अरब सागर में चक्रवातीय गतिविधि में वृद्धि के लिए उत्तरदायी कारकों पर चर्चा कीजिए। (उत्तर 150 शब्दों में दीजिए) / Discuss the factors responsible for increased cyclonic activity in the Arabian Sea. (Answer in 150 words)
Introduction
According to IMD, since 1950, the frequency of total cyclones in Indian in Arabian Sea has increased to 35-40%.
19 words
Main Body
Factors responsible:
1. Increased SST Rise - sea-surface temperature due to global warming, 1.1°C since 1900s; [illegible] maritime heatwaves (cumulus); cyclone bipolarity stayed for (17 days); provides moisture for long days
2. Increased temperature - more evaporation; more instigation
Factors continued:
3. More ionization
4. More ionization in Arabian - more cyclones
5. Western disturbances - are seducing - leading to more cyclones
6. Increasing stratification - less mixing of layers of sea
7. Influence of lead rivers flowing in Arabian Sea, i.e. Bay of Bengal - lack of cold warming
Results:
Conclusion
Thus, the SST of Arabian Sea needs to be monitored for better assessment of cyclone EWS.
16 words
Diagram
Graph showing increase in cyclones from 1950s to 2020s, ranging from approximately 25-40%
- Uses IMD data
- Quantifies the increase (35-40%)
- Includes specific temperature rise figure (1.1°C)
- Discusses mechanism of cyclone formation
Kiran Kamate
Important Geophysical Phenomena
Cyclones and tropical storms
Increased cyclonic activity in Arabian Sea
145
Total words
2
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