Project Grant 0856274

This National Science Foundation Project Grant of $622,435 supports research into stratosphere-troposphere exchange of ozone and its changes over time. Funded under the Geosciences program within the NSF Division of Atmospheric and Geospace Sciences, the award will examine observational estimates of ozone exchange based on satellite data through 2025. The University of Washington will calculate ozone exchange using methodology accounting for tropical upwelling and extra-tropical downwelling....

This Project Grant award from the National Science Foundation (NSF) Division of Polar Programs (CFDA 47.078) provides $814,685 to the University of California Irvine (UC Irvine) to analyze molecular hydrogen (H2) in an ice core from Summit, Greenland. The goal is to reconstruct atmospheric changes in H2 over the past millennium, which will establish a baseline to assess how human activities have influenced atmospheric H2 since the preindustrial era. The research involves drilling a new ice core,...

This three-year, $294,092 National Science Foundation project grant will fund research at the University of Rochester to improve understanding of open ocean methane sources and sinks. The research aims to determine dominant biological sources of methane in surface waters through modeling of methane concentration data. The model will quantify methane supply from seafloors in low-oxygen zones and whether this methane is consumed before escaping to the atmosphere. The optimized global model will...

The National Science Foundation (NSF) Division of Polar Programs awarded a $532,387 Project Grant to Oregon State University to investigate past atmospheric methane variability using stable isotopes in Antarctic ice cores. The research project aims to develop new laboratory methods for measuring hydrogen isotopes in methane and use the chemical composition of methane to understand changes in atmospheric methane levels during past climate transitions, including periods when the climate was as...

This Project Grant award from the National Science Foundation (NSF) Division of Ocean Sciences under the Geosciences program (CFDA 47.050) provides $517,526 to The Trustees of Columbia University in the City of New York to quantify uncertainties in air-sea CO2 flux variability and the background ocean carbon sink, and determine data requirements to reduce these uncertainties. Key objectives include: 1) Quantifying regional-scale uncertainties in the background ocean carbon sink using a...

The National Science Foundation (NSF) awarded a $705,728 Project Grant under the Geosciences program (CFDA 47.050) to the Trustees of Columbia University. This collaborative research project seeks to significantly increase understanding of the marine source of carbonyl sulfide (OCS), a trace gas that provides insight into the global carbon cycle. The research combines direct marine flux measurements, dissolved OCS and isotopic measurements, and data assimilation/modeling. The project involves an...

This $292,831 project grant awarded by the National Science Foundation's Geosciences program aims to simultaneously measure nitrous oxide (N2O) production and consumption in ocean environments with varying dissolved oxygen levels. The research will be conducted by Arizona State University and will: 1) quantify N2O production and consumption rates as dissolved oxygen decreases from oxic to anoxic conditions, 2) determine the degree to which N2O consumption in anoxic zones balances increased...

The National Science Foundation (NSF) Division of Atmospheric and Geospace Sciences awarded a $892,703 Project Grant to The Ohio State University to develop a framework using modeling approaches to interpret climate variability from ice core delta oxygen-18 in low-latitude and tropical glaciers. The researchers will examine water isotopes in surface precipitation and throughout the atmospheric column in the tropical Andes and northwestern Tibetan Plateau regions. The goal is to improve...

This $293,010 National Science Foundation project grant under the Geosciences program (CFDA 47.050) will fund research at The Ohio State University to develop novel isotope proxies that improve understanding of Earth's climate and carbon cycle dynamics at the onset of the Late Paleozoic Ice Age from 350 to 290 million years ago. The grantee will pair calcium and clumped isotope systems to test hypotheses regarding diagenetic influences on stable carbon isotopes used as proxies for carbon...

This Project Grant award of $389,764 from the National Science Foundation's Geosciences Program (CFDA 47.050) will fund a collaborative research effort to study the marine source of carbonyl sulfide (OCS) and its contribution to the global carbon cycle. The project team, comprised of researchers from the U.S., Germany, and Israel, will conduct a multi-faceted analysis including: (1) direct marine flux measurements of OCS; (2) dissolved measurements of OCS and its isotopologues and precursor...