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RISThe Impact of Nudging in the Meteorological Model for Retrospective Air Quality Simulations. Part II: Evaluating Collocated Meteorological and Air Quality Observations
Publisher: American Meteorological Society
Abstract: For air quality modeling, it is important that the meteorological fields that are derived from meteorological models reflect the best characterization of the atmosphere. It is well known that the accuracy and overall ...
The Impact of Nudging in the Meteorological Model for Retrospective Air Quality Simulations. Part I: Evaluation against National Observation Networks
Publisher: American Meteorological Society
Abstract: It is common practice to use Newtonian relaxation, or nudging, throughout meteorological model simulations to create ?dynamic analyses? that provide the characterization of the meteorological conditions for retrospective ...
A Heuristic Study on the Importance of Anisotropic Error Distributions in Data Assimilation
Publisher: American Meteorological Society
Abstract: A challenging problem in numerical weather prediction is to optimize the use of meteorological observations in data assimilation. Even assimilation techniques considered ?optimal? in the ?least squares? sense usually involve ...
Examining Interior Grid Nudging Techniques Using Two-Way Nesting in the WRF Model for Regional Climate Modeling
Publisher: American Meteorological Society
Abstract: his study evaluates interior nudging techniques using the Weather Research and Forecasting (WRF) model for regional climate modeling over the conterminous United States (CONUS) using a two-way nested configuration. ...
Does Nudging Squelch the Extremes in Regional Climate Modeling?
Publisher: American Meteorological Society
Abstract: n important question in regional climate downscaling is whether to constrain (nudge) the interior of the limited-area domain toward the larger-scale driving fields. Prior research has demonstrated that interior nudging can ...
Implementation of an Urban Canopy Parameterization in a Mesoscale Meteorological Model
Publisher: American Meteorological Society
Abstract: An urban canopy parameterization (UCP) is implemented into the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5) to improve meteorological fields in the urban ...
An Observation-Based Investigation of Nudging in WRF for Downscaling Surface Climate Information to 12-km Grid Spacing
Publisher: American Meteorological Society
Abstract: revious research has demonstrated the ability to use the Weather Research and Forecasting model (WRF) and contemporary dynamical downscaling methods to refine global climate modeling results to a horizontal grid spacing ...
Using National Air Quality Forecast Guidance to Develop Local Air Quality Index Forecasts
Publisher: American Meteorological Society
Abstract: The National Air Quality Forecast Capability (NAQFC) currently provides next-day forecasts of ozone concentrations over the contiguous United States. It was developed collaboratively by NOAA and Environmental Protection ...
Linking the Eta Model with the Community Multiscale Air Quality (CMAQ) Modeling System to Build a National Air Quality Forecasting System
Publisher: American Meteorological Society
Abstract: NOAA and the U.S. Environmental Protection Agency (EPA) have developed a national air quality forecasting (AQF) system that is based on numerical models for meteorology, emissions, and chemistry. The AQF system generates ...