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2011b Modeling Platform Description

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July 22, 2015

The Western Air Quality Study’s 2011b modeling platform and individual components as described below are released for use in regional air quality modeling studies by the Western Air Quality Study cooperating agencies for use in their studies, and for external users approved by the cooperators.

The 2011b platform is suitable for regional studies of warm season ozone. Studies of: 1) cold season ozone formation; 2) particulate matter, visibility, and deposition, in general; and 3) decisions about which global model boundary conditions to apply should be undertaken only with knowledge and understanding of the limitations on model performance discussed in the 2011a platform documentation.

Version B of the 2011 modeling (2011b) platform improves specific model performance issues discovered in the 2011a platform. All 2011b modeling data and results are available through the Western / 3-State Data Warehouse Data Request page.

Description

The 2011b platform consists of data and software for simulating year 2011 air quality over a modeling domain focused on the states of Colorado, Utah, and Wyoming. The 3SAQS_2011a Modeling Protocol was used to guide the WAQS 2011b modeling.

Model performance evaluation products for simulation 2011b will be posted as they become available.

The table below lists the 2011b air quality modeling platform components. These components cover only the input data to the chemistry-transport models. For information on data further up the processing chain, such as the emissions inventories used as inputs to SMOKE, refer to the Wiki pages for the different components.

TypeOptionSourceDescriptionNotes/References
Modeling Software
 CAMx v6.10ENVIRONChemistry-transport model configured with CB6r2 photochemistrywww.camx.com
 WRF v3.5.1NOAARegional climate model configured for simulating meteorology over the Inter-mountain Westwww.wrf-model.org
 SMOKEv3.5.1UNC-IEEmissions processor for preparing emissions inventory and ancillary data for input to chemistry-transport modelswww.smoke-model.org
Emissions Data
 Emissions v2011b3SAQS2011 emissions data prepared for CAMx and CMAQ with SMOKEWAQS 2011b Emissions
Meteorology Data
 Meteorology v2011a3SAQS2011 meteorology data estimated with WRF and prepared for CAMx with WRFCAMxThis WRF simulation includes a wintertime O3 configuration to improve the representation of cold air pools
WAQS 2011b Meteorology
Evaluation report
Initial and Boundary Condition Data
 MOZART ICBCsNOAA/3SAQS2011 Initial/Boundary Conditions from NOAA global GEOS5 MOZART simulations; prepared for CAMx with MZ2CAMx; fine and coarse mode dust and sea salt removed.While the ozone and inorganic PM model performance with the MZ BC's was generally acceptable in simulation Base2011a (see 3SAQS CAMx B11a MPE report), the total PM2.5 concentrations were too high. The 3SAQS modeling team removed the dust and sea salt from the MOZART (MZ) boundary conditions to mitigate CAMx total PM2.5 model performance problems.
Wiki
Other Input Data
 Ozone ColumnsNASADaily ozone column data processed for CAMx using the utility AHOMAPv4Total Ozone Mapping Spectrometer/Ozone Monitoring Instrument2
 Chemistry ParametersENVIRONCAMxv6.10 chemistry parameters files for CB6r2 and aerosol module CF 9
 LanduseENVIRONNALC data merged with Leaf Area Index data using ArcGIS macros, Perl, and Fortran  
 Total UV columnsENVIRONDaily photolysis rates calculated using TUV v4.8Average values for typical snow cover. These data do not simulate the more reflective white snow that typically occurs during winter high ozone events in southwest Wyoming and the Uinta Basin in Utah.7
Model Performance
 Air Quality ObservationsN/AN/AList of aerometric data used to evaluation the 2011 CAMx and CMAQ simulations2011 Observational Data
 Meteorology MPE reportN/A3SAQSReport detailing the methods and results of determining the quality of the 3SAQS 2011 WRF modeling2011 WRF MPE Report
 Air Quality MPE reportN/A3SAQSWAQSReport detailing the methods and results of determining the quality of the 3SAQSWAQS 2011 air quality modeling2011Coming CAMx MPE ReportSoon
 Evaluation glossaryN/A3SAQSWAQSGlossary of Evaluation Products 
Output Data
 CAMx Base11a_MZBCBase11b3SAQSWAQSOutput data from a 2011 36/12/4-km domain CAMx simulation with MOZART boundary conditionsWiki8
 CAMxCMAQ Base11a_GCBCBase11b3SAQSWAQSOutput data from a 2011 36/12/4-km domain CAMx simulation with GEOS-Chem boundary conditionsWiki8
 CAMx Base11a_AM3BC3SAQSOutput data from a 2011 36/12/4-km domain CAMx simulation with AM3 boundary conditionsNot yet available 
 CMAQ Base11a_GCBC3SAQS4-km domain only CMAQ simulation with BC'sMOZART derivedboundary from CAMx simulation Base11a2conditionsIn progress8
 CAMx Base20a_11Base25a_113SAQSWAQSOutput data from a 2011-based 20202025 36/12/4-km domain CAMx simulation with MOZART boundary conditions; note that there will not be a Base2011a projection simulation that uses GEOS-Chem or hybrid boundary conditions data.AttainmentComing Test5Soon