Time series data consisting of 671 observations of seawater temperature, observed at irregular intervals off Maria Island, Hobart, Australia, over a period of 50 years, are examined. The mean temperature exhibits an approximately linear trend which is taken as evidence of glabal warming.

Indirect estimation methods are proposed for estimating univariate ARFIMA , as well as more complex multivariate VARFIMA models. Special attention is given to comparing the finite sampling properties of the indirect estimator with Sowell's (1992a) exact time domain maximum likelihood estimator...

Policy evaluation based on the estimation of dynamic stochastic general equilibrium models with aggregate macroeconomic time series rests on the assumption that a representative agent can be identified, whose behavioural parameters are independent of the policy rules. Building on earlier work by...