Sentences with phrase «decadal periods»

The sun is the primary temperature driver and warms the oceans in which huge quantities of heat are stored and released into the atmosphere over long multi decadal periods of time usually operating via the oscillations in each ocean.

The first 2 trendlines are sub-decadal and should be ignored (although they fit my hypothesis), but the following 3 are decadal periods with distinct trends.

Because the long - term warming trends are highly significant relative to our estimates of the magnitude of natural variability, the current decadal period of stable global mean temperature does nothing to alter a fundamental conclusion from the AR4: warming has unequivocally been observed and documented.

Hence, it is misuse of a model to accept that its «projections» of anything for several decades ahead are valid when the model has not existed for decades: this is a misuse of the model because the model can not have any demonstrated forecasting skill for decadal periods and, therefore, is not a valid tool for the purpose.

Although 1740 to 1830 appears to be a a period of relative stability according to the 50 year records, many warm and cold decadal periods can be noted.

Using this additional downscaling step, the GFDL hurricane model reproduces some important historical characteristics of very intense Atlantic hurricanes, including the wind speed distribution and the change of this distribution between active and inactive decadal periods of hurricane activity (Fig. 1 of Bender et al. 2010).

Additionally, the observed surface temperature changes over the past decade are within the range of model predictions (Figure 6) and decadal periods of flat temperatures during an overall long - term warming trend are predicted by climate models (Easterling & Wehner 2009).

Some scientists question the reliability of the observations, whereas others, who accept them as reliable, suggest that the correlation may be caused by other physical phenomena with decadal periods or by a response to volcanic activity or El Niño.

To understand coral resilience in the face of the variety of onslaughts, coral reefs must be seen as dynamic systems that oscillate over decadal periods, as well as centuries and millennia.

Many projects have an expected life of twenty to forty years, meaning that investors need to consider what the upside and downside scenarios are over decadal periods.