Sentences with phrase «warming influence on climate»

In comparing human - caused and natural «radiative forcing,» (which is defined as «an index of the importance of [a] factor as a potential climate change mechanism»), the IPCC's February 2007 Working Group I Report «The Physical Science Basis» concluded that since 1750, «it is extremely likely [> 95 % probability] that humans have exerted a substantial warming influence on climate.

For instance, Bond et al. report that black carbon aerosol, or soot, is second only to carbon dioxide as the substance emitted by human activity that has the greatest warming influence on the climate — contributing a quarter (or perhaps even a bit more) to the current overall anthropogenic warming effect.

The combined anthropogenic RF is estimated to be +1.6 -LSB--- 1.0, +0.8][2] W m — 2, indicating that, since 1750, it is extremely likely [3] that humans have exerted a substantial warming influence on climate.

that humans have exerted a substantial warming influence on climate.

One - third of all Man's supposed warming influence on climate since 1750 has occurred since the late 1990s, yet satellites show scarce a flicker of global warming in close to 19 years.

Here's the second (and final) installment from Andrew A. Lacis of NASA's Goddard Institute for Space Studies providing more detail on his view of the evidence showing a human warming influence on the climate.

One is already playing out on blogs attacking those concerned about the building human warming influence on climate.

Not exact matches

But while the IPCC bungled its numbers, climate's influence on Himalayan glaciers is still a looming concern for many scientists and governments, which worry about how warming will affect the region's water cycle.

Climate's influence on Himalayan glaciers is still a looming concern for many scientists and governments, which worry about how warming will affect the region's water cycle

While natural sources of climate variability are significant, multiple lines of evidence indicate that human influences have had an increasingly dominant effect on the climate warming observed since the mid-twentieth century.

These fluctuations superimpose the general global warming trend since the beginning of industrialization and thus complicate the accurate determination of human influence on the climate.

In particular, the influence of warmer temperatures on moose nutritional condition and moose parasites, including a fatal brain worm parasite that is spread by white - tail deer, which have moved farther north into moose territory as the climate has gotten milder.

The influence of climate change on this warm water invasion is an ongoing research focus among climate scientists and is still not completely understood.

The panel reported that the world is warming throughout the lower atmosphere, as climate models had predicted, and acknowledged «clear evidence of human influences on the climate system.»

«This quantitative attribution of human and natural climate influences on the IPWP expansion increases our confidence in the understanding of the causes of past changes as well as for projections of future changes under further greenhouse warming,» commented Seung - Ki Min, a professor with POSTECH's School of Environmental Science and Engineering.

It is very much the mainstream view in the climate research community that you can not explain the warming of the past few decades without anthropogenic and human influences on climate.

On Wednesday, Dec. 17, at the American Geophysical Union's Fall Meeting in San Francisco, Noah Diffenbaugh, an associate professor of environmental Earth system science at the Stanford School of Earth Sciences, will discuss approaches to this challenge in a talk titled «Quantifying the Influence of Observed Global Warming on the Probability of Unprecedented Extreme Climate Events.&raquOn Wednesday, Dec. 17, at the American Geophysical Union's Fall Meeting in San Francisco, Noah Diffenbaugh, an associate professor of environmental Earth system science at the Stanford School of Earth Sciences, will discuss approaches to this challenge in a talk titled «Quantifying the Influence of Observed Global Warming on the Probability of Unprecedented Extreme Climate Events.&raquon the Probability of Unprecedented Extreme Climate Events.»

The study marks the first time that human influence on the climate has been demonstrated in the water cycle, and outside the bounds of typical physical responses such as warming deep ocean and sea surface temperatures or diminishing sea ice and snow cover extent.

But decision makers need to appreciate the influence of global warming on extreme climate and weather events.

«As the climate becomes increasingly more variable, we need to provide water resource managers with specific guidance on how individual warm or wet years, which may not coincide, will influence water supply,» said Brooks.

Long - term (decadal and multi-decadal) variation in total annual streamflow is largely influenced by quasi-cyclic changes in sea - surface temperatures and resulting climate conditions; the influence of climate warming on these patterns is uncertain.

Jiacan has worked on several projects on climate dynamics, including the response of large - scale circulations in the warming climate, its effects on regional weather patterns and extreme events, tropical influence on mid-latitude weather, and dynamical mechanisms of sub-seasonal variability of mid-latitude jet streams.

The ecosystems chapter concludes that, «Human - induced climate change, in conjunction with other stresses, is exerting major influences on natural environments and biodiversity, and these influences are generally expected to grow with increased warming.»

The potential influence of rapid Arctic warming on such extremes has been a hot research topic in recent years, though it is much debated in the climate community.

There is no evidence whatsoever that «politics» in any way, shape or form has influenced actual climate science, or its overwhelming conclusions regarding both the reality of anthropogenic global warming and the danger that it poses to humanity and to life on earth in general.

At the same time, increasing depth and duration of drought, along with warmer temperatures enabling the spread of pine beetles has increased the flammability of this forest region — http://www.nature.com/nclimate/journal/v1/n9/full/nclimate1293.html http://www.vancouversun.com/fires+through+tinder+pine+beetle+killed+forests/10047293/story.html Can climate models give different TCR and ECS with different timing / extent of when or how much boreal forest burns, and how the soot generated alters the date of an ice free Arctic Ocean or the rate of Greenland ice melt and its influence on long term dynamics of the AMOC transport of heat?

«Although seas have risen and warmed, and the atmosphere now holds more moisture, we can't yet draw definitive conclusions about the influence of climate change on Hurricane Harvey.

Unfortunately for policymakers and the public, while the basic science pointing to a rising human influence on climate is clear, many of the most important questions will remain surrounded by deep complexity and uncertainty for a long time to come: the pace at which seas will rise, the extent of warming from a certain buildup of greenhouse gases (climate sensitivity), the impact on hurricanes, the particular effects in particular places (what global warming means for Addis Ababa or Atlanta).

Do you really think the fact that waters are warmer and atmospheric moisture content is higher now due to man - made global warming (not to mention the «blocking high» over Greenland due to Arctic climate change) may be less of an influence on Hurricane Sandy than some other currently unobserved changes to our climate that occurred 3000 years ago?

This is similar to how the denier claims of no global warming, or of no anthropogenic influence upon warming, or of low climate sensitivity, depend on all observational data being wrong in the same direction.

Global Warming vs Climate Change,» an interesting new study of Americans» perceptions of the two dominant shorthand phrases used to describe the building human influence on the climate Climate Change,» an interesting new study of Americans» perceptions of the two dominant shorthand phrases used to describe the building human influence on the climate climate system.

I've been criticized by some environmentalists in recent years for writing that the long - term picture (more CO2 = warmer world = less ice = higher seas and lots of climatic and ecological changes) is the only aspect of human - caused global warming that is solidly established, and that efforts to link dramatic weather - related events to the human influence on climate could backfire should nature wiggle the other way for awhile.

Now a new study by V. Ramanathan of the University of California, San Diego, published online this week in Nature Geoscience, finds that soot may be more than twice as potent a warming influence as the Intergovernmental Panel on Climate Change estimated last year.

Weart is best known to Dot Earth regulars as the author of the essential guide to 100 years of research pointing to a human influence on climate, «The Discovery of Global Warming» (here's my 2003 review of that book for The Times).

The journal Science has published a letter signed by 255 members of the National Academy of Sciences, including 11 Nobel laureates, that pushes back sharply after months of assaults on evidence pointing to a growing and disruptive human influence on the climate and some of the researchers who've done important work on global warming.

Hundreds of private e-mails and documents hacked from a computer server at a British university are causing a stir among global warming skeptics, who say they show that climate scientists conspired to overstate the case for a human influence on climate change.

[Response: While I wouldn't quite characterize this in terms of a «permanent El Nino», a reasonably up - to - date discussion of possible climate change influences on ENSO is provided in our previous article El Nino and Global Warming — mike]

While Pam and Haiyan, as well as other recent tropical cyclone disasters, can not be uniquely pinned on global warming, they have no doubt been influenced by natural and anthropogenic climate change and they do remind us of our continuing vulnerability to such storms.

THEN STEFAN SAYS EXACTLY WHAT THE PRESIDENT WAS INFERRING IN HIS PRESS CONFERENCE; and what has been repeatedly said already in the IPCC Reports: «While Pam and Haiyan, as well as other recent tropical cyclone disasters, can not be uniquely pinned on global warming, they have no doubt been influenced by natural and anthropogenic climate change and they do remind us of our continuing vulnerability to such storms.»

The EPA continues: «Nevertheless, the Intergovernmental Panel on Climate Change (IPCC) stated there was a «discernible» human influence on climate; and that the observed warming trend is «unlikely to be entirely natural in origin.Climate Change (IPCC) stated there was a «discernible» human influence on climate; and that the observed warming trend is «unlikely to be entirely natural in origin.climate; and that the observed warming trend is «unlikely to be entirely natural in origin.»

For a long time there's been a strong perception among those of us tracking research on human - caused global warming that meteorologists are more apt to doubt that humans could dangerously disrupt climate than the much smaller community of climatologists studying the overall climate system and what influences its patterns.

The take - home message, directly in sync with the core findings of the last two assessments from the Intergovernmental Panel on Climate Change, can be distilled to a fairly straightforward statement: Rising concentrations of carbon dioxide will result in long - lasting warming that will progressively produce more harmful impacts on conditions and systems that influence human wellbeing.

So: The study finds a fingerprint of anthropogenic influences on large scale increase in precipitation extremes, with remaining uncertainties — namely that there is still a possibility that the widespread increase in heavy precipitation could be due to an unusual event of natural variability.The intensification of extreme rainfall is expected with warming, and there is a clear physical mechanism for it, but it is never possible to completely separate a signal of external forcing from climate variability — the separation will always be statistical in nature.

It's important to note that a substantial short - term influence on the globe's average temperature, the cycle of El Niño warmth and La Niña cooling in the tropical Pacific Ocean, was in the warm phase until May but a La Niña cooling is forecast later this year, according to the Climate Prediction Center of the National Oceanic and Atmospheric Administration.

And there are plenty of important questions to resolve about the climate of the Holocene — this comfy warm interval humans have enjoyed since the end of the last ice age — before the human influence on the system built in recent decades.

Natural climate variability — including the periodic swings between El Nià ± o and La Nià ± a conditions in the Pacific — will sometimes overshadow global warming's influence on hurricanes, Trenberth said.

The science pointing to a rising human influence on the climate system is simply delineating the boundaries of the problem — and they are still very fuzzy boundaries on many important points (the extent of warming and pace of sea level rise, just for starters).

The Intergovernmental Panel on Climate Change (big pdf file) and other climate - research groups have largely rejected the hypothesis that variations in the sun's behavior could have played a big role in warming since 1950 (the period in which the panel and the vast majority of climate specialists see abundant evidence that a human - caused buildup of greenhouse gases is the main inflClimate Change (big pdf file) and other climate - research groups have largely rejected the hypothesis that variations in the sun's behavior could have played a big role in warming since 1950 (the period in which the panel and the vast majority of climate specialists see abundant evidence that a human - caused buildup of greenhouse gases is the main inflclimate - research groups have largely rejected the hypothesis that variations in the sun's behavior could have played a big role in warming since 1950 (the period in which the panel and the vast majority of climate specialists see abundant evidence that a human - caused buildup of greenhouse gases is the main inflclimate specialists see abundant evidence that a human - caused buildup of greenhouse gases is the main influence).

James E. Hansen, the head of Goddard and an outspoken campaigner for prompt cuts in greenhouse - gas emissions, explained that the decades - long global warming trend and patterns of warming remain consistent with a growing influence on climate from the planet's building blanket of heat - trapping greenhouse gases.

In environmental circles there is a clear and correct recognition of the fact that the planet is warming at an astounding pace, yet, there is a perplexing denial of the ongoing climate engineering insanity (which is mathematically the greatest single negative influence on the climate system overall).