Sentences with phrase «change in greenhouse gases»

On almost all time scales, natural changes in greenhouse gas concentrations appear to affect climate.

The effect of these small orbital changes was amplified by positive feedbacks, such as changes in greenhouse gas levels.

The 1998 - 2008 hiatus is not the first period in the instrumental temperature record when the effects of anthropogenic changes in greenhouse gases and sulfur emissions on radiative forcing largely cancel.

Current warming is only really related to changes in greenhouse gases though.

It tracks changes in greenhouse gas output for a number of sectors between 2005 and 2020.

Almost all the SOD's 10.2 % error standard deviation for greenhouse gas AF relates to the AF magnitude that a given change in the greenhouse gas concentration produces, not to uncertainty as to the change in concentration.

''... Professor Patrick Michaels (in Congressional testimony of November 2010) claimed that human - caused changes in greenhouse gases explain less than half of the post-1950 warming.

MAGICC is a model developed by the U.S. National Center for Atmospheric Research, with funding from EPA, to determine the impact of changes in greenhouse gas concentrations on global - mean surface air temperatures.

(1) we did not include changes in greenhouse gases other than CO2; (2) maybe we should have melted more sea ice and see what happens; (3) these atmospheric and precipitation estimates do not include changes in land use, in the US and elsewhere.

D, this lesson should be followed by lessons that allow students to explore the connection between changes in greenhouse gas levels and a rise in Earth's mean surface temperature.

To reach their conclusions, the researchers analyzed nearly 30 years of observational temperature and precipitation data and also used computer model simulations that considered soil, atmospheric, and oceanic conditions and projected changes in greenhouse gases.

So, the scientists are actively trying to understand how ocean biology might respond to changes in water circulation, nutrient supply, temperature and other factors, all of which could influence the reactive gas emissions and, in turn, feed into the chemical cycles that further influence climate through changes in greenhouse gases.

The Cenozoic record provided by paleo - temperature and paleo - carbon dioxide proxies can constrain these parameters and thus also the projected response of the planet to human - induced changes in greenhouse gas concentrations.

Climate sensitivity and Earth system sensitivity relate changes in greenhouse gas concentrations and other radiative forcers to changes in temperature, both in Earth's past and in the future.

[It is helps us to understand what natural forces are currently at work that could be causing changes... But note that some natural forces like the ones that I talked about above work over much longer timescales than the century timescale over which we are making significant changes in greenhouse gas levels.

That change in the rate of energy flow through the Earth system serves to keep the Earth system energy content at equilibrium despite changes in solar input or changes in greenhouse gas quantities.

Those greenhouse gases that have been emitted over the last several decades, they're going to circulate in the atmosphere for a while even if there are dramatic global changes in greenhouse gas emissions.

In other words, the latest observations reported by the IPCC proves that the climate seems to be less sensitive to changes in the greenhouse gas increases than the previous IPCC report indicated.

GCMs take into account changes in greenhouse gases, albedo, ocean currents, winds and surface temperatures.

Temperature change influenced change in greenhouse gases, which in a so - call positive feedback mechanism then accelerated the temperature change.

«It has very serious implications for changes in greenhouse gases,» Romanovsky said, adding that the releases described should be monitored more closely.

In the study, researchers analyzed a series of transient Coupled General Circulation Model simulations forced by changes in greenhouse gases, orbital forcing, meltwater discharge and the ice - sheet history throughout the past 21,000 years.

«There are dozens of prominent global climate models and they all project different amounts of global warming for a given change in greenhouse gas concentrations, primarily because there is not a consensus on how to best model some key aspects of the climate system,» Brown explained.

... modalities, rules and guidelines as to how, and which, additional human - induced activities related to changes in greenhouse gas emissions by sources and removals by sinks in the agricultural soils and the land - use change and forestry... shall be added or subtracted.

Scientifically, we never had the expectation that there would be some monotonic warming signal in response to slow, human - caused changes in greenhouse gases, with each year inexorably warmer than the previous year.

Complexity science suggests that climate may change abruptly and unpredictably as a result of changes in greenhouse gases.

The obvious question, of course, is whether those changes in circulation are themselves simply «natural variability» or whether they are forced — that is, resulting from changes in greenhouse gases.

Small changes — including changes in greenhouse gases — can push the system past a threshold at which stage the system transitions to a new state at a rate determined by the internal dynamics of the system itself.

Insofar as it is not, and the relationship between changes in greenhouse gases is different in the future to in the past, then the two AF estimation fractional errors will differ.

However, although models simulate a decrease in DTR when they include anthropogenic changes in greenhouse gases and aerosols, the observed decrease is larger than the model - simulated decrease (Stone and Weaver, 2002, 2003; Braganza et al., 2004).

Among the implications of the study are that ocean temperatures in this area may be more sensitive to changes in greenhouse gas levels than previously thought and that scientists should be factoring entrainment into their models for predicting future climate change.

The study warns that, given no change in greenhouse gas emissions in the near future, around 99 percent of the glaciers around the world's tallest mountain will melt, drastically changing the surrounding environment.

They used climate models to test whether the observed changes in sea - level pressure could be explained away by the effects of volcanic eruptions, changes in the intensity of the sun and changes in greenhouse gases and other forms of air pollution.

His research aims to understand and model precipitation processes over a wide range of spatial and time scales, from the lifecycles of individual storm cells, to large intra-seasonal weather oscillations and monsoons including their responses to changes in greenhouse gas and aerosols.

These myriad unmodeled amplifying feedbacks support the analysis that the climate is much more sensitive to changes in greenhouse gas emissions and other «forcings» than the IPCC models have been saying.