31 Matching Results

Search Results

Advanced search parameters have been applied.

in subjects: "Night Sky"

open access

A Radiometric All-Sky Infrared Camera (RASICAM) for DES/CTIO

A novel radiometric all-sky infrared camera [RASICAM] has been constructed to allow automated real-time quantitative assessment of night sky conditions for the Dark Energy Camera [DECam] located on the Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. The camera is optimized to detect the position, motion and optical depth of thin, high (8-10km) cirrus clouds and contrails by measuring their apparent temperature above the night sky background. The camera system utilizes … more

Date: August 25, 2010

Creator: Lewis, Peter M.; Rogers, Howard & Schindler, Rafe H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Prognostic atmospheric and dispersion modeling in the vicinity of Rocky Flats Plant

A multiscale four-dimensional data assimilation technique is incorporated into a mesoscale model and evaluated using meteorological and tracer data collected during the Atmospheric Studies in Complex Terrain (ASCOT) field experiment in the winter of 1991. The mesoscale model is used to predict the interaction of synoptically-driven flows and small-scale circulations influenced by terrain along the Front Range in Colorado in the vicinity of the Rocky Flats Plant for four nocturnal periods during… more

Date: April 1, 1995

Creator: Fast, J.D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Assessment of MTI Water Temperature Retrievals with Ground Truth from the Comanche Peak Steam Electric Station Cooling Lake

Surface water temperatures calculated from Multispectral Thermal Imager (MTI) brightness temperatures and the robust retrieval algorithm, developed by the Los Alamos National Laboratory (LANL), are compared with ground truth measurements at the Squaw Creek reservoir at the Comanche Peak Steam Electric Station near Granbury Texas. Temperatures calculated for thirty-four images covering the period May 2000 to March 2002 are compared with water temperatures measured at 10 instrumented buoy locatio… more

Date: December 9, 2002

Creator: Kurzeja, R.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Assessment of (mu)grid distributed energy resource potential using DER-CAM and GIS

This report outlines an approach to assess the local potential for deployment of distributed energy resources (DER), small power-generation installations located close to the point where the energy they produce will be consumed. Although local restraints, such as zoning, building codes, and on-site physical barriers are well-known frustrations to DER deployment, no analysis method has been developed to address them within a broad economic analysis framework. The approach developed here combines… more

Date: January 1, 2002

Creator: Edwards, Jennifer L.; Marnay, Chris; Bartholomew, Emily; Ouaglal, Boubekeur; Siddiqui, Afzal S. & LaCommare, Kristina S.H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Method of measuring nighttime U-values using the Mobile Window Thermal Test (MoWiTT) Facility

Although primarily designed for studying the dynamic net energy flows through fenestration systems over the full diurnal cycle, the Mobile Window Thermal Test (MoWiTT) Facility is also frequently used to measure nighttime U-values. These measurements have the advantage of incorporating the exterior film coefficient resulting from the true ambient conditions at a particular time and location, rather than relying on a laboratory simulation of some assumed average or extreme condition. On the othe… more

Date: April 1, 1992

Creator: Klems, J. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of radiative-cooling materials. Final technical report: FY 1980-1981

Work on research and development on glazing and selective emitter materials that will enhance day and night sky radiative cooling is described. The emphasis is on glazing development with a secondary interest in the appropriate selective emitter. The testing focused on the individual material properties. (MHR)

Date: January 1, 1981

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Solar Energy Program: Chapter from the Energy and EnvironmentalDivision Annual Report 1980

Solar energy has become a major alternative for supplying a substantial fraction of the nation's future energy needs. The U.S. Department of Energy (DOE) supports activities ranging from the demonstration of existing technology to research on future possibilities. At Lawrence Berkeley Laboratory (LBL), projects are in progress that span a wide range of activities, with the emphasis on research to extend the scientific basis for solar energy applications, and on preliminary development of new ap… more

Date: March 1, 1981

Creator: Division, Energy and Environment

Item Type: Report

Partner: UNT Libraries Government Documents Department