How to distinguish an anticyclone from a warm front in geography?

① From the weather process: the anticyclone transits, the weather is clear, the wind force has no obvious change, the air pressure rises, and there are no weather changes such as cloudy, cloudy and rainy. When the warm front crosses the border, the wind will increase, and there will be cloudy, cloudy and rainy weather, and the air temperature will rise in the process.

② In principle, anticyclone is a near-surface high-pressure system formed by air sinking. Warm front is the interface where cold air mass and warm air mass meet. Because the warm air mass moves to the cold air mass actively, the warm air mass climbs along the cold air mass to make rain, and the cold air mass is forced to retreat.

③ From the isobar diagram, the anticyclone shows a closed isobar with central high pressure, while the warm front shows an open parallel bending isobar with different densities.