Browsing Atmospheric sciences by Title
Now showing items 1-20 of 309
-
A Hemispheric Analysis of Aerosol Particle-Lightning Relationships
The relationship between predicted aerosol mass concentrations from NASA’s Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2) and observed lightning from the World Wide Lightning Location ... -
A Reconstruction of Top-of-the-Atmosphere Radiation Fields During the Instrumental Era
Earth’s energy budget is a fundamental aspect of the climate system, relating to climate sensitivity,poleward energy transport, climate dynamics, and the forced versus internal components to climate variability. Satellites ... -
A Sea Surface Model for Coupled Data-Driven S2S Forecasting
Data-driven modelling of the atmosphere has rapidly become a vibrant area of research. Recent studies have shown these models have the ability to outperform existing state-of-the-artnumerical weather prediction models. ... -
A Study of Multiscale Processes in Near-Global Aquaplanet Cloud-Resolving Models: From Shallow Cumulus Cloud Feedbacks to Tropical Cyclogenesis Predictability
A near-global aquaplanet cloud-resolving models (NGAqua) has been used to study the responses of clouds and circulations to 4 K sea-surface temperature (SST) warming, CO2 quadrupling, and both combined. NGAqua spans a large ... -
A study of the fidelity of simulated warm rain microphysics over the coastal terrain of the Pacific Northwest
Significant advancements in microphysical parameterization schemes have taken place over the last two decades. Yet, over that time, improvements to warm rain physics have largely been neglected in favor of improving ice ... -
A synthesis of observations of aerosol-cloud interactions over the pristine, biologically active Southern Ocean and the implications for global climate model predictions.
The change in planetary albedo due to aerosol-cloud interactions (aci) during the industrial era is the leading source of uncertainty in inferring Earth's climate sensitivity to increased greenhouse gases from the historical ... -
A Theory of Summertime Temperature Variability
A new theory of temperature variability presents fluctuations of near-surface temperature on timescales ranging from one day to one month as outgrowths of solar radiation and precipitation forcing and the coupling between ... -
Advanced Approaches for the Collection, Quality Control, and Bias Correction of Smartphone Pressure Observations and Their Application in Numerical Weather Prediction
Distributed worldwide, over 300 million smartphones are now capable of measuring atmospheric pressure, providing a potential surface observing network of unprecedented density and coverage. To examine the utility of such ... -
Aerosol cloud interactions in southeast Pacific stratocumulus: satellite observations, in situ data and regional modeling
(2013-07-23)The influence of anthropogenic aerosols on cloud radiative properties in the persistent southeast Pacific stratocumulus deck is investigated using MODIS satellite observations, in situ data from the VAMOS Ocean-Cloud-Atm ... -
Aerosol size distribution modeling for the Pacific Northwest
(2007)The goal of this project is to more accurately model the aerosol size distribution with the Community Multiscale Air Quality modeling system (CMAQ). The approach is to compare its performance to observations in the Pacific ... -
Aerosol-cloud-precipitation interaction in ultraclean layers and optically thin veil cloud system in the stratocumulus to cumulus transition: remote sensing measurements and cloud resolving model results
Recent observational studies have shown that ultraclean layers (UCLs) and optically thin veil clouds associated with precipitating deep cumulus are common features of the marine boundary layer in the stratocumulus to cumulus ... -
An Evaluation of Simulated Microphysics over Terrain during the OLYMPEX Field Campaign
The OLYMPEX field campaign of winter 2015-2016 offers the opportunity to assess the performance of model physics over a coastal mountain range. This thesis explores precipitation and microphysics simulations, and investigates ... -
An Exploration of Factors that Affect Earth's Climate in Time
This Earth’s climate is strongly influenced by both external and internal forcings. Several examples are the Earth’s rotation rate, variations in the Earth’s orbit, and the land-sea geometry. My PhD work specifically studies ... -
An Index for Predicting Precipitation in the North Coast of Peru Using Logistic Regression
The north coast of Peru has a desert-like climate. Since precipitation is so scarce, strong convective events have a big impact on this region, especially when they are associated with an increase in sea surface temperature. ... -
An observational and theoretical study of the structure and propagation of the Madden-Julian Oscillation
This study is compososed of two parts. In the first part of this dissertation, the large-scale circulation features that determine the structure and evolution of MJO- related moisture and precipitation fields are examined ... -
Analysis of new observational datasets relating to the organization and dynamical impacts of tropical convection
(2013-04-17)Deep convection is a major heat source in the tropical atmosphere, driving circulation cells that are an important aspect of Earth's climate. The environmental conditions that modulate the occurrence of lightning, which ... -
An Analysis of the Structure and Dynamics of Inner Core Precipitation Features in a Tropical Cyclone
(2013-04-17)Airborne Doppler radar observations of the stationary rainband complex and secondary eyewall in Hurricane Rita (2005) were analyzed to better understand the inner-core dynamics of tropical cyclones. In the upwind end of ... -
Annular modes in the atmospheric general circulation
(2000)The leading modes of variability of the extratropical circulation in both hemispheres are characterized zonally symmetric or "annular" structures. Whereas the structure and dynamics of the Southern Hemisphere (SH) annular ... -
Antarctic Elevation Drives Hemispheric Asymmetry in Polar Lapse Rate Climatology and Feedback
The lapse-rate feedback is the dominant driver of stronger warming in the Arctic than the Antarctic in simulations with increased CO2. While Antarctic surface elevation has been implicated in promoting a weaker Antarctic ... -
Antarctic sea ice response to weather and climate modes of variability
The relationship between climate modes and Antarctic sea ice is explored by separating the variability into intraseasonal, interannual, and decadal time scales. Cross spectral analysis shows that geopotential height and ...