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Comments on ‘Spatial structure of ultra-low frequency variability of the flow in a simple atmospheric circulation model’ by I. N. James and P. M. James (October 1992, 118, 1211–1233.)

✍ Scribed by Steven B. Feldstein; Walter A. Robinson

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 397 KB
Volume: 120
Category: Article
ISSN: 0035-9009
DOI: 10.1002/qj.49712051714

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✦ Synopsis

Abstract

James and James (1992) examine internally generated interannual variability in a multi‐level primitive‐equation model. The authors claim that the variability in the global mean relative angular velocity is associated with fluctuations in the mid‐latitude zonally‐averaged zonal winds. We question this relationship, and present results from an aqua‐planet GCM which indicate that, instead, the global mean relative angular velocity is primarily related to changes in the tropical zonally‐averaged zonal winds. Furthermore, we also question whether the ‘ultra‐low‐frequency variability’ examined by James and James is not simply just ‘climate noise’.

📜 SIMILAR VOLUMES

Reply to comments by S. B. Feldstein and

Reply to comments by S. B. Feldstein and W. A. Robinson on ‘Spatial structure of ultra-low frequency variability of the flow in a simple atmospheric circulation model’ (October 1992, 118, 1211–1233)

✍ I. N. James; P. M. James 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 136 KB

## Abstract The note by Feldstein and Robinson (hereafter referred to as FR) raises two questions. The first is whether the EOF1 of zonal wind in the numerical integrations that we carried out is correlated with the atmospheric angular velocity or with the mean angular momentum. The second is wheth