Isaac hero

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Isaac hero

Isaac Meyer Held (born October 23, 1948 in Ulm ) is an American meteorologist and climate researcher.

Life

Held was the son of Holocaust survivors and came to the United States in Minnesota when he was four . He studied physics at the University of Minnesota with a bachelor's degree in 1969, then moved to the State University of New York at Stony Brook , where he switched from theoretical physics to climate research and received his master’s degree in 1970, and graduated from Princeton in 1976 University with Syukuro Manabe . As a post-doctoral student , he was at Harvard University and, from 1978, at the Geophysical Fluid Dynamics Laboratory at Princeton University. He is a Senior Research Scientist there and also teaches at Princeton ( Lecturer in Atmospheric and Oceanic Sciences since 1979).

From 1987 to 1990 he was editor of the Journal of Atmospheric Science.

He has been married to Joann Held since 1974 and has one child.

plant

He deals with large-scale atmospheric dynamics, models of climate sensitivity and variability (depending on solar radiation and greenhouse gases ) and hydrodynamics.

In 1978 he published a paper that showed the importance of the atmospheric temperature gradient for the sensitivity of the climate to solar radiation. In 2006 he and Brian Soden showed that increased precipitation can be compatible with a decrease in Walker circulation if the water vapor content in the lower atmosphere increases as a result of global warming .

In 1975 he showed that regions that are unstable with the formation of Rossby waves form a jet stream ( geostrophic winds ). He used this to explain jets on Jupiter and the sun: small convective cells at the equator transfer their energy to jet winds via geostrophic turbulence. Together with Arthur Hou, he developed a simplified (in relation to the conditions on earth not realistic) theory of the Hadley cell with the elimination of atmospheric turbulence.

Honors and memberships

He is a Fellow of the American Meteorological Society (1991), whose Meisinger Award he received in 1987 and its Carl-Gustaf Rossby Research Medal in 2008, and a Fellow of the American Geophysical Union (1995), whose Roger Revelle Medal he received in 2018. In 1994 he received the Rosenstiel Award from the University of Miami and in 1999 he was Bernhard Haurwitz Memorial Lecturer of the American Meteorological Society. In 2003 he became a member of the National Academy of Sciences . In 2011 he received the BBVA Foundation Frontiers of Knowledge Award in the Climate Change category for his fundamental and pioneering contributions to understanding the structure of atmospheric circulations and the role of water vapor - the most important greenhouse gas - in climate change (laudation).

Web links

Individual evidence

  1. ↑ Date of birth American Men and Women of Science , Thomson Gale 2004 and his CV on his homepage, accessed April 24, 2019.
  2. ↑ Held, The tropospheric lapse rate and climatic sensitivity: Experiments with a two-level atmospheric model, Journal of the Atmospheric Sciences, Volume 35, 1978, pp. 2083-2098.
  3. ↑ Held, Soden, Robust responses of the hydrological cycle to global warming. J. Climate, Volume 19, 2006, pp. 5686-5699.
  4. ^ Held, Momentum transport by quasi-geostrophic eddies, Journal of the Atmospheric Sciences, Volume 32, 1975, pp. 1494-1497
  5. ↑ Held, Hou: Nonlinear axially symmetric circulations in a nearly inviscid atmosphere. Journal of the Atmospheric Sciences, Volume 37, 1980, pp. 515-533
  6. ↑ For outstanding contributions to the study of climate dynamics through studies on energy balance and wave dynamics (laudation)
  7. ↑ for fundamental insights into the dynamics of the earth's climate through studies of idealized models and comprehensive climate simulations (laudation).
personal data
SURNAME Hero, Isaac
ALTERNATIVE NAMES Hero, Isaac Meyer; Hero, Isaac M.
BRIEF DESCRIPTION American meteorologist and climate researcher
DATE OF BIRTH October 23, 1948
PLACE OF BIRTH Ulm