Approximation of ensemble members in ocean wave prediction

Authors: LEANDRO FARINA; ANTÔNIO M. MENDONÇA; JOSÉ P. BONATTI

Source: Tellus A, Volume 57, Number 2, March 2005 , pp. 204-216(13)

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Abstract:

An efficient method for generating members in a ocean wave ensemble prediction system is proposed. A linearization of the wave model WAM is used to obtain approximations of the ensemble members. This procedure was originally introduced in a dynamical assimilation scheme where Green's functions play a central role. The evaluation of member approximations can be carried out in a fraction of the time required by the full model integration. This aspect of the method suggests a way of increasing the ensemble size as well as refining the model resolution without increasing computational costs.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1600-0870.2005.00113.x

Affiliations: 1: Centro de Previsão de Tempo e Estudos Climáticos, Instituto Nacional de Pesquisas Espaciais, Cachoeira Paulista, SP 12630-000, Brazil

Publication date: 2005-03-01