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University of Cambridge > Talks.cam > British Antarctic Survey > Phase-synchronization of tropical variability in global climate model simulations of the recent past
Phase-synchronization of tropical variability in global climate model simulations of the recent pastAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Dr Scott Hosking. If external to BAS, please email the organiser in advance to gain access to the building The quasibiennial oscillation (QBO) and semiannual oscillation (SAO) are the dominant modes of variability occuring in the tropical stratosphere. Previous studies have shown that the onset of the westerly phase of the QBO is seeded by the descending phase of the SAO . A recent study by Read and Castrejon-Pita (2012) showed evidence for phase-synchronisation of the QBO with the SAO . Timeseries of monthly-mean zonal mean zonal wind are examined in model simulations submitted to the Coupled Model Intercomparison Project Phase 5 (CMIP5). Twenty-two models were examined for the presence of a QBO in the equatorial stratosphere, of these only 3 displayed this behaviour. These models were then tested for phase synchronisation; only one model (MPI-ESM-MR) showed behaviour consistent with observations. This talk is part of the British Antarctic Survey series. This talk is included in these lists:
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