Changes in the frequencies of record‐breaking temperature events in China and its association with East Asian Winter Monsoon variability

摘要: The daily maximum and minimum temperatures observed at the 1897 meteorological stations of China over past 60 years (1951–2010) are analyzed in this study to examine interdecadal variation frequency for record-breaking event (RBE) temperature context global warming. results indicate that high first decade 21st century is highest three decades from 1980s 2000s, implying a distinct warming trend. Meanwhile, frequencies low 1990s beginning also significant. In particular, RBEs occurred most but concentrated northern during 2000s. To understand why record repeatedly broken related East Asian Winter Monsoon (EAWM) variability investigated. empirical orthogonal function analysis surface air reveals mode EAWM variability, which highly associated with Arctic Oscillation (AO) activities both interannual timescales, has been intensifying since late 1990s. Corresponding intensification negative phase AO Siberian High trough intensify while polar-front jet stream strengthens subtropical westerly abnormally shifts northward. As result, anomalously strong cold masses, originated Siberia, intrude into Asia blocked by enhanced northward cannot reach low-latitude area. Therefore, extremely masses amassed mid-high latitudes Asia, resulting