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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 20 of 32 for “"Atmospheric Modeling"”.

  1. Accelerating Atmospheric Modeling Through Emerging Multi-core Technologies

    Linford, John ChristianVirginia Tech2010

    … of this power is bewildering program complexity. Atmospheric modeling is a grand-challenge problem that could make good use of these architectures if they were more accessible to the average programmer. To that end, software tools and programming methodologies that greatly simplify the …

    vt Repository record

  2. Machine learning and remote sensing in the physical sciences : applications in Earth surface and atmospheric modeling.

    Breen, Katherine Heather, 1987-Baylor University.2020

    … that the observable metrics of land and 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 …

    baylor Repository record

  3. Atmospheric Modeling for Enhancing Air Quality Prediction through the Integration of Inverse Modeling and Data-Driven Approaches

    Feng, XiaoxiaoETH Zurich2024

    ethz Repository record

  4. Scaling air quality effects from alternative jet fuel in aircraft and ground support equipment

    Donohoo-Vallett, Pearl ElizabethMassachusetts Institute of Technology2010

    … using both emissions inventory analysis and atmospheric modeling. The atmospheric modeling captures both primary particulate matter and other emissions that react in the atmosphere to form secondary particulate matter. It was found that the use of an ultra low sulfur jet fuel in aircraft gas …

    mit Repository record

  5. Analyzing Environmental Tritium Cycle for Fusion Energy and National Security

    Arias, Liliana R.Massachusetts Institute of Technology2025

    … compiled, with an emphasis on fusion reactors. Atmospheric modeling using HYSPLIT and a Gaussian Plume model is then conducted in order to better understand current and future global tritium sources and concentrations and their release pathways in the environment. Despite elevated tritium levels …

    mit Repository record

  6. Analysis of the application of collision cross sections and ion neutral reaction rates in the upper atmosphere modeling

    Romanovskaya, Irina K.Rice University2000

    … ion-neutral reaction rates) used in the upper atmospheric modeling for Earth and other planets are presented. This work gives the first complete compendium of the electron impact cross sections and ion neutral reaction rates used in aeronomic studies. This data are presented in an easy-to-use …

    rice Repository record

  7. Formation and maintenance of tropical cyclone spiral bands in idealized numerical simulations

    Perez-Betancourt, Diamilet.Massachusetts Institute of Technology2019

    … Previous hypotheses include the manifestation of atmospheric waves emanating from the TC inner core, boundary layer instabilities, and the interaction between surface cold pools and low-level vertical wind shear. Despite much effort, no consensus has yet been reached on the underlying physical …

    mit Repository record

  8. Theoretical study of electronic absorption spectra and photodissociation dynamics of atmospherically relevant molecules

    Farahani, SaraThe University of Waikato2019

    The absorption of solar radiation by atmospheric species and the corresponding photoinduced processes, define the chemistry of a planet's atmosphere. While many of these photoinduced processes and their effects are well- known, even in Earth's atmosphere there are gaps in our understanding. The …

    waikato-masters Repository record

  9. Development of a rapid global aircraft emissions estimation tool with uncertainty quantification

    Simone, Nicholas W. (Nicholas William)Massachusetts Institute of Technology2013

    … up-to-date openly available inventory for use in atmospheric modeling studies. We estimate that in 2005, scheduled civil aviation was responsible for 180.6 Tg (90% CI: 136.1-232.9 Tg) of fuel burn, equating to 155.5 Tg of CO2 as C (90% CI: 117.3-200.7 Tg) and 0.108 Tg of SOx as S (90% CI: …

    mit Repository record

  10. Topographic Influence and Atmospheric Dynamics in the Indian Wells Valley

    Uher, Erich J.2013

    … to better understand the relationships between atmospheric dynamical processes and the wind/thermal structure of the mesoscale at Indian Wells Valley. This will involve exploring relationships linking theoretical meteorology in complex terrain and advanced high resolution atmospheric modeling in …

    unr Repository record

  11. Land conversion in Amazonia and Northern South America : influences on regional hydrology and ecosystem response

    Knox, Ryan GaryMassachusetts Institute of Technology2013

    … Demography Model) is compbined with an atmospheric model (Brazilian Regional Atmospheric Modeling System) to investigate how land conversion in the Amazon and Northern South America have changed the hydrology of the region, and to see if those changes are significant enough to produce an …

    mit Repository record

  12. Atmospheric Impact of Biogenic Volatile Organic Compounds: Improving Measurement and Modeling Capabilities

    Panji, Namrata ShanmukhVirginia Tech2024

    … reactive organic gases in small sample flows for atmospheric gas sampling, enhancing the sensitivity and detection limits of analytical instruments. Enrichments between 4640% and 111% were measured for major reactive atmospheric gases at ultra low flow rates and roughly several hundred percent for …

    vt Repository record

  13. Downdraft impacts on tropical convection

    Thayer-Calder, Katherine, author, Randall, David, advisor, Johnson, Richard, committee member, Maloney, Eric, committee member, Strout, Michelle, committee memberColorado State University. Libraries2013

    … 1 km horizontal resolution from the System for Atmospheric Modeling (SAM) v6.8.2 to examine convective downdrafts. We look at Radiative-Convective Equilibrium (RCE), a 21 day case from TOGA-COARE, Weak Temperature Gradient (WTG) simulations with varied shear profiles, and Lagrangian Parcel data …

    colostate Repository record

  14. The study and real-time implementation of attenuation correction for X-band dual-polarization weather radars

    Liu, Yuxiang, author, Bringi, V. N., advisor, Chandrasekar, V., advisorColorado State University. Libraries2008

    … simulation using the CSU-RAMS (Regional Atmospheric Modeling System). The retrieved rain and wet ice specific attenuation fields were found to be in close correspondence to the 'true' fields calculated from the simulation. The concept to correct rain and wet ice attenuation separately can …

    colostate Repository record

  15. Improving numerical weather prediction: error growth at the convective scale and speed

    Leoncini, Giovanni, author, Pielke, Roger A., Sr., advisorColorado State University. Libraries2009

    … clear sky case and implemented in the Regional Atmospheric Modeling System. The best one requires roughly 5% of the computational expense of the parent scheme. Accuracy is generally preserved and an analysis of the main meteorological fields after two days of simulations does not show …

    colostate Repository record

  16. Atmospheric Mercury Species In Northern Mississippi: Concentrations, Sources, Temporal Patterns, And Soil-Air Exchange

    Jiang, Yi2019

    … the distribution and temporal patterns of atmospheric Mercury species, as well as the sources of airborne Mercury in the mid-south region, concentrations of gaseous elemental mercury (gem), gaseous oxidized mercury (gom), and particulate-bound mercury (pbm), along with meteorological …

    mississippi Repository record

  17. Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations

    Wing, Allison AMassachusetts Institute of Technology2014

    … a single cluster. Specifically, the System for Atmospheric Modeling is used to perform 3-d cloud system resolving simulations of radiative-convective equilibrium in a non-rotating framework, with interactive radiation and surface fluxes and fixed sea surface temperature. Self-aggregation only …

    mit Repository record

  18. Cloud condensation nuclei in western Colorado: observations and model predictions

    Ward, Daniel Stewart, authorColorado State University. Libraries2010

    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 …

    colostate Repository record

  19. Hydrological modeling of mountain catchments in Central Asia

    Düthmann, DorisUniversität Potsdam

    … water management strategies. Hydrological modeling helps to improve our knowledge of the regional water cycle, and it can be used to gain a better understanding of past changes or estimate future hydrologic changes in view of projected changes in climate. However, due to the scarcity of …

    potsdam-diss Repository record

  20. Benefit-cost assessment of aviation environmental policies

    Gilmore, Christopher K. (Christopher Kenneth)Massachusetts Institute of Technology2012

    … air quality. Given the time-scale and atmospheric lifetimes of species derived from aircraft emissions at these higher altitudes, a global framework for assessment is required. This thesis specifically investigates the global as well as regional implementation of an ultra-low sulfur jet …

    mit Repository record

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