Journal article
Predicting air quality: Improvements through advanced methods to integrate models and measurements
Journal of computational physics, Vol.227(7), pp.3540-3571
2008
DOI: 10.1016/j.jcp.2007.02.024
Abstract
Air quality prediction plays an important role in the management of our environment. Computational power and efficiencies have advanced to the point where chemical transport models can predict pollution in an urban air shed with spatial resolution less than a kilometer, and cover the globe with a horizontal resolution of less than 50
km. Predicting air quality remains a challenge due to the complexity of the governing processes and the strong coupling across scales. While air quality prediction is closely aligned with weather prediction, there are important differences, including the role of pollution emissions and their associated large uncertainties. Improvements in air quality prediction require a close integration of observations. As more atmospheric chemical observations become available chemical data assimilation is expected to play an essential role in air quality forecasting. In this paper advances in air quality forecasting are discussed with an emphasis on data assimilation. Applications of the four-dimensional variational method (4D-Var) and the ensemble Kalman filter (EnKF) approach are presented and the computation challenges are discussed.
Details
- Title: Subtitle
- Predicting air quality: Improvements through advanced methods to integrate models and measurements
- Creators
- Gregory R Carmichael - University of IowaAdrian Sandu - Virginia TechTianfeng Chai - University of IowaDacian N Daescu - Portland State UniversityEmil M Constantinescu - Virginia TechYouhua Tang - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of computational physics, Vol.227(7), pp.3540-3571
- Publisher
- Elsevier Inc
- DOI
- 10.1016/j.jcp.2007.02.024
- ISSN
- 0021-9991
- eISSN
- 1090-2716
- Language
- English
- Date published
- 2008
- Academic Unit
- Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
- Record Identifier
- 9984185470302771
Metrics
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