Sentences with phrase «observed effects of the warming»

# 102 Kevin: SA claims that «observed effects of the warming that has already occurred as a result of the greenhouse gases we have already emitted... are already causing massive and costly harm.»

The actual observed effects of the warming that has already occurred, as a result of the greenhouse gases we have already emitted, are self - evidently already «dangerous» since they are already causing massive and costly harm.

Not exact matches

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.

The future of the currents, whether slowing, stopping or reversing (as was observed during several months measurements), could have a profound effect on regional weather patterns — from colder winters in Europe to a much warmer Caribbean (and hence warmer sea surface temperatures to feed hurricanes).

The observed amount of warming thus far has been less than this, because part of the excess energy is stored in the oceans (amounting to ~ 0.5 °C), and the remainder (~ 1.3 °C) has been masked by the cooling effect of anthropogenic aerosols.

In regions where the effects of these circulation variations are similar to global warming effects, new extremes are observed.

The distinct behaviour observed when VFX contamination, acidification and warming acted alone or in combination highlighted the need to consider the likely interactive effects of seawater warming and acidification in future research regarding the toxicological aspects of chemical contaminants.

While considering the possible grand minimum this century we must also consider the effect of the Grand maxima we experienced during the last century and it's possible contribution to observed warming.

And it doesn't change the fundamental fact that human emissions of CO ₂ are almost certainly responsible for more than 100 % of the observed warming, once the effect of aerosols is accounted for.

Warming is observed in ocean basins; the match with computer models gives a clear signature of greenhouse - effect wWarming is observed in ocean basins; the match with computer models gives a clear signature of greenhouse - effect warmingwarming.

Concern about global warming is not based primarily on models, but rather on an understanding of the basic physics of the greenhouse effect and on observed data.

We know GHGs warm and that they warm sufficiently to explain the observed effects (more than sufficiently - by a factor of a few).

The net effect of these anomalous winds is a cooling in the 2012 global average surface air temperature of 0.1 — 0.2 °C, which can account for much of the hiatus in surface warming observed since 2001.

In Hansen Nazarenko 2004, Hansen wrote that «Our estimate for the mean soot effect on spectrally integrated albedos in the Arctic... is about one quarter of observed global warming.»

The observed warming is likely the result of a combined effect: data strongly suggest that the AMO has been in a warming phase for the past two or three decades, and we also know that at the same time anthropogenic global warming is ongoing.

In particular, we have a very strong reason to connect GHG's to observed warming, and multiple lines of physics and data for bracketing the magnitude of this effect — which all but relegates GCM's to the trivial - influience - at - best bin.

In this regard, I would observe that at least one important AGW effect, rising sea level, does not depend on a specific regional outcome so much as on global mean T. (At least, I think this is so (because my understanding is that most of the rise comes from lower density of warmer water, not from melting ice sheets — though again, not 100 % sure on this point)-RRB-.

To clarify my above comment, I was suggesting that the observed rise in ocean heat content would be substantial with or without the La Nina effect, representing primarily the persistence of a long term warming trend.

WRT human contribution to observed warming circa 2014 Gavin Schmidt indicates the human contribution is likely 110 % of observed due to the cooling effect of anthropogenic SO2 emissions (and other).

As in other climate phenomena, there may be a multitude of factors responsible for the observed trends — but are Gray, Pielke, Klotzbach and Landsea really claiming that global warming has no effect on SSTs?

# 92 Spencer el al 2007 paper doesn't really support the precise mechanism proposed by Lindzen for Iris effect, but more simply observes a strong TOA negative correction associated with warming events at 20 ° S - 20 ° N (that is: in the 2000 - 2005 period of observation, the most significative warming episodes of the surface + low troposphere — 40 days or more — leads to a negative SW+LW cloud forcing at the top of the atmosphere).

a) atmospheric CO2 from human activity is a major bause of observed warming in the 1980's and 1990's, c) that warming is overstated due to a number of factors including solar effects and measurement skew d) the data going back 150 years is of little reliability because it is clustered so heavily in northeast america and western europe rather than being global e) the global climate has been significantly shifting over the last thousand years, over the last ten thousand years, and over the last hundred thousand years; atmospheric CO2 levels did not drive those changes, and some of them were rapid.

109 SecularAnimist: I have repeatedly asked you for the basis of your claim that observed effects of anthropogenic warming are already causing massive and costly harm.

Multi-signal detection and attribution analyses, which quantify the contributions of different natural and anthropogenic forcings to observed changes, show that greenhouse gas forcing alone during the past half century would likely have resulted in greater than the observed warming if there had not been an offsetting cooling effect from aerosol and other forcings.

Empirically observed effects of anthropogenic warming, eg.

The contribution of greenhouse gases is greater than the observed warming, while the total anthropogenic contribution is thought to be around 0.7 °C because of the cooling effect of aerosols.

Sciencecodex: A recent study indicated that the urbanization in eastern China has significant impact on the observed surface warming and the temporal - spatial variations of urbanization effect have been comprehensively detected.

The IPCC concluded that «the effects [of greenhouse gases], together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have been the dominant cause of the observed warming since the mid-20th century.»

Here's the most relevant to consideration of the effects of global warming, the trend since 1970, which demonstrates how much drier the climate has become over the period in which warming has been observed.

Bertrand was investigating the effect of solar and volcanic influence on climate and concluded «these are clearly not sufficient to explain the observed 20th century warming and more specifically the warming trend which started at the beginning of the 1970s».

Generally, the remaining uncorrected effect from urban heat islands is now believed to be less than 0.1 C, and in some parts of the world it may be more than fully compensated for by other changes in measurement methods.4 Nevertheless, this remains an important source of uncertainty.The warming trend observed over the past century is too large to be easily dismissed as a consequence of measurement errors.

The scale of the solar induced natural variability that has been observed over more than 500 years swamps any warming effect from human CO2.

But the observed higher summer temperatures of recent years show more of the true effects of global warming, according to the research.

Like Foster and Rahmstorf, Lean and Rind (2008) performed a multiple linear regression on the temperature data, and found that although volcanic activity can account for about 10 % of the observed global warming from 1979 to 2005, between 1889 and 2006 volcanic activity had a small net cooling effect on global temperatures.

A number of studies have used a variety of statistical and physical approaches to determine the contribution of greenhouse gases and other effects to the observed global warming, like Foster & Rahmstorf and Lean & Rind.

The first installment of the IPCC's report, dealing with the observed effects of global warming, was published on Sept..

«Lorenz and others argued that the recently observed global warming might be no evidence of a greenhouse effect or any other external influence, but only a chance excursion in the drunkard's random walk.»

If we had a Tardis, we would be able to go back in time to the Paleoecene - Eocene Thermal Maximum (PETM) about 55 - 56 million years ago, a time of substantial natural global warming, and observe the Greenhouse Effect growing stronger.

The particularly striking flat portion of MRES is from 1860 to 1950, which is strong support for my point that global warming can already be observed starting in 1860 as shown in Figure 2, Observed Global Warming or OGW, and follows a curve that is in remarkable agreement with what the greenhouse effect hypothesis should pwarming can already be observed starting in 1860 as shown in Figure 2, Observed Global Warming or OGW, and follows a curve that is in remarkable agreement with what the greenhouse effect hypothesis should observed starting in 1860 as shown in Figure 2, Observed Global Warming or OGW, and follows a curve that is in remarkable agreement with what the greenhouse effect hypothesis should Observed Global Warming or OGW, and follows a curve that is in remarkable agreement with what the greenhouse effect hypothesis should pWarming or OGW, and follows a curve that is in remarkable agreement with what the greenhouse effect hypothesis should predict.

Figure 3: Percent contributions of various effects to the observed global surface warming over the past 50 - 65 years according to Tett et al. 2000 (T00, dark blue), Meehl et al. 2004 (M04, red), Stone et al. 2007 (S07, green), Lean and Rind 2008 (LR08, purple), Huber and Knutti 2011 (HK11, light blue), Gillett et al. 2012 (G12, orange), and Wigley and Santer 2012 (WS12, dark green).

Indeed on the basis of just a brief glance at the chart that point of transition is obviously lower than the average TSI between 1961 and 2001 hence my assertion that during those years there was a steady solar warming effect which adequately explains the observed warming without reliance on rising CO2.

1) Due to the short atmospheric lifetime of tropospheric sulfates, if their cooling effect was so large we would observe cooling or, at the very least, less warming over the emitting areas and downwind from them, especially China and some Eastern European regions.

My opinion expressed elsewhere is that almost all the temperature changes we observe over periods of less than a century are caused by cyclical changes in the rate of energy emission from the oceans with the solar effect only providing a slow background trend of warming or cooling for several centuries at a time.

When combined with the other human effects, the net human influence is responsible for approximately 102 % of the observed warming from 1851 to 2010, and approximately 113 % over the 50 - year periods from 1951 to 2000 and 1961 to 2010 (averaged together).

Now imagine if there was already a known mechanism of IR scattering that reduced IR loss to space resulting in a heating effect, and that the particulars of the mechanism were well understood, and that the substances responsible for this mechanism were very well known, and that we were increasing the concentration of this substance quite dramatically, and that we we seeing temperature rises as had had been hypothesized almost a century ago, and that some signs indicative of this particular mechanism for warming had been observed.

We can also observe the effects of global warming in worldwide glacier retreat, declining Arctic ice sheets, sea level rise, warming oceans, ocean acidification, and increased intensity of weather events.

[M] ultiple lines of evidence indicate that human influences have had an increasingly dominant effect on the climate warming observed since the mid-twentieth century.

«multiple lines of evidence indicate that human influences have had an increasingly dominant effect on the climate warming observed since the mid-twentieth century» - a handful of papers a year that only most ardent warmists can find against the thousand of natural influence showing papers.

Steve Fitzpatrick says: Are you saying that the accumulated effects of the El Nino cycle * could * account for all (or nearly all) of the observed warming of the last 100 years...»

I have presented nothing in this post that would allow me to state that «the accumulated effects of the El Nino cycle definitely are responsible for all (or nearly all) of the observed warming.»