Jacob A.B. Bjerknes

National Medal of Science

Physical Sciences

By watching and studying maps he discovered the cyclone-making waves of the air and the climate-controlling changes of the sea.

By watching and studying maps he discovered the cyclone-making waves of the air and the climate-controlling changes of the sea.

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Birth
November 2, 1897
Age Awarded
69
Country of Birth
Sweden
Key Contributions
How Cold And Warm Fronts Work And Their Effect On Climates
Awarded by
Lyndon Baines Johnson
Education
University of Leipzig
University of Oslo
Areas of Impact
Energy & Environment
Affiliations
University of California, Los Angeles
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Decades before television, Jacob Bjerknes perfectly captured the plight of the modern day weatherman, often ridiculed for inaccurate forecasts:

“If only the calculations shall agree with the facts, the scientific victory will be won,” he said in 1914. “Meteorology would then have become an exact science.”

Bjerknes joined a group of scientists – including his father, a famous Norwegian physicist – in theorizing that weather is concentrated in the narrow spaces between warm and cold masses of air.

These masses, later named “fronts,” are responsible for the formation, growth and death of extra-tropical cyclones, which prompt events ranging from thunderstorms to nor’easters, he discovered.

This determination gave meteorologists a better – albeit not always perfect – tool to notify the public of approaching catastrophic inclement weather.

Later in life, Bjerknes turned his attention to atmosphere-ocean interactions, specifically the cause of El Niño.

His findings often serve as the foundation for climate change research.

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