GS 1 · 2014Physical Geography10 Marks

Q10.Most of the unusual climatic happenings are explained as an outcome of the El-Nino effect. Do you agree?

Directive: Examine10 marks

Introduction

El-Nino refers to the significant warming of the central and eastern tropical Pacific Ocean, profoundly impacting global weather patterns through atmospheric teleconnections.

Body

El-Nino's Significant Influence

It is indeed linked to numerous unusual climatic events worldwide, including droughts in India and Australia, severe floods in Peru and the US, widespread heatwaves, and altered storm tracks, demonstrating its powerful influence.

Beyond El-Nino: Other Drivers
  • La Niña (cooling phase)
  • Indian Ocean Dipole (IOD)
  • Arctic Oscillation (AO)
  • North Atlantic Oscillation (NAO)

Anthropogenic climate change is an overarching factor, intensifying and altering the frequency and magnitude of extreme events, often independent of or in conjunction with El-Nino. Many regional happenings are also influenced by local factors like Western Disturbances or complex interactions.

Conclusion

While El-Nino is a powerful and well-documented driver of climatic anomalies, attributing 'most' unusual happenings solely to it oversimplifies a complex, multi-causal global climate system.

142 words · target ~150