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0n the middle and lower reaches of the Yangtze River in China, the arrival of summer always comes with a climatic feast—the Plum Rain Season. This name is not only full of poetry but also carries the mystery of nature's operation and the wisdom of people adapting to the environment. 🌤️🌱 This article will take you in-depth to understand the causes, characteristics, distribution patterns of the Plum Rain Season, and how we cleverly deal with the challenges of this season.
🔍 Cause Exploration: The Encounter of Cold and Warm Air
The formation of the Plum Rain Season is a unique phenomenon in the subtropical monsoon climate area. From May to June each year, when the cold air from the north meets the warm and humid air from the south in the middle and lower reaches of the Yangtze River, it forms the Jianghuai quasi-stationary front, also known as the Meiyu front. 🌬️🌊 This front causes the warm and humid air to confront the cold air repeatedly, unable to advance quickly, leading to continuous rainy weather. The climatic characteristics of this period coincide with the ripening season of plums in Jiangnan, hence the name "Plum Rain."
🌧️ Feature Overview: The Art of Dampness and Mildew
The biggest feature of the Plum Rain Season is the continuous rain and high humidity. The sky often hangs a layer of gray rain curtain, the air humidity is close to saturation, objects are prone to mildew, hence also known as "mildew rain." 😖 Although the temperature is not too high, due to the high humidity, people often feel stuffy and uncomfortable.
📍 Distribution Pattern: Exclusive to Specific Regions
The Plum Rain Season mainly appears in the middle and lower reaches of the Yangtze River in China, including Jiangsu, Anhui, Zhejiang, Shanghai, and other places, as well as the southernmost part of the Korean Peninsula and the central and southern parts of Japan. 🌍 The terrain of this area, the interaction of marine air flow and continental air flow, has formed a unique Meiyu weather pattern. Other regions at the same latitude, such as the east coast of the United States, do not have such continuous rainy weather in summer due to different atmospheric circulation.
