Super El Niño and Ecosystem Monitoring
CONTEXT
- Forecasts suggested the possibility of a strong to very strong El Niño continuing into spring 2027 following a deficient Indian monsoon.
- Scientists have emphasised the need for an ecosystem wide monitoring network, as climate related stress can differ across forests, wetlands, agricultural areas, glaciers and coral reefs.
KEY HIGHLIGHTS
- El Niño refers to the abnormal warming of the central and eastern equatorial Pacific Ocean, which can weaken the Indian monsoon circulation.
- India experienced a 12.6% deficit in southwest monsoon rainfall, raising concerns over water availability and stress during the rabi season.
- Factors such as local soil moisture, vegetation conditions, groundwater availability and human pressure influence whether a rainfall deficit pushes an ecosystem beyond its ecological threshold.
- Satellite observations should be complemented with real time glacial lake sensors, coral bleaching assessments, fire risk monitoring and field based observations.
- The article highlighted the 1998 El Niño, during which 80 to 90% of live coral was reportedly lost across several studied reefs of Lakshadweep.
KEY CONCEPTS
- Teleconnection: A climatic relationship in which conditions in one distant region influence atmospheric or climatic patterns elsewhere, such as the connection between Pacific Ocean warming and the Indian monsoon.
- Ecological threshold: A critical point beyond which even a relatively small additional stress can trigger a rapid or significant change in an ecosystem.
WAY FORWARD
- India should develop a common national monitoring platform connecting the IMD with research institutions, State governments, universities and citizen science initiatives.
- Disaster preparedness should be strengthened by pre positioning responses for droughts, forest fires, fisheries stress and drinking water shortages, using locally relevant environmental indicators.