Captured QBO‐MJO Connection in a Subseasonal Prediction System
نویسندگان
چکیده
Abstract The quasi‐biennial oscillation (QBO) impacts the Madden‐Julian Oscillation (MJO) activity with a stronger MJO in QBO easterly (QBOE) than westerly (QBOW) winters. However, this relationship is poorly represented current generation climate models. For first time, paper applies stratospheric zonal‐mean nudging subseasonal prediction system to capture it. Two strong cases QBO‐neutral winter are investigated. temperature and zonal wind anomalies added separately as well together stratosphere using case hindcast. Only by while leaving free, can observed QBO‐MJO connection. tropopause instability found positively correlated amplitude, but it cannot fully explain captured free‐evolving due nudged crucial for
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2023
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2022gl102648