Veerabhadran Ramanathan has laid the foundation for our understanding of how small particles and gases that accumulate in the atmosphere contribute to climate change. This knowledge is vitally important for combatting global warming. The Royal Swedish Academy of Sciences is now awarding him the Crafoord Prize in Geosciences, worth eight million Swedish kronor.
“for fundamental contributions to our understanding of how aerosol particles and other climate pollutants influence the atmospheric energy balance and the Earth system.”
Carbon dioxide emissions are not solely responsible for climate change. Other substances and small particles, like aerosols, also have an impact on the climate. One researcher who has made valuable contributions that show how this complex system is interconnected is Veerabhadran Ramanathan, University of California San Diego, USA.
“He has expanded our view of how humankind is affecting the atmosphere’s composition, the climate and air quality, and how these three interact,” says Ilona Riipinen, professor of atmospheric sciences at Stockholm University and member of the Crafoord Prize Committee for Geosciences.
Already in the 1980s
As early as the 1980s, professor Ramanathan played an important role in NASA’s use of satellites to measure Earth’s energy budget – the balance between energy from the Sun that reaches Earth in the form of radiation and the heat that Earth then emits back into space. The results showed that greenhouse gases from human activities are trapping an increasing proportion of the re-radiation in the atmosphere and thus contributing to global warming.
Ramanathan also studied how CFCs, known as freons from refrigerators and spray cans, not only affected the ozone layer, but the climate as well. He continued to take an interest in various forms of aerosols, tiny particles, in the atmosphere.
In a large experiment in the Indian Ocean, researchers observed that the air contained high levels of pollutants – even far out at sea. Some of these dark aerosols, such as soot particles, absorb radiation and can thus contribute to heating the atmosphere.
Practical significance
This new knowledge has had great practical significance and formed the basis for international agreements. Ramanathan has influenced many people, from politicians to popes.
“His quiet but effective way of communicating has been key to involving both the research community and decision-makers. With an eye for the most vulnerable on our planet and an ear for younger researchers, he has inspired an entire generation of climate scientists,” says Örjan Gustafsson, professor of biogeochemistry at Stockholm University.
Based on fundamental principles
Professor Ramanathan himself is delighted and honoured on learning that he has been awarded the Crafoord Prize. Among other things, he highlights how important it is that climate research, which has recently become a matter of debate, is being rewarded by the Royal Swedish Academy of Sciences.
“This prize shows that climate science is based on the best possible observations and fundamental principles of physics and chemistry. It gives me a forum to talk about the science of climate change and build public trust in climate science.”
FACTS/The laureate
Veerabhadran Ramanathan is Distinguished Professor (Emeritus) of Atmospheric and Climate Sciences at the Scripps Institution of Oceanography, University of California San Diego, USA. He was born in 1944 in Chennai, India, and received his PhD in 1974 from the State University of New York, USA.
Veerabhadran Ramanathan, UC San Diego
FACTS/The Crafoord Prize
The Crafoord Prize is awarded in partnership between the Royal Swedish Academy of Sciences and the Crafoord Foundation in Lund, Sweden. The Academy is responsible for selecting the laureates. The disciplines, which change every year, are mathematics and astronomy, polyarthritis (systemic diseases that cause inflammation in the joints) geosciences and biosciences. The 2026 prize is in geosciences.
The Crafoord Prize Laureate will receive 8 million Swedish kronor. The prize will be awarded in conjunction with Crafoord Days in Lund and Stockholm, 18–20 May and will be presented to the laureate by H. M. King Carl XVI Gustaf of Sweden.
Press photos
Contacts
Experts
Ilona Riipinen, Professor of Atmospheric Sciences at Stockholm University, member of the Royal Swedish Academy of Sciences and of the Crafoord Prize Committee for Geosciences
ilona.riipinen@aces.su.se
+46-73-585 92 51
Örjan Gustafsson, Professor of Biogeochemistry at Stockholm University, member of the Royal Swedish Academy of Sciences
orjan.gustafsson@aces.su.se
+46-70-324 73 17
Press contact
Eva Nevelius, Press Secretary at the Royal Swedish Academy of Sciences
eva.nevelius@kva.se
+46-70-878 67 63
