Sentences with phrase «present day climate»

The Global annual average flows of energy under present day climate conditions.

I'm particularly interested in how present day climate differs from climates in the past, and what may have caused climates to change.

So we see that comparisons of present day climate to periods 500 million years ago need to take into account the fact that the sun was 4 % less active than now.

Methane plays a large role in present day climate forcing (see «Trends of Measured Climate Forcing Agents» for more details) and has more than doubled in concentration since the pre-industrial period.

Thus the chosen ranges — while being somewhat subjective — represent to the first approximation typical scattering of simulations with different AOGCMs (e.g. SAR and TAR IPCC reports)(Houghton et al. 1996; 2001) and encompass observational data of key present day climate characteristics.

Although we can not say at present whether more or fewer hurricanes will occur in the future with global warming, the hurricanes that do occur near the end of the 21st century are expected to be stronger and have significantly more intense rainfall than under present day climate conditions.

Our results agree with recent studies that annual mean data - constraints from present day climate prove to not rule out climate sensitivities above the widely assumed sensitivity range of 1.5 — 4.5 °C (Houghton et al. 2001).

More complex metrics have also been developed based on multiple observables in present day climate, and have been shown to have the potential to narrow the uncertainty in climate sensitivity across a given model ensemble (Murphy et al., 2004; Piani et al., 2005).

The authors painstakingly digitised older archived data (back to before 1800 in one case), worked out the conventions that were used, and with a knowledge of present day climate, pieced together series and spotted potential shifts in observing location or time of day that would otherwise contaminate the record.

«Inter-model differences in the present day climate simulations inevitably carry over to future projections of climate change,» said Hagos, lead author of the study.

At GISS, he is helping to develop the GISS ocean and coupled GCMs to improve the representation of the present day climate while investigating their response to external forcing.

The second is to find a metric in the present day climate that we think is coupled to the sensitivity and for which we have some empirical data (climatological constraints).

Alexander, certainly you are right, but the question that troubles you, does not solve our problem which is to know who is responsible of the present day climate changes; I fear that changing our Hydrocarbon based economy to a Hydrogene based economy, would send a much bigger green house gas in the atmosphere, I mean water vapor

Summer temperature standard deviation, skewness and strong positive temperature anomalies in the present day climate and under global warming conditions

Yes, I deliberately glossed over the state / path - dependence issue and «real» stochasticity, this can indeed lead to a small uncertainty in the equilibrium achieved in a given experiment, but this uncertainty is very small indeed in model world, and I am sure that most scientists think it to be small in the real world too - so long as we are only talking about moderate differences in climate state, compatible with the present day climate.

For example, one approach to generating probabilistic future predictions is to implement a weighting procedure based on the performance of the present day climate simulation (e.g., Sexton et al. 2012).