CAMx Base 2011 version A GEOS-Chem Boundary Condition Simulation

Introduction

We ran a CAMx sensitivity simulation derived from the 3SAQS 2011 Base version A CAMx (CAMx_3SAQS_Base11a) configuration in which we replaced the MOZART Initial and Boundary Conditions (ICBCs) with GEOS-Chem results. The CAMx 2011 GEOS-Chem ICBC sensitivity simulation (CAMx_3SAQS_Base11a_GCBC) is a boundary condition sensitivity to evaluate the change in model performance resulting from ICBCs downscaled from alternative Global Chemical-Transport Models (GCTMs). Other than the ICBC data, the configurations of the Base11a and Base11a_GCBC simulations are exactly the same.

The Base11a_GCBC simulation was instrumented to use the CAMx PM Source Apportionment Tool (PSAT) for tracking O3 and dust species from the five model boundaries (N, S, E, W, and top). Cursory model performance evaluation results, comparison to the Base11a simulation, and the PSAT O3 and dust tracers are presented below.

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Results

Table 1. Animations of Daily Max Concentrations and Base11a_GCBC - Base11a differences in Daily Max Concentrations (12-km domain)

Month	O3	NO2	CO	PM2.5	NH3	SO2
January	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
February	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
March	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
April	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
May	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
June	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
July	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
August	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
September	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
October	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
November	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff
December	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff	Daily Max Diff

Scatter Plots (4-km Domain)

Daily Max O3 Base11a_GCBC vs Base11a
Daily Max MDA8 O3 Base11a_GCBC vs Base11a

Monthly Average NMB/Concentration Plots (4-km Domain)

CO at AQS Sites
MDA8 O3 at AQS Sites
MDA8 O3 at CASTNet Sites
Total PM2.5 at IMPROVE Sites
EC at IMPROVE Sites
OC at IMPROVE Sites
SO4 at IMPROVE Sites
NO3 at IMPROVE Sites
NH4 at IMPROVE Sites
Total PM2.5 at CSN Sites
EC at CSN Sites
OC at CSN Sites
SO4 at CSN Sites
NO3 at CSN Sites
NH4 at CSN Sites

Table 2. Animations of Daily Max Concentrations for O3 and Dust Boundary Tracers

Month	Total BCs	West	East	North	South	Top
January	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
February	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
March	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
April	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
May	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
June	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
July	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
August	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
September	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
October	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
November	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust
December	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust	O3 Dust

Table 3. Boundary conditions plots

Month	O3	Ox (O3+NO+NO2+PAN)	Coarse Dust (CCRS)	Fine PM Other (FPRM+FCRS)
January	Plot	Plot	Plot	Plot
February	Plot	Plot	Plot	Plot
March	Plot	Plot	Plot	Plot
Apr	Plot	Plot	Plot	Plot
May	Plot	Plot	Plot	Plot
June	Plot	Plot	Plot	Plot
July	Plot	Plot	Plot	Plot
August	Plot	Plot	Plot	Plot
September	Plot	Plot	Plot	Plot
October	Plot	Plot	Plot	Plot
November	Plot	Plot	Plot	Plot
December	Plot	Plot	Plot	Plot

Table 4. MOZART Concentration Plots

Month	Coarse Dust	Fine Dust
Annual Max	Plot	Plot
January Daily Max	Plot	Plot
February Daily Max	Plot	Plot
March Daily Max	Plot	Plot
April Daily Max	Plot	Plot
May Daily Max	Plot	Plot
June Daily Max	Plot	Plot
July Daily Max	Plot	Plot
August Daily Max	Plot	Plot
September Daily Max	Plot	Plot
October Daily Max	Plot	Plot
November Daily Max	Plot	Plot
December Daily Max	Plot	Plot