大西洋多年代际变化的研究进展
秦旻华, 戴爱国, 张人禾

A Review of the Atlantic Multidecadal Variability
Minhua QIN, Aiguo DAI, Renhe ZHANG
图1 18702018年大西洋多年代际变化时空特征
(a)观测中1870—2018年AMV指数的变化(阴影线,°C):AMV的定义参考Trenberth等24的方法;灰色线表示只包含内部变率引起的北大西洋年代际振荡(AMO),计算方法见参考文献[25],异常参考时段为1870—2018年。(b)大西洋区域海温与AMV指数的回归系数空间分布(℃/℃)
Fig. 1 Spatial and temporal characteristics of the AMV from 1870 to 2018
(a) Time series of the AMV index (shading, unit: °C, relative to the mean of 1870-2018) for the observations from 1870 to 2018. The AMV was defined following Trenberth et al24. The gray line represents the Atlantic Multidecadal Oscillation (AMO), which refers to the internal component of AMV following the definition by reference [25]. (b) The pattern of the AMV obtained by regressing Sea Surface Temperature (SST) anomalies from 1870 to 2018 from observational data set onto the AMV index (unit:°C/℃)