Cyclone Michaung

 

Cyclone Michaung

Why in News:



The India Meteorological Department (IMD) has issued an “orange” alert for Tamil Nadu and coastal and interior Andhra Pradesh due to the potential landfall of cyclone Michaung.

About Cyclone Michaung

·       Uncommon Intensity: December cyclones in the North Indian Ocean typically do not reach high intensities. Michaung, with its severe storm classification, is an exception.

·       Upgraded Intensity: Initially predicted as a tropical cyclone, IMD upgraded Michaung to a ‘severe’ storm due to its unexpected intensification.

·       Heat Index Contribution: The intensification is attributed to the above-normal heat index values off the southern Andhra Pradesh coast.

Cyclone:

·       It is a large-scale system of air that rotates around the centre of a low-pressure area.

·       It is usually accompanied by violent storms and bad weather.

·       As per the National Disaster Management Authority (NDMA)-

·       A cyclone is characterised by inward spiralling winds that rotate anticlockwise in the northern hemisphere and clockwise in the southern hemisphere.

·       It classifies cyclones broadly into two categories: tropical cyclones and extratropical cyclones.

Tropical cyclones:

·       These develop in the regions between the Tropics of Capricorn and Cancer.

·       They are the most devastating storms on Earth.

·       According to the US National Oceanic and Atmospheric Administration (NOAA)-

·       Such cyclones develop when thunderstorm activity starts building close to the centre of circulation, and the strongest winds and rain are no longer in a band far from the centre.

·       The storm's core turns warm, and the cyclone gets most of its energy from the “latent heat” released when water vapour that has evaporated from warm ocean waters condenses into liquid water.

·       Warm fronts or cold fronts are not associated with tropical cyclones.

·       Tropical cyclones have different names depending on their location and strength.

·       For instance, they are known as hurricanes in the Caribbean Sea, the Gulf of Mexico, the North Atlantic Ocean and the eastern and central North Pacific Ocean. In the western North Pacific, they are called typhoons.

·       The conditions favourable for the formation and intensification of tropical storms are -

·       Large sea surface with a temperature higher than 27° C.

·       Presence of the Coriolis force.

·       Small variations in the vertical wind speed.

·       A pre-existing weak low-pressure area or low-level-cyclonic circulation.

·       Upper divergence above the sea level system.

Extratropical cyclones:

·       Also known as mid-latitude cyclones, extratropical cyclones occur outside the tropics, i.e., beyond the areas that fall under the Tropic of Cancer and the Tropic of Capricorn.

·       According to the US National Oceanic and Atmospheric Administration (NOAA)-

·       They have cold air at their core and derive energy from releasing potential energy when cold and warm air masses interact.

·       Such cyclones always have one or more fronts connected to them.

·       A front is a weather system that is the boundary between two kinds of air masses, where one front is represented by warm air and the other by cold air.

·       Such cyclones can occur over land and ocean


Comments

Post a Comment

Popular posts from this blog

Quantum Nonlocality

Image
  Quantum Nonlocality: §   While classical physics assumes locality, the principle of nonlocality is a feature of many interpretations of quantum mechanics. §   Nonlocality describes the apparent ability of objects to instantaneously know about each other’s state, even when separated by large distances (potentially even billions of light years), almost as if the universe at large instantaneously arranges its particles in anticipation of future events. §   This is in direct contravention of the "principle of locality" (or what Einstein called the "principle of local action"), the idea that distant objects cannot have direct influence on one another, and that an object is directly influenced only by its immediate surroundings, an idea on which almost all of physics is predicated. §   Non locality occurs due to the phenomenon of entanglement, whereby particles that interact with each other become permanently correlated, or dependent on each other’s states a...
Read more

UPSC CSE 2025- Mains Results Declared

UPSC CSE 2025- Mains Results Declared The Union Public Service Commission (UPSC) has declared the results of the UPSC Civil Services Examination (CSE) Mains 2024 on December 9, 2024. Candidates who appeared for the CSE Mains exam can check their results on the official website, upsc.gov.in.                                                   UPSC CSE 2025- Mains Results Declared
Read more

MISSION KARMAYOGI

Image
  MISSION KARMAYOGI Why in the news? §   Recently, Capacity Building Commission (CBC), launched in 2021, as part of National Programme for Civil Services Capacity Building (NPCSCB) - Mission Karmayogi has completed three years. Context §   Recently, Indian Institute of Public Administration assessed the impact by seeking inputs on trained staff and reported increased proficiency in data analytics and e-governance tools under Mission Karmayogi. Mission Karmayogi §   India’s ambitious vision of becoming a global manufacturing hub, a critical exporter of value-added services, and a mass supplier of human skills to an ageing developed world by 2047 hinges on efficient governance and competent civil services. §   Recognising this, the Prime Minister of India launched Mission Karmayogi, the National Programme for Civil Services Capacity Building to transform India’s three million civil servants into citizen-centric, future-ready, and result-oriented ‘K...
Read more