Traditional Culture Encyclopedia - Weather inquiry - High school geography. What's the weather like in the ridge and trough? What are the reasons for these weather conditions? Help, please!

High school geography. What's the weather like in the ridge and trough? What are the reasons for these weather conditions? Help, please!

It's sunny near the ridge line

There is rainy weather near the trough line

The airflow on both sides of the ridge line is scattered (from the ridge line to both sides), and the cold and warm airflow will not meet, and the air pressure is relatively high, so it is difficult to form precipitation.

The airflow on both sides of the trough line meets (from both sides to the trough line), and the cold and warm airflow meets to form a front, resulting in precipitation.