In the sweltering heat, I came across a woman working in the field alone. I went closer and introduced myself, and saw that Shakuntala Devi was sowing seeds. I offered her a bottle of water and was curious to know a field-working woman’s thoughts on the changing climate.

I asked her if her agricultural practices had changed, to which she replied that she had been sowing seeds earlier than usual because patterns of rain and heat had changed, and that her crop yield had been decreasing over the years. I was curious to know why she thinks the patterns have changed, and she looked at the sky and said, “Yeh toh kudhrat ka hi khel hai, wahi samjhe!” (It is God’s play, he only understands!). 

Shakuntala Devi banks on her individual resilience to adapt to the changing climate for her livelihood, but as a society, aren’t we testing these limits?

Rising Heat in the Anthropocene Era

While there are both natural and man-made drivers of climate change, especially concerning heat, there are reasons to believe that man-made drivers currently predominate.

The Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment report has unequivocally made it clear that the rise in surface temperatures is due to heat-trapping Greenhouse Gas (GHG) emissions from human activities rather than natural processes. The global mean surface air temperature (GSAT) in 2010–2019 relative to 1850–1900 is 0.8°C–1.3°C warmer with the best estimate of human-induced global warming of a rise of 1.07 degrees Celsius with GHGs being the main driver.

These man-made drivers interact cumulatively with the natural drivers such as the El Niño Southern Oscillation (ENSO)  to create a catastrophic heat crisis for the Earth.

The El Niño Southern Oscillation (ENSO) has three states: the neutral ENSO state and the two extremes. It is one of the climate phenomena that describes the interaction between the water in the Pacific Ocean and the atmosphere, which is measured in terms of sea surface temperature and atmospheric pressure, which impacts temperature and precipitation around the globe. 

The neutral phase maintains near-stable sea surface temperatures close to the long-term average, lasting for years unless pushed to extreme phases- El Niño (warm phase) and La Niña (cool phase) that typically last 9-12 months. In the last several decades, the world has been seeing longer extreme phases of ENSO that have led to catastrophic weather events around the globe. 

But since the beginning of the anthropocene epoch - the geological period of human impact on Earth there has been “a very rapid human-driven trajectory of the Earth System away from the glacial-interglacial limit cycle toward new, hotter climatic conditions and a profoundly different biosphere.”