AIMS Shambley Creek Dissolved Gas Data (AIMS_SE_WHR_MIMS)

This study was conducted in the Shambley Creek research watershed (outlet location: 32.98410915, -88.01334337) on privately owned property in Greene County (AL, USA). The watershed drains a non-perennial unnamed tributary to Shambley Creek, and contains 0.70 km^2 of coniferous forest managed for silviculture in the East Gulf Coastal Plain physiographic section. Located near Eutaw, AL, the watershed spans an elevation range from 63 to 94 m above sea level, and is a tributary to the Sipsey River (within the larger Mobile-Tombigbee basin). The region has a humid subtropical climate, with mean daily January and July air temperatures of 7.3°C and 27.4°C respectively, and mean annual precipitation of 1,350 mm/yr.

This resource specifically includes the Membrane Inlet Mass Spectrometer (MIMS) dissolved gas seasonal (approach 2) and synoptic (approach 3) sample datasets collected in our Shambley Creek research watershed, including Argon (Ar), Oxygen (O2), Nitrogen (N2), N2:Ar ratio, and O2:Ar ratio. We collected gas MIMS samples on six different occasions from March 24, 2022 to January 22, 2024 at seven distributed sites (approach 2). The final data tab includes averaged data for N2:Ar (unitless), O2:Ar (unitless), N2 (uM), O2 (uM), and Ar (uM), with standard deviations. Average NAs indicate MIMS dissolved gas samples were not run or that samples were missing.