KEYGEN SIS 2011B
Jahed Stetter
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 2011b 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.
One important improvement in the 2011b platform is in the consideration of how snow cover impacts ozone formation. Base11b uses WRF meteorology that includes SNODAS snow cover/snow depth data and versions of WRFCAMx and CAMx with specialized dynamical and chemical parameterizations for areas covered by snow. Simulation Base11b used a winter configuration for both WRF and CAMx for the months December 2010 through March 2011. The rest of the simulation year (April-Decebember 2011) used the same WRF data and the same version of CAMx as simulation Base11a.
Oil and gas emissions for the Williston Basin in Montana and the Great Plains Basin in the Dakotas are missing from simulation Base11b. The IWDW generated Base11b_v2 CAMx and CMAQ-ready emissions that include the missing Montana/Dakotas oil and gas sources. While the Base11b_v2 emissions data have been QA'd, they have not been run through an air quality model by the IWDW.
When ordering the Base11b Modeling Platform from the IWDW, the distribution package includes both the standard (v6.10) and winter version of CAMx and WRFCAMx. To reproduce the WAQS Base11b simulation, the winter configuration should only be used for December 2010 though March 31, 2011.
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.
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