Browsing Atmospheric sciences by Title
Now showing items 164-183 of 312
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The nature of adjoint sensitivities with respect to model parameters and their use in adaptive data assimilation
(2006)The predictability of the atmosphere depends, in part, on the accuracy of the initial states of numerical weather prediction models. Adjoints of numerical weather prediction models are used to produce initial condition ... -
Nd or not Nd? To what extent are biomass burning aerosols modulating cloud microphysics in the southeast Atlantic?
The colocation of clouds and smoke over the southeast Atlantic Ocean during the southern African biomass burning season has numerous radiative implications, including microphysical modulation of the clouds if smoke is ... -
New Insights into the South American Low Level Jet from RELAMPAGO Observations
The Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with Adaptive Ground Observations (RELAMPAGO) campaign produced unparalleled observations of the South American Low-Level Jet (SALLJ) in ... -
A new parameterization of marine stratocumulus and shallow cumulus clouds for climate models
(2001)A new parameterization of marine stratocumulus and shallow cumulus clouds is presented. The parameterization consists of a mass flux cumulus convection scheme coupled to a 1.5 order Turbulence Closure Model (TCM) with an ... -
Numerical simulation of tropical cyclone genesis
(1980)Past hurricane or typhoon simulation studies have concentrated on the development of the mature storm. Most of these simulations began with initial states that had closed, relatively strong cyclonic circulations and that ... -
A numerical study of three dimensional gravity waves triggered by deep tropical convection and their role in the quasi biennial oscillation
(2000)A three dimensional mesoscale model is used to examine the structure of gravity waves triggered by tropical convection and their role in the dynamics of the lower tropical stratosphere. Three distinct cases of tropical ... -
O3 photochemistry in the western US: mixing wildfire smoke with urban emissions
Ozone (O3) is a respiratory irritant and is hazardous to human health. O3 pollution is prevalent in urban areas but is also influenced by the transport of wildfire smoke. When wildfire smoke mixes with urban emissions, ... -
Objective quantification of convective clustering observed during the AMIE/DYNAMO 2-day rain episodes
One critical bottleneck in developing and evaluating ways to represent the mesoscale organization of convection in cumulus parameterization schemes is that there is no single accepted method of objectively quantifying the ... -
An observational and modeling study of a heavy orographic precipitation event over the Oregon Cascades
(2005)During 13--14 December 2001, a comprehensive set of observations over the central Oregon Cascades was collected as part of the IMPROVE-2 field project, permitting an unprecedented opportunity for the investigation of a ... -
An observational and numerical study of windstorms along the western side of the Washington Cascade Mountains
(1997)This dissertation investigates western Washington Cascade windstorms by utilizing various data sources such as conventional synoptic observations, profilers on both sides of the Cascade Mountains, a WSR-88D Doppler radar ... -
Observational Constraints on Tropospheric Chlorine Cycling
The multiphase photochemical cycling of chlorine has a widespread influence on the chemical composition of the troposphere, affecting climate, the oxidant budget, acid deposition to the biosphere, and the chemistry of ... -
An observational study of atmosphere-ocean interactions in the northern oceans on interannual and interdecadal time-scale
(1996)This study focuses on the air-sea interactions over the northern oceans from an observational point of view. Atmosphere-ocean interactions exhibit a strong seasonality in both the North Pacific and the North Atlantic. In ... -
An observational study of the tropical tropospheric circulation
(2005)This observational study focuses on four different aspects of the general circulation of the tropical troposphere: the seasonality of the mean meridional circulation (MMC), the zonal momentum balance of the tropical ... -
Observations of tropical cirrus by elastic backscatter lidars and the development of a cloud and aerosol retrieval algorithm for Raman lidars
Tropical cirrus cloud properties from elastic backscatter lidars--- namely the Atmospheric Radiation Measurement (ARM) program's ground-based micropulse lidars (MPL) and the spaceborne Cloud-Aerosol Lidar Infrared Pathfinder ... -
Observed and Modeled Cloud Responses to Climate Variability
Clouds play a significant role in the Earth’s climate, yet cloud feedbacks remain one of the largest sources of inter-model spread in climate predictions. Studying how clouds respond to internal modes of climate variability ... -
Ocean Heat Transport and the Width of the Hadley Circulation in an Aquaplanet GCM
Despite decades of research, the fundamental dynamics that govern the width of the Hadley circulation (HC) remain an active area of investigation. This study seeks to further theoretical understanding of HC width and of ... -
Oceanic latent heat flux from satellite data
(1998)This thesis presents a new method of estimating ocean latent heat flux (LHF) using satellite data. The surface layer equations derived from Monin-Obukhov similarity theory are closed with empirical parameterizations, and ... -
On the annual cycle over the atlantic sector: the relative role of land and ocean
(2003)This study investigates how local and remote forcings shape the annual cycle of surface temperature and precipitation in the tropical Atlantic ocean, Africa, and South America.We use an atmospheric general circulation model ... -
On the Evolution of Stratocumulus in the Subtropical Oceans: Modelling Challenges and Transitions in Cellular Organization from a Lagrangian Framework
University of Washington Abstract On the Evolution of Stratocumulus in the Subtropical Oceans: Modelling Challenges and Transitions in Cellular Organization from a Lagrangian Framework Ryan Eastman Chair of the Supervisory ... -
On the Influence of Poleward Jet Shift on Shortwave Cloud Feedback in Global Climate Models
Experiments designed to separate the effect of atmospheric warming from the effect of shifts of the eddy-driven jet on shortwave (SW) cloud feedback are performed with three global climate models (GCMs). In each model a ...