The study looked at how differences in temperature between land and sea affect monsoon troughs and rainfall in Asia and Australia. By analyzing weather data, researchers found five monsoon troughs near the Tibetan Plateau during the strongest part of the Asian monsoon, and three troughs near Australia during the peak of the Australian monsoon. Rainfall in South Asia and Southeast Asia lasts for about half a year, while in other parts of Asia and Australia, it is shorter. Before the Asian monsoon starts, there is some rainfall, and the north of Australia also experiences interim precipitation.