Sentences with phrase «observed warming signal»

He goes on to conclude that the small fractional change in station wind - speed values relative to reanalysis values are unlikely to have caused a global bias in trends of Tmin in calm conditions approaching -0.1-C over the 50 - year period, equivalent to -0.02-C / decade, 1 / 10 - th of the observed warming signal.

Not exact matches

and, «The observed drying well exceeds that predicted in any of the GCMs as a consequence of warming, even though we have not accounted for the impact of UT / LS moistening on the UTH signal.

But a strong signal is found in proportions of both weaker and stronger hurricanes: the proportion of Category 4 and 5 hurricanes has increased at a rate of ~ 25 — 30 % per °C of global warming after accounting for analysis and observing system changes.

«One of the most significant signals in the thermometer - observed temperature record since 1900 is the decrease in the diurnal temperature range over land, largely due to warming of the minimum temperatures... Climate models have in general not replicated the change in diurnal temperature range well.

When internal variability is filtered from the smoothed observed temperature (solid black line), the cleaned signal (dashed line) shows nearly monotonic warming throughout the 20th Century.

From what little observed data we have, the warming is negligible and the signal can not be detected from the noise.

In other words natural variability dominates the observed record making it impossible to detect any human - caused global warming signal even if one were to exist (which there is no proof of).

Removal of that hidden variability from the actual observed global mean surface temperature record delineates the externally forced climate signal, which is monotonic, accelerating warming during the 20th century.

That is an extremely large signal (e.g., of similar magnitude to what we can easily observe in the damage record between warm and cold phases of ENSO).

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).