Measurement and analysis of the surface energy budget for ARM field experiments. Final report
- Illinois State Water Survey, Champaign, IL (United States)
The objective of this study is to conduct experiments to investigate the scaling properties of surface-atmosphere interactions and feedbacks as they relate to regional fluxes of heat and water vapor. This is part of the US Department of Energy`s Atmospheric Radiation Measurement program. To achieve this objective, two field campaigns were conducted in northeastern Oregon during June 1991 and June 1992. Analysis of the data collected during these campaigns revealed the following: (1) fluxes over a dry, semi-arid grass/brush area show only small spatial heterogeneity; (2) fluxes over an irrigated farm were dependent on crop type and stage of development. In particular, fluxes over row crops such as potatoes and corn were very similar to each other, but somewhat different than fluxes over wheat and alfalfa. In general, higher latent and lower sensible heat fluxes were experienced over wheat and alfalfa compared to corn and potatoes; (3) meteorological factors had a major influence on fluxes. In particular, significantly higher latent heat fluxes were experienced on days with moderate winds compared to days with light winds over the irrigated farm. This was presumably due to the advection of sensible heat from the surrounding dry rangeland.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Illinois State Water Survey, Champaign, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 28285
- Report Number(s):
- LA-SUB-95-33; ON: DE95007646; TRN: AHC29510%%90
- Resource Relation:
- Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Handbook of energy utilization in agriculture. [Collection of available data]
Boundary layer characteristics over areas of inhomogeneous surface fluxes