Sentences with phrase «significant human carbon»
After that, the planet warmed without significant human carbon emissions to blame, so what caused it?
http://www.paulmacrae.com/ Not exact matches
A study provides the first evidence that pollen production is significantly stimulated by elevated carbon dioxide in a grass species as a result of climate change, which may have significant impact on human health.
While the team's research showed no significant difference in bacterial degradation of organic matter from cleared or forested watersheds, Canuel says it did show that «organic carbon in runoff from watersheds affected by human activity is less susceptible to solar degradation than that from forested watersheds.»
«Our results expose a specific regional hot spot where climate change, in the absence of significant [carbon cuts], is likely to severely impact human habitability in the future,» said Jeremy Pal and Elfatih Eltahir of the Massachusetts Institute of Technology, writing in the journal Nature Climate Change.
«The inescapable conclusion is that human contribution is not significant and that observed increases in carbon dioxide and other greenhouse gases make only a negligible contribution to climate warming,» Douglas wrote.
The Intergovernmental Panel on Climate Change (the world authority on climate change) has established two simple facts: carbon dioxide traps energy, humans create significant increases on carbon dioxide in the atmosphere.
He quotes leading author David Douglass saying; «The inescapable conclusion is that the human contribution is not significant and that observed increases in carbon dioxide and other greenhouse gases make only a negligible contribution to climate warming.»
The EPA's 2009 Endangerment Finding has identified carbon dioxide as a dangerous pollutant carrying significant risks to human health and the environment.
The basic calculations focus primarily on a few types of human interactions with forests which are believed to result in the most significant fluxes of carbon.
Hypothesis 2a: Although the natural causes of climate variations and changes are undoubtedly important, the human influ - ences are significant and involve a diverse range of first - order climate forcings, includ - ing, but not limited to, the human input of carbon dioxide (CO2).
As a result of past and current human greenhouse gas emissions, we have already locked in a substantial and significant rate of Arctic carbon emission feedback.
However, I think the evidence favours a significant climate impact due to human carbon emissions and therefore some response is required.
«In a clear, understandable manner that a high school graduate with a few general science courses could understand, Climate Change Reconsidered effectively rebuts the UN Intergovernmental Panel on Climate Change report that carbon dioxide due to human activity causes significant global warming.
The nature of the carbon dioxide problem is such that significant effects on many aspects of the natural environment and human endeavors are possible within the next few decades.
Finally, we are now realizing that black carbon is a significant issue which affects human health as well as the climate.
NIPCC scientists concluded the IPCC was biased with respect to making future projections of climate change, discerning a significant human - induced influence on current and past climatic trends, and evaluating the impacts of potential carbon dioxide - induced environmental changes on Earth's biosphere.
The clearing of rainforests and carbon - rich peatlands for new plantations is releasing globally significant carbon pollution, making Conflict Palm Oil a major driver of human induced climate change.
Satellites show no warming in the troposphere «Satellite measurements indicate an absence of significant global warming since 1979, the very period that human carbon dioxide emissions have been increasing rapidly.
The latter is a politico -(pseudo) scientific construct, developed since the late - 1980s, in which the human emission of «greenhouse gases», such as carbon dioxide and methane, is unquestioningly taken as the prime - driver of a new and dramatic type of climate change that will inexorably result in a significant warming during the next 100 years and which will inevitably lead to catastrophe for both humanity and the Earth.
They agree carbon dioxide is a greenhouse gas, that the world is warming, and that a significant fraction of this is down to humans.
As methane emissions from permafrost degradation will also be accompanied by larger fluxes of CO2, Arctic carbon stores clearly have the potential to be a significant amplifier to the human release of carbon.
Second of all, humans can't easily have nearly as significant effect on water vapor in the atmosphere as carbon dioxide by direct emissions of these gases.
Most importantly, the observations have confirmed that human activities, in particular a 40 % increase in atmospheric carbon dioxide concentrations since the late 19th century, have had a discernible and significant impact on the climate system already.