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Physical Sciences and Mathematics Commons™
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- Aerosols (3)
- Atmosphere (3)
- Radar (3)
- Agriculture (2)
- Atmospheric science (2)
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- Remote sensing (2)
- Safety (2)
- Severe weather (2)
- Tornado (2)
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- Calibration scans (1)
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- Climate change (1)
- Climatology (1)
- Cloud microphysics (1)
- Differential reflectivity (1)
- Earth (1)
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- Heterogeneous ice nucleation (1)
- INP (1)
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- Indiana (1)
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Articles 1 - 11 of 11
Full-Text Articles in Physical Sciences and Mathematics
The Effects Of Wildfire Aerosol Emissions On Air Quality, Emma Braun, Audrey Shirley
The Effects Of Wildfire Aerosol Emissions On Air Quality, Emma Braun, Audrey Shirley
The Journal of Purdue Undergraduate Research
No abstract provided.
Characterizing Differential Reflectivity Calibration Dependence On Environmental Temperature Using The X-Band Teaching And Research Radar (Xtrra): Looking For A Relationship Between Temperature And Differential Reflectivity Bias, Emma Miller
The Journal of Purdue Undergraduate Research
Calibration scans are important for the maintenance of data and the quality of the information that radars output. In this study we looked for a temperature dependency in a full year’s worth of differential reflectivity (ZDR) calibration scan data collected by the X-band Teaching and Research Radar (XTRRA) located near the Purdue University campus. In a vertically pointing calibration scan, the radar scans the drops from below while rotating. From this angle, the overall shape will be circular, which corresponds to a ZDR value of approximately 0 dB. To process the data for the year 2021, a Python script was …
Clouds In The Ancient Lunar Atmosphere: Water Ice Nucleation On Aerosol Simulants, Mariana C. Aguilar
Clouds In The Ancient Lunar Atmosphere: Water Ice Nucleation On Aerosol Simulants, Mariana C. Aguilar
The Journal of Purdue Undergraduate Research
Today’s moon is vastly different from what it was 3 billion years ago. At that time, it was home to a collisional atmosphere formed through massive amounts of volcanism, releasing enough subsurface gas to sustain surface pressures of up to 1 kPa. Observations of our solar system have taught us that all dense atmospheres are host to clouds and aerosols, and we expect the Moon’s to be no different. Knowing when, where, and under what conditions cloud particles form is important for understanding the evolution of the lunar atmosphere, how it reacted to temperature gradients, and how it cycled volatiles. …
Polarimetric Radar And Vhf Lightning Observations In A Significantly Tornadic Supercell, Jacob Bruss
Polarimetric Radar And Vhf Lightning Observations In A Significantly Tornadic Supercell, Jacob Bruss
The Journal of Purdue Undergraduate Research
No abstract provided.
Agricultural Aerosols: The Impact Of Farming Activity On Ice Nucleating Particles, Joseph Robinson
Agricultural Aerosols: The Impact Of Farming Activity On Ice Nucleating Particles, Joseph Robinson
The Journal of Purdue Undergraduate Research
Farming activities cause particles such as soil dust and plant material to be emitted into the air. Some of these aerosols can become ice nucleating particles (INPs), serving as seeds for ice and mixed-phase clouds. While there have been ground-based studies of these particles in the western Great Plains and a single air-based study in Indiana, there is a distinct lack of ground-based studies in the Midwest. In Indiana, over two-thirds of the state is farmland, with over 75% of land in Tippecanoe County used for agriculture. Despite farming being such an essential part of life in Indiana, the connection …
Automated Detection And Characterization Of Mesocyclones In X-Band Radar Observations, Raychel E. Nelson
Automated Detection And Characterization Of Mesocyclones In X-Band Radar Observations, Raychel E. Nelson
The Journal of Purdue Undergraduate Research
No abstract provided.
The Effects Of Climate Change On The Vertical Structure Of Severe Weather Environments, Isaac Davis
The Effects Of Climate Change On The Vertical Structure Of Severe Weather Environments, Isaac Davis
The Journal of Purdue Undergraduate Research
No abstract provided.
Influence Of Atmospheric Circulation On Severe Flooding In The Atacama Desert, Jonathan Degraw
Influence Of Atmospheric Circulation On Severe Flooding In The Atacama Desert, Jonathan Degraw
The Journal of Purdue Undergraduate Research
No abstract provided.
High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner
High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner
The Journal of Purdue Undergraduate Research
Following the August 13, 2011, Indiana State Fair stage collapse tragedy, caused by a wind gust from an approaching thunderstorm, Purdue University enforced a wind speed restriction of 30 mph (13 m s-1) for tents at outdoor events. During these events, volunteers stand outside with handheld anemometers, measuring and reporting when the wind speeds exceed this limit. In this study, we report testing of a new system to automate high-wind alerts based on observations from a Doppler radar, the X-band Teaching and Research Radar (XTRRA), near Purdue’s campus. XTRRA scans over campus at low elevations approximately every 5 minutes. Using …
Climatological Changes: Meteorological Parameters Affecting The Spatial Redistribution Of U.S. Tornadoes, Ashley Dicks
Climatological Changes: Meteorological Parameters Affecting The Spatial Redistribution Of U.S. Tornadoes, Ashley Dicks
The Journal of Purdue Undergraduate Research
Climatological changes in the environments of key meteorological parameters that affect Significant Tornado Days (SigTorDs) have been determined for two active tornado regions defined as Box α and Box β, centered, respectively, over Oklahoma and Alabama and their respective environs. The North American Regional Reanalysis data was selected for 1980–2013, providing two successive 17-year periods corresponding to the last 34 years of previous research findings that focused on the aforementioned regions. This data record also corresponds to an increasing surface air temperature trend for the continental United States. Period I (1980–1996) and Period II (1997–2013) defined the years of changing …
Do Wind Turbines Affect Weather Conditions?: A Case Study In Indiana, Meghan F. Henschen, Brittany Herrholtz, Lacey Rhudy, Kathryn Demchak, Brian Doogs, Joshua Holland, Erik Larson, Johnny Martin, Matthew Rudkin
Do Wind Turbines Affect Weather Conditions?: A Case Study In Indiana, Meghan F. Henschen, Brittany Herrholtz, Lacey Rhudy, Kathryn Demchak, Brian Doogs, Joshua Holland, Erik Larson, Johnny Martin, Matthew Rudkin
The Journal of Purdue Undergraduate Research
Wind turbines are becoming increasingly widespread in the United States as the world looks for cleaner sources of energy. Scientists, policymakers, and citizens have strong opinions regarding the positive and negative effects of wind energy projects, and there is a great deal of misinformation about wind energy circulating on the Web and other media sources. The purpose of this study is to gain a better understanding of how the rotation of hundreds of turbines can influence local weather conditions within a wind farm and in the surrounding areas. This experiment measures temperature, atmospheric pressure, wind speed, wind direction, relative humidity, …