Sentences with phrase «warming over the last century»

''... For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.»

For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.»

However, this has been shown by other authors, such as Anderson et al. 2013, who demonstrate rapid warming over the last century from geological data.

Global warming over the last century is thought by many to be about 0.6 degrees Centigrade.

The Oz approach to global warming is increasingly informed by hard data that show trivial national warming over the last century plus, as recorded in old, official puublications like Commonwealth Year Books from the 1950s and a CSIR (O) publication of the state of the climate from recording start to 1933.

The world has indeed warmed over the last century, but not enough to be consistent with catastrophic forecasts, and not all due to CO2

Instead, the GISS team says, global warming over the last century up until 1975 was slow, with large fluctuations.

This slideshow shows how well models predict past temperature trends, and the extent to which human activity was the primary cause of warming over the last century.

There is no evidence that the seas in Sandy's storm track have seen any warming over the last century.

People simply don't notice changes as small as 0.5 °C, the amount of global warming over the last century.

On a related note, I'd love to see a TV channel going out on the street and asking people by how much they think the planet has supposedly warmed over the last century.

I did this because Anthony Watts and Joe D'Aleo published a document claiming that the GHCN data, and the way it was processed, exaggerated estimates of how much the globe has warmed over the last century or more.

Since the differences are either nearly as large or larger than the average global warming over the last century (about 0.06 °C / decade),

It's a subtle argument, because aerosol cooling has clearly been less than greenhouse warming — if not, the planet wouldn't have gotten warmer over the last century.

Since the differences are either nearly as large or larger than the average global warming over the last century (about 0.06 °C / decade), I'm not sure what you mean by «reflects»...

The graph shows a long, relatively unwavering line of temperatures across the last millennium (the stick), followed by a sharp, upward turn of warming over the last century (the blade).

Regardless of the merits of his case, AGW has caused considerable warming over the last century (something Steel acknowledges).

And if Co2 is left with credit for just 0.3 - 0.4 C warming over the last century, it is a very tough road to get from this past warming to sensitivities as high as 3C or greater.

«The [Hockey Stick] graph shows a long, relatively unwavering line of temperatures across the last millennium (the stick), followed by a sharp, upward turn of warming over the last century (the blade).

Not just that it is unlikely that, or unknown whether, more than 50 % of warming over the last century is ACO2 caused.

If I recall correctly, you previously felt that there is a non-negligible possibility that more than 50 % of warming over the last century is attributable to AC02.

It is a 1 C warming over the last century.

For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.

Each record is constructed on the basis of monthly average raw data from selected meteorological stations around the world, and all show similar magnitudes and rates of warming over the last century.

It really isn't clear to me what you point is, but I think it i pretty safe to rule out continental drift as a factof in the warming over the last century.

Alarmists want to fight the war over whether the greenhouse gas effect of CO2 is true and whether the world has seen warming over the last century, both propositions that skeptics like myself accept.

The increasing power of computer reconstructions since MBH98 and 99 resulted in the more sophisticated «spaghetti graphs» using multiple proxies, which somewhat modified the findings of the earlier hockey stick, but reinforced the notion of a world rapidly warming over the last century, in a manner unprecedented for at least a thousand years.

A similar lack of anomalous warming over the last century has been noted in well - established urban centres such as London and Vienna (Jones et al., 2008; Jones and Lister, 2009).

That panel's first assessment report in 1990 concluded that «the size of the warming over the last century is... of the same magnitude as natural climate variability» and that «the unequivocal detection of the enhanced greenhouse effect from observations is not likely for a decade or more.»

This chart from the IPCC's fifth assessment, released Friday, shows warming over the last century, distributed across the globe.

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.

On these points he is pretty much in line with Anthony Watts, who also agrees that the globe has been warming over the last century.

Not exact matches

Greenhouse gases add those watts by acting as a blanket, trapping the sun's heat; they have warmed Earth by roughly 0.75 degree Celsius over the last century.

The hurricane is spinning over waters that have warmed in the last century as a result of human activity.

The world's oceans have already risen by an average of 8 inches over the last century from a combination of water added by ice melt and the expansion of ocean waters as they warm.

Given the one percent rise of temperature over the last century is an «average», and the Arctic and Antarctic regions are now warming faster, purportedly by up to eleven degrees, there must be areas that are now cooler.

Over the last half - century around 93 % of global warming has actually gone into heating the ocean.

If the same conditions that caused the storm had occurred in a world without the warming observed over the last century, it would not have been as severe.

Naturally occurring changes in winds, not human - caused climate change, are responsible for most of the warming along the US West Coast over the last century, according to a new study.

Knutti et al. (2002) also determine that strongly negative aerosol forcing, as has been suggested by several observational studies (Anderson et al., 2003), is incompatible with the observed warming trend over the last century (Section 9.2.1.2 and Table 9.1).

Simulations including an increased solar activity over the last century give a CO2 initiated warming of 0.2 ˚C and a solar influence of 0.54 ˚C over this period, corresponding to a CO2 climate sensitivity of 0.6 ˚C (doubling of CO2) and a solar sensitivity of 0.5 ˚C (0.1 % increase of the solar constant).

However, one of the panel's reservations was that ``... a statistical method used in the 1999 study was not the best and that some uncertainties in the work «have been underestimated,»...» The panel concluded «Based on the analyses presented in the original papers by Mann et al. and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium.

Reducing the heat lost to the atmosphere allows the oceans to steadily warm over time - as has been observed over the last half century.

But regardless of that detail, and consistent with local climate warming, the ice break - up date have advanced about 7 days over the last century.

Since the CMIP5 models used by the IPCC on average adequately reproduce observed global warming in the last two and a half decades of the 20th century without any contribution from multidecadal ocean variability, it follows that those models (whose mean TCR is slightly over 1.8 °C) must be substantially too sensitive.

These have shown about a 0.7 C warming over land during the last century, with somewhat less increase indicated over oceans.

While periods of increased and decreased warming exist over the 132 - year period, the linear rate is still ~ 0.6 C / century, and the most recent monthly GISS values fall right on the linear trend (the linear trend value for the Feb. 2012 temperature anomaly is +0.38 C, while the last two months have been +0.35 and +0.40 C.)

Given the one percent rise of temperature over the last century is an «average», and the Arctic and Antarctic regions are now warming faster, purportedly by up to eleven degrees, there must be areas that are now cooler.

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.

Because we understand the energy balance of our Earth, we also know that global warming is caused by greenhouse gases — which have caused the largest imbalance in the radiative energy budget over the last century.