Sentences with phrase «by volcanic emissions»

Not exact matches

Now, new research by scientists at Washington University in St. Louis sheds light on what happens underground when CO2 is injected into basalt, illustrating precisely how effective the volcanic rock could be as an abatement agent for CO2 emissions.

Professor Sybren said: «It can be excluded, however, that this hiatus period was solely caused by changes in atmospheric forcing, either due to volcanic eruptions, more aerosols emissions in Asia, or reduced greenhouse gas emissions.

Professor Drijfhout added: «When a similar cooling or reduced heating is caused by volcanic eruptions or decreasing greenhouse emissions the heat flow is reversed, from the ocean into the atmosphere.

Titled «Initiation of Snowball Earth with volcanic sulfur aerosol emissions,» the study posits a hypothesis by two researchers from Harvard University's John A. Paulson School of Engineering and Applied Sciences (SEAS).

Note that emissions from the large volcanic outbursts on Aug. 15 at Rarog and Heno Paterae have substantially faded by Aug. 29.

The monitoring of Io's volcanic activity will continue to build a timeline of volcanic activity and thermal emission variability, which will be further complemented by data obtained by other missions to the Jupiter system (such as the ESA mission JUICE, or a future dedicated Europa or Io mission).

Could some be introduced by meteorite / astroid impacts, volcanic activity, or different emission of radon gas from Earth's interior?

It is informative to calculate volcanic analogs that elucidate the size of humanity's carbon footprint by scaling up volcanism to the hypothetical intensity required to generate CO2 emissions at anthropogenic levels.

The other point about volcanic emissions: the majority of the activity is in the oceanic spreading zones, which release carbon into the water, but because it is absorbed by the water, the gas isn't released for some time, sometimes up to 1000 years.

The models currently assume a generally static global energy budget with relatively little internal system variability so that measurable changes in the various input and output components can only occur from external forcing agents such as changes in the CO2 content of the air caused by human emissions or perhaps temporary after effects from volcanic eruptions, meteorite strikes or significant changes in solar power output.

Deng et al., 2017 [DOI: 10.1002 / 2016JC012458] «The [Medieval Climate Anomaly] and [Little Ice Age] are climate anomalies that were caused by natural forcing (e.g., solar variability and volcanic emissions), but the [Current Warm Period] is linked to anthropogenic factors (e.g., industrialization and land - use changes)»

This means that volcanic emissions of CO2 have been outweighed by the loss of carbon to calcium carbonate sediments on a multi-million year basis.

CO2 in the atmosphere is influenced by temperature, acidity of the oceans, ocean water turn - over, human emissions, plant growth, volcanic activity.....

Long - term Cenozoic temperature trends, the warming up to about 50 Myr before present (BP) and subsequent long - term cooling, are likely to be, at least in large part, a result of the changing natural source of atmospheric CO2, which is volcanic emissions that occur mainly at continental margins due to plate tectonics (popularly «continental drift»); tectonic activity also affects the weathering sink for CO2 by exposing fresh rock.

-- 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.

The rise in atmospheric CO2 concentration is induced by a variation in the unquantified undersea volcanic sulphur emission which causes a known effect on the carbon cycle.

The decadal predictions system, Met Office decadal prediction system: DePreSys, achieves this by starting predictions from observed atmospheric and oceanic conditions, and including projected emissions of greenhouse gases and variations in natural climate forcings (volcanic and solar activity).

As they stand at present the models assume a generally static global energy budget with relatively little internal system variability so that measurable changes in the various input and output components can only occur from external forcing agents such as changes in the CO2 content of the air caused by human emissions or perhaps temporary after effects from volcanic eruptions, meteorite strikes or significant changes in solar power output.

However, the conditions predicted for the open ocean may not reflect the future conditions in the coastal zone, where many of these organisms live (Hendriks et al. 2010a, b; Hofmann et al. 2011; Kelly and Hofmann 2012), and results derived from changes in pH in coastal ecosystems often include processes other than OA, such as emissions from volcanic vents, eutrophication, upwelling and long - term changes in the geological cycle of CO2, which commonly involve simultaneous changes in other key factors affecting the performance of calcifiers, thereby confounding the response expected from OA by anthropogenic CO2 alone.

You aren't thinking about the warming period early last century, because we know it was a relatively brief period, and so lacked huge significance, and was caused by a combination of CO2 emissions, high solar activity and low volcanic activity and the later two factors haven't been apparent since the 1970's modern warming period.

Yeah, you can devise a theoretical scenario of emissions reductions that might — might — stabilize the Arctic, but such a scenario is all but impossible in the face of implacable opposition by the deniers and their political allies, and it is precisely the kind of emissions reduction scenario Revkin himself constantly dismisses.The Arctic is all but certain to be virtually ice free within two decades (barring extreme volcanic activity).

Radiative forcing is a way to quantify an energy imbalance imposed on the climate system either externally (e.g., solar energy output or volcanic emissions) or by human activities (e.g., deliberate land modification or emissions of greenhouse gases, aerosols, and their precursors).

Such is the complexity of rainfall patterns that changes can be caused both by human factors, such as greenhouse gas emissions and atmospheric pollutants, and natural factors, such as changes in the sun's activity and explosive volcanic eruptions.