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Geophysical investigation for proposed flow meter installation holes, 100H Area

Description: The objectives of the surveys were to locate subsurface obstructions that may affect the drilling of two holes to be fit with flow meters in the 100-H Area of the Hanford Site (Figure 1). Possible drill sites with the least likelihood of encountering identified obstructions were identified based upon the results of the survey. Ground-penetrating radar (GPR) was the method selected for the investigations. The electromagnetic induction method was also used to verify that the general site is relat… more
Date: December 29, 1994
Creator: Kiesler, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gulf stream frontal eddy influence on productivity of the southeast U.S. continental shelf

Description: Weekly period meanders and eddies are persistent features of Gulf Stream frontal dynamics from Miami, FL, to Cape Hatteras, NC. Satellite imagery and moored current and temperature records reveal a spatial pattern of preferred regions for growth and decay of frontal disturbances. Growth regions occur off Miami, Cape Canaveral and Cape Fear due to baroclinic instability, and decay occurs in the confines of the Straits of Florida between Miami and Palm Beach, between 30{degrees} and 32{degrees}N … more
Date: January 1, 1991
Creator: Lee, T. M.; Yoder, J. & Atkinson, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Formation of gas-phase peroxides in a rural atmosphere: An interpretation of the recent SOS/SERON field results

Description: Hydrogen perioxide (H{sub 2}O{sub 2}) and certain organic peroxides such as hydroxymethyl-hydroperoxide (HMHP), are gas-phase oxidants present in the atmosphere at ppbv concentration levels. These oxidants play an important role in atmospheric chemistry. In addition, precipitation containing H{sub 2}O{sub 2} is toxic to trees, and it has also been suggested that organic peroxides formed presumably by ozone reactions with biogenic alkenes are responsible for leaf disorders. Recently, we have dev… more
Date: September 1, 1993
Creator: Lee, J. H.; Tang, I. N. & Weinstein-Lloyd, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Population Differentiation in Tree-Ring Growth Response of White Fir (Abies Concolor) to Climate: Implications for Predicting Forest Responses to Climate Change

Description: Forest succession models and correlative models have predicted 200--650 kilometer shifts in the geographic range of temperate forests and forest species as one response to global climate change. Few studies have investigated whether population differences may effect the response of forest species to climate change. This study examines differences in tree-ring growth, and in the phenotypic plasticity of tree-ring growth in 16-year old white fir, Abies concolor, from ten populations grown in four… more
Date: October 1, 1993
Creator: Jensen, D. B.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Physical basis for climate change models

Description: The objectives for this research were two-fold: To identify means of using measurements of the outgoing radiation stream from earth to identify mechanisms of climate change; and to develop a flexible radiation code based upon the correlated-k method to enable rapid and accurate calculations of the outgoing radiation. The intended products are three papers and a radiation code. The three papers are to be on Entropy fluxes and the dissipation of the climate system, Radiation fingerprints of clima… more
Date: October 18, 1993
Creator: Goody, R. & Gerstell, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atmospheric Sciences Program summaries of research in FY 1993

Description: This document describes the activities and products of the Atmospheric Science Program of the Environmental Sciences Division, Office of Health and Environmental Research, Office of Energy Research, in FY 1993. Each description contains the project`s title; three-year funding history; the contract period over which the funding applies; the name(s) of the principal investigator(s); the institution(s) conducting the projects; and the project`s objectives, products, approach, and results to date. … more
Date: November 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of snails (Elimia clavaeformis) on phosphorus cycling in stream periphyton and leaf detritus communities

Description: In this study, the author examined the effect of grazing on phosphorus cycling in stream periphyton and leaf detritus communities using the snail Elimia clavaeformis. Phosphorus cycling fluxes and turnover rates were measured in a laboratory and in a natural stream, respectively, using radioactive tracer techniques.
Date: October 1, 1993
Creator: Jay, E. A.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Poster session ELIPGRID-PC

Description: ELIPGRID-PC, a new personal computer program, has been developed to provide easy access to Singer`s ELIPGRID algorithm for hot-spot detection probabilities. Three features of the program are the ability to determine: (1) the grid size required for specified conditions, (2) the smallest hot spot that can be sampled with a given probability, and (3) the approximate grid size resulting from specified conditions and sampling cost. ELIPGRID-PC also provides probability of detection versus cost data … more
Date: February 1, 1995
Creator: Davidson, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sharp-tailed Grouse and Pygmy Rabbit Wildlife Mitigation Project. Final Environmental Assessment

Description: The Proposed Action is needed to protect and enhance shrub-steppe and riparian habitat for sharp-tailed grouse (Tympanuchus phasianellus columbianus), Pygmy rabbits (Brachylagus idahoensis), and other indigenous wildlife species. The purpose of the Proposed Action is to compensate, in part, for wildlife habitat lost from the construction of Grand Coulee Dam and the inundation of Lake Roosevelt. Bonneville Power Administration proposes to fund management agreements, conservation easements, acqui… more
Date: October 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Precipitation scavenging models: Sensitivities, tests, and applications

Description: ``Multiphase`` atmospheric-chemistry models can be described as atmospheric-pollutant simulations that explicitly differentiate between physical phases in the atmosphere (.e.g., gas, cloud water, rain water, snow,...), and directly compute chemical transport and transformation behavior between and within each of these individual phases. Initially formulated for specific application to precipitation-scavenging analysis, many attributes of these models have become incorporated into the more gener… more
Date: July 1, 1991
Creator: Hales, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Site Scientific Mission Plan for the southern Great Plains CART site, July--December 1993

Description: The southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site is designed to help satisfy the data needs of the Atmospheric Radiation Measurement (ARM) Program Science Team. This document defines the scientific priorities for site activities during the six-months beginning on July 1, 1993, and also looks forward in lesser detail to subsequent six-month periods. The primary purpose of this Site Scientific Mission Plan is to provide guidance for the development of plans for site operati… more
Date: August 1, 1993
Creator: Schneider, J. M.; Lamb, P. J. & Sisterson, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Boundary-layer cumulus over land: Some observations and conceptual models

Description: Starting in 1980, the Boundary Layer Research Team at the University of Wisconsin has been systematically studying the formation and evolution of nonprecipitating boundary-layer cumulus clouds (BLCu) in regions of fair weather (anticyclones) over land (Stull, 1980). Our approach is to quantify the average statistical characteristics of the surface, thermals, boundary layer, and clouds over horizontal regions of roughly 20 km in diameter. Within such a region over land, there is typically quite … more
Date: September 1, 1993
Creator: Stull, R. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An overview of the ASCOT program

Description: ASCOT (Atmospheric Studies in Complex Terrain) is a multi-laboratory U.S. Department of Energy research program studying the properties of atmospheric boundary layers over non-uniform terrain and the interactions among various scales of motion that influence those properties. Within this context, one of the principal goals of the ASCOT program is to provide information necessary for an accurate description of transport and diffusion processes for atmosphere pollutants that may be released in re… more
Date: September 1, 1993
Creator: Doran, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mammals of the Savannah River Site

Description: This book is designed to be used as a field guide, reference book, bibliography, and introduction to the basic biology and ecology of the 54 mammal species that currently or potentially exist on or near the Savannah River Site (SRS). For 50 of these species, we present basic descriptions, distinguishing morphological features, distribution and habitat preferences, food habits, reproductive biology, social behavior, ecological relationships with other species, and economic importance to man. For… more
Date: December 31, 1991
Creator: Cothran, E. G.; Smith, M. H.; Wolff, J. O. & Gentry, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Apportionment of multiple aerosol size distributions modes using factor analysis techniques

Description: This research in progress is concerned with developing the capability to ojectively partition aerosol size distribution data into a small number of modes, that together explain most of the variation of the observed data. It is desired to determine from analysis in the field of the optical spectrometer data when a particular mode is present and to collect filter samples to determine the chemical composition of that mode. The results would relate aerosol size distributions to chemical composition. more
Date: December 31, 1990
Creator: Williams, Allen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Coastal Ocean Prediction Systems program: Understanding and managing our coastal ocean. Volume 2: Overview and invited papers

Description: This document is a compilation of summaries of papers presented at the Coastal Ocean Prediction Systems workshop. Topics include; marine forecasting, regulatory agencies and regulations, research and application models, research and operational observing, oceanic and atmospheric data assimilation, and coastal physical processes.
Date: May 15, 1990
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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[High spectral resolution FTIR observations for the ARM program: Continued development, evaluation and analysis]

Description: The proposed UW/UD team worked together very successfully in the previous ARM IDP and earlier in the development of the High-resolution Interferometer Sounder (HIS) aircraft instrument for NOAA and NASA. The UW is responsible for the Atmospheric Emitted Radiance Interferometer (AERI) and for providing AERI-based calibration subsystems and operational software for the AERI-X, while the UD is responsible for the Solar Radiance Transmission Interferometer (SORT) and for developing the AERI-X inter… more
Date: December 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Science team participation in the ARM program. Progress report, October 31, 1992--November 1, 1993

Description: This progress report discusses the Science Team participation in the Atmospheric Radiation Measurement (ARM) Program for the period of October 31, 1992 to November 1, 1993. This report summarized the research accomplishments of six papers.
Date: November 1, 1993
Creator: Cess, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Concentration System Performance Degradation in the Aftermath of Mount Pinatubo

Description: Major volcanic eruptions occur every few years, but most have little effect on solar radiation or climate. However, in the last ten years two volcanoes have decreased solar radiation and influenced weather at a level that might be expected at the frequency of about once a century. The Mexican volcano El Chichon and the Philippine volcano Mount Pinatubo put 6 and 20 million metric tons of SO{sub 2} in the stratosphere, respectively. SO{sub 2} is converted into H{sub 2}SO{sub 4}, which mixes with… more
Date: November 1, 1993
Creator: Michalsky, J. J.; Perez, R.; Seals, R. & Ineichen, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical simulation of coupled flow and transport with TOUGH2: A verification study

Description: We have tested T2DM, the dispersion module of TOUGH2, on two classic flow problems: (1) the seawater intrusion problem of Henry (1964); and (2) the pure solutal free convection problem of Elder (1967). T2DM produces results in agreement with prior work for similar spatial discretizations. In the Henry problem, finer spatial discretization allows the seawater tongue to penetrate slightly farther without affecting the overall flow dynamics. In the strongly coupled pure solutal free convection pro… more
Date: October 1, 1994
Creator: Oldenburg, C. M. & Pruess, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kinetics and dynamics of oxidation reactions involving an adsorbed CO species on bulk and supported platinum and copper-oxide. First year annual report, January 1, 1991--December 31, 1991

Description: The proposed research is an integrated experimental and modeling study of oxidation reactions involving CO as a key player -- be it a reactant, adsorbed intermediate, and/or partial oxidation product -- in the catalytic sequence and chemistry. The reaction systems of interest in the project include CO, formaldehyde, and methanol oxidation by O{sub 2} and CO oxidation by NO, on both Pt and copper oxide catalysts. These reactions are of importance in automobile exhaust catalysis. There is a pauci… more
Date: July 1, 1991
Creator: Harold, M. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A parallel coupled oceanic-atmospheric general circulation model

Description: The Climate Systems Modeling group at LLNL has developed a portable coupled oceanic-atmospheric general circulation model suitable for use on a variety of massively parallel (MPP) computers of the multiple instruction, multiple data (MIMD) class. The model is composed of parallel versions of the UCLA atmospheric general circulation model, the GFDL modular ocean model (MOM) and a dynamic sea ice model based on the Hiber formulation extracted from the OPYC ocean model. The strategy to achieve par… more
Date: December 1, 1994
Creator: Wehner, M. F.; Bourgeois, A. J.; Eltgroth, P. G.; Duffy, P. B. & Dannevik, W. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Atmospheric and dispersion modeling in areas of highly complex terrain employing a four-dimensional data assimilation technique

Description: The results of this study indicate that the current data assimilation technique can have a positive impact on the mesoscale flow fields; however, care must be taken in its application to grids of relatively fine horizontal resolution. Continuous FDDA is a useful tool in producing high-resolution mesoscale analysis fields that can be used to (1) create a better initial conditions for mesoscale atmospheric models and (2) drive transport models for dispersion studies. While RAMS is capable of pred… more
Date: December 31, 1994
Creator: Fast, J. D. & O`Steen, B. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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