Dataset for: Partitioning methane sources and emissions along the US Cascadia margin reveals the dominant influence of localized and ephemeral features

<p dir="ltr">This dataset accompanies the manuscript "Partitioning methane sources and emissions along the US Cascadia margin reveals the dominate influence of localized and ephemeral features".</p><p dir="ltr">'Dugan2026_environmental_data.csv' includes measurements of dissolved methane concentration, stable carbon isotopic composition of surface waters, as well as depth, salinity, water temperature, chlorophyll and nitrate.</p><p dir="ltr">'Dugan2026_gridded_flux.nc' contains upscaled products of air-sea disequilibrium and diffusive flux to the atmosphere over three time periods; (1) May-June 2019, (2) Neutrally influenced conditions (DOY 146-150 2019), and (3) Upwelling influenced conditions (DOY 151-159 2019).</p><p dir="ltr">Note: to view and plot the associated netCDF (.nc) file, we recommend <a href="giss.nasa.gov/tools/panoply/download/" target="_blank" rel="noreferrer">Panoply</a>, a free tool developed by NASA.</p><p><br></p><p><br></p>