Topics Covered: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location- changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.
IMD releases new list of cyclone names
What to study?
For Prelims: A brief overview of recent cyclones and their origins.
For Mains: Classification and naming of cyclones.
Context: The India Meteorological Department (IMD) has released a new list of names of tropical cyclones over north Indian Ocean including Bay of Bengal and Arabian Sea.
The new list comprises of 169 names including 13 from India such as Gati, Tej, Aag, Neer, Vyom, Jhar, Jaladhi, Murasu, Probaho, Prabhanjan, Ghumi, Ambud and Vega. The new list starts with Nisarga (shared by Bangladesh), Gati (India), Nivar (Iran).
Any tropical cyclone that hits the region is known by a name given in the list. Since the earlier list of 2004 is left with only one name – Amphan (shared by Thailand), the IMD being one of the six RSMCs in the world to provide tropical cyclone and storm surge advisories finalised the new list of 169 names.
Why name cyclones?
Naming of tropical cyclones (TCs) helps scientific community, disaster managers, media and general masses to identify each individual cyclone; create awareness of its development; remove confusion in case of simultaneous occurrence of TCs over a region; remember a TC easily and rapidly and effectively disseminate warnings to much wider audience.
How are cyclones named?
Each Tropical Cyclone basin in the world has its own rotating list of names. For cyclones in the Bay of Bengal and Arabian Sea, the naming system was agreed by eight member countries of a group called WMO/ESCAP and took effect in 2004.
Facts for prelims:
Cyclones are given many names in different regions of the world – They are known as typhoons in the China Sea and Pacific Ocean; hurricanes in the West Indian islands in the Caribbean Sea and Atlantic Ocean; tornados in the Guinea lands of West Africa and southern USA.; willy-willies in north-western Australia and tropical cyclones in the Indian Ocean.
- List of names given by India.
- What is a cyclone called in different regions?
- Favourable conditions for a cyclone to occur?
- How its intensity varies on land?
- Why eastern coast cyclones are more intense?