Dataset associated with "Volatile organic compounds and ozone at four national parks in the southwestern United States"

Whole air canister samples were collected at four national parks in the southwestern United States. The parks are Carlsbad Caverns National Park (CAVE) in New Mexico, Grand Canyon National Park (GRCA) in Arizona, Great Basin National Park (GRBA) in Nevada, and Joshua Tree National Park (JOTR) in California. Sampling took place at each site from 4 April 2017 to 14 September 2017. In addition to these measurements, a short intensive study was conducted in and around CAVE in September 2017. This intensive included measurements from nearby Guadalupe Mountains National Park (GUMO) and Bitter Lake National Wildlife Refuge. Whole air samples were analyzed for 56 individual volatile organic compounds using a five-channel, three-GC (gas chromatograph) analytical system, which employed three flame ionization detectors (FIDs), one electron capture detector (ECD) and one mass spectrometer.