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 8 of 8 for “"Cloud Droplet Number Concentration"”.
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Black carbon mixing state impacts on aerosol activation investigations using particle-resolved model simulations
… However, BC particles can also act as CCN, form cloud droplets and hence contribute to a cooling impact on climate. Both the optical properties and the CCN properties of BC particles depend on the BC mixing state, i.e. which other species are present within one BC-containing particle. The BC …
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Fundamental aerosol-cloud interactions and their influence on the aerosol indirect effect on climate
… 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 dissertation, we investigate the …
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Cloud condensation nuclei in western Colorado: observations and model predictions
Variations in the warm cloud‐active portion of atmospheric aerosols, or cloud condensation nuclei (CCN), have been shown to impact cloud droplet number concentration and subsequently cloud and precipitation processes. This issue carries special significance in western Colorado where a significant …
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Assessing impact of the sulfate aerosol first indirect effect on tropical cyclone activity
… the first AIE (aerosol enhancement of cloud reflectivity) through parameterization of cloud droplet number, radius, and optical depth. Cloud droplet number is parameterized using an empirical scheme, while the radius is determined from cloud liquid water content and number concentration …
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Investigating the impacts of entrainment on nucleation scavenging of black carbon particles through particle-resolved simulations
… to a positive radiative forcing. The optical and cloud condensation nuclei properties of the aerosol depend on the per-particle chemical species composition, or mixing state. Challenges arise in determining black carbon climate effects because the mixing state changes during the particles’ …
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Improving the understanding of the influence of emissions of biogenic volatile organic compounds on climate.
… 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 been …
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South Asian summer monsoon variability: a modelling study with the atmospheric regional climate model HIRHAM5
… mimics a scenario of higher atmospheric aerosol concentrations over South Asia addresses a current issue of large uncertainty: the role aerosols play in suppressing monsoon rainfall and hence in triggering breaks. To study the indirect aerosol effects the cloud droplet number concentration was …
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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