Skip to main content
U.S. flag

An official website of the United States government

Dot Gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Stuart A. McKeen

Partner Affiliation
Publon ID


Corresponding Articles: 7

Stuart A. Mc Keen authored and/or contributed to the following articles/publications.

On-Line Chemistry within WRF: Description and Evaluation of a State-of-the-Art Multiscale Air Quality and Weather Prediction Model

In this chapter we describe the Weather Research and Forecasting (WRF) model as it is coupled to online chemistry. This model now includes many atmospheric chemistry routines covering biogenic emissions, deposition, photolysis, chemical mechanisms. In addition, several atmospheric aerosol routines and a biomass burning model were added to WRF. T...

Stuart A. McKeen

3DVAR chemical data assimilation in WRF/Chem forecasts during CalNEX

Air quality forecasts are typically initialized using chemical species concentrations obtained from the previous day's forecasts with no regard to the observations. This approach generally leads to better forecasts compared to those initialized with chemical species concentrations obtained from climatology. Data assimilation is an essential part...

Stuart A. McKeen

Evaluation of WRF-Chemistry air quality forecasts produced during CalNex-2010

CalNex-2010 was a significant air quality field study conducted by National Oceanic and Atmospheric Administration (NOAA), the California Air Resources Board (ARB), and academic researchers. It occurred from May through June of 2010. Several aircraft and a research vessel (Atlantis) along with ground observation site collected spatial and tempor...

Stuart A. McKeen

Application of dynamic linear regression to improve the skill of ensemble-based deterministic ozone forecasts

Forecasts from seven air quality models and surface ozone data collected over the eastern USA and southern Canada during July and August 2004 provide a unique opportunity to assess benefits of ensemble-based ozone forecasting and devise methods to improve ozone forecasts. In this investigation, past forecasts from the ensemble of models and hour...

Stuart A. McKeen

The emergence of numerical air quality forecasting models and their application

Over the past decade there has evolved an increasing interest by the public in the U.S. and other nations in the day-to-day air quality conditions to which they are exposed. Driven by the increasing awareness of the health aspects of air pollution exposure, especially by subpopulations most sensitive such as children and the elderly, short-term ...

Stuart A. McKeen

Online versus offline air quality modeling on cloud-resolving scales

Computational advances now allow air quality forecast models to fully couple the meteorology with chemical constituents within a unified modeling system – online – that allows two-way interactions. The more common approach is the offline system, which only allows one-way coupling from the meteorology – sampled at fixed time intervals – to the ch...

Stuart A. McKeen


Stuart A. McKeen