Decrease of Rossby Wave Breaking Frequency over the Middle North Pacific in Boreal Summer under Global Warming in Large-Ensemble Climate Simulations
نویسندگان
چکیده
Future change of Rossby wave breaking (RWB) frequency over the middle North Pacific (MNP) in August and related features large-scale atmospheric circulation are examined using large-ensemble simulations current future climates with a global model. Correlation analysis indicates that RWB MNP climate can show relationship El-Niño Southern Oscillation as reanalysis. The shows significant decreases MNP, compared climate. upper troposphere weakening Asian summer monsoon consequent southward shifted jet. decreased is associated modulated jet through reduced diffluence deceleration basic state region. propagation Eurasia midlatitudes also clearly climate, consistent MNP. correlation histogram analyses experiments indicate significantly suppressed convective activities east Philippines diagnosis ω -equation further dynamical impact on weakened extension Mid-Pacific trough dynamically induced ascent Philippines.
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ژورنال
عنوان ژورنال: Journal of the Meteorological Society of Japan
سال: 2021
ISSN: ['0026-1165', '2186-9049', '2186-9057']
DOI: https://doi.org/10.2151/jmsj.2021-042