruptions — I know the effect is likely negligible, but tropical locations are selected for launches into space
because of centripetal force, right?
Scenario A was described as «on the high side
of reality,»
because it assumed rapid exponential growth
of GHGs and it included no large
volcanic eruptions during the next half century.
So
because the Earth was much warmer many millions
of years ago and the Earth's climate has naturally changed due to asteroid impact,
volcanic eruptions, changes in the solar flux, the emergence
of plants which produced ~ 20 % oxygen content in the air and which in turn allowed animals to evolve, there's just no way that 7 billion humans can cause any problem at all.
A true «prediction» can't be made
because the result will depend on the future
volcanic eruptions and other influences on albedo, but you can run the model for each
of a couple dozen stochastic processes for the future
volcanic activity.
«Barring a large
volcanic eruption, a record global temperature clearly exceeding that
of 2005 can be expected within the next few years, at the time
of the next El Nino,
because of the background warming trend attributable to continuing increases
of greenhouse gases.»
Changes in sea level vary around the world and over time,
because of the effects
of ocean cycles,
volcanic eruptions and other phenomena.
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).
Note: The period
of 1995 to present was used in the following graphs
because there have been no explosive
volcanic eruptions since 1995 to add unwanted noise to the data.
Their projections are not even in principle forecasts
because the modelers have no way
of knowing what exogenous events such as major
volcanic eruptions might occur.
The most likely candidate for that climatic variable force that comes to mind is solar variability (
because I can think
of no other force that can change or reverse in a different trend often enough, and quick enough to account for the historical climatic record) and the primary and secondary effects associated with this solar variability which I feel are a significant player in glacial / inter-glacial cycles, counter climatic trends when taken into consideration with these factors which are, land / ocean arrangements, mean land elevation, mean magnetic field strength
of the earth (magnetic excursions), the mean state
of the climate (average global temperature), the initial state
of the earth's climate (how close to interglacial - glacial threshold condition it is) the state
of random terrestrial (violent
volcanic eruption, or a random atmospheric circulation / oceanic pattern that feeds upon itself possibly) / extra terrestrial events (super-nova in vicinity
of earth or a random impact) along with Milankovitch Cycles.
Lamarche was interested in the high elevation sites for historical reasons (he had done erosion work at the Mt Washington site), and
because of his interest in «frost rings» that had been linked to post (
volcanic)
eruption cooling.
The climate system evolves in time under the influence
of its own internal dynamics and
because of external forcings such as
volcanic eruptions, solar variations and human - induced forcings such as the changing composition
of the atmosphere and land use change.
Namely, that this cold period happened
because of four violent
volcanic eruptions.
The other is that I've corrected for more than just el Niño; I've adjusted for solar variations and
volcanic aerosols too, so my correction removes the 1992 dip which was
because of the
eruption of the Mt. Pinatubo volcano.
The unrelated, noncyclical events that reduce hurricane activity, including
volcanic eruptions, have masked a progressive rise in sea temperatures
because of global warming, he said.
Experts believe the activity may carry major repercussions
because the oceanic ridges account for some 70 percent
of the planet's
volcanic eruptions.
«
Because the effects
of volcanic eruptions and
of ENSO are very short - term and that
of solar variability very small, none
of these factors can be expected to exert a significant influence on the continuation
of global warming over the coming decades.
However, detecting acceleration is difficult
because of (i) interannual variability in GMSL largely driven by changes in terrestrial water storage (TWS)(7 ⇓ — 9), (ii) decadal variability in TWS (10), thermosteric sea level, and ice sheet mass loss (11) that might masquerade as a long - term acceleration over a 25 - y record, (iii) episodic variability driven by large
volcanic eruptions (12), and (iv) errors in the altimeter data, in particular, potential drifts in the instruments over time (13).
Regional differences in the observed SST changes after
volcanic eruptions are expected, partly
because of spatial differences in climate noise.