Iron cycle interactions with hydrological dynamics reduce methane production in a simulated Arctic soil: Modeling Archive

• Main Authors: Sulman, Benjamin, Yuan, Fengming, O'Meara, Teri, Graham, David, Gu, Baohua, Herndon, Elizabeth, Zheng, Jianqiu
• Format: Dataset
• Language: English
• Published: Next Generation Ecosystems Experiment - Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US); NGEE Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States) 2020
• Subjects: 54 Environmental Sciences; Arctic; Barrow; Nome; north slope; permafrost; Seward Peninsula; Tundra; Alaska
• Online Access: https://dx.doi.org/10.5440/1814844; https://www.osti.gov/servlets/purl/1814844/

This Modeling Archive is in support of an NGEE Arctic publication ?Iron cycle interactions with hydrological dynamics reduce methane production in a simulated Arctic soil?.We simulated biogeochemical cycling in arctic soils using the PFLOTRAN geochemical model combined with measurements from previous NGEE Arctic incubations of polygonal permafrost soils in northern Alaska (Zheng et al., 2018). Simulated iron cycling, carbon dioxide production, and methane production were compared with incubation measurements and the parameterized model was then used to simulate coupled iron and carbon cycling over repeated oxic-anoxic cycles at different levels of initial soil pH.This archive contains simulation code, model output, and analysis code for PFLOTRAN simulations.All scripts are python except the batch script for submitting multiprocessor jobs. Note that the model also requires compiled versions of the Alquimia interface and the NGEE Arctic fork of the PFLOTRAN geochemical simulator. Current version of this model code (including alquimia version): https://github.com/bsulman/REDOX-PFLOTRAN/tree/d6befe29576a04d695238859f582cc21c8f14165. Current version of compatible PFLOTRAN code: https://github.com/bsulman/pflotran-elm-interface/tree/5567ca0680a24cebfb93845b1c3fbfde601b8117. The Output directory contains eight data files in netCDF format generated by the model. The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a 10-year research effort (2012-2022) to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy?s Office of Biological and Environmental Research.The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska.Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy?s Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).