Nitrous oxide emissions from eroding high-center polygons in an Arctic coastal wetland, 2021. ...

• Main Author: Hashemi, Joshua
• Format: Dataset
• Language: unknown
• Published: Zenodo 2023
• Subjects: nitrous oxide; Arctic tundra; greenhouse gas flux; carbon dioxide; Arctic; Barrow; Tundra; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.8391856; https://zenodo.org/record/8391856

This data contains nitrous oxide (N 2 O) and carbon dioxide (CO 2 ) fluxes from eroding polygon features located in a coastal wetland near Utqiaġvik, Alaska on the Barrow Environmental Observatory (BEO). Static chamber fluxes were measured with a Gasmet GT5000 Terra Fourier transform infrared (FTIR) greenhouse gas analyzer (GGA) and a clear, cylindrical polycarbonate chamber (50 cm height and 20cm diameter) in a closed system at a 1Hz sampling rate. The FTIR GGA is capable of measuring concentrations by scanning the full infrared spectrum and calculating the concentrations of each gas in the sample based on its absorption.Chamber collars were made of PVC (15 cm height and 20 cm diameter) and installed 3 days prior to greenhouse gas measurements at a depth of 10 cm. Fluxes were measured at 30 locations – 10 vegetated replicates and 20 unvegetated soil replicates – whenever weather permitted during July 2021 for a total of 263 measurements. Ancillary measurements included soil temperature, bulk density, thaw ...