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The Monsoon System Essay

1212 words - 5 pages

In this essay, I would like to explain the monsoon system in East Asia and account for the influence of this monsoon system on seasonal conditions of Hong Kong.The monsoon system in East Asian is a system which winds blow in opposite directions at different seasons. They develop due to the seasonal variations in air pressure. The monsoonal flow carries moist air from South Asia to East Asia. It affects approximately one-third of the global population, and the countries of China, Japan, North Korea, and South Korea. It is driven by temperature differences between the Asian continent and the Pacific Ocean.In most years, the monsoonal flow shifts in a very predictable pattern, bending northward in late June to water the Korean peninsula and Japan. This leads to a reliable precipitation spike in July and August. However, this pattern occasionally fails, leading to drought and crop failure. In the winter, the monsoonal precipitation bands move back to the south, watering southern China and Taiwan. The East Asian monsoon is known as Changma in Korea, and as baiu in Japan, and Meiyu in China. There has been some speculation that climate change will disrupt or change the monsoonal pattern.From the above, we can conclude that the difference in air pressure causes wind to blow our from the Pacific Ocean and northern Australia to the interior of East Asia. This explains the occurrence of a regional wind system are based on the changes of the planetary wind system, in which is inter-related to the variation of intense pressure centres develop in the interiors of continents and oceans in different seasons.By understanding how the monsoon system in East Asia works, I would illustrate on how this monsoon system influence the seasonal climatic conditions of Hong Kong.Hong Kong has a subtropical climate with four seasons, and the general climate condition is influenced by the two dominant monsoons: the north-northeast monsoon from the period in between October to March and the south-southwest monsoon from late April to September.Firstly, I would describe the climatic condition in summer and account for the influence of the dominating monsoon that leads to the respective climatic condition. As summer approaches, as the overhead sun moves northwards, trade winds and the equatorial low pressure belt, as a result, will be brought northwards. The south-east trade winds from the Southern Hemisphere shifts northwards and cross the Equator to the Northern Hemisphere. The trade winds are then deflected to their right of their path into south-west trade winds by the Coriolis Force. As the continental interior is being heated up more quickly, low pressure dominates and draws air from the Pacific Ocean and this results in the formation of the south-east summer monsoon. Generally speaking, the summer south-east monsoon brings us a hot and wet climate, with the relative humidity and temperatures being the highest of the year. Next, heavy rain is another feature associated with...

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