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in creator/contributor: "Chin, H.S."  
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Final Report on California Regional Wind Energy Forecasting Project:Application of NARAC Wind Prediction System

Description: Wind power is the fastest growing renewable energy technology and electric power source (AWEA, 2004a). This renewable energy has demonstrated its readiness to become a more significant contributor to the electricity supply in the western U.S. and help ease the power shortage (AWEA, 2000). The practical exercise of this alternative energy supply also showed its function in stabilizing electricity prices and reducing the emissions of pollution and greenhouse gases from other natural gas-fired pow… more
Date: July 26, 2005
Creator: Chin, H S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Overview of an Urban Canopy Parameterization in COAMPS

Description: The Coupled Atmosphere/Ocean Mesoscale Prediction System (COAMPS) model (Hodur, 1997) was developed at the Naval Research Laboratory. COAMPS has been used at resolutions as small as 2 km to study the role of complex topography in generating mesoscale circulation (Doyle, 1997). The model has been adapted for use in the Atmospheric Science Division at LLNL for both research and operational use. The model is a fully, non-hydrostatic model with several options for turbulence parameterization, cloud… more
Date: February 9, 2006
Creator: Leach, M J & Chin, H S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling of High-altitude Atmospheric Dispersion Using Climate and Meteorological Forecast Data

Description: The overall objective of this study is to provide a demonstration of capability for importing both high altitude meteorological forecast and climatological datasets from NRL into the NARAC modeling system to simulate high altitude atmospheric droplet release and dispersion. The altitude of release for the proposed study is between 60 and 100km altitude. As either standard climatological data (over a period of 40 years) or daily meteorological forecasts can drive the particle dispersion model, w… more
Date: March 30, 2005
Creator: Glascoe, L G & Chin, H S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COAMPS Application to Global and Homeland Security Threat Problems

Description: Atmospheric dispersion problems have received more attention with regard to global and homeland security than their conventional roles in air pollution and local hazard assessment in the post 9/11 era. Consequently, there is growing interest to characterize meteorology uncertainty at both low and high altitudes (below and above 30 km, respectively). A 3-D Coupled Ocean Atmosphere Prediction System (COAMPS, developed by Naval Research Laboratory; Hodur, 1997) is used to address LLNL's task. The … more
Date: September 14, 2004
Creator: Chin, H S & Glascoe, L G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Further Evaluation of an Urban Canopy Parameterization using VTMX and Urban 2000 Data

Description: Almost two-thirds of the U.S. population live in urbanized areas occupying less than 2% of the landmass. Similar statistics of urbanization exists in other parts of the world. With the rapid growth of the world population, urbanization appears to be an important issue on environmental and health aspects. As a result, the interaction between the urban region and atmospheric processes becomes a very complex problem. Further understanding of this interaction via the surface and/or atmosphere is of… more
Date: June 4, 2004
Creator: Chin, H S & Leach, M J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Impact of WRF Physics and Grid Resolution on Low-level Wind Prediction: Towards the Assessment of Climate Change Impact on Future Wind Power

Description: The Weather Research and Forecast (WRF) model is used in short-range simulations to explore the sensitivity of model physics and horizontal grid resolution. We choose five events with the clear-sky conditions to study the impact of different planetary boundary layer (PBL), surface and soil-layer physics on low-level wind forecast for two wind farms; one in California (CA) and the other in Texas (TX). Short-range simulations are validated with field measurements. Results indicate that the foreca… more
Date: February 24, 2010
Creator: Chin, H S; Glascoe, L; Lundquist, J & Wharton, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Impacts of WRF Physics and Measurement Uncertainty on California Wintertime Model Wet Bias

Description: The Weather and Research Forecast (WRF) model version 3.0.1 is used to explore California wintertime model wet bias. In this study, two wintertime storms are selected from each of four major types of large-scale conditions; Pineapple Express, El Nino, La Nina, and synoptic cyclones. We test the impacts of several model configurations on precipitation bias through comparison with three sets of gridded surface observations; one from the National Oceanographic and Atmospheric Administration, and t… more
Date: July 22, 2009
Creator: Chin, H S; Caldwell, P M & Bader, D C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

REGIONAL-SCALE WIND FIELD CLASSIFICATION EMPLOYING CLUSTER ANALYSIS

Description: The classification of time-varying multivariate regional-scale wind fields at a specific location can assist event planning as well as consequence and risk analysis. Further, wind field classification involves data transformation and inference techniques that effectively characterize stochastic wind field variation. Such a classification scheme is potentially useful for addressing overall atmospheric transport uncertainty and meteorological parameter sensitivity issues. Different methods to cla… more
Date: June 17, 2004
Creator: Glascoe, L G; Glaser, R E; Chin, H S & Loosmore, G A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of an Urban Canopy Parameterization in a Mesoscale Model

Description: A modified urban canopy parameterization (UCP) is developed and evaluated in a three-dimensional mesoscale model to assess the urban impact on surface and lower atmospheric properties. This parameterization accounts for the effects of building drag, turbulent production, radiation balance, anthropogenic heating, and building rooftop heating/cooling. USGS land-use data are also utilized to derive urban infrastructure and urban surface properties needed for driving the UCP. An intensive observati… more
Date: March 18, 2004
Creator: Chin, H. S.; Leach, M. J.; Sugiyama, G. A.; Leone, J. M. Jr.; Walker, H.; Nasstrom, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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