Abstract
This study investigated the contributions of mid–high-latitude circulation anomalies to the extremely hot summer (July and August; JA) of 2018 over Northeast Asia (NEA). The JA-mean surface air tem...
Highlights
An extremely hot summer (refers to July and August (JA) in this study) occurred in 2018 over Northeast Asia (NEA), including North and Northeast China, southeastern parts of Mongolia, North Korea, South Korea, and southern parts of Japan
The positive anomaly of larger than two standard deviations occupied a large domain, corresponding well to the area of remarkable warming (Figure 1(a)). This is consistent with previous studies in that a local-intensified geopotential height facilitates the occurrence of a hot summer over NEA (e.g. Gong, Pan, and Wang 2004; Zhu et al 2012; Chen et al 2016), and suggests that the anomalous warming in 2018 was largely attributable to the circulation anomaly
This study investigated the circulation anomalies associated with the extraordinarily hot summer (JA) of 2018 over NEA
Summary
An extremely hot summer (refers to July and August (JA) in this study) occurred in 2018 over Northeast Asia (NEA), including North and Northeast China, southeastern parts of Mongolia, North Korea, South Korea, and southern parts of Japan. Warm summers are associated with local positive anomalies of geopotential height (Gong, Pan, and Wang 2004; Zhu et al 2012; Gao et al 2014; Chen and Lu 2015; Chen et al 2016).
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