Spatio-Temporal Cross-Covariance Functions under the Lagrangian Framework with Multiple Advections
多重平流拉格朗日框架下的时空交叉协方差函数
When analyzing the spatio-temporal dependence in most environmental and earth sciences variables such as pollutant concentrations at different levels of the atmosphere, a special property is observed: the covariances and cross-covariances are stronger in certain directions. This property is attributed to the presence of natural forces, such as wind, which cause the transport and dispersion of these variables. This spatio-temporal dynamics prompted the use of the Lagrangian…