장마전선 refers to the seasonal rain front that occurs in East Asia, particularly in Korea and Japan. It typically forms in late spring and lasts until early summer, bringing heavy rainfall and high humidity. This weather phenomenon is caused by the meeting of warm, moist air from the south and cooler air from the north. The 장마전선 plays a crucial role in the region's climate, as it provides much-needed water for agriculture. However, it can also lead to severe weather events, such as flooding and landslides, impacting communities and infrastructure. Understanding this weather pattern is essential for effective disaster preparedness.