Is interannual zonal mean flow variability simply climate noise?

S. B. Feldstein

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


This study uses National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis data to investigate the extent to which interannual zonal index (ZI) fluctuations occur in the atmosphere and whether interannual ZI fluctuations can be accounted for by climate noise associated with the intraseasonal ZI. By using an empirical orthogonal function analysis, it is shown that the ZI is indeed a prominent form of interannual variability, because the interannual ZI corresponds to EOF1 (EOF2) for the winter (summer) seasons of both hemispheres. Also, by application of spectral, correlation, and χ2 analyses, it is shown that interannual ZI variability can be interpreted as arising from climate noise.

Original languageEnglish (US)
Pages (from-to)2356-2362
Number of pages7
JournalJournal of Climate
Issue number13
StatePublished - 2000

All Science Journal Classification (ASJC) codes

  • Atmospheric Science


Dive into the research topics of 'Is interannual zonal mean flow variability simply climate noise?'. Together they form a unique fingerprint.

Cite this