The horizontaladvection term contribute little to the frontogenesis and frontolysis.
水平温度梯度的平流对锋生（消）的影响都很小。
2
Positive vorticity accumulated by horizontaladvection was balanced with negative vorticity made by divergence term in vorticity balance.
涡度平衡中主要是水平平流累积的正涡度与散度项制造的负涡度相平衡。
3
The operator-splitting scheme is used to solve the governing equations: using the Eulerian-Lagrangian method for solving the horizontaladvection terms;