Volume 105, Number 2, January 2014
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||13 February 2014|
Nonlinear time series temperature modeling based on normal form
1 NanoTrans solutions - Ruth 8, str., Haifa, Israel
2 Financial Engineering Laboratory, Faculty of Industrial Engineering, Technion - Israel Institute of Technology Technion City, Haifa, Israel
Received: 8 April 2013
Accepted: 16 January 2014
In this work nonlinear modeling of surface temperature is performed. To this end, we derive a simple physical model based on the reduction of Navier-Stokes-Boussinesq equations in rotating coordinates. The model is fit against low-pass embedding filtered real data from 10 stations in Europe and the near East. Using a learning set of 14000 points and forecasting 300 points forward, we obtain a good fit for 300 days ahead. Two key results are the reduction of a weather model to a six-dimensional center manifold that captures the main dynamics, and demonstration of nonlinearity in the time series is established through embedology.
PACS: 92.60.-e – Properties and dynamics of the atmosphere; meteorology / 05.45.Tp – Time series analysis / 05.45.Ac – Low-dimensional chaos
© EPLA, 2014
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