This $396,079 Project Grant awarded by the National Science Foundation (NSF) Geosciences program (CFDA 47.050) aims to investigate how bacteria and biofilm growth in river sediments regulate the formation of low-oxygen microzones that produce the potent greenhouse gas nitrous oxide. The University of California, Davis (UC Davis) will perform sediment column experiments, microfluidic studies, and numerical simulations to characterize the spatio-temporal dynamics of these anoxic microzones and...
This Project Grant award from the National Science Foundation's Geosciences program (CFDA 47.050) supports research by Boise State University to investigate how microbial activity and fluid flow dynamics in river sediments influence the production and emission of the potent greenhouse gas nitrous oxide. The $189,234 award will fund experiments and numerical simulations to determine the spatial and temporal patterns of low-oxygen microzones that facilitate nitrous oxide generation. This work aims...
This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) provides $114,165 to the University of New Mexico from April 1, 2025 to March 31, 2027 to develop a novel condensable carrier gas system for isotope laser spectroscopy analysis. The project aims to substitute nitrogen gas with nitrous oxide (N2O) to improve the sample preparation and analysis process for measuring rare oxygen isotopes, which have applications in fields like paleoclimatology and...
This Project Grant award of $325,875.00 from the National Science Foundation's Division of Polar Programs (CFDA 47.078) supports research at the University of Alaska Fairbanks (UAF) to assess the contribution of permafrost-derived greenhouse gases to global warming since the last glacial maximum. The project combines data on permafrost thaw records, paleoclimate evidence, and ice core-based greenhouse gas concentrations to better understand the effects of warming and permafrost instability on...
This three-year project grant from the National Science Foundation Division of Ocean Sciences, titled "COLLABORATIVE RESEARCH: QUANTIFYING NITROUS OXIDE SOURCES ACROSS AN OXYGEN GRADIENT IN THE NORTHERN BENGUELA UPWELLING SYSTEM," provides $467,135 in funding to Florida State University from September 2021 through August 2024. The project aims to strengthen understanding of integrated Earth systems by quantifying sources of the greenhouse gas nitrous oxide across oxygen concentration...
This National Science Foundation (NSF) Geosciences program project grant award of $550,590 to the University of South Carolina (USC) aims to investigate nitrous oxide (N2O) cycling in the sediments of the Northern Benguela Upwelling System off the west coast of Africa. The multidisciplinary research team, including geochemists and microbial ecologists, will determine the net sediment-water column flux of N2O, the rates of N2O production and consumption by different processes, and the influence...
This $582,005 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports research by The Trustees of Princeton University to investigate nitrous oxide (N2O) consumption in the surface ocean. The research aims to determine the factors that control or stimulate N2O reduction in surface waters and characterize the microbes responsible for the process. Specifically, the investigators will perform 15N tracer incubations to measure the rate of N2O reduction...
Colorado State University was awarded a $199,724 Project Grant from the National Science Foundation under the Geosciences program (CFDA 47.050) for the period of July 1, 2021 through June 30, 2024. The grant will support collaborative research examining new roles for reactive oxygen species in mediating carbon fluxes at the terrestrial-aquatic interface. Specifically, the funding will enable investigation of how reactive oxygen species produced during microbial decomposition in soils and...
The University of Massachusetts Dartmouth received a $336,586 Project Grant from the National Science Foundation's (NSF) Geosciences program (CFDA 47.050) to conduct collaborative research on deciphering the mechanisms of marine nitrous oxide (N2O) cycling. The research team, which includes one postdoctoral investigator, two graduate students, and several undergraduates, will use stable isotopes, molecular markers, and in-situ rate measurements to study N2O production and consumption in the...
The National Science Foundation Division of Polar Programs awarded South Dakota State University a $380,435 project grant to conduct collaborative research on climate-induced sea-level rise, warming, and herbivory effects on vegetation and greenhouse gas emission in coastal western Alaska. This award, made under the Polar Programs (CFDA 47.078) federal grant program on February 1, 2022, will support research through January 31, 2026 that aims to strengthen understanding of fundamental...