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The canopy horizontal array turbulence study

  • Author(s): Patton, EG
  • Horst, TW
  • Sullivan, PP
  • Lenschow, DH
  • Oncley, SP
  • Brown, WOJ
  • Burns, SPP
  • Guenther, AB
  • Held, A
  • Karl, T
  • Mayor, SD
  • Rizzo, LV
  • Spuler, SM
  • Sun, J
  • Turnipseed, AA
  • Awine, EJ
  • Edburg, SL
  • Lamb, BK
  • Avissar, R
  • Calhoun, RJ
  • Kleissl, J
  • Massman, WJ
  • Paw U, KT
  • Weil, JC
  • et al.
Abstract

The Canopy Horizontal Array Turbulence Study (CHATS) experimental study was conducted at a Cilker Orchards's walnut blocks in Dixon, California, before and after leaves emerged, to help improve understanding, simulation capabilities, and modeling of coupled vegetation-atmosphere-land surface interactions. The campaign took place over 12 weeks in the spring of 2007 and was broken into three 4-week phases. Canopy-induced mechanical and thermodynamical vertical variation of turbulence transport characteristics and the linkages between canopy-scale motions and the larger scale planetary boundary layer (PBL) turbulence were measured. The observations focused on measurements characterizing stratification influences on the spatial structure of canopy-induced turbulence, the trace gas source/sink distribution associated with vegetation, and the overall impact of canopy-induced processes on trace gas transport.

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