Project Grant 2414969
- This $163,796 Project Grant award from the National Science Foundation's (NSF) Integrative Activities program (CFDA 47.083) will fund collaborative research to improve understanding and forecasting of quasi-linear convective systems (QLCSs) - lines of thunderstorms that can produce high-impact weather such as tornadoes and extreme straight-line winds. The research team will create a comprehensive database of QLCS events using advanced weather radar data and machine learning techniques. This...
- This $1.1 million project grant from the National Science Foundation's Geosciences program (CFDA 47.050) will fund research at Pennsylvania State University from April 2022 through March 2025 to improve understanding of supercell thunderstorms and tornado formation. The research team will analyze well-observed tornadic storms using innovative observation and simulation techniques to address fundamental questions about tornado rotation, the role of surface friction and baroclinically-generated...
- This three-year, $846,782 Project Grant from the National Science Foundation's Geosciences program (CFDA 47.050) will fund research to investigate the effect of future climate change on severe convective storms. The awardee, the University of Washington, will combine self-organized maps and idealized storm-scale simulations to examine how severe thunderstorms and tornadoes may change in a warmer climate. Researchers will first use data-based methods with climate model simulations to understand...
- This Project Grant award from the National Science Foundation's (NSF) Geosciences Program (CFDA 47.050) to Embry-Riddle Aeronautical University, Inc. in the amount of $374,070 aims to better understand how different types of precipitation in tropical cyclones impact their maximum sustained wind speeds. The 4-year project will use airborne Doppler radar data and numerical weather prediction models to examine how precipitation modes, such as convection and stratiform rain, perturb the kinematic...
- This Project Grant award from the National Science Foundation Division of Atmospheric and Geospace Sciences provides $678,911 to the University of Oklahoma under the Geosciences federal grant program (CFDA 47.050) to analyze data collected during the 2019 and 2022 Targeted Observation by Radars and UAS of Supercells field campaigns. The University will apply advanced modeling techniques to observational data on supercell thunderstorms to improve understanding of why some develop tornadoes...
- This Project Grant award from the National Science Foundation's Geosciences program (CFDA 47.050) will support research by Texas Tech University to investigate the predictability of severe weather events, such as tornadoes, hail, and flooding, under current and future climate conditions. The $380,904 award, effective from September 1, 2023 to August 31, 2026, will involve creating and analyzing large datasets of numerical weather model forecasts to understand how and why the predictability of...
- This $817,212 National Science Foundation project grant supports research at Pennsylvania State University to improve understanding and forecasting of downdrafts in deep convection. The three-year award under the NSF Geosciences program (CFDA 47.050) aims to advance fundamental knowledge of the processes contributing to vertical air motions in thunderstorms. Through theoretical analysis and idealized simulations, the university researchers will study the influence of atmospheric properties on...
- This three-year, $482,724 National Science Foundation project grant in the Geosciences program (CFDA 47.050) will fund foundational research at Texas A&M University to improve understanding and prediction of downdrafts in deep convection. The university will conduct theoretical analysis and idealized simulations to elucidate the influence of atmospheric properties on downdraft formation heights and intensities. Researchers will analyze simulations using novel tracer techniques and trajectory...
- This Project Grant award in the amount of $424,952 from the National Science Foundation's Geosciences Program (CFDA 47.050) will support collaborative research to study the connections between tropical heating, planetary-scale stationary waves, and extratropical storm track activity. The study, to be conducted by two Ph.D. students at Stony Brook University, aims to demonstrate how tropical deep convection and variations in zonal mean temperature gradients influence the behavior of extratropical...
- This National Science Foundation project grant of $399,905 provides funding from August 1, 2022 to July 31, 2025 under the Geosciences program (CFDA 47.050) to develop a new poloidal convection model and multi-scale description of moist circulations in tall cumulus clouds. The University of California, Davis will test and further develop the poloidal model framework to incorporate both ascending and descending air motions within convective clouds. This will allow for new understanding of cloud...
AGS-PRF: A UNIFIED CONCEPTUAL MODEL FOR THE DEVELOPMENT OF NEAR-SURFACE ROTATION IN SQUALL LINES -LINES OF THUNDERSTORMS, SOMETIMES REFERRED TO AS SQUALL LINES, ARE COMMON OCCURRENCES IN THE UNITED STATES AND ARE ACCOMPANIED BY HEAVY RAIN, HIGH WINDS, AND OCCASIONALLY TORNADOES. DETERMINING WHICH SQUALL LINES ARE LIKELY TO CONTAIN TORNADOES IS A DIFFICULT FORECAST PROBLEM, EVEN AFTER A SQUALL LINE HAS ALREADY FORMED. THIS POSTDOCTORAL RESEARCH FELLOWSHIP AWARD WILL INVESTIGATE THE ROLE OF LOW-LEVEL WINDS IN THE FORMATION OF THE CIRCULATIONS IN SQUALL LINES THAT LEAD TO TORNADOES. THE MAIN SOCIETAL IMPACT OF THE PROJECT IS THE POTENTIAL OF IMPROVED FORECASTING AND NOWCASTING OF TORNADIC EVENTS. THE PROJECT ALSO CONTRIBUTES TO AN EARLY-CAREER RESEARCHER?S CAREER DEVELOPMENT. THE DEVELOPMENT OF ROTATION WITHIN SQUALL LINES, OTHERWISE REFERRED TO AS QUASI-LINEAR CONVECTIVE SYSTEMS (QLCSS), IS A COMPLEX PHYSICAL PROBLEM. MANY THEORIES HAVE BEEN PUT FORTH TO DESCRIBE HOW THE GENESIS OF ROTATION IN QLCSS BEGINS, BUT THE SCIENTIFIC COMMUNITY HAS NOT CONSOLIDATED AROUND ANY SINGULAR MECHANISM. THE RESEARCH UNDER THIS AWARD WILL USE IDEALIZED NUMERICAL SIMULATIONS, ANALYSIS OF FIELD CAMPAIGN MEASUREMENTS, AND A SYNTHESIS OF RECENT ADVANCES ON THIS TOPIC TO ANSWER THREE CRITICAL RESEARCH QUESTIONS: 1) HOW DO VARIATIONS IN THE LOW LEVEL NEAR-STORM WIND PROFILE INFLUENCE THE WAYS IN WHICH SQUALL LINES PRODUCE INTENSE, LONG-LIVED ROTATION CLOSE TO THE SURFACE, 2) HOW DO VARIATIONS IN CONVECTIVE AVAILABLE POTENTIAL ENERGY (CAPE) MODULATE THE MESOVORTEXGENESIS PROCESS ACROSS THE LOW-LEVEL SHEAR SPECTRUM, AND 3) HOW DOES THIS NEAR-STORM ENVIRONMENTAL EVOLUTION IMPACT THE MAINTENANCE AND ROTATION OF QLCSS, AND DOES THE RELATIVE IMPORTANCE OF VORTEXGENESIS MECHANISMS EVOLVE IN TIME? THIS AWARD REFLECTS NSF'S STATUTORY MISSION AND HAS BEEN DEEMED WORTHY OF SUPPORT THROUGH EVALUATION USING THE FOUNDATION'S INTELLECTUAL MERIT AND BROADER IMPACTS REVIEW CRITERIA.- SUBAWARDS ARE NOT PLANNED FOR THIS AWARD.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| Not listed | $102.0k | 5/21/25 | ||
| Not listed | $100.0k | 5/23/24 |