scholarly journals Decadal Evaluation of the AIRPACT Regional Air Quality Forecast System in the Pacific Northwest from 2009-2018

2021 ◽  
Author(s):  
Jordan Munson ◽  
Joseph Vaughan ◽  
Brian Lamb ◽  
Yunha Lee
Keyword(s):  
Air Quality ◽  
Pacific Northwest ◽  
Forecast System ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Regional Air Quality ◽  
Quality Forecast

scholarly journals Evaluation of a regional air quality forecast model for tropospheric NO<sub>2</sub> columns using the OMI/AURA satellite tropospheric NO<sub>2</sub> product

2009 ◽  
Vol 9 (6) ◽  
pp. 27063-27098
Author(s):  
F. L. Herron-Thorpe ◽  
J. K. Vaughan ◽  
B. K. Lamb ◽  
G. H. Mount
Keyword(s):  
Air Quality ◽  
Pacific Northwest ◽  
Urban Areas ◽  
Forecast Model ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Tropospheric No2 ◽  
Regional Air Quality ◽  
Significant Model ◽  
Quality Forecast

Abstract. Results from a regional air quality forecast model, AIRPACT-3, are compared to OMI tropospheric NO2 integrated column densities for an 18 month period over the Pacific Northwest. AIRPACT column densities were well correlated with cloud-free monthly averages of tropospheric NO2 (R=0.75) to NASA retrievals for months without wildfires, but were poorly correlated with significant model overpredictions (R=0.21) for months with wildfires when OMI and AIRPACT were compared over the entire domain. AIRPACT forecasted higher NO2 in some US urban areas, and lower NO2 in many Canadian urban areas, when compared to OMI. There are significant changes in results after spatially averaging model results to the daily OMI swath. Also, it is shown that applying the averaging kernel to model results in cloudy conditions has a large effect, but applying the averaging kernel in cloud free conditions has little effect. The KNMI and NASA retrievals of tropospheric NO2 from OMI (collection 3) are compared. The NASA product is shown to be significantly different than the KNMI tropospheric NO2 product, i.e. July 2007 (R=0.60) and January 2008 (R=0.69).

scholarly journals Evaluation of a regional air quality forecast model for tropospheric NO<sub>2</sub> columns using the OMI/Aura satellite tropospheric NO<sub>2</sub> product

2010 ◽  
Vol 10 (18) ◽  
pp. 8839-8854 ◽  
Author(s):  
F. L. Herron-Thorpe ◽  
B. K. Lamb ◽  
G. H. Mount ◽  
J. K. Vaughan
Keyword(s):  
Air Quality ◽  
Pacific Northwest ◽  
Urban Areas ◽  
Forecast Model ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Standard Product ◽  
Tropospheric No2 ◽  
Regional Air Quality ◽  
Quality Forecast

Abstract. Results from a regional air quality forecast model, AIRPACT-3, are compared to OMI tropospheric NO2 integrated column densities for an 18 month period over the Pacific Northwest. AIRPACT column densities are well correlated (r=0.75) to cloud-free (<35%) retrievals of tropospheric NO2 for monthly averages without wildfires, but are poorly correlated (r=0.21) with significant model over-predictions for months with wildfires when OMI and AIRPACT are compared over the entire domain. AIRPACT predicts higher NO2 in some northwestern US urban areas, and lower NO2 in the Vancouver, BC urban area, when compared to OMI. Model results are spatially averaged to the daily OMI swath. The Dutch KNMI (DOMINO) and NASA (Standard Product) retrievals of tropospheric NO2 from OMI (Collection-3) are compared. The NASA product is shown to be significantly different than the KNMI tropospheric NO2 product. The average difference in tropospheric columns, after applying the averaging kernels of the respective products to the model results, is shown to be larger in the summer (±50%) than winter (±20%).

A Numerical Daily Air Quality Forecast System for The Pacific Northwest

2004 ◽  
Vol 85 (4) ◽  
pp. 549-562 ◽  
Author(s):  
Joseph Vaughan ◽  
Brian Lamb ◽  
Chris Frei ◽  
Rob Wilson ◽  
Clint Bowman ◽  
...  
Keyword(s):  
Air Quality ◽  
Pacific Northwest ◽  
Forecast System ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Quality Forecast

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

2012 ◽  
Vol 12 (12) ◽  
pp. 5603-5615 ◽  
Author(s):  
F. L. Herron-Thorpe ◽  
G. H. Mount ◽  
L. K. Emmons ◽  
B. K. Lamb ◽  
S. H. Chung ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Boundary Conditions ◽  
Pacific Northwest ◽  
Forecast Model ◽  
Dynamic Boundary Conditions ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Regional Air Quality ◽  
Air Quality Forecasting

Abstract. 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.

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

2012 ◽  
Vol 12 (2) ◽  
pp. 3695-3730
Author(s):  
F. L. Herron-Thorpe ◽  
G. H. Mount ◽  
L. K. Emmons ◽  
B. K. Lamb ◽  
S. H. Chung ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Boundary Conditions ◽  
Pacific Northwest ◽  
Forecast Model ◽  
Dynamic Boundary Conditions ◽  
Air Quality Forecast ◽  
The Pacific ◽  
Regional Air Quality ◽  
Air Quality Forecasting

Abstract. 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 significant under-predictions for spring months with 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.

Numerical Regional Air Quality Forecast Tests Over the Mainland of China

2001 ◽  
pp. 1781-1786
Author(s):  
Junling An ◽  
Meiyuan Huang ◽  
Zifa Wang ◽  
Xinling Zhang ◽  
Hiromasa Ueda ◽  
...  
Keyword(s):  
Air Quality ◽  
Air Quality Forecast ◽  
Regional Air Quality ◽  
The Mainland Of China ◽  
Quality Forecast

Assessment of the quality of TROPOMI high-spatial-resolution NO2 data products

2020 ◽  
Author(s):  
Xiaoyi Zhao ◽  
Debora Griffin ◽  
Vitali Fioletov ◽  
Chris McLinden ◽  
Alexander Cede ◽  
...  
Keyword(s):  
Air Quality ◽  
High Resolution ◽  
Near Infrared ◽  
Forecast Model ◽  
Research Data ◽  
Data Product ◽  
Air Quality Forecast ◽  
Data Products ◽  
Regional Air Quality ◽  
Quality Forecast

&lt;p&gt;The TROPOspheric Monitoring Instrument (TROPOMI) on-board the Sentinel-5 Precursor satellite (launched on 13 October 2017) is a nadir-viewing spectrometer measuring reflected sunlight in the ultraviolet, visible, near-infrared, and shortwave infrared spectral ranges. The measured spectra are used to retrieve total columns of trace gases, including nitrogen dioxide (NO&lt;sub&gt;2&lt;/sub&gt;). In this study, Pandora NO&lt;sub&gt;2&lt;/sub&gt; measurements made at three sites located in or north of the Greater Toronto Area (GTA) are used to evaluate the TROPOMI NO&lt;sub&gt;2&lt;/sub&gt; data products, including the standard Royal Netherlands Meteorological Institute (KNMI) NO&lt;sub&gt;2&lt;/sub&gt; data product and a research data product developed by Environment and Climate Change Canada (ECCC) using a high-resolution regional air quality forecast model (used in the airmass factor calculation).&lt;/p&gt;&lt;p&gt;TROPOMI pixels located upwind and downwind from the Pandora sites were analyzed using a new wind-based validation method that increases the number of coincident measurements by about a factor of five compared to standard techniques. Using this larger number of coincident measurements, this work shows that both TROPOMI and Pandora instruments can reveal detailed spatial patterns (i.e., horizontal distributions) of local and transported NO&lt;sub&gt;2&lt;/sub&gt; emissions, which can be used to evaluate regional air quality changes. The TROPOMI ECCC NO&lt;sub&gt;2&lt;/sub&gt; research data product shows improved agreement with Pandora measurements compared to the TROPOMI standard tropospheric NO&lt;sub&gt;2&lt;/sub&gt; data product, demonstrating the benefit of using the high-resolution regional air quality forecast model to derive NO&lt;sub&gt;2&lt;/sub&gt; airmass factors.&lt;/p&gt;

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