Sentences with phrase «natural changes in solar radiation»

These include other anthropogenic factors such as increased industrial aerosols and ozone depletion, as well as natural changes in solar radiation and volcanic aerosols, and the cycle of El Niño and La Niña events.

In particular, the authors find fault with IPCC's conclusions relating to human activities being the primary cause of recent global warming, claiming, contrary to significant evidence that they tend to ignore, that the comparatively small influences of natural changes in solar radiation are dominating the influences of the much larger effects of changes in the atmospheric greenhouse gas concentrations on the global energy balance.

Not exact matches

In recent years, a brand of research called «climate attribution science» has sprouted from this question, examining the impact of extreme events to determine how much — often in fractional terms — is related to human - induced climate change, and how much to natural variability (whether in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factorsIn recent years, a brand of research called «climate attribution science» has sprouted from this question, examining the impact of extreme events to determine how much — often in fractional terms — is related to human - induced climate change, and how much to natural variability (whether in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factorsin fractional terms — is related to human - induced climate change, and how much to natural variability (whether in climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factorsin climate patterns such as the El Niño / La Niña - Southern Oscillation, sea - surface temperatures, changes in incoming solar radiation, or a host of other possible factorsin incoming solar radiation, or a host of other possible factors).

Natural factors contributing to past climate change are well documented and include changes in atmospheric chemistry, ocean circulation patterns, solar radiation intensity, snow and ice cover, Earth's orbital cycle around the sun, continental position, and volcanic eruptions.

That may mean that natural factors, such as changes in solar radiation, played a larger role in atmospheric carbon dioxide than reforestation during this time, Pongratz said.

In the first instance, the frequency of extreme summers was calculated in climate models where both human - caused (changes in greenhouse gases, aerosols and ozone) and natural (solar radiation changes and volcanic) climate factors were includeIn the first instance, the frequency of extreme summers was calculated in climate models where both human - caused (changes in greenhouse gases, aerosols and ozone) and natural (solar radiation changes and volcanic) climate factors were includein climate models where both human - caused (changes in greenhouse gases, aerosols and ozone) and natural (solar radiation changes and volcanic) climate factors were includein greenhouse gases, aerosols and ozone) and natural (solar radiation changes and volcanic) climate factors were included.

Natural variability might modulate the flow of energy between parts of the system, such as from ocean to atmosphere, but the «pace of climate warming», as in the general gain in energy (or loss of energy) of the entire climate system, can only be dictated by some external forcing, such as somthing that changes the amount of solar radiation reaching the surface, volcanoes, or changes in GH gas concentrations.

The model included a more comprehensive set of natural and human - made climate forcings than previous studies, including changes in solar radiation, volcanic particles, human - made greenhouse gases, fine particles such as soot, the effect of the particles on clouds and land use.

16 Natural Climate Changes Volcanic Activity Volcanic dust can remain suspended in the atmosphere for several years, reflecting incoming solar radiation and lower global temperatures.

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.

Warming is greater in the northern hemisphere, over land, and at night, greater in the troposphere and cooler in the stratosphere, all indications of greenhouse warming rather than warming from solar radiation changes or other «natural» causes.

Regional climatic changes played a role as well, which was particularly relevant in Amazon rainforests, which accounted for 42 % of the global NPP increase, owing mainly to decreased cloud cover and the resulting increase in solar radiation (note that it is basically impossible to determine how much of this increase in NPP is a result of recent global climate change vs. natural climate variability, although both are likely to have played a role).