The LettauSchwerdtfeger Balloon Experiment: Measurement of Turbulence via Austausch Theory

The LettauSchwerdtfeger Balloon Experiment: Measurement of Turbulence via Austausch Theory In the early 1930s, Heinz Lettau and Werner Schwerdtfeger made direct measurements of air motion in the lowest 4 km of the troposphere by using the manned free balloon as an instrumented platform. The experiment was motivated by Wilhelm Schmidt's and Ludwig Prandtl's work on Austausch (exchange) theory in the second and third decades of the twentieth century. As a prelude to investigating the LettauSchwerdtfeger experiment, historical developments that had bearing on the field program are reviewed. Following this review, the experiment is analyzed by 1) documenting the scientific goals, 2) discussing the strategy for data collection, 3) examining one flight in detail (the flight of 25 February 1934), and 4) summarizing results from the experiment. The paper ends with a retrospective view of Austausch theory. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the American Meteorological Society American Meteorological Society

The LettauSchwerdtfeger Balloon Experiment: Measurement of Turbulence via Austausch Theory

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0477
D.O.I.
10.1175/1520-0477(1997)078<2619:TLSBEM>2.0.CO;2
Publisher site
See Article on Publisher Site

Abstract

In the early 1930s, Heinz Lettau and Werner Schwerdtfeger made direct measurements of air motion in the lowest 4 km of the troposphere by using the manned free balloon as an instrumented platform. The experiment was motivated by Wilhelm Schmidt's and Ludwig Prandtl's work on Austausch (exchange) theory in the second and third decades of the twentieth century. As a prelude to investigating the LettauSchwerdtfeger experiment, historical developments that had bearing on the field program are reviewed. Following this review, the experiment is analyzed by 1) documenting the scientific goals, 2) discussing the strategy for data collection, 3) examining one flight in detail (the flight of 25 February 1934), and 4) summarizing results from the experiment. The paper ends with a retrospective view of Austausch theory.

Journal

Bulletin of the American Meteorological SocietyAmerican Meteorological Society

Published: Nov 1, 1997

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