Question 5GS1GS1
Discuss the factors responsible for increased cyclonic activity in the Arabian Sea. (Answer in 150 words)
Main Body
Cyclones refers to a vortex of fast moving winds circulating around a low pressure zone 'eye'
Conditions necessary:
1High sea surface temperature
2Low vertical wind shear
3Coriolis force
Traditionally made cyclonic activity is witnessed in Bay of Bengal vis-à-vis Arabian sea
Factors leading to high cyclonic activity in Arabian sea:
1Marine heatwaves - rise in mean sea surface temperature by 1.1°C (IPCC ARS report)
2ENSO events - El Niño 2023 led to a sharp rise in sea surface temperature in Indian ocean, particularly Arabian sea
3Climate change - Global warming induced rise in atmospheric temperature leading to feedback loops (eg 2024 was hottest year on record)
4Glacial melt - drastic Amplification impacting cyclogenesis in Arabian sea (IITM report)
5Disruption in jet streams & ocean currents - due to changes in global heat budget
2ENSO events - El Niño 2023 led to a sharp rise in sea surface temperature in Indian ocean, particularly Arabian sea
3Climate change - Global warming induced rise in atmospheric temperature leading to feedback loops (eg 2024 was hottest year on record)
4Glacial melt - drastic Amplification impacting cyclogenesis in Arabian sea (IITM report)
5Disruption in jet streams & ocean currents - due to changes in global heat budget
Way forward:
NDMA cyclone mitigation strategy
Install early warning systems
structural measures - sea walls, mangroves
Ultimate mitigation & adaptation
238 words13 paragraphs4 bullet points
Diagram
A cyclone diagram showing the 'eye' at center with wind circulation patterns, labeled with pressure zones
- Clear definition and explanation of cyclones
- Comprehensive listing of necessary conditions
- Multiple factors identified with recent data
- Reference to scientific reports and current events
- Well-organized structure
- Technical terminology used correctly
- Provides mitigation strategies
- Mentions structural and non-structural measures
- References relevant government bodies
Topper
Saurabh Sharma
AIR 146
Subject & Paper
GS1GS1
Topic
Important Geophysical Phenomena
Cyclones and tropical storms
Arabian Sea cyclonic activity
Writing Stats
238
Total words
13
Paragraphs
4
Bullets
Technical and scientific
Tone