Atmospheric Water Isotopic Observations across National Ecological Observatory Network

Stable isotopes provide robust information on the structure, function, and processes of ecological systems, including hydrologic cycling. To provide publicly available continental-scale data, H2O isotopic observations (δ18O and δD) in atmosphere, precipitation, lake and stream have been incorporated as key data products in the National Ecological Observatory Network (NEON). This poster focuses on the atmospheric water vapor component at NEON’s terrestrial sites nation-wide. With inlets positioned at multiple tower heights, this array of isotopic water vapor measurements - from the ground level through the ecosystem canopy and above the canopy to the mixed layer - provides an understanding of the water vapor storage as well as the local water cycling pathway in the vertical dimension. Here, we present the profile system design, current state of the data products, extracting tools to work with the downloaded - stable isotope data, and outline challenges and future enhancements.