2016年春季,全国平均气温11.6℃,为1961年以来历史同期第二高值,仅次于2008年(11.8℃);全国平均降水量174.9 mm,较常年同期偏多21.7%,为1951年以来同期第三高值,仅次于1952年(187.1 mm)及1973年(179.1 mm)。季内主要发生极端日降温及极端日降水量事件。进一步分析发现,受欧亚大陆中高纬地区“+-+”斜压波列影响,我国西北地区受高空槽控制,而东北地区则处于低层辐合、高空辐散的形势,利于上述地区降水偏多。此外,受到厄尔尼诺影响,印度洋—西太平洋地区盛行反气旋异常环流,将大量水汽输送到我国南方地区,有利于南方地区降水偏多。
In the spring of 2016,the mean temperature of China was above normal,being the second high-est in the historical record.The average precipitation amount was also above normal,recorded as the third highest in history.With the influence of the “positive-negative-positive”baroclinic wavetrain in the mid-high latitude of Euro-Asia Continent,the northwest of China was controlled by the upper trough,while the northeast was dominated by the circulation of low-level convergence and high-level divergence,which is in favor of more precipitation in these two regions.Moreover,under the influence of El Ni~no,the anticy-clone anomalous circulation prevailed in the Indian-West Pacific Ocean,bringing plenty of water vapor to the Southern China,and leading to more precipitation there.