Jacob Bjerknes

Jacob Bjerknes was a renowned Norwegian meteorologist and oceanographer who made significant contributions to the fields of meteorology and oceanography, particularly in the understanding of El Niño and the North Atlantic Oscillation. He is best known for his work on the Bjerknes feedback mechanism, which explains the relationship between sea surface temperature and atmospheric circulation. Bjerknes' research was influenced by his collaborations with prominent scientists such as Vilhelm Bjerknes, his father, and Carl-Gustaf Rossby, a fellow meteorologist. His work built upon the foundations laid by earlier scientists, including Henrik Mohn and Fridtjof Nansen.

● Early Life and Education

Jacob Bjerknes was born in Stockholm, Sweden, to Vilhelm Bjerknes and Honoria Bonnevie Bjerknes. He spent his early years in Oslo, Norway, and developed an interest in meteorology and oceanography through his father's work at the University of Oslo. Bjerknes pursued his higher education at the University of Oslo, where he studied physics and mathematics under the guidance of Svein Rosseland and Kristian Birkeland. He later moved to the University of Leipzig to work with Ludwig Prandtl, a prominent fluid dynamicist, and Heinrich Hergesell, a renowned meteorologist.

● Career

Bjerknes began his career as a research assistant at the Geophysical Institute, University of Bergen, where he worked alongside Harald Sverdrup and Hans Egede. He later joined the University of California, Berkeley as a research associate, collaborating with Joanne Simpson and Jule Charney. In the 1940s, Bjerknes became the director of the Norwegian Meteorological Institute, where he worked closely with Erik Palmén and Tor Bergeron. He also held positions at the Massachusetts Institute of Technology and the University of California, Los Angeles, where he interacted with prominent scientists such as Norman Phillips and Edwin Kessler.

● Research and Contributions

Bjerknes' research focused on the interactions between the atmosphere and the oceans, particularly in the context of climate variability. He is credited with the discovery of the Bjerknes feedback mechanism, which explains the relationship between sea surface temperature and atmospheric circulation. His work on El Niño and the North Atlantic Oscillation has had a significant impact on our understanding of climate variability. Bjerknes also made important contributions to the development of numerical weather prediction, working closely with scientists such as John von Neumann and Jule Charney. His research was influenced by the work of earlier scientists, including Gilbert Walker and Sir George Simpson.

● Personal Life

Bjerknes was married to Golda Bjerknes, and they had two children, Jack Bjerknes and Kirsten Bjerknes. He was known for his love of mountaineering and sailing, and was an avid photographer. Bjerknes was also a member of the Norwegian Academy of Science and Letters and the American Meteorological Society, and served as the president of the International Association of Meteorology and Atmospheric Sciences. He interacted with prominent scientists, including Carl-Gustaf Rossby and Tor Bergeron, through his membership in these organizations.

● Legacy

Jacob Bjerknes' legacy extends far beyond his own research contributions, as he played a significant role in shaping the field of meteorology and oceanography. His work on El Niño and the North Atlantic Oscillation has had a lasting impact on our understanding of climate variability. The Bjerknes feedback mechanism remains a fundamental concept in climate science, and his contributions to the development of numerical weather prediction have improved our ability to forecast the weather. Bjerknes' legacy is also reflected in the work of his students and colleagues, including Edwin Kessler and Norman Phillips, who have gone on to make significant contributions to the field. Today, the Jacob Bjerknes Lecture is presented annually by the American Meteorological Society in recognition of his contributions to the field of meteorology. Category:Norwegian scientists