Internally Generated and Externally Forced Multidecadal Oceanic Modes and Their Influence on the Summer Rainfall over East Asia

作者: Dong Si , Aixue Hu

DOI: 10.1175/JCLI-D-17-0065.1

关键词: Forcing (mathematics)Pacific decadal oscillationEnvironmental scienceEnsemble simulationCommunity earth system modelClimatologyAtlantic multidecadal oscillationRiver valleyEast AsiaInterdecadal Pacific Oscillation

摘要: AbstractInterdecadal oceanic variabilities can be generated from both internal and external processes, these significantly modulate climate on global regional scales, including the warming slowdown in early twenty-first century rainfall East Asia. By analyzing simulations a unique Community Earth System Model (CESM) Large Ensemble (CESM-LE) project, it is shown that interdecadal Pacific oscillation (IPO) primarily an internally variability, while Atlantic multidecadal (AMO) may variability by processes modulated forcing twentieth century. Although observed relationship between IPO Yangtze–Huaihe River valley (YHRV) summer China well simulated preindustrial control twentieth-century ensemble simulation, none of members reproduce time evolution YHRV ...

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