In meteorology, a cyclone (/ ˈ s aɪ. k l oʊ n /) is a large air mass that rotates around a strong center of low atmospheric pressure, counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere as viewed from above (opposite to an anticyclone).

A tropical cyclone is a rapidly rotating storm system with a low-pressure area, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls.

2025年3月18日 · Tropical cyclones (TCs) bring about extreme winds, rain, and storm surge to coastal locations, and are responsible for billions of dollars of damage per year 1. Research has shown that TC...

2025年1月3日 · Tropical cyclones are intense low-pressure systems that form over warm ocean waters which can produce strong winds, heavy rainfall and storm surges. Together with the possible ensuing flooding...

2023年9月27日 · Tropical cyclones (TCs) are one of the most devastating natural disasters in the world. Understanding potential changes in TC activity in response to global warming is important for...

2016年6月20日 · 气旋着陆后，由于陆地表面比海洋更粗糙，风速会因摩擦变慢，并导致接近海岸的气旋象限（cyclone quadrant）出现强烈的收敛。 这使得气流上升更为剧烈，加速水分凝结，从而增加降水。 一般而言，着陆后风眼墙会很快减弱。 然而，气旋的外围降水带对这种转变却更为耐受，通常会侵入内陆地区，带来暴雨。 图3.2005年8月，飓风“卡特里娜”过后，新奥尔良洪水泛滥。 飓风的风速位居全球前列。 在风眼墙下，其风速通常超过200 km/h，甚至可以达到350 …

2025年4月2日 · Tropical cyclones are also called hurricanes or typhoons, depending on the region. A tropical cyclone is a rapidly rotating storm that begins over tropical oceans, and they can vary in speed, size, and intensity. Tropical cyclones are the second-most dangerous natural hazards, after earthquakes.

4 天之前 · Tropical cyclones are one of the biggest threats to life and property. As defined by the World Meteorological Organization (WMO), a tropical cyclone is a rotating storm originating over a tropical ocean basin that has a low pressure center (the eye). The diameter of a tropical cyclone is typically 124 to 311 miles (200 to 500 km), but can be as ...

A tropical cyclone is a warm-core low pressure system, without any front attached, that develops over the tropical or subtropical waters and has an organized circulation. These include hurricanes and typhoons. There are several favorable environmental conditions that must be in place before a tropical cyclone can form. They are:

2025年2月17日 · Tropical cyclones are a regularly occurring natural phenomena threatening life and property in certain regions of the world.