Cyclone Arnab

About Cyclones

• Cyclones are a fast inward air movement around a low-pressure area.
• In the Northern Hemisphere, the air circulates anticlockwise, while in the Southern Hemisphere, it moves clockwise.
• Cyclones are typically associated with intense storms and severe weather.
• There are two types of cyclones:
  • Tropical cyclones-These form over warm ocean waters in tropical and subtropical regions.
    • They are characterized by low pressure, high winds, and heavy rain.
  • Extra Tropical cyclones- They are also known as wave cyclones, mid-latitude cyclones, or temperate cyclones.
    
    • They develop in the mid and high latitudes, outside the tropics.
    • They are less intense than tropical cyclones.

About Cyclone Arnab

• Cyclone Arnab:It was a tropical cyclone that formed over the North Indian Ocean.
  • It was classified as a severe cyclonic storm.
  • It made landfall between Kakinada (Andhra Pradesh) and Yanam (Puducherry) before weakening.
• Origin of the Name “Arnab”
  • Proposed by: Bangladesh proposed the name Arnab for tropical cyclones in the North Indian Ocean.
  • Meaning: Arnab is associated with the Bengali word for “ocean” or “sea” and is pronounced “Ornob”.

Cyclone Naming Process

• Coordinating Bodies: The World Meteorological Organisation (WMO) and the United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) coordinate the naming system.
• Participating Countries: 13 countries (Bangladesh, India, Iran, the Maldives, Myanmar, Oman, Pakistan, Qatar, Saudi Arabia, Sri Lanka, Thailand, the United Arab Emirates and Yemen) contributed names to the list adopted in 2020.
• Total Names: Each country contributed 13 names, making a total of 169 names.
• Naming Sequence: Names are used in a pre-decided sequence for tropical cyclones forming over the North Indian Ocean, including the Bay of Bengal and the Arabian Sea.
• Naming Guidelines:
  • Neutrality: Names must remain neutral towards politics, political figures, religious beliefs, cultures and gender.
    • They must not hurt the sentiments of any group.
  • Language and Length: Names must be short, easy to pronounce, non-offensive and not rude or cruel.
    • They must contain a maximum of eight letters.
  • Non-Repetition: A cyclone name cannot be reused once it has been used.

Cyclones in the Arabian Sea vs. Bay of Bengal

• Cyclones occur less frequently in the Arabian Sea than in the Bay of Bengal, mainly due to variations in sea surface temperature, wind patterns, and geographical conditions.
• The Bay of Bengal has more favorable conditions for cyclone formation, such as warm waters and low vertical wind shear.