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The factors that determine tropical cyclone activity are relatively well understood: warmer sea levels are favourable to tropical cyclones, as well as an unstable and moist mid-troposphere, while vertical wind shear suppresses them. All of these factors will change under climate change, but is not always clear which factor dominates. [17]
A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
A study from 2022 concluded: "Clearly the existence of a future tipping threshold for the WAM (West African Monsoon) and Sahel remains uncertain as does its sign but given multiple past abrupt shifts, known weaknesses in current models, and huge regional impacts but modest global climate feedback, we retain the Sahel/WAM as a potential regional ...
Almost whole North Africa is semi-arid, arid or hyper-arid, containing the Sahara Desert which is the largest hot desert in the world, while central Africa (known as Sub-Saharan Africa) sees an annual rainy season regulated by the movement of the Intertropical Convergence Zone or monsoon trough, though the Sahel Belt located at the south of the ...
The major monsoon systems of the world consist of the West African, Asian–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area.
Of the 197 hurricanes classified as Category 5 from 1980 to 2021, five fit the description of a hypothetical Category 6 hurricane: Typhoon Haiyan in 2013, Hurricane Patricia in 2015, Typhoon ...
The African humid period was caused by a stronger West African Monsoon [125] directed by changes in solar irradiance and in albedo feedbacks. [17] These led to increased moisture import from both the equatorial Atlantic into West Africa, as well as from the North Atlantic and the Mediterranean Sea towards the Mediterranean coasts of Africa. [126]
Milton, which comes just after the recent catastrophic Hurricane Helene, has strengthened to a Category 4 storm as it approaches Florida’s Gulf Coast and is expected to make landfall late Wednesday.