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Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2003 → EVALUATION OF SURFACE WATER, RADIATION, AND ENERGY BALANCES, AND POSSIBILITY OF HARVESTING SOLAR AND WIND ENERGIES IN DIFFERENT ECOSYSTEMS

United States Department of Agriculture (USDA) 2003

EVALUATION OF SURFACE WATER, RADIATION, AND ENERGY BALANCES, AND POSSIBILITY OF HARVESTING SOLAR AND WIND ENERGIES IN DIFFERENT ECOSYSTEMS

Solar Wind Energy Balances

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : EVALUATION OF SURFACE WATER, RADIATION, AND ENERGY BALANCES, AND POSSIBILITY OF HARVESTING SOLAR AND WIND ENERGIES IN DIFFERENT ECOSYSTEMS

Identification : UTA00278

Pays : Etats Unis

Durée : Jul 1, 2003 à Jun 30, 2008

Mots clés : agricultural production surface waters solar radiation energy balance waste water salinity solar energy radiometry water balance wind wind energy energy sources ecosystems climate water use efficiency deserts byproducts waste utilization saline water forage production forage yields boron bromus tectorum artemisia tridentata sarcobatus vermiculatus

Partenaire : UTAH STATE UNIVERSITY LOGAN,UT 84322

Objectifs
A- Application of saline wastewater for production of agricultural crops : Saline water is a by-product of the power plants. Irrigation with saline wastewater is used to produce forage crops, such as alfalfa, and puts water that would otherwise have to be evaporated, to productive use. The saline water contains about 149 mg l-l of chloride, and 2980 mg l-l total dissolved solid, which are 74.5 and 8.0 times higher, respectively, than the original nearby river water. The saline wastewater also contains 1.92 mg l-l of Boron compared to the undetected value in the river water. Despite these significant differences in chemical components of the saline wastewater and the river water, statistical analysis has shown no appreciable differences in yields of several forage crops (including alfalfa) irrigated with saline and non-saline water, for the past 15 years (Dudley et al., 2002). B- Evaluation of radiation and energy balances components and cloud parameterization : A vast portion of the western U.S. (including the state of Utah) is covered by rangeland that includes cheat grass (Bromus tectorum L.), greasewood (Sarcobatus vermiculatus), sagebrush (Artemisia tridentata), etc., and bare playas. Little detailed information exists in the long-term (seasonal to annual) evaluation of water, radiation and energy balance components from the dry regions consist of bare soils. Knowledge of water, energy, and radiation balance components in these barren areas will improve our understanding of microclimate over playas for inclusion in the general circulation models (GCMs) at the local and regional scales. C- Study of dew detection, quantification, and modeling of its effects on net radiometry : Dew is a very common and natural phenomenon in which water vapor in the air condenses on a substrate and transforms into liquid water. The dew formation phenomenon can be considered from quite different points of view. Dew occurs preferentially on micro-organisms, because they are hydrophilic. Detecting and quantifying dew in remote and distant areas will be addressed in the another portion of this proposal. D- Evaluation of the possibility of harvesting solar and wind energies : The recent increase in solar and wind power generation efficiency, coupled with increasing demand for electrical power, suggest that the suitability of playas for harvesting wind and solar energies deserves investigation. Comparisons will then be made with comparable measurements from two other stations located in the non-playa but dry environments of central and northern Utah. The purpose of this measurement program is to increase knowledge of radiation and wind distribution in different ecosystems, and to examine the possibility of harvesting solar and wind energies over the vast Great Basin

Présentation : USDA

Page publiée le 14 décembre 2015, mise à jour le 31 octobre 2017