The effect of changes in observational coverage on the association between surface temperature and the Arctic oscillation

A. J. Broccoli, T. L. Delworth, N. C. Lau

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The effect of changes in observational coverage on the association between the Arctic oscillation (AO) and extratropical Northern Hemisphere surface temperature is examined. A coupled atmosphere-ocean model, which produces a realistic simulation of the circulation and temperature patterns associated with the AO, is used as a surrogate for the real climate system. The association between the AO and spatial mean temperature, as quantified by regressing the latter on the AO index, is subject to a positive bias due to the incomplete spatial coverage of the observational network. The bias is largest during the early part of the twentieth century and decreases, but does not vanish, thereafter.

Original languageEnglish (US)
Pages (from-to)2481-2485
Number of pages5
JournalJournal of Climate
Volume14
Issue number11
DOIs
StatePublished - Jun 1 2001

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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