Sentences with phrase «forcing by the volcanic eruption»

ref: Climate forcing by the volcanic eruption of Mount Pinatubo Douglass D. H., R. S. Knox GEOPHYSICAL RESEARCH LETTERS 32, L05710 (2005)

Not exact matches

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.

The long timescales (even ignoring the «Earth system» responses like ice sheets and vegetation) are not easy to get at in the instrumental record or by studying «abrupt forcing» events like volcanic eruptions.

A hurricane is the most horrendous force of nature, often exceeding the havoc caused by volcanic eruptions and earthquakes, creating destruction over a far larger territory.

Previously on land, the Liberty was pushed underwater by the eruption's force, which also created huge trenches of volcanic rock on the seabed.

Thus this period is not ideal for assessing the magnitude of natural changes (both intrinsic and forced by natural processes like solar variability or volcanic eruptions) since there is likely a contamination from human - related causes.

I doubt you'll be able to show it was any more than the current level) then current forcings should be higher than RC's straight line (which is skewed downwards by the ~ 2015 volcanic eruption) for Scenario B implies.

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.

«Since 1997, when Pinatubo's aerosol settled out, the stratosphere has been exceptionally clear... Half or more of the warming since 1995 may due to the lack of large volcanic eruptions... That's about 0.13 °C... The remaining climate change is presumably caused by other forces, such as solar variability, El Nino, Atlantic AMO warming in 1995, lower Albedo and maybe even a little greenhouse gas.»

I always believed that the oceans were an important element in localised weather conditions over the short term but feel that relatively sudden shifts in climate occur through external forcings such as volcanic eruptions, meteor strike and the effects of changes in cosmic rays and sun spot activity, which are, unfortunately, all chaotic by nature and unpredictable.

I noted that the climate models reviewed by the UN's Intergovernmental Panel on Climate Change (IPCC) showed that temperature trends in the last century could not be explained on the basis of natural forces (such as volcanic eruptions) alone.

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.

They think that the only way for global - average temperatures to change is for the climate system to be forced «externally»... by a change in the output of the sun, or by a large volcanic eruption.

It is difficult to digitise the Figure 8.18 values for years affected by volcanic eruptions, so I have also adjusted the widely - used RCP4.5 forcings dataset to reflect the Section 7.5.3 observational estimate of current aerosol forcing, using Figure 8.18 and Table 8.7 data to update the projected RCP4.5 forcings for 2007 — 2011 where appropriate.

Forster et al. (2007) described four mechanisms by which volcanic forcing influences climate: RF due to aerosol — radiation interaction; differential (vertical or horizontal) heating, producing gradients and changes in circulation; interactions with other modes of circulation, such as El Niño - Southern Oscillation (ENSO); and ozone depletion with its effects on stratospheric heating, which depends on anthropogenic chlorine (stratospheric ozone would increase with a volcanic eruption under low - chlorine conditions).

Then I constructed an XY plot of temperature vs. forcings by year (with volcanic eruptions removed), fitted a line and got a strong linear relationship (R = 0.98) with a gradient of 0.32 C per watt / sq m and no sign of any change with time.

At first sight this statement seems valid, however the variability in global T is not only determined by anthropogenic forcings but is also determined by natural variability like ENSO, Volcanic eruptions, solar variation etc..