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 17 of 17 for “"Aerosol-cloud Interactions"”.
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Aerosol-Cloud interactions : a new perspective in precipitation enhancement
… and human activity modified the atmospheric aerosol composition and size-distribution during the last several decades. This has affected the structure and evolution of clouds, and precipitation from them. The processes and mechanisms by which clouds and precipitation are modified by changes …
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Fundamental aerosol-cloud interactions and their influence on the aerosol indirect effect on climate
The influence of anthropogenic aerosol emissions on the optical properties of clouds and the radiative forcing arising from these interactions, known as the aerosol indirect effect on climate, constitutes a fundamental uncertainty in our understanding of 2 0 th century climate change. In this …
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Characterization and modeling of aerosol-cloud interactions toward the improvement of rainfall estimation in high mountains
… models to be used in the Andes.Changes in the cloud drop size distribution ultimately capture the interplay of microphysics, dynamics, and thermodynamics in clouds. The chain of microphysical mechanisms from aerosol activation to cloud drop size distribution (CDSD) evolution during cloud …
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Correcting for bias in satellite-retrieved cloud droplet effective radius and its impact on estimates of aerosol-cloud interactions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Observations of aerosol-cloud interactions with varying vertical separation between biomass-burning aerosols and stratocumulus clouds over the South-East Atlantic
Cloud and aerosol data collected above, within and below clouds from six research flights during the ObseRvations of Aerosols above Clouds and their intEractionS (ORACLES) field campaign in September 2016 were used to determine how the microphysical properties of marine stratocumulus clouds over …
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Idealized particle-resolved large-eddy simulations to evaluate the impact of emissions spatial heterogeneity on CCN activity
Aerosol-cloud interactions remain a large source of uncertainty in climate models due to complex, nonlinear processes that alter aerosol properties and the inability to represent the full compositional complexity of aerosol populations within large-scale modeling frameworks. The spatial resolution …
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Investigations of cloud altering effects of atmospheric aerosols using a new mixed Eulerian-Lagrangian aerosol model
… composition and size-distribution of atmospheric aerosol particles over the last century. This, in turn, has altered cloud albedo, lifetime, and patterns which together are thought to exert a negative radiative forcing on the climate; these are the indirect effects of atmospheric aerosols. The …
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Effects of Aerosol on Cloud Water Path: Statistical Method a Potential Source for Divergence in Observation-based Correlative Studies
… between correlative studies involving aerosol and cloud proxies has been thought of in the past as the results of varying physical mechanisms. Although models have supported the existence of variable correlations, from an observational standpoint it is difficult to attribute with …
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Machine learning and remote sensing in the physical sciences : applications in Earth surface and atmospheric modeling.
… atmospheric systems (i. e., soil moisture and cloud formation) be accurately quantified prior to simulating water and energy transfer, where the components of flux are often difficult or impossible to observe. In this work, I employ strategies to minimize prediction uncertainty from local to …
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On the role of natural laboratories and natural experiments in elucidating cloud-aerosol-climate interactions: A story of ships, smoke, and shutdowns
Uncertainties in how airborne particles (aerosol) influence cloud reflectivity hinder our understanding of anthropogenic climate change. The study of aerosol-cloud interactions (ACI) is complicated by the difficulty of disentangling aerosol effects from other phenomena like meteorological …
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Hygroscopic growth and cloud condensation nuclei activity of fresh and chemically-aged biomass-pyrolyzed organic aerosol
… is one of the prominent contributors of organic aerosols and cloud condensation nuclei (CCN) in the atmosphere. Aerosol-cloud interactions contribute to uncertainties in estimates of climate forcing, not only because of the complexities in their initial size and chemical composition, but also …
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Aerosol-cloud-precipitation interaction based on remote sensing and cloud-resolving modeling over the Central Himalayas
… occurring from June to September. Atmospheric aerosols can influence regional and global climate through aerosol-radiation (ARI) and aerosol-cloud interactions (ACI). The study of the aerosol-precipitation relationship over the Central Himalayan region during the summer monsoon season is …
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The impact of vertical variations of cloud mircrophysics and drizzle on the angular anisotropic behavior of weighted cloud droplet effective radius
The effective radius (Re) of the cloud droplet size distribution is an Essential Climate Variable identified by the Global Climate Observing System for its important role in energy and water cycle studies. It is retrieved simultaneously with optical depth (τ) from passive satellite imagers, like …
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Improving the understanding of the influence of emissions of biogenic volatile organic compounds on climate.
… and thus radiative forcing from CH4, O3, aerosol and clouds. Recent advances in the understanding of BVOC oxidation chemistry, which reduce the oxidant depletion typically simulated with enhanced BVOCs, are considered in very few climate models and their impact on the BVOC feedback has not …
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Toward assessing the effects of aerosols on deep convection: a numerical study using the WRF-Chemistry model
As the formative agents of cloud droplets, aerosols play an undeniably important role in the development of clouds and precipitation. Few meteorological models have been developed or adapted to simulate aerosols and their contribution to cloud and precipitation processes. The Weather Research and …
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Arctic Aerosol Sources and Continental Organic Aerosol Hygroscopicity
… or indirectly, by acting as the seed upon which cloud droplets form. These clouds can then cool the earth's surface by reflecting incoming sunlight. In order to constrain the large uncertainties in predicting the ultimate effect of aerosol on climate, the sources of atmospheric particles and …