Sangamon field experiments: observations of the diurnal evolution of the planetary boundary layer over land

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Description

Two complementary experimental studies of the evolving structure of the lower 2 km of the atmosphere, conducted over farmlands in central Illinois during essentially the same mid-summer weeks of two successive years, are described. The first experiment (21 July - 13 August 1975) investigated the early morning break up of the nocturnal stable layer and the rapid growth of the mixed layer before noon; the second (16 to 30 July 1976) examined the decline of the mixed layer through the late afternoon and evening, and the formation and intensification of the ground-based inversion before midnight. Methods of observation and data ... continued below

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Pages: 182

Creation Information

Hicks, B.B.; Hess, G.D.; Wesely, M.L.; Yamada, T.; Frenzen, P.; Hart, R.L. et al. September 1, 1981.

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Description

Two complementary experimental studies of the evolving structure of the lower 2 km of the atmosphere, conducted over farmlands in central Illinois during essentially the same mid-summer weeks of two successive years, are described. The first experiment (21 July - 13 August 1975) investigated the early morning break up of the nocturnal stable layer and the rapid growth of the mixed layer before noon; the second (16 to 30 July 1976) examined the decline of the mixed layer through the late afternoon and evening, and the formation and intensification of the ground-based inversion before midnight. Methods of observation and data reduction are summarized in some detail, and the data obtained in the form of hourly wind and temperature profiles, plus sufficient surface flux information to characterize the lower boundary conditions, are tabulated in a series of appendices. These results constitute complete data sets which may be used to test models of the diurnal evolution of the lower atmosphere.

Physical Description

Pages: 182

Notes

NTIS, PC A09/MF A01.

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  • Other Information: Portions of this report are illegible

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  • Other: DE82005436
  • Report No.: ANL/RER-81-1
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/5182195 | External Link
  • Office of Scientific & Technical Information Report Number: 5182195
  • Archival Resource Key: ark:/67531/metadc1054797

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Creation Date

  • September 1, 1981

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 26, 2018, 6:17 p.m.

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Hicks, B.B.; Hess, G.D.; Wesely, M.L.; Yamada, T.; Frenzen, P.; Hart, R.L. et al. Sangamon field experiments: observations of the diurnal evolution of the planetary boundary layer over land, report, September 1, 1981; Illinois. (digital.library.unt.edu/ark:/67531/metadc1054797/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.