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Comment on ''Sensitivity Analysis and Determination of Streambed Leakance and Aquifer Hydraulic Properties'' by Xunhong Chen and Xi Chen, Journal of Hydrology, 2003, v.284, 270-284

Description: Recently, studies of the Platte River watershed have gained significant attention from federal and Nebraska, USA, state agencies due to the importance of groundwater/surface-water interactions under drought conditions. Using archive data from a 1983 pumping test, Chen and Chen (2003) interpret the hydraulic properties of the alluvium and a streambed of the Platte River near Kearney, Nebraska, and compare their data with results of other studies performed over the past several years. Three impor… more
Date: May 17, 2004
Creator: Kollet, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Water: May be the Best Near-Term Benefit and Driver of a Robust Wind Energy Future (Poster)

Description: Water may be the most critical natural resource variable that affects the selection of generation options in the next decade. Extended drought in the western United States and more recently in the Southeast has moved water management and policy to the forefront of the energy options discussions. Recent climate change studies indicate that rising ambient temperatures could increase evapotranspiration by more than 25% to 30% in large regions of the country. Increasing demand for electricity, and … more
Date: May 1, 2009
Creator: Flowers, L. & Reategui, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Drought resilience of the California Central Valley surface-groundwater-conveyance system

Description: A series of drought simulations were performed for the California Central Valley using computer applications developed by the California Department of Water Resources and historical datasets representing a range of droughts from mild to severe for time periods lasting up to 60 years. Land use, agricultural cropping patterns, and water demand were held fixed at the 2003 level and water supply was decreased by amounts ranging between 25 and 50%, representing light to severe drought types. Impacts… more
Date: May 15, 2009
Creator: Miller, N. L.; Dale, L. L.; Brush, C.; Vicuna, S.; Kadir, T. N.; Dogrul, E. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

How plant functional-type, weather, seasonal drought and soil physical properties alter water and energy fluxes of an oak-grass savanna and an annual grassland.

Description: Savannas and open grasslands often co-exist in semi-arid regions. Questions that remain unanswered and are of interest to biometeorologists include: how do these contrasting landscapes affect the exchanges of energy on seasonal and annual time scales; and, do biophysical constraints imposed by water supply and water demand affect whether the land is occupied by open grasslands or savanna? To address these questions, and others, we examine how a number of abiotic, biotic and edaphic factors modu… more
Date: May 1, 2004
Creator: Baldocchi, DD, Xu L, Kiang N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimating Annual Precipitation in the Fenner Basin of the Eastern Mojave Desert, California

Description: Metropolitan Water District (MWD) of southern California and Cadiz Inc. investigated the feasibility of storing Colorado River water in groundwater aquifers of the eastern Mojave Desert as a future drought mitigation strategy. This culminated in the public release of the Cadiz Groundwater Storage and Dry-Year Supply program Draft EIR, which included pilot percolation studies, groundwater modeling, and precipitation/runoff analysis in the Fenner groundwater basin, which overlies the proposed sto… more
Date: May 15, 2000
Creator: Davisson, M.L. & Rose, T.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physiology and Regulation of Calcium Channels in Stomatal Guard Cells

Description: Stomatal pores in the epidermis of leaves regulate the diffusion of CO2 into leaves for photosynthetic carbon fixation and control water loss of plants during drought periods. Guard cells sense CO2, water status, light and other environmental conditions to regulate stomatal apertures for optimization of CO2 intake and plant growth under drought stress. The cytosolic second messenger calcium contributes to stomatal movements by transducing signals and regulating ion channels in guard cells. Stud… more
Date: May 2, 2007
Creator: Schroeder, Julian I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

What is the potential predictability of seasonal floods and droughts?

Description: The potential predictability (PP) of seasonal anomalies in continental hydrology may be thought of as the upper bound in forecast accuracy to be expected when the state of the oceans is known perfectly. We assume that the PP of the seasonal anomalies of continental hydrology is related to their degree of reproducibility in the presence of identical ocean boundary conditions across a number of simulations. In this study, the PP of seasonal anomalies in surface hydrological variables is estimated… more
Date: May 1, 1996
Creator: Phillips, T. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Calibrated Maxey-Eakin Curve for the Fenner Basin of the Eastern Mojave Desert, California

Description: Metropolitan Water District (MWD) of southern California and Cadiz Inc. investigated the feasibility of storing Colorado River water in groundwater aquifers of the eastern Mojave Desert as a future drought mitigation strategy. This culminated in the public release of the Cadiz Groundwater Storage and Dry-Year Supply program Draft EIR, which included pilot percolation studies, groundwater modeling, and precipitation/runoff analysis in the Fenner groundwater basin, which overlies the proposed sto… more
Date: May 15, 2000
Creator: Davisson, M.L. & Rose, T.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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