A strengthened teleconnection of the quasi-biennial oscillation and tropical easterly jet in the past decades in E3SMv1

The Energy Exascale Earth System Model version 1 (E3SMv1) is a new global model that can generate a weakened tropical easterly jet (TEJ) during the easterly quasi-biennial oscillation (EQBO) and a strengthened TEJ during the westerly QBO (WQBO), which is referred to as the QBO-TEJ teleconnection. Although the longitudinal structure of the QBO-TEJ teleconnection is different between reanalysis and simulations, we hypothesize that simulations can still provide insights into the observed long-term changes in the QBO-TEJ teleconnection. The Atmospheric Model Intercomparison Project historical simulations (AMIP-historical) generate a strengthened trend in the correlation between the QBO and TEJ indices in the period of 1950-2014 as in reanalysis. The comparison of the AMIP-historical and the Coupled Model Intercomparison Project coupled historical simulations (coupled-historical) shows that the warming of the Indian Ocean has played a vital role in the strengthened QBO-TEJ teleconnection over the past six decades.

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Related Dataset #1 : E3SM-Project E3SM1.0 model output prepared for CMIP6 CMIP amip

Related Dataset #2 : E3SM-Project E3SM1.0 model output prepared for CMIP6 CMIP historical

Related Dataset #3 : PCMDI AMIP SST and sea-ice boundary conditions version 1.1.3

Related Dataset #4 : NOAA Extended Reconstructed Sea Surface Temperature (ERSST), Version 5
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Author Li, Yuanpu
Richter, Jadwiga H.
Chen, Chih-Chieh
Tang, Q.
Publisher UCAR/NCAR - Library
Publication Date 2023-08-16T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-11T15:15:28.790813
Metadata Record Identifier edu.ucar.opensky::articles:26560
Metadata Language eng; USA
Suggested Citation Li, Yuanpu, Richter, Jadwiga H., Chen, Chih-Chieh, Tang, Q.. (2023). A strengthened teleconnection of the quasi-biennial oscillation and tropical easterly jet in the past decades in E3SMv1. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7mc9411. Accessed 07 August 2025.

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