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RISA Variable Sky-View Platform for the Measurement of Ultraviolet Radiation
Publisher: American Meteorological Society
Abstract: One of the more difficult tasks confronting atmospheric researchers today is the acquisition of long-term radiometric measurements that encapsulate variability in the sky hemisphere as well as time. High quality spatial ...
An Anisotropy Correction Method for All-Sky Measurements of Diffuse UV-B Erythemal Irradiance
Publisher: American Meteorological Society
Abstract: Occulting disk or shadowband arrangements are often applied to both spectral and broadband sensors in order to retrieve the total diffuse irradiance. However, there is difficulty in the application of a suitable diffuse ...
Climatology of Winter Orographic Precipitation over the Subtropical Central Andes and Associated Synoptic and Regional Characteristics
Publisher: American Meteorological Society
Abstract: inter orographic precipitation over the Andes between 30° and 37°S is examined using precipitation gauges in the mountains and adjacent lowlands. Because of the limited number of precipitation gauges, this paper focuses ...
The Energy Balance of an Urban Canyon
Publisher: American Meteorological Society
Abstract: This study investigates the energy exchanges occurring within an urban canyon. It considers not only the energy balances of each of the canyon component surfaces (walls and floor), but also the balance of the canyon system ...
Piezo Barkhausen Emission as an Indicator of the Fatigue Limit of Steel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The fatigue properties of two variants of AISI 1018 steel samples were measured in a series of 33 experiments using new kinds of magnetic diagnostics. An MTS810 servohydraulic test machine applied sinusoidal fully reversed ...
An Observational and Numerical Study of Blocking Episodes near South America
Publisher: American Meteorological Society
Abstract: European Centre for Medium-range Weather Forecasts analyses during June 1985 are used to characterize the flow in the South America sector during a typical blocking episode. Numerical experiments are performed using a ...
Validation of a Construction Process Using a Structural Health Monitoring Network
Publisher: American Society of Civil Engineers
Abstract: A structural health monitoring (SHM) network was installed during the construction of a 56-story frame-wall concrete building with a height of 196 m. The SHM network recorded the vibrations produced by ambient, construction, ...
Hybrid Particle Swarm Optimization and K-Means Analysis for Bridge Clustering Based on National Bridge Inventory Data
Publisher: American Society of Civil Engineers
Abstract: Because of budget constraints for maintaining highway bridges in the United States, it is necessary to accurately monitor bridge structures so that repair and rehabilitation strategies can be performed. In this paper, an ...
Comparison of Leapfrog, Smolarkiewicz, and MacCormack Schemes Applied to Nonlinear Equations
Publisher: American Meteorological Society
Abstract: The MacCormack scheme is a finite-difference scheme widely used in the aerospace simulations. It is a two-step algorithm, and contains a small amount of implicit numerical diffusion that makes it numerically stable without ...
Application of the MacCormack Scheme to Atmospheric Nonhydrostatic Models
Publisher: American Meteorological Society
Abstract: In a previous paper, the authors discussed the numerical properties of the MacCormack scheme, a finite-difference technique widely used in aerospace simulations. Here the authors report results of its application to the ...