Background Air Quality Modeling Results

CAMx Base 2011 US Background Simulation

We ran a CAMx sensitivity simulation derived from the 3SAQS 2011 Base version A CAMx (CAMx_3SAQS_Base11a) configuration to estimate background air quality in the U.S. The CAMx 2011 U.S. Background simulation (CAMx_3SAQS_Base11a_USBG) is an emissions sensitivity in which all anthropogenic emissions sources in the U.S. are removed. The only emissions included in the USBG simulation include:

• Canadian and Mexican anthropogenic sources
• Domain-wide biogenic sources
• Domain-wide wildfires (prescribed and ag fires are excluded)
• Domain-wide windblown dust
• Seasalt
• Lightning NOx