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Indian Satellite Spots Godzilla El Niño's Early Signs
12 Sep
Summary
- ISRO's Oceansat-3 satellite monitors biological and atmospheric changes.
- Chlorophyll-a decline signals El Niño's early, potent development.
- El Niño's intensification poses risks to global weather and India's monsoon.
An Indian satellite, ISRO's EOS-06 (Oceansat-3), is providing crucial early detection of a potentially powerful El Niño event. Launched on November 22, 2022, this satellite monitors subtle biological and atmospheric changes in the equatorial Pacific. Scientists are observing a sharp decline in chlorophyll-a, a pigment essential for phytoplankton, indicating reduced marine productivity. This biological signal offers an earlier warning than traditional sea surface temperature monitoring.
EOS-06 also detects a reversal of ocean surface winds, a classic El Niño indicator. These combined observations from the Ocean Colour Monitor and Scatterometer instruments act as a vital early warning system. El Niño, the warm phase of ENSO, weakens trade winds, leading to warmer eastward-spreading waters and impacting global weather patterns. For India, El Niño has historically been linked to weaker monsoon rainfall, raising concerns for agriculture and water resources.
The World Meteorological Organization corroborates these findings, warning of a very strong El Niño potentially persisting into early 2027, with implications for extreme weather and higher global temperatures. ISRO's satellite provides a unique vantage point, observing both biological and physical indicators from space, offering an unprecedented real-time glimpse into the evolution of this consequential climate phenomenon.
