Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Aerosol optical properties."”.
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Aerosol Optical Properties and the Influence of Particulate Organic Matter
… from this research on ambient and laboratory aerosols, it can be concluded that (1) presence of organic compounds (i.e., glutaric and succinic acids) decrease the hygroscopic growth of aerosol particles when compared with aerosol particles composed of pure inorganic compounds (i.e., sodium …
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Quantifying cloud chemical processes and aerosol optical properties using a particle–resolved aerosol model
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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Remote measurement of aerosol optical properties using the NOAA POES AVHRR during ACE-1, TARFOX and ACE-2
… Phase functions are parameterized using an aerosol distribution model and the ratio of radiance values measured in channels 1 and 2 of the AVHRR. Automated cloud screening and sun glint removal is included. Retrieved satellite aerosol optical depth (AOD) is compared to surface measured …
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Speciated Local Aerosol Characteristics and Radiative Forcing at a Rural Midwestern Site
In this research, physical and chemical properties of ambient aerosols were measured at a rural perturbed mid-latitude site (Bondville, IL) and used to calculate the aerosol optical properties and the resulting direct radiative forcing. Size-segregated aerosol samples were collected during the …
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Direct Aerosol Radiative Forcing Based on Optical Measurements at Contrasting, Climatically Important Sites
"To characterize direct aerosol radiative forcing of climate ( DARF), aerosol optical properties were measured at two contrasting locations, a clean marine Southern Hemisphere site (Cape Grim Tasmania) and an anthropogenically perturbed Northern Hemisphere site (Sagres, Portugal). Total light …
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Physical and Chemical Properties of Laboratory and Ambient Aerosols Related to Climate Change
… of closure when measuring and modeling aerosol optical properties as a function of RH in a laboratory and reports measured ambient aerosol optical and chemical properties for an anthropogenically perturbed continental US site from 1995 to 2000. The optical closure experiment was …
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Radiative Forcing and Climatic Impact of the Mount Pinatubo Volcanic Eruption
… and a reconstructed dataset of the Pinatubo aerosol optical properties. Composite and the Singular Value Decomposition (SVD) analyses were used to detect and separate the signals of the Pinatubo aerosol forcing and ENSO events from the observed surface air-temperature anomalies (DeltaTs) over …
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Dynamics of Atmospherically Important Triatomics in Collisions with Model Organic Surfaces
… heterogeneous chemistry of atmospheric organic aerosols. In addition to changing the chemical and physical properties of the particle, reactions with oxidizing gases may alter aerosol optical properties, with implications for the regional radiation budget and climate. Molecular beams of CO₂, NO₂ …
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Variability of aerosol and cloud optical properties and their effect on the transfer of solar irradiance in the atmosphere
This thesis is focused on the aerosols and clouds optical properties and the effects that these parameters have on the solar radiation transfer in the atmosphere. The first chapter provides a brief description of the basic concepts of radiative transfer. The radiative transfer theory is described, …
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Optical properties of light absorbing organic carbon aerosol and its mixtures at high sub-saturated humidities
… on climate has drawn attention to the role of aerosol in the earth’s climate system, because aerosols counteract the warming effect by greenhouse gases. The aerosol effect on climate is dependent on the balance between absorption and scattering of light by the particles, which are affected by …
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Improving Our Understanding of Atmospheric Aerosols and Their Climate Effects: Implications for Satellite Retrievals and GCM Simulations
… on improving our understanding of atmospheric aerosols using both observational data and model simulations. EOF analysis of Aerosol Index (AI) product from Total Ozone Mapping Spectrometer (TOMS) and Ozone Monitoring Instrument (OMI) reveals global distribution of absorbing aerosols, with major …
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Impacts of long-range transport of biomass burning on air quality in Texas.
… and (2) investigate the physical and chemical properties of transported biomass burning (BB) smoke and their impact on background air quality in Port Aransas, an industrialized coastal site in Texas. To achieve these objectives, mobile and stationary field experiments were conducted to measure …
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Applications of Deep Learning, Machine Learning, and Remote Sensing to Improving Air Quality and Solar Energy Production
… urban heterogeneity of operating conditions and aerosol optical properties, and the stability of low-cost sensors can drift or degrade over time. This work presents a simultaneous Gaussian Process regression (GPR) and simple linear regression pipeline to calibrate and monitor dense WLPMSNs on the …