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Preliminary Investigations of Outdoor Meteorological Broadband and Spectral Conditions for Evaluating Photovoltaic Modules and Systems

Description: Historically, flat-plate photovoltaic (PV) modules have been rated at "peak-output" for power generated under Standard; Reporting Conditions (SRC) of 1000 Watts per square meter W/m2 global irradiance at a standard temperature (25degC) and reference spectral distribution. We examine the direct-normal irradiance, spectral distribution, ambient temperature, and wind speed to be used for evaluating flatplate and concentrator module performance. Our study is based upon the 30-year U.S. National Sol… more
Date: January 1, 2000
Creator: Myers, D. R.; Kurtz, S. R.; Whitaker, C. & Townsend, T.
Partner: UNT Libraries Government Documents Department
open access

STANDARD AND NON-STANDARD SOLAR MODELS

Description: No Description Available.
Date: June 1, 2000
Creator: GUZIK, J. A.; NUEFORGE-VERHEECKE, C. & AL, ET
Partner: UNT Libraries Government Documents Department
open access

Characterization of the atmospheric state: Lower boundary condition

Description: It is convenient to consider 2 broad categories of climate-related modeling studies for which it is necessary to specify some kind of lower boundary conditions. The first of these categories is the use of general circulation or weather forecasting models, perhaps modified to carry out climate simulations. In these models, one normally has to specify something about the albedo of the surface to get the radiation balance right, the surface roughness to get the momentum exchange right, and the sur… more
Date: April 4, 2000
Creator: Doran, J. C.; Barnard, J. C.; Hubbe, J. M.; Liljegren, J. C.; Shaw, W. J.; Zhong, S. et al.
Partner: UNT Libraries Government Documents Department
open access

Model for Staebler-Wronski degradation deduced from long-term, controlled light-soaking experiments

Description: Long-term light-soaking experiments of amorphous silicon photovoltaic modules have now established that stabilization of the degradation occurs at levels that depend significantly on the operating conditions, as well as on the operating history of the modules. The authors suggest that stabilization occurs because of the introduction of degradation mechanisms with different time constants and annealing activation energies, depending on the exposure conditions. Stabilization will occur once a suf… more
Date: May 15, 2000
Creator: Von Roedern, B. & del Cueto, J. A.
Partner: UNT Libraries Government Documents Department
open access

The North Slope of Alaska and Adjacent Arctic Ocean (NSA/AAO) cart site begins operation: Collaboration with SHEBA and FIRE

Description: Since the 1997 Atmospheric Radiation Measurement (ARM) Science Team Meeting, the North Slope of Alaska and Adjacent Arctic Ocean (NSA/AAO) Cloud and Radiation Testbed (CART) site has come into being. Much has happened even since the 1998 Science Team Meeting at which this paper was presented. To maximize its usefulness, this paper has been updated to include developments through July 1998.
Date: April 4, 2000
Creator: Zak, D. B.; Church, H.; Ivey, M.; Yellowhorse, L.; Zirzow, J.; Widener, K. B. et al.
Partner: UNT Libraries Government Documents Department
open access

SuomiNet efforts in the U. S. Southern Great Plains.

Description: SuomiNet provides great promise for advancing research at the University of Oklahoma in numerical weather prediction and plate tectonics studies, and will further help the U.S. DOE ARM (Atmospheric Radiation Measurement) Program better specify the measurement of water vapor over the Southern Great Plains. The SuomiNet program is also allowing ARM to upgrade its data collection infrastructure to provide more reliable and near real-time observations not only to SuomiNet but also to other research… more
Date: October 10, 2000
Creator: Peppler, R. A.; Carr, F. H.; Ahern, J. L.; Liljegren, J. C.; Eagan, R. C. & Smith, J. J.
Partner: UNT Libraries Government Documents Department
open access

An iterative procedure for estimating areally averaged heat flux using planetary boundary layer mixed layer height and locally measured heat flux

Description: Measurements at the central facility of the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) are intended to verify, improve, and develop parameterizations in radiative flux models that are subsequently used in General Circulation Models (GCMs). The reliability of this approach depends upon the representativeness of the local measurements at the central facility for the site as a whole or on how these measurements can be interpreted so as to accurately represent increasingly large… more
Date: April 4, 2000
Creator: Coulter, R. L.; Gao, W. & Lesht, B. M.
Partner: UNT Libraries Government Documents Department
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