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How an “Accidental” Scientist Uncovered a Hidden Force Driving Global Warming
In the early 1970s, a young postdoctoral researcher at NASA Langley Research Center was tinkering with calculations at night in his spare time. What began as a curiosity sparked a scientific revelation — one that would reshape our understanding of the Earth’s climate system and reveal overlooked drivers of global warming. That scientist Veerabhadran Ramanathan has just been awarded the prestigious Crafoord Prize in Geosciences for his decades-long contributions to climate science. (keyt.com)
A Chance Path to Climate Science
Born in Madurai and raised in Chennai, India, Ramanathan’s journey to climate science was far from straightforward. After studying engineering in India, he began his career ensuring that refrigeration systems didn’t leak chlorofluorocarbons (CFCs) — the cooling agents that were then ubiquitous in refrigerators and spray cans. (ndtv.com)
At 26, Ramanathan moved to the United States for graduate school. His doctoral work unexpectedly shifted focus to studying atmospheric processes on Venus. Later, as a postdoctoral fellow at NASA, he encountered research on CFCs’ impacts on stratospheric ozone by Mario Molina and F. Sherwood Rowland — a discovery that would earn them the Nobel Prize in Chemistry in 1995. (keyt.com)
It was during this period that Ramanathan, wrestling with his own curiosity about atmospheric radiation, calculated how much heat CFCs could trap in Earth’s atmosphere. The results were startling: on a per-molecule basis, these industrial chemicals could trap heat up to 10,000 times more effectively than carbon dioxide. (keyt.com)
For three months he repeated his calculations, searching for errors. There were none. He then sent his findings to the scientific journal Science, and his paper was published in 1975 — making the front page of The New York Times and challenging the then-limited understanding of greenhouse warming. (keyt.com)
The Hidden Power of “Super-Pollutants”
At the time, climate science focused largely on carbon dioxide (CO₂) as the principal driver of global warming. Ramanathan’s discovery forced scientists to confront a broader suite of greenhouse agents, including CFCs and other trace gases like methane and nitrous oxide. Soon after, he and colleagues showed that these trace gases could be as important as CO₂ in warming the planet — a finding that helped the scientific community realise climate change would proceed faster than previously thought. (keyt.com)
Ramanathan’s work on these “super-pollutants” was groundbreaking because many of these gases have relatively short lifetimes in the atmosphere compared with CO₂ — meaning that their warming effects are intense and immediate. This insight opened new possibilities for climate mitigation strategies that target short-lived climate pollutants alongside long-lived CO₂. (USCD)
Today, methane, hydrofluorocarbons (HFCs), tropospheric ozone and black carbon are all recognised as powerful climate forcers. Methane, for instance, is over 80 times more effective than CO₂ at trapping heat over a 20-year period, and black carbon — a major component of soot — absorbs sunlight directly, heating the atmosphere. (For deeper science, see the research on short-lived climate pollutants.) (USCD)
Atmospheric Brown Clouds and Regional Climatic Shifts
In the late 1990s, Ramanathan led the Indian Ocean Experiment (INDOEX), an ambitious field campaign involving aircraft, ships and ground stations that documented vast “atmospheric brown clouds” over South Asia — dense layers of soot, organic particles, and other aerosols. (ndtv.com)
These brown clouds had complex effects on regional climate:
- They absorbed sunlight, heating the atmosphere while reducing sunlight at the surface — a phenomenon known as solar dimming.
- They altered rainfall patterns, with implications for monsoons that feed billions of people across South and Southeast Asia.
- They may have contributed to the accelerated melting of Himalayan glaciers, intensifying climate risks across the region. (ndtv.com)
This research showed that human air pollution didn’t just harm local air quality — it was a climate driver in its own right, blurring the line between local environmental health and global climate systems.
From Scientific Insight to Global Policy Impact
Ramanathan’s early research had immediate policy relevance. The realization that CFCs were potent greenhouse agents helped reinforce international momentum toward the Montreal Protocol — the global treaty that phased out CFCs in the late 1980s. By curbing these chemicals, the world prevented additional warming that could have added up to an estimated 1 °C of global temperature rise. (keyt.com)
Beyond that landmark success, Ramanathan’s findings laid the scientific foundation for global efforts to reduce short-lived climate pollutants — an approach now pursued through initiatives such as the Climate and Clean Air Coalition led by the United Nations Environment Programme (UNEP). (USCD)
The Crafoord Prize and a Legacy of Discovery
In January 2026, the Royal Swedish Academy of Sciences announced that Ramanathan would receive the Crafoord Prize in Geosciences — often described as a sibling to the Nobel Prizes. The award honours his pioneering research on how aerosols and trace gases influence Earth’s climate, fundamentally reshaping our understanding of global warming. (wikipedia)
The Crafoord Prize is awarded annually in rotating fields including mathematics, biosciences and geosciences, and carries a monetary award of 8 million Swedish kronor (roughly US $900,000). (wikipedia)
From postdoc computations to field campaigns and atmospheric measurements, Ramanathan’s career has been defined by an ability to see climate science through a broader lens. Rather than focusing narrowly on CO₂, he emphasised the full suite of atmospheric forcings, including short-lived gases and particulate pollution. (keyt.com)
Beyond Discovery: Science with a Human Face
One of the defining threads in Ramanathan’s career has been his concern for how climate change affects vulnerable communities. He has served as a science advisor to multiple popes through the Pontifical Academy of Sciences, stressing that climate change is as much a moral and ethical issue as a scientific one. (keyt.com)
Ramanathan’s work also emphasised that climate impacts — from heatwaves to altered monsoons — are not distant or theoretical. They are here, now, affecting millions of lives. As climate scientists warn of increasing numbers of heatwaves and extreme weather events across the globe, the importance of rapid action has never been clearer. (For recent climate impact reporting, see The Guardian and other climate coverage.) (The Guardian)
A Scientific Life Connected to the Planet
Today, Ramanathan continues to engage with both research and advocacy. He pushes young scientists to uphold rigorous, data-based science and encourages politically informed action to address the climate crisis. His impact extends far beyond his own discoveries: countless researchers have built on his insights into atmospheric physics, climate forcings, and mitigation pathways. (keyt.com)
From refrigerant labs in India to the highest honours in the scientific world, Ramanathan’s path was shaped by curiosity, cross-disciplinary thinking, and a willingness to pursue unexpected questions. One might call him an “accidental” climate scientist — but his contributions have been no accident at all.
Recommended Reading & Sources
- “The accidental climate scientist who uncovered an unexpected force of global warming” — CNN Newsource via KEYT (Jan 28, 2026)
- “Indian-origin climate scientist wins Crafoord Prize” — NDTV (Feb 2, 2026)
- “Distinguished UC San Diego Climate Scientist Awarded Crafoord Prize” — UCSD Today
- Crafoord Prize background — Wikipedia
- Ramanathan biography and accolades — Wikipedia
