Spring land temperature anomalies in northwestern US and the summer drought over Southern Plains and adjacent areas

摘要: Author(s): Xue, Y; Oaida, CM; Diallo, I; Neelin, JD; Li, S; De Sales, F; Gu, Robinson, DA; Vasic, R; Yi, L | Abstract: © 2016 IOP Publishing Ltd. Recurrent drought and associated heatwave episodes are important features of the US climate. Many studies have examined connection between ocean surface temperature changes conterminous droughts. However, remote effects large-scale land variability, over shorter but still considerable distances, on regional droughts been largely ignored. The present study combines two types evidence to address these effects: climate observations model simulations. Our analysis observational data shows that springtime in northwest is significantly correlated with summer rainfall Southern Plains its adjacent areas. simulations 2011 using a general circulation confirm observed relationship anomaly drought, suggest long-distance effect probably as large more familiar temperatures atmospheric internal variability. We conclude cool conditions increased probability abnormal heat Plains. suggests strong potential for skillful intra-seasonal predictions when such facts ones presented here considered.