Question Q.15GS1GS1
The tropical Indian Ocean is likely to be in a near-permanent heatwave state. Discuss the factors responsible for the rapid warming of the Indian Ocean along with its multi-dimensional impacts.
Introduction
According to IMO, Indian Ocean has warmed 0.7+°C on average from pre-industrial times.
13 words
Main Body
Factors responsible for rapid warming
1Global warming due to climate change, ocean aerosols more than 3 offed 4*4 emission.
2Changed deep ocean circulation, leading to reduced flow of cold water.
3Warming during Positive Indian Ocean Dipole.
4Effect of El-Niño southern Oscillation.
5Decreased river waterflow due to human use → damming & diversion.
6Closed nature of ocean leads to less water circulation.
7Higher contact with land mass relative to other ocean, conducive heating.
Multi-Dimensional Impact
1Sea level rise intercalification → highly temp leads to thermal expansion of water.
2Distinct fish leading to threat to fisherman livelihood threat.
3Bleaching of coral reefs → 90% projected to disappear by 2070.
4Heatwave in coastal towns → houses 1/5th of population.
5Increased in marine & tropical cyclone (eg) more cyclone in arabian sea backs in recent years.
6Effect on Indian monsoon → more erratic and unpredictable.
Hence warming not only threat to nature but humane policy, used for global climate ocean inline with Paris Agreement.
173 words3 paragraphs
Conclusion
Hence warming not only threat to nature but humane policy, used for global climate ocean inline with Paris Agreement.
19 words
- Includes quantitative data (0.7+°C warming)
- Identifies multiple factors contributing to warming
- Recognizes role of ocean circulation patterns
- Mentions both local and global phenomena
Topper
Neeraj Trar
AIR 180
Subject & Paper
GS1GS1
Topic
Salient features of World's Physical Geography
Important Geophysical Phenomena
Indian Ocean warming and heatwave conditions
Writing Stats
205
Total words
3
Paragraphs
analytical, systematic
Tone