This National Science Foundation (NSF) Project Grant award, funded under the Geosciences program (CFDA 47.050), will support a two-year time-series study of size-fractionated aerosol samples collected near Bermuda in the North Atlantic Ocean. The $571,384 award to the University of Delaware aims to: 1) analyze temporal variations in the size distribution of aerosol trace elements like iron, 2) quantify lower and upper estimates of potentially bioavailable iron, 3) investigate the chemical...
This Project Grant award from the National Science Foundation (NSF) Geosciences Program (CFDA 47.050) supports a collaborative research effort to study the ocean iron cycle in the subtropical and equatorial Pacific Ocean. The $480,149 award, which began on April 1, 2025 and will run through March 31, 2028, will fund researchers at the University of South Florida and the University of Hawaii to measure iron isotopes in seawater samples collected during recent GEOTRACES expeditions. By combining...
This Project Grant award for $540,281 from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research project between U.S. and U.K. scientists to better understand the linkages between the oceanic cycles of iron and carbon. The research aims to characterize the "colloidal shunt" mechanism, whereby dissolved iron forms aggregates with organic carbon to create particulate matter that sinks out of the upper water column. The project will...
This three-year project grant from the National Science Foundation Division of Ocean Sciences provides $197,659 to the University of Georgia Research Foundation to characterize the composition, scavenging efficiency, and bioavailability of size fractionated particles through collaborative research under the official federal grant program titled "Geosciences" (CFDA #47.050). The research aims to strengthen understanding of the integrated Earth system by supporting basic research in...
This National Science Foundation (NSF) Geosciences program Project Grant, awarded to Georgia Tech Research Corporation, will investigate the biogeochemical and physical processes regulating the benthic flux and speciation of iron from non-upwelling continental margins. The $880,688 award, effective October 1, 2023 through September 30, 2026, aims to quantify the flux of iron from sediments to the water column in the western North Atlantic Ocean and western Mediterranean Sea. The research team...
This Project Grant award for $197,103, provided by the National Science Foundation's Geosciences Program (CFDA 47.050), supports a collaborative research effort to better understand the linkages between the oceanic cycles of iron and carbon. The project will integrate field observations from the Bermuda Atlantic Time-series Study (BATS) and Cape Verde Ocean Observatory regions with targeted experimental studies and advanced ocean biogeochemical modeling. Key areas of focus include examining...
This Project Grant award, provided by the National Science Foundation's Geosciences Program (CFDA 47.050), will fund observational and modeling research to address critical gaps in understanding the production and distribution of giant sea salt aerosols (GSSA) in the atmosphere. The $202,000 award, running from June 1, 2025 to May 31, 2027, will enable a postdoctoral researcher to: Use a specialized instrument to make observations of GSSA during research cruises from Hawaii, constructing a...
This National Science Foundation (NSF) Project Grant, awarded under the Geosciences program (CFDA 47.050), provides $499,806 to Bigelow Laboratory for Ocean Sciences to conduct collaborative research on the role of the "colloidal shunt" in the ocean's iron and carbon cycles. The project aims to better understand the mechanisms and linkages between iron and organic carbon pools in the oceans, and to predict their sensitivity to future environmental and climatic changes. The work will...
This three-year, $696,898 National Science Foundation project grant under the Geosciences program (CFDA 47.050) supports collaborative research titled "COLLABORATIVE RESEARCH: US GEOTRACES GP17-OCE: SIZE-FRACTIONATED PARTICLE COLLECTION AND ANALYSIS FROM ULTRA-OLIGOTROPHIC TO ANTARCTIC WATERS" led by the University of Georgia Research Foundation. The Foundation will conduct size-fractionated particle collection and analysis from ultra-oligotrophic to Antarctic waters to strengthen...
This $369,916 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research project between the University of South Florida and the University of Hawaii. The primary objectives are to: 1) use iron isotopes as a tracer to determine the relative supply of dust, sediment, and hydrothermal-derived iron to the subtropical and equatorial Pacific Ocean; 2) investigate how microorganisms fractionate iron isotopes during iron uptake and how...