The third talk in the statistics colloquium series 2011-2012 at the University of Iceland will be given on Friday November 18th, see details below.
Speaker: Jenný Brynjarsdóttir, Postdoctoral Fellow, Statistical and Applied Mathematical Sciences Institute (SAMSI)
Title: Statistical Polar adventures – Downscaling temperatures over the Antarctic using a dimension reduced space-time modeling approach
Location: Room V-152 in VR-II building on the UI campus
Time: Friday November 18th, at 12:10 to 13:00.
Abstract: Dimension reduced approaches to spatio-temporal modeling are usually based on modeling the spatial structure in terms of a low number of specified basis functions. The temporal evolution of the space-time process is then modeled through the amplitudes of the basis functions. A common choice of bases are data-dependent basis vectors such as Empirical Orthogonal Functions (EOFs), also known as Principal Components. I will discuss ways to extend these ideas to modeling of two spatio-temporal processes where the primary goal is to predict one process from the other. I incorporate these methods in a Bayesian hierarchical model and show an example of downscaling surface temperatures over the Antarctic.