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- Title
MINIMIZING STOCHASTICITY IN THE NAO INDEX.
- Authors
LIND, PEDRO G.; MORA, ALEJANDRO; HAASE, MARIA; GALLAS, JASON A. C.
- Abstract
We show that the monthly North Atlantic Oscillation index routinely used in climatology as an indicator for global climate variability is not an optimal choice. A critical Markov analysis of the two pressure time-series for both, monthly and daily NAO index, indicates that the monthly index, due to its low sampling rate, contains higher stochastic terms than the daily index. Applying a recently developed variationally optimized Markov analysis leads to a new NAO index with minimal stochasticity.
- Subjects
NORTH Atlantic oscillation; LANGEVIN equations; MARKOV processes; STOCHASTIC analysis; CLIMATOLOGY
- Publication
International Journal of Bifurcation & Chaos in Applied Sciences & Engineering, 2007, Vol 17, Issue 10, p3461
- ISSN
0218-1274
- Publication type
Article
- DOI
10.1142/S0218127407019214