We demonstrate that the fast and exact Davies-Harte algorithm is valid for simulating a certain class of stationary Gaussian processes - those with a negative auto-covariance sequence for all non-zero lags. The result applies to well known classes of long memory processes: Gaussian fractionally...

We demonstrate that the fast and exact Davies-Harte algorithm is valid for simulating a certain class of stationary Gaussian processes - those with a negative autocovariance sequence for all non-zero lags. The result applies to well known classes of long memory processes: Gaussian fractionally...

Using output from a regional Swedish climate model and observations from the Swedish synoptic observational network, we compare seasonal minimum temperatures from model output and observations using marginal extreme value modeling techniques. We make seasonal comparisons using generalized...

The main lines of evidence for climate change are outlined. Alternative explanations to increased greenhouse gas concentrations are described. After discussing some statistical issues, attribution approaches are briefly described. Policy issues dealing with mitigation and adaptation are mentioned.