But the presence of factors other than the
lack of volcanic aerosols is directly analogous to the condition of the external environment in the air conditioned room.
• The
presence of volcanic aerosols (ash, dust, and sulfur - based aerosols) in the air increases the amount of solar radiation that is reflected back into space.
Here, the authors use satellite and aircraft data to investigate the radiative impact
of volcanic aerosols in the lowermost stratosphere since the year 2000.
Basic physical science considerations, exploratory climate modeling, and the
impacts of volcanic aerosols on climate all suggest that SWCE could partially compensate for some effects — particularly net global warming — of increased atmospheric CO2.
Oman, L., A. Robock, G. Stenchikov, T. Thordarson, D. Koch, D. Shindell, and C. Gao, 2006: Modeling the distribution
of the volcanic aerosol cloud from the 1783 Laki Eruption.
Besides knowing a lot more about the
transport of volcanic aerosols in the atmosphere, modern researchers had communications lines and satellites so that news of an eruption could be relayed quickly and the effects noted as they unfolded.
Researchers at NASA's Goddard Space Flight Center in Greenbelt, Maryland, are using already available satellite measurements of sulfur dioxide (SO2), a main components of volcanic emissions, along with the more recent ability to map the location and vertical
profiles of volcanic aerosols.
Without mixing taking place, the water that flowed back to the Arctic was colder, helping sustain large areas of sea ice and creating a self - sustaining feedback loop long after the effects
of the volcanic aerosols subsided....
«We found that red - to - green ratios measured in the sunsets of paintings by great masters correlate well with the
amount of volcanic aerosols in the atmosphere, regardless of the painters and of the school of painting,» Zerefos said.
«The forcings for ECHO - G are selected in advance by (1) choosing the strength and time series of solar irradiance variability; (2) choosing the strength and time
series of volcanic aerosol variability and converting this to a surrogate time series of solar irradiance reductions, which are then added to (1); and (3) choosing the time series of greenhouse gas concentrations.
Supercomputer simulations by University of Washington researchers outline the potential risks and benefits of geoengineering, specifically the
release of volcanic aerosols into the atmosphere.
25 21.3 Climate Changes Natural Processes That Change Climates Volcanic Eruptions • The
presence of volcanic aerosols (ash, dust, and sulfur - based aerosols) in the air increases the amount of solar radiation that is reflected back into space.
Victor, if an absence
of volcanic aerosols results from their «dissipation» and this in turn results in a «rebound» as you say it does, is not such a «rebound» a «real effect» resulting from an «absence» (or more usually a partial absence) of volcanic aerosols?
If a lack of air conditioning can not warm a room, then I fail to see how a lack
of volcanic aerosols can warm the Earth.
The effects
of volcanic aerosols were estimated from data compiled by the NASA Goddard Institute for Space Studies (GISS), and solar irradiance was based primarily on sunspot data.