Rapid update cycling with delayed observations

T. J. Payne

doi:10.1080/16000870.2017.1409061

Rapid update cycling with delayed observations

Tellus

Volume 69 (2017): Issue 1

By: T. J. Payne

Open Access

|Jan 2017

Abstract

In this paper we examine the fundamental issues associated with the cycling of data assimilation and prediction in the case where observations are received after a delay, but we seek to assimilate them immediately on receipt, or within a short time of receipt. We obtain the optimal solution to this problem in the linear and non-linear cases, and explore its relation to simplified strategies which are adaptations of contemporary methods for large-scale data assimilation. We also discuss the challenges facing such cycling in large-scale numerical weather prediction.

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