Recent and future changes in the combination of annual temperature and precipitation throughout China

摘要: Climate involves different combinations of temperature and precipitation, each year's combination factors can be assigned a climatic year type (CYT; e.g. Warm-Humid). Describing the changes in CYT provides more information than describing or precipitation data alone. In this study, we defined nine CYTs using probability density function annual precipitation. Recent future spatiotemporal were analysed 507-station observational projected obtained from CMIP5 multi-model ensemble under RCP2.6, RCP4.5, RCP8.5 scenarios. China was divided into six subregions to analyse changes. Obvious differences spatial patterns among various reflect climate regime throughout China. The warmth-associated (Warm-Humid, Warm-Dry, Warm-Normal) mainly occur West (e.g. Southwest China). cold-associated (Cold-Humid, Cold-Dry, Cold-Normal) dominate at high latitudes altitudes Northeast Tibetan Plateau). changed cold warm last half-century, accompanying transformation Cold-Humid, Cold-Normal before early 1990s Warm-Humid, Warm-Normal onward. 21st century, are Warm-Humid dominates China, North Warm-Dry is Yellow River Valley South High-frequency Valley. increase whereas decrease 2015 2099. All three exhibit larger trends stronger versus weaker RCPs (RCP8.5 > RCP4.5 > RCP2.6). Compared with alone, provide complete on change accurately characterize regional