/AnMtgsAbsts2009.55078 Evaluating Flux-Variance Relationships Under Strongly Advective Conditions During BEAREX08.

Tuesday, November 3, 2009: 11:45 AM
Convention Center, Room 326, Third Floor

William Kustas, USDA-ARS Hydrology & Remote Sens. Lab, USDA-ARS, Beltsville, MD, John Prueger, USDA-ARS, Natl. Soil Tilth Lab., Ames, IA, Hipps L.H. Hipps, Plant, Soils & Climate Department, Utah State Univ., Logan, UT, Albania, Jose Chavez, Irrigation Engineering Department, Colorado State Univ., Fort Collins, TX and Andrew French, USDA-ARS, PWA-USALARC, Maricopa, AZ
Abstract:
Flux-variance approaches for latent and sensible heat flux using eddy covariance (EC) tower data from the Evapotranspiration and Agricultural Remote Sensing Experiment (BEAREX08) are evaluated for irrigated and non-irrigated cotton,a pasture grassland surface, a fallow wheat field and a 10 m EC tower influenced by both irrigated and non-irrigated sources.  BEAREX08 was conducted at the Conservation Production Research Laboratory (CPRL) in Bushland, TX a  region known for  significant advection with strong  winds. It is unknown how conditions of strong advection  will affect flux-variance relationships developed from Monin-Obukhov similarity theory using turbulence data collected over extensive and homogeneous non-advective landscapes.  A discussion of the effects of advection on these relationships and potential use of flux-variance methods in this type of environment will be presented