Theses and Dissertations - Atmospheric Science
Recent Submissions
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Atmospheric and air quality implications of C2-C5 alkane emissions from the oil and gas sector
Emissions of C2-C5 alkanes from the U.S. oil and gas sector have changed rapidly over the last decade. This dissertation quantifies the role of the oil and gas sector on light alkane emissions and abundances at local, ... -
Productivity and phenology in a process-driven carbon cycle model
The carbon cycle is a major source of uncertainty in predicting future climate, especially with regard to changes in the terrestrial biosphere. One obstacle in predicting the sources and sinks of the carbon cycle is ... -
New post-processing paradigm? : improving high-impact weather forecasts with machine learning, A
High-impact weather comes in many different shapes, sizes, environments, and storm types, but all pose threats to human life, property, and the economy. Because of the significant societal hazards inflicted by these events, ... -
Estimating spatiotemporal trends in wildfire smoke concentrations in the western United States
The United States (US) has seen significant improvements in seasonal air quality over the past several decades. However, particulate air quality in summer over the majority of the western US has seen little improvement in ... -
Assessing the impacts of microphysical and environmental controls on simulated supercell storms
Supercell thunderstorms are some of the most dangerous single-cell storms on the planet. These storms produce many hazards to life and property, including tornadoes, floods, damaging straightline winds, strong updrafts and ... -
On the environments and dynamics of nocturnal mesoscale convective systems
The 2015 Plains Elevated Convection at Night (PECAN) field campaign was motivated by unanswered questions about key processes in elevated mesoscale convective systems (MCSs) and the difficulty in accurately forecasting ... -
Simplified approach to understanding boundary layer structure impacts on tropical cyclone intensity, A
The relationship between tropical cyclone boundary layer (TCBL) structure and tropical cyclone (TC) intensity change is difficult to understand due to limited observations of the complex, non-linear interactions at both ... -
Eyewall replacement cycle of Hurricane Matthew (2016) observed by Doppler radars
An eyewall replacement cycle (ERC) can cause significant changes to the intensity and structure of a tropical cyclone, but the physical mechanisms involved in the ERC process are not fully understood due to a lack of ... -
Effects of near-source coagulation of biomass burning aerosols on global predictions of aerosol size distributions and implications for aerosol radiative effects
Biomass burning is a significant global source of aerosol number and mass. In fresh biomass burning plumes, aerosol coagulation reduces aerosol number and increases the median size of aerosol size distributions, impacting ... -
Assessment of numerical weather prediction model re-forecasts of atmospheric rivers along the West Coast of North America
Atmospheric rivers (ARs) - narrow corridors of high atmospheric water vapor transport - occur globally and are associated with flooding and maintenance of the regional water supply. Therefore, it is important to improve ... -
Evaluation of OCO-2 small-scale XCO2 variability using lidar retrievals from the ACT-America flight campaign
With eight 1.25 x 3 kilometer footprints across its swath and nearly 1 million observations of column-mean carbon dioxide concentration (XCO2) per day, the Orbiting Carbon Observatory (OCO-2) presents exciting possibilities ... -
Climate and health impacts of particulate matter from residential combustion sources in developing countries
Globally, close to 2.8 billion people lack access to clean cooking technology, while 1.8 billion people lack access to electricity altogether. As a means to generate energy for residential tasks, it is common in many ... -
Impact of upper tropospheric temperatures and radiation on idealized tropical cyclones, The
Potential intensity (PI) theory predicts that the tropopause temperature acts as a powerful constraint on tropical cyclone (TC) intensity and structure. The physical mechanisms by which the upper tropospheric thermal ... -
Atmospheric reactive nitrogen in Rocky Mountain National Park
The Front Range urban corridor in Colorado, located east of Rocky Mountain National Park (RMNP), includes a variety of urban sources of nitrogen oxides, while high emissions of ammonia are found in agricultural sources on ... -
Objective analysis of extreme precipitation events in diverse geographic regions
Extreme precipitation events are a focus of much research in the atmospheric science community today. These events are extraordinarily impactful to society, damaging critical infrastructure and in the worst cases taking ... -
Micrometeorological studies of a beef feedlot, dairy, and grassland : measurements of ammonia, methane, and energy balance closure
Ammonia emissions from concentrated animal feeding operations (CAFOs; most of which are beef feedlots) near the Colorado Front Range are suspected to be a large regional input of reactive nitrogen which has been found to ... -
Investigating contributions to elevated surface ozone in the Colorado Front Range during summer 2015
Tropospheric ozone (O3) is a significant pollutant in the Colorado Front Range. The northern Front Range metropolitan area (NFRMA) has exceeded the U.S. EPA national ambient air quality standard for O3 since 2008. While ... -
Lightning channel locations, LNOx production, and advection in anomalous and normal polarity thunderstorms
Tropospheric ozone is a powerful greenhouse gas and OH precursor, thus understanding its sources is important. Its production is also widely studied in atmospheric science today as global climate modelers attempt to estimate ... -
Investigations of the uncertainties associated with HID algorithms and guiding input to a novel, synthetic polarimetric radar simulator
A methodology for model evaluation against observations is presented. With the advent of polarimetric radars, the need to produce simulated radar observables from model has also become apparent, in order to directly compare ... -
Volatile organic compound concentrations and the impacts of future oil and natural gas development in the Colorado Northern Front Range
Recent advances in unconventional extraction of oil and natural gas (O&NG) have caused an increase in the number of wells in the Colorado Northern Front Range (CNFR) which has doubled Colorado's natural gas production over ...
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