Sentences with phrase «significant global warming over»

Not exact matches

Since 1950, the volcanic forcing has been negative due to a few significant eruptions, and has offset the modestly positive solar forcing, such that the net natural external forcing contribution to global warming over the past 50 years is approximately zero (more specifically, the authors estimate the natural forcing contribution since 1950 at -10 to +13 %, with a most likely value of 1 %).

The Sun has both direct and indirect influences over the Earth's temperature, and we can evaluate whether these effects could be responsible for a significant amount of the recent global warming.

According to the U.S. Environmental Protection Agency, the greenhouse gas methane is highly efficient at trapping heat in the atmosphere and a significant contributor to global warming, over 80 times more potent than carbon dioxide.

Thus it appears that, provided further satellite cloud data confirms the cosmic ray flux low cloud seeding hypothesis, and no other factors were involved over the past 150 years (e.g., variability of other cloud layers) then there is a potential for solar activity induced changes in cloudiness and irradiance to account for a significant part of the global warming experienced during the 20th century, with the possible exception of the last two decades.

On the contrary, roughly 80 percent of HOT is devoted to on - the - ground reporting that focuses on solutions — not just the relatively well known options for reducing greenhouse gas emissions and otherwise limiting global warming, but especially the related but much less recognized imperative of preparing our societies for the many significant climate impacts (e.g., stronger storms, deeper droughts, harsher heat waves, etc.,) that, alas, are now unavoidable over the years ahead.

Over 400 prominent scientists from more than two dozen countries recently voiced significant objections to major aspects of the so - called «consensus» on man - made global warming.

The paper was accompanied by a press release entitled «Global Warming not a Man - made Phenomenon», in which Shaviv was quoted as stating, «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man&rGlobal Warming not a Man - made Phenomenon», in which Shaviv was quoted as stating, «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man&Warming not a Man - made Phenomenon», in which Shaviv was quoted as stating, «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man&rglobal temperature, since only about a third of the warming over the past century should be attributed to man&warming over the past century should be attributed to man».

He said U.S. intelligence agencies accepted the consensual scientific view of global warming, including the conclusion that it is too late to avert significant disruption over the next two decades.

The earth has had significant Global Warming for some 20,000 years now... The only real argument is to the degree that mans activity has augmented that... We just came out of one - point - five - million years of continuous glaciation with sheets of two mile thick ice down past the 44th parallel... I will cheerfully deal with warming issues over that, anyWarming for some 20,000 years now... The only real argument is to the degree that mans activity has augmented that... We just came out of one - point - five - million years of continuous glaciation with sheets of two mile thick ice down past the 44th parallel... I will cheerfully deal with warming issues over that, anywarming issues over that, any day...

The relationship is not perfect but it represents a significant improvement over the incredibly lame human - CO2 and global warming / climate change relationship claimed by the IPCC's anti-CO2 Climategate scientists and alarmists.

Again, no significant trend of the global averaged Gaa [atmospheric greenhouse effect] is found from 2003 to 2014 (Fig. 2) because the enhanced warming effect over the western tropical Pacific is largely counteracted by the weakened warming influence on the central tropical Pacific.

Interestingly, the paper «Climate Trends and Global food production since 1980» (Lobell, Schlenker, Costa - Roberts, in Sciencexpress, 5 May, Science 1204531) confirms my finding of the absence of climate change in the USA: «A notable exception to the [global] warming pattern is the United States, which produces c. 40 % of global maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of significant climate trends&rGlobal food production since 1980» (Lobell, Schlenker, Costa - Roberts, in Sciencexpress, 5 May, Science 1204531) confirms my finding of the absence of climate change in the USA: «A notable exception to the [global] warming pattern is the United States, which produces c. 40 % of global maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of significant climate trends&rglobal] warming pattern is the United States, which produces c. 40 % of global maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of significant climate trends&rglobal maize and soybean and experienced a slight cooling over the period... the country with largest overall share of crop production (United States) showed no [adverse] effect due to the lack of significant climate trends».

A failure to appreciate the role clouds play in regulating the Earth's temperature means that a significant number of climate change predictions underestimate the likely extent of global warming over the coming years, scientists have claimed.

First, Happer mentions statistical significance, but global surface temperature trends are rarely if ever statistically significant (at a 95 % confidence level) over periods as short as a decade, even in the presence of an underlying long - term warming trend, because of the natural variability and noise in the climate system.

PRINCETON, NJ — The slight upward trend in Americans» concern about global warming over the past decade masks a more significant trend: the growing gap between Republicans and Democrats over global warming.

«It claimed that «simply proceeding to the discovery phase of a global warming case» — during which the oil corporations would be required to turn over internal documents — «would be significant» for activists...

If current trends in global warming continue unmitigated, some of the world's most well - known and historically significant cultural landmarks — including the Statue of Liberty in New York City, the Tower of London in the United Kingdom, and the archaeological sites of Pompeii in Italy — could be destroyed by rising global sea levels over the next 2,000 years, according to new research.

Resolved There is significant (or discernible) evidence of anthropogenic global warming, distinct from land use effects and natural variability, over the past

It would have to be shown that the recent temperature record can be statistically significantly distinguished from the statistically significant warming signal, which can be detected when performing an analysis that uses data over multiple decades, from the mid-1970ies to present, or from the mid-1970ies up to the time, when the alleged change in the behavior of the global atmospheric temperature is supposed to have occurred.

P1: There is significant (or discernible) evidence of anthropogenic global warming over the past 16 32 years.

If warming over the past 15 years has been so marginal that even people who believe firmly in human - caused global warming admit it isn't significant, what's all the fuss about?

Although Lawson and his Global Warming Policy Foundation have been discredited and attacked by numerous scientists and senior politicians, his thinktank continues to receive significant coverage, wrongfully distorting the public and policy debate over climate change.

Based on previously reported analysis of the observations and modelling studies this is neither inconsistent with a warming planet nor unexpected; and computation of global temperature trends over longer periods does exhibit statistically significant warming.

Other scientists argue that there has been some man - made global warming, but that most of the global warming is natural in origin, and that man - made global warming will only gradually become significant over the next century or so.

As I predicted two weeks ago, there has been a media and blog frenzy over the statement by climatologist Phil Jones that global warming since 1995 has not been «statistically significant».

I'm very convinced that the physical process of global warming is continuing, which appears as a statistically significant increase of the global surface and tropospheric temperature anomaly over a time scale of about 20 years and longer and also as trends in other climate variables (e.g., global ocean heat content increase, Arctic and Antarctic ice decrease, mountain glacier decrease on average and others), and I don't see any scientific evidence according to which this trend has been broken, recently.

Anomalies in the volcanic - aerosol induced global radiative heating distribution can force significant changes in atmospheric circulation, for example, perturbing the equator - to - pole heating gradient (Stenchikov et al., 2002; Ramaswamy et al., 2006a; see Section 9.2) and forcing a positive phase of the Arctic Oscillation that in turn causes a counterintuitive boreal winter warming at middle and high latitudes over Eurasia and North America (Perlwitz and Graf, 2001; Stenchikov et al., 2002, 2004, 2006; Shindell et al., 2003b, 2004; Perlwitz and Harnik, 2003; Rind et al., 2005; Miller et al., 2006).

Jin et al. (2004) show that zonal mean UHI has 1 - 3 degree warming over the Northern Hemisphere latitudes, implying that the collective UHI may be a significant contributing factor in the overall global warming signal

For instance, Emanuel, 2011 (Abstract; Google Scholar access) suggests that a global warming signal could become statistical significant sometime over the next century or two, and that there could be some indications on time scales as short as 25 years.

Shaviv and Veizer's paper was accompanied by a press release titled «Global warming not a man - made phenomenon», in which Shaviv is quoted stating: «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man&rGlobal warming not a man - made phenomenon», in which Shaviv is quoted stating: «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man&rglobal temperature, since only about a third of the warming over the past century should be attributed to man».

Interestingly, Penner et al. find that whether the climate sensitivity parameter is on the low or high end, reducing anthropogenic emissions of the short - lived warming pollutants would achieve a significant reduction in global warming over the next 50 - 100 years.

The global temperature empirical evidence is so clear cut, and verified, that two of the most prominent climate scientists on opposing sides of the global warming issue agree on the science fundamentals: there has been no statistically significant warming over the last 15 years.

iii) Over the last 3 decades, every individual station north of 70o indicates warming, 13 of 17 are significant at 95 % confidence, all estimated trend rates are faster than the global average, some are more than five times as fast.

And I assume the Sierra Club would issue a public retraction if confronted with the facts that the data are precisely as I described that over the last 18 years there has been no significant warming and indeed that is why global warming alarmists invented the term «the pause» to explain what they called the pause in global warming because the data demonstrate what you just said, that the Earth is cooking and warming, is not back up by the data.

The variation in the sun's energy over the course of the 20th century just isn't significant enough to account for the rapid global warming we're experiencing now.

I have used a hybrid version of the Cowtan Way global temperature data set and it definitely shows a significant difference in warming in the Arctic region over the past quarter century when compared to other data sets and most climate models.

Though SAG and SRM can achieve significant cooling anomalies over large areas, it comes at a cost of a far worse overall global warming.

However, on a more local level, global warming may have a significant impact, as original and newly introduced species spread faster from one place to another and take over new patches of habitat.

«Because the effects of volcanic eruptions and of ENSO are very short - term and that of solar variability very small, none of these factors can be expected to exert a significant influence on the continuation of global warming over the coming decades.

«In light of these significant errors and omissions, the conclusions reached by S&O are not sound and should not be relied upon,» Neuendorf wrote of Oreskes» report showing Exxon used advertisements to gloss over internal records on global warming.

This mirrors the significant rise in global temperatures detected over the past 30 years, supporting the conclusion that there is a global trend toward enhanced glacier frontal recession in recent decades and providing support for the assertion that glacier recession can be attributed to recent warming.»

The updated data shows a statistically significant global warming trend over the 1998 - 2012 period and the authors note that their results «do not support the notion of a «slowdown» in the increase of global surface temperature.»

The blue 1 - year (12 - month) trends show the dramatic global warming trend reversal over the most recent months - from a peak in March 2016 to what now amounts to being a significant cooling trend by October 2016.

Australian Poll (from David Spratt's blog - ClimateCodeRed): «In the last six years, support in Australia for the view that global warming is a serious and pressing problems that requires taking steps now, even if it involves significant costs, fell from over 60 % to under 40 %, according to Lowy Institute polling (below).

Indeed, rainfall data reveal significant increases of heavy precipitation over much of Northern Hemisphere land and in the tropics (27) and attribution studies link this intensification of rainfall and floods to human - made global warming (28 ⇓ — 30).

Global surface temperature data shows a lack of statistically significant warming over the last 15 years — a development that has baffled climate scientists.

If a trend, comparable to the one found in this study, persisted throughout the 20th century, it would have provided a significant component of the global warming the Intergovernmental Panel on Climate Change reports to have occurred over the past 100 years,» he said.»

Not all climate expert are in complete denial, some have stopped denying that natural variability has been a significant factor in global warming over the last century.

Casual readers may have thought this is a relatively recent obsession of his (3 articles and responses over the last month), however, Cockburn has significant form * and has a fairly long history of ill - informed commentary on the subject of global warming.

As illustrated above, neither direct nor indirect solar influences can explain a significant amount of the global warming over the past century, and certainly not over the past 30 years.