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Data Assimilation with Numerical model error

Presented by: 
C Budd University of Bath
Date: 
Thursday 24th November 2011 - 14:00 to 15:00
Venue: 
INI Seminar Room 2
Abstract: 
Data assimilation addresses the inverse problem of, given a set of uncertain observations and a numerical approximation to a physical system, what set of parameters, especially the initial condition, leads to a forward computation (the 'analysis') which best solves this problem. Data assimilation is widely used in meteorological applications. In this talk I will briefly describe the 4D-VAR method for data assimilation, and then show how its results are influenced by using a variety of different numerical schemes with associated numerical model error. Joint work with Sian Jenkins, Melina Freitag and Nathan Smith (Bath)
University of Cambridge Research Councils UK
    Clay Mathematics Institute The Leverhulme Trust London Mathematical Society Microsoft Research NM Rothschild and Sons