ऐसा कहा जाता है कि मानव प्रेरित तापन के कारण विश्व के महासागर अपनी स्मृति को खो रही हैं। टिप्पणी कीजिए। (उत्तर 150 शब्दों में संक्षिप्त) It is said that the world's oceans are losing their 'memory' due to human-induced warming. Comment. Also, discuss the consequences of the phenomenon. (Answer in 150 words)

Loss of memory (concept):

i- The oceanic currents are weakening in terms of their direction and speed, eg Atlantic Meridional Oceanic Currents (AMOC)

ii- Reduction in upwelling eg Peruvian coast; Increase in upwelling in Indian Ocean eg (loss of corals)

iii- Due to rise in sea surface temperature, the waves are intensified

Consequences:

iv- Rise in compound extreme events eg Marine Heat Wave & cyclonic conditions = Supercyclone Amphan in Bay of Bengal

v- Loss of fishing grounds eg at the confluence of Kuroshio & Oyashio currents in Japan due to weakening

vi- Rise in the gasoline of the oceans is killing biodiversity eg corals

To prevent irreversible damage there is a need for:

Short term measures: Reduce plastic pollution, Reduce emissions by marine industry

Long-term means: Adhere to COP26 targets, Global collaboration

Consequences (continued):

iv- Rise in compound extreme events eg Marine Heat Wave & cyclonic conditions = Supercyclone Amphan in Bay of Bengal

v- Loss of fishing grounds eg at the confluence of Kuroshio & Oyashio currents in Japan due to weakening

vi- Rise in the gasoline of the oceans is killing biodiversity eg corals

Prevention measures:

Short term: Reduce plastic pollution, Reduce emissions by marine industry

Long-term: Adhere to COP26 targets, Global collaboration