Coarse-grained stochastic models for tropical convection and climate.

نویسندگان

  • Boualem Khouider
  • Andrew J Majda
  • Markos A Katsoulakis
چکیده

Prototype coarse-grained stochastic parametrizations for the interaction with unresolved features of tropical convection are developed here. These coarse-grained stochastic parametrizations involve systematically derived birth/death processes with low computational overhead that allow for direct interaction of the coarse-grained dynamical variables with the smaller-scale unresolved fluctuations. It is established here for an idealized prototype climate scenario that, in suitable regimes, these coarse-grained stochastic parametrizations can significantly impact the climatology as well as strongly increase the wave fluctuations about an idealized climatology.

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عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 100 21  شماره 

صفحات  -

تاریخ انتشار 2003