Browsing Atmospheric sciences by Title
Now showing items 76-95 of 312
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Estimating the Response of Mid-latitude Orographic Precipitation to Global Warming
(2013-07-25)The possible change in orographic precipitation in response to global warming is a rising concern under climate change, which could potentially cause significant societal impact. A general circulation model was employed ... -
Evaluating airborne fluxes of reactive nitrogen compounds over the marine boundary layer: from eddy covariance to wavelet transform
Reactive nitrogen compounds (Nr) have different fates in the atmosphere due to differences in the governing process of chemical transformation, physical transport and deposition. Quantifying dry deposition of critical Nr ... -
Evaluating CFSv2 Subseasonal Forecast Skill with an Emphasis on Tropical Convection
The deterministic predictive skill of CFSv2 is analyzed with respect to lead time and temporal averaging period. We also examine the spatial distributions of error and bias for synoptic-scale parameters and the impacts of ... -
Evaluation of High-Level Clouds in Cloud Resolving Model Simulations with ARM and KWAJEX Observations
(2013-04-17)The objective of this research is to evaluate the performance of microphysical parameterizations in cloud resolving model (CRM). The goal is to understand the reasons for differences between simulated cloud statistics and ... -
Evaluation of the KCl Denuder Method for Gaseous Oxidized Mercury using HgBr<sub>2</sub> at an In-Service AMNet Site
During the summer of 2013, we examined the performance of KCl-coated denuders for measuring gaseous oxidized mercury (GOM) by calibrating with a known source of GOM (i.e., HgBr<sub>2</sub>) at the North Birmingham SouthEastern ... -
Evolution of Secondary Organic Aerosol Composition, Volatility, and Absorption During Oxidation of Phenolic Compounds Under Conditions Relevant to Biomass Burning
Phenolic compounds emitted from wildfires and biomass burning (BB) are highly reactive and yield secondary organic aerosol (SOA) and brown carbon (BrC) upon oxidation initiated by the hydroxyl radical (OH) and nitrate ... -
Evolution of the cross-equatorial atmospheric boundary layer in the east Pacific: observations and models
(2004)The NCAR C-130 research aircraft flew eight missions observing the atmospheric boundary layer (ABL) along 95°W, 1°S--12°N. The positive air-sea temperature difference over the equatorial cold tongue results in a shallow ... -
Examining changes to the Madden-Julian Oscillation in a warmer climate using CMIP5 models
Five models from the Coupled Model Intercomparison Project Phase 5 (CMIP5) that reasonably represent the Madden-Julian Oscillation (MJO) are used to examine the response of the MJO to greenhouse gas induced warming. Changes ... -
Examining the chemistry of atmospheric mercury using aircraft-based measurements and a global chemical transport model
Mercury is a potent neurotoxin that accumulates in fish and enters the human food chain. The largest source of mercury to the oceans is from the deposition of atmospheric mercury. Oxidized mercury species (Hg(II)) in the ... -
Exploring Aerosol-Cloud-Precipitation Feedbacks on Marine Low Cloud Induced by Natural and Anthropogenic Perturbations in a Cloud Resolving Model
This dissertation describes the development of a single mode bulk aerosol model for warm rain microphysics and its application within a cloud resolving model for the simulation of aerosol-cloud-precipitation interactions ... -
Exploring Meteorological and Biomass Burning Aerosol Influences on Marine Stratocumulus in the Southeast Atlantic using WRF-Chem
(2014-04-30)Biomass burning in southern Africa exists in a complex series of relationships with its adjacent and remote environments. Gas and aerosol emissions can be lofted into the free troposphere and undergo long-range transport ... -
Exploring the Interface of Land-Atmosphere Interactions and Boundary Layer Cloud Physics
Boundary layer clouds are fundamental components of the climate system because of their first order impacts on the global energy balance. While marine boundary layer clouds have received most of the attention in this field ... -
Facing Arctic Climate Change: Sea Ice Freeze Through the Lens of A Community
Arctic sea ice loss has significantly affected the wellbeing of Arctic Indigenous communities due to subsistence-based lifeways that depend on the land and ocean in remote coastal locations. Through conversations with ... -
Factors influencing the diurnal temperature range in the contiguous United States
(2000)During the past several decades, much of the United States has experienced a warming, particularly at night, and a marked decrease in the diurnal temperature range (DTR). Observed variations in many variables have been ... -
Field and Laboratory Perspectives on the Cloud Nucleating Abilities of Aerosol Particles
(2014-04-30)Aerosol-cloud interactions represent a significant uncertainty with respect to radiative forcing and future climate change. Both particle composition and size play key, yet poorly understood, roles in determining the cloud ... -
Fingerprinting low-frequency Last Millennium temperature variability in forced and unforced climate models
Constraining unforced and forced climate variability impacts interpretations of past climate variations and predictions of future warming. However, comparing General Circulation Models (GCMs) and Last Millennium Holocene ... -
Frictional convergence and the Madden-Julian oscillation
(2000)Frictional surface convergence is shown to be important to the Madden-Julian oscillation (MJO) of the tropical troposphere using both observations and an atmospheric general circulation model (GCM). An observed composite ... -
Frontal wave development over the Southern Ocean
(2003)The development of frontal waves over the Southern Ocean is described using SeaWinds-on-QuikSCAT scatterometer surface winds. A planetary boundary layer model is used to construct surface pressure fields and correct the ... -
Global climate reconstruction across time and space using data assimilation
Paleoclimate proxy data span seasonal to millennial time scales, and Earth's climate system has both high- and low-frequency components. Yet it is currently unclear how best to incorporate multiple time scales of proxy ... -
The global scale structure of the MJO
(2013-11-14)Thee global scale structure of the MJO is analyzed using the globally gridded ERA-Interim dataset (1979-2011). The study is separated into two parts: Part I of this study concentrates on how the tropical wind field evolves ...