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

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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Copyright Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License.
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Author Herron-Thorpe, F.
Mount, G.
Emmons, Louisa
Lamb, B.
Chung, S.
Vaughan, J.
Publisher UCAR/NCAR - Library
Publication Date 2012-06-28T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:51:28.541105
Metadata Record Identifier edu.ucar.opensky::articles:11691
Metadata Language eng; USA
Suggested Citation Herron-Thorpe, F., Mount, G., Emmons, Louisa, Lamb, B., Chung, S., Vaughan, J.. (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. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7j67hj6. Accessed 26 June 2025.

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