Spotting structure in complex time dependent flow

Analysing structure in complex time dependent flow fields is a challenging problem. Spot noise is a technique which utilizes texture for the visualization of flow fields. In this paper, two extensions of spot noise are discussed. These extensions allow spot noise to be used for very detailed analysis of time dependent flow fields. Two applications are discussed: a large data set resulting from a direct numerical simulation of turbulence and a data set resulting from a global climate data.