Sentences with phrase «change in solar radiation»

As such, they may provide a powerful demonstration of the impacts of changes in solar radiation on the climate system.

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.

I don't see any reason why this shouldn't be included in current models (including a long - term factor for changes in solar radiation since the Maunder Minimum).

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.

One Pt Barrow is not of course representative of GMT, but 3,000 Met stations which like Barrow produce a Global Mean temperature that has shown little or no warming since 1958, and none at all that is correlated with ever rising atmospheric concentrations of GHG tells us something, especially when annual temperature changes at those 3000 locations prove to be strongly correlated with annual changes in solar radiation at THOSE locations.

These feature the same forecast run multiple times over but with slightly different initial data input, such as a half - degree difference in ocean temperature or a slight change in the solar radiation, according to Rogers.

Earlier studies on the sensitivity of tropical cyclones to past climates have only analyzed the effect of changes in the solar radiation from orbital forcing on the formation of tropical cyclones, without considering the feedbacks associated to the consequent greening of the Sahara.

Valentina Zharkova, a professor of mathematics at Northumbria University in the United Kingdom, used a new model of the sun's solar cycle and its periodic change in solar radiation emissions to predict a «mini Ice Age» may begin shortly.

In some areas, such as Eastern Europe, recent observations of a reversal in the sign of this effect link changes in solar radiation to concurrent air quality improvements.

Changes in solar radiation definitely work quickly.

The anti global warming people (read coal and oil state people) point to evidence that greenland once had a 100 year warming cycle, that we are at the end of a long warming period (true), that «sun activity could do this» * (despite the fact that 50 years of monitoring show little change in solar radiation), and better «They had snow in Mississippi a couple of years ago».

If greater changes in solar radiation occur — as seems probable based on what is known of climate and solar activity in the past — the Sun needs to be considered in long - term climate projections.

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.

Speculation regarding past or future changes in solar radiation is based on what we can infer, indirectly, from past observations of solar activity — particularly bright faculae — since direct measurements of radiation exist for only the last fifteen years.

How the Earth's surface temperature adjusts to a given change in solar radiation depends on the processes by which the climate system responds to variations in the energy it receives.

The annual change in solar radiation produces large seasonal temperature fluctuations in the Northern Hemisphere where most of the world's land is now found.

They have presumed that the forcing from Milankovitch cycles (changes in solar radiation absorbed by the Earth's surface due to orbital variations) are the cause of deep ocean changes over time, but that these changes occur only as slowly as orbital variations occur — on millennial scales («several thousand years «-RRB-, not in decades to centuries.

This is the portion of temperature change that is imposed on the ocean - atmosphere - land system from the outside and it includes contributions from anthropogenic increases in greenhouse gasses, aerosols, and land - use change as well as changes in solar radiation and volcanic aerosols.

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.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

Will Gray is of course disputing the «changes in solar radiation» theory of recent warming just as much as he is disputing the CO2 explanation.

The analysis of the past 1 kyr focuses mainly on the climate response to natural forcings (changes in solar radiation and volcanism) and on the role of anthropogenic forcing during the most recent part of the record.

Wouldn't Occam's razor suggest that changes in solar radiation might be the best explanation for a common trend on all three planets?

Changes in solar radiation, known as solar forcing, have had only a very small effect on climate change, a member of the UN's top panel of climate scientists said today.

Any increase in temperature is likely due to changes in solar radiation.

Climate model simulations indicate that changes in solar radiation a few times larger than those confirmed in the eleven - year cycle, and persisting over multi-decadal time scales, would directly affect the surface temperature.

It seems likely that changes in solar radiation, linked to long - term variations in solar activity, may have been the dominant climate driver in the period between about AD 1600 and 1850.

«Volcanoes and changes in solar radiation can also drive cooler decades against the backdrop of ongoing warming.»

For example, a climate model may be used to understand the impact of a change in solar radiation on the Earth's climate system.

The great thing is that, since we can make good estimates of the changes in solar radiation, changes in the Earth's albedo due to melting ice, and changes in atmospheric CO2 concentration during the ice ages, scientists can directly calculate the sensitivity of the climate to changes in the atmospheric CO2 concentration.

The only direct real - world inputs to these models, in a climate change simulation context, are changes in atmospheric chemistry and composition (such as increasing greenhouse gases, or changing volcanic aerosols) and changes in solar radiation.

Some external influences, such as changes in solar radiation and volcanism, occur naturally and contribute to the total natural variability of the climate system.