Monopole blocking governed by a modified KdV type equation

TL;DR

This paper derives a coupled variable coefficient modified KdV system from a two-layer fluid model to analytically describe the evolution of atmospheric monopole blocking events, matching real-world observations.

Contribution

It introduces a novel analytical solution for a coupled modified KdV system that models atmospheric monopole blocking phenomena.

Findings

The analytical solution captures the lifecycle of a real monopole blocking event.

The model links large-scale weather anomalies with monopole blocking dynamics.

The solution provides insights into the formation and collapse of atmospheric blocking.

Abstract

A type of coupled variable coefficient modified Korteweg-de Vries system is derived from a two-layered fluid system. It is known that the formation, maintenance, and collapse of an atmospheric blocking are always related with large-scale weather or shorts term climate anomalies. One special analytical solution of the obtained system successfully features the evolution cycle of an atmospheric monopole type blocking event. In particular, our theoretical results captures a real monopole type blocking case happened during 19 Feb 2008 to 26 Feb 2008 can be well described by our analytical solution.