Predictability in a Model of Geophysical Turbulence

Predictability in a Model of Geophysical Turbulence

The nature of predictability is examined in a numerical model relevant to the midlatitude atmosphere and oceans. The approach followed is novel and uses new theoretical tools from information theory, namely entropy functionals, as measures of information content and their application to finite ensembles. Particular attention is paid here to the practical application of these methods to the prob...

Geophysical Turbulence Geophysical Turbulence

Predictability and Dynamics of Geophysical Fluid Flows

The central objective of my research in this project is to understand the mathematical and physical connections between the bred-growing-mode and singular vector techniques recently developed for numerical weather prediction, the Lyapunov vectors and exponents of dynamical systems theory, and instability theories of geophysical fluid dynamics. My intent is to gain insight into fundamental mathe...

On a possible mechanism of anomalous diffusion in geophysical turbulence

The main characteristic features of the geophysical turbulence are differential (so called ,8-effect) rotation and stratification. Each of these phenomena is responsible for a specific type of waves: planetary or Rossby waves and internal gravity waves, respectively. It is well-known that e.g. for the ,8plane turbulence [1] one may have vortex-dominated (Le. close to the 2d turbulence), wave-do...

an appropriate model for exchange rate predictability in iran: comparing potential forecastability

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...