Science Inventory

UPDATE ON DEVELOPMENT OF NUDGING FDDA FOR ADVANCED RESEARCH WRF

Citation:

STAUFFER, D., A. DENG, J. DUDHIA, AND T. L. OTTE. UPDATE ON DEVELOPMENT OF NUDGING FDDA FOR ADVANCED RESEARCH WRF. Presented at 2005 Joint WRF/MM5 Workshop, Boulder, CO, June 27 - 30, 2005.

Impact/Purpose:

The objectives of this task are to continue development and improvement of EPA's mesoscale (regional through urban scale) air quality modeling systems, such as the Community Multiscale Air Quality (CMAQ) model, as air quality management and NAAQS implementation tools. This task focuses on needed research and development of air quality models targeted for a major CMAQ model release in FY08. Model development for a broad scope of application is envisioned. For example, CMAQ will need to be able to simulate air quality feedbacks to meteorology and climate as well as intercontinental transport. The 2008 release of CMAQ is timed to coincide with EPA/OAR's and the states' needs for an improved model for assessments of progress (mid-course corrections) in the post-SIP submittal timeframe.

Description:

A nudging-based four-dimensional data assimilation (FDDA) system is being developed for the Weather Research and Forecasting (WRF) Model. This effort represents a collaboration between The Pennsylvania State University (i.e., Penn State), the National Center for Atmospheric Research (NCAR), the U.S. EPA, and NOAA. The WRF nudging is based, in part, on the system that was developed for the Penn State/NCAR Mesoscale Model (MM5), but it has been modified to use the WRF state equations, variables, and horizontal grid system. Progress on the development was discussed in the presentation.

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Product Published Date: 06/28/2005
Record Last Revised: 06/21/2006
Record ID: 137306

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL EXPOSURE RESEARCH LABORATORY

ATMOSPHERIC MODELING DIVISION

ATMOSPHERIC MODEL DEVELOPMENT BRANCH