Sentences with phrase «greenhouse warming signal»

The period since 1970 is the period associated with the largest greenhouse warming signal, which coincides with the data set on tropical cyclones that is available.

Not exact matches

NOAA research shows that the tropical multi-decadal signal is causing the increased Atlantic hurricane activity since 1995, and is not related to greenhouse warming.»

This overshoot is in the process of radiatively dissipating, and the climate will return to its earlier defined, greenhouse gas - forced warming signal.

You'll note an acceleration of those temperatures in the late 1970s as greenhouse gas emissions from energy production increased worldwide and clean air laws reduced emissions of pollutants that had a cooling effect on the climate, and thus were masking some of the global warming signal.

However, taking account of sampling uncertainty (as most more recent detection and attribution studies do, including those shown in Figure 9.9) makes relatively little difference to estimates of attributable warming rates, particularly those due to greenhouse gases; the largest differences occur in estimates of upper bounds for small signals, such as the response to solar forcing (Allen and Stott, 2003; Stott et al., 2003a).

Against such a noisy background, it is hard to detect the signal from any changes caused by humanity's increased economic activity, and consequent release of atmosphere - warming greenhouse gases such as carbon dioxide.

This makes Swanson's assertion that the 0.1 degree C rise between 1979 and 1997 — was the true underlying signal of greenhouse gas warming — moot to say the least.

There is no evidence of an «anthropogenic greenhouse warming» signal in the warming of satellite - era sea surface temperatures.

Because global warming signals are amplified in high - latitude regions, the potential for permafrost thawing and consequent greenhouse gas releases is thus large.

The satellite data signal not only the absence of substantial human - induced warming but also provide an empirical test of the greenhouse hypothesis - a test that the hypothesis fails.»

The researchers cautioned that this extreme event provides a glimpse into the region's future as greenhouse gases continue to increase, and the signal of a warming climate, even at this regional scale, begins to emerge more clearly from natural variability in coming decades.

As Curry observes, an infinite number of statements could have been made, ranging from «it is extremely likely that the anthro pogenic increase in greenhouse gases has caused some warming» (not very informative, since an infinitesimally small warming is of no policy relevance) to «it is about as likely as not that greenhouse - gas - induced warming exceeds the total observed warming» (which indicates the size of the greenhouse signal, but understates our confidence in attribution).