Browsing by Author "Zhang, Renyi"
Now showing items 21-40 of 72
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Fan, Jiwen (2009-05-15)This work investigates the effects of anthropogenic aerosols on deep convective clouds and the associated radiative forcing in the Houston area. The Goddard Cumulus Ensemble model (GCE) coupled with a spectral-bin microphysics ...
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Zhao, Jun (2009-05-15)Aerosol particles have profound impacts on human health, atmospheric radiation, and cloud microphysics and these impacts are strongly dependent on particle sizes. However, formation and growth of atmospheric particles are ...
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Marrero Ortiz, Wilmarie (2018-03-29)Atmospheric aerosols profoundly impact human health, visibility, the ecosystem, and the climate. Some aerosols are directly emitted, but a majority are formed in the atmosphere by the oxidation of gaseous precursors. ...
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Wang, Zhenglu (2018-05-09)Exposure to fine particular matter (PMv2.5) is associated with various adverse health outcomes, including cardiovascular disease, cancer and respiratory related diseases. Reducing exposure assessment errors for epidemiologic ...
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Park, Chang Hyoun (2011-08-08)A tall tower flux measurement setup was established in metropolitan Houston, Texas, to measure trace gas fluxes from both anthropogenic and biogenic emission sources in the urban surface layer. We describe a new relaxed ...
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Hale, Martin C (2014-05-08)Energy and trace gas fluxes were measured from anthropogenic and biogenic emission sources in the Houston urban surface layer. Air sampling from a tall tower platform began in 2008 and continued through April 2013. A relaxed ...
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Secrest, Jeremiah R (2019-05-22)In this study, research has been conducted to investigate the formation and impacts of aerosols in the atmosphere. Experimental studies were performed to elucidate the role of organic functionality in the nucleation and ...
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Levitt, Nicholas Paul (2009-05-15)Atmospheric particulates have been known to act as cloud condensation nuclei (CCN) and therefore their presence can indirectly affect important processes such as global radiation balance through cloud formation. Soot ...
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Turner, Brittany (2015-04-29)Secondary organic aerosols (SOA) are derived from non- and semivolatile oxidation products of volatile organic compounds (VOCs), and are suggested to cause adverse effects on human health, visibility, and climate. Organic ...
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Cruz Quinones, Miguel (2011-02-22)Soot aerosols are known to be an important atmospheric constituent. The physical and chemical properties of soot allows it to act as a precursor of gas-surface heterogeneous reactions, providing active sites for the reduction ...
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Lal, Vinita (2012-02-14)Epoxides have been recently identified as one of the intermediate species in the gas phase oxidation of alkenes. This study investigates the reaction of isoprene oxide and alpha-pinene oxide with sulfuric acid to identify ...
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Suter, Katie Ann (2012-10-19)Heterogeneous freezing processes in which atmospheric aerosols act as ice nuclei (IN) cause nucleation of ice crystals in the atmosphere. Heterogeneous nucleation can occur through several freezing mechanisms, including ...
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Taylor, Nathan Frank (2017-04-11)Interactions with atmospheric water are central to aerosol impacts on health, climate, and visibility. Many atmospheric aerosol constituents take up water in sub-saturated conditions, enhancing their impact on climate and ...
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Kim, Hahkjoon (Texas A&M University, 2006-08-16)This dissertation focuses on the photodissociation dynamics of stratospheric bromine and chlorine radical intermediates (BrO, ClO) along with reservoir species (ClONO2), which are known to play an important role at ...
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Wang, Peng (2018-05-06)Atmospheric fine particles and ozone (O3) are correlated with adverse health effects, visibility reduction, and climate change. In recent decades, China has suffered from the record-breaking severe haze event and elevated ...
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Pan, Bowen (2019-11-26)This dissertation investigated the impacts of natural and anthropogenic aerosols on Atlantic tropical cyclones by combining observational analyses and numerical modeling. The objectives of the research were to assess the ...
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Li, Jingyi (2012-02-14)A photochemical mechanism is a very important component of an air quality model, which simulates the change of pollutant concentrations due to chemical reactions in the air. The accuracy of model prediction is directly ...
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Mirrielees, Jessica Aileen (2018-06-12)The concentrations of cloud condensation nuclei (CCN) modulate cloud properties, rainfall location and intensity, and climate forcings. This work assesses uncertainties in CCN measurements and the apparent hygroscopicity ...
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Investigating the Impacts of Atmospheric Aerosols on Cloud Formation Relevant to Weather and Climate Mckeown, Megan Alexandra (2014-12-10)In recent years, human induced air pollution has significantly increased, with profound atmospheric implications from local, regional, to global scales [Stocker et al., 2013]. This impact has sparked active research on the ...
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Li, Guohui (2009-05-15)In this dissertation, a two-moment bulk microphysical scheme with aerosol effects is developed and implemented into the Weather Research and Forecasting (WRF) model to investigate the aerosol-cloud interaction. Sensitivities ...