References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-12-5603-2012

Regional air-quality forecasting for the Pacific Northwest using MOPITT/TERRA assimilated carbon monoxide MOZART-4 forecasts as a near real-time boundary condition

Herron-Thorpe

F. L.

¹ Mount

G. H.

¹ Emmons

L. K.

² Lamb

B. K.

¹ Chung

S. H.

¹ Vaughan

J. K.

Department of Civil & Environmental Engineering, Washington State University, USA

National Center for Atmospheric Research, Boulder, CO, USA

28 06 2012

12 12 5603 5615

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys.net/12/5603/2012/acp-12-5603-2012.html

The full text article is available as a PDF file from http://www.atmos-chem-phys.net/12/5603/2012/acp-12-5603-2012.pdf

Results from a regional air quality forecast model, AIRPACT-3, were compared to AIRS carbon monoxide column densities for the spring of 2010 over the Pacific Northwest. AIRPACT-3 column densities showed high correlation (R > 0.9) but were significantly biased (~25%) with consistent under-predictions for spring months when there is significant transport from Asia. The AIRPACT-3 CO bias relative to AIRS was eliminated by incorporating dynamic boundary conditions derived from NCAR's MOZART forecasts with assimilated MOPITT carbon monoxide. Changes in ozone-related boundary conditions derived from MOZART forecasts are also discussed and found to affect background levels by ± 10 ppb but not found to significantly affect peak ozone surface concentrations.

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