Project Grant 2505215
- The National Science Foundation (NSF) awarded a $192,386 Project Grant through its Geosciences program (CFDA 47.050) to the University of Arizona for a 3-year collaborative research project to reconstruct tropical rainfall patterns over the last 200 years. The project aims to use stable oxygen isotopes measured in tree ring cellulose from sites across Central and South America to study variations in the position and width of the Intertropical Convergence Zone and understand how these changes...
- This Project Grant award of $376,962.00 from the National Science Foundation's (NSF) Geosciences program (CFDA 47.050) to the University of Tennessee will support research to reconstruct the long-term history of drought in the Caribbean using tree-ring analysis and climate model experiments. The goal is to investigate the mechanisms driving multi-year droughts in the circum-Caribbean region. The research will involve collecting and analyzing samples of the endemic Hispaniolan pine tree to...
- The National Science Foundation (NSF) awarded a $562,254 Project Grant under the Geosciences program (CFDA 47.050) to The Trustees of Columbia University in the City of New York. The purpose of this 3-year grant, with an award date of February 1, 2024, is to use stable oxygen isotopes measured in tree-ring cellulose across the tropical Americas to reconstruct wet season precipitation variability over the past 200 years. This research aims to gain insights into large-scale tropical climate...
- This $398,984 Project Grant award, provided by the National Science Foundation's Geosciences Program (CFDA 47.050), supports research to quantify the biophysical, physiological, and phenological impacts of increasing carbon dioxide (CO2) levels on vegetation and their effects on future climate change. The research utilizes the Community Earth System Model to examine the direct impacts of CO2 fertilization and stomatal closure, as well as the indirect effects of a longer growing season, on...
- This National Science Foundation award under the Geosciences program (CFDA 47.050) provides $381,192 to the University of Missouri System from July 1, 2022 to June 30, 2025. The funding will support development of tree ring chronologies from juniper, pine, and taxodium trees within and near the Great Plains to reconstruct past seasonal precipitation, soil moisture balance, and drought over the region from the Medieval period to present. Researchers will produce five gridded reconstructions at...
- This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) aims to reduce uncertainties in tree-ring records of wet extremes to better interpret past climate and plan for future changes. The total funding amount is $324,677, with an award date of July 1, 2024 and an ultimate completion date of June 30, 2027. The key products and services to be delivered under this grant include: Using dendrometers (instruments that record tree growth in real-time) to...
- This $211,743 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) aims to reduce uncertainties in tree-ring records of wet extremes to aid interpretations of past climate and plan for future changes. The primary objectives are to: Use dendrometers to measure how tree growth responds to changes in precipitation frequency, intensity, and timing at sites in the AmeriFlux network. Reconstruct wet extremes of precipitation from previously collected tree-ring...
- This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will provide $354,194 from August 2025 through July 2028 to investigate long-term transitions between grasslands and shrublands in New Mexico. The project will use geochemical data from ancient soils to study the relationship between climate factors like heat, dryness, and the expansion of shrublands. It will also provide professional development for educators and hands-on training for undergraduate...
- The National Science Foundation (NSF) awarded a $1,276,110 Project Grant under the Geosciences program (CFDA 47.050) to the University Corporation for Atmospheric Research (UCAR) to develop the Isotope-Enabled Community Earth System Model (ICESM). This grant, awarded on September 1, 2025, aims to solve key challenges in modeling the Earth's water cycle by incorporating stable water isotopes into an advanced Earth system model. The project will leverage observational data from field campaigns,...
- This Project Grant from the National Science Foundation Division of Atmospheric and Geospace Sciences, under the Geosciences federal grant program (CFDA 47.050), provides $360,000 to develop long tree-ring chronologies within and along the boundaries of the Great Plains region. The researchers, led by Columbia University, will use these tree-ring data to reconstruct past drought and moisture conditions over 500-1000 years, creating gridded reconstructions of spring/summer precipitation indices...
This National Science Foundation (NSF) Geosciences Program (CFDA 47.050) Project Grant award of $202,000 will be used to reconstruct vapor pressure deficit (VPD) in the southwestern United States over the past 500 years using tree-ring oxygen isotopes. The project aims to characterize VPD variability, identify the mechanisms driving VPD changes, and determine if the recent decline in VPD is anomalous. The research will involve updating and extending existing tree-ring width and wood density data, as well as measuring oxygen isotopes on the samples to reconstruct VPD. The findings will be compared to reanalysis data and climate model output. The project provides an opportunity for undergraduate student participation and aligns with the Geosciences Program's goal of expanding scientific knowledge about the integrated Earth system through basic research in atmospheric, earth, and ocean sciences.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| Not listed | $202.0k | 8/28/25 |