Biogeographic Consequences Of Historic And Contemporary Climate Change In Boreal Forest Birds,
2011
University at Albany, State University of New York
Biogeographic Consequences Of Historic And Contemporary Climate Change In Boreal Forest Birds, Joel Ralston
Legacy Theses & Dissertations (2009 - 2024)
In this dissertation, I combine ecological niche models (ENMs), which can be extrapolated through time to predict historic and future changes in species distributions, with mitochondrial and nuclear genetic markers to study the biogeographic consequences of historic and contemporary climate change on boreal forest birds, and in particular Blackpoll Warbler.
The Influence Of The Great Lakes On Mcs Formation And Development In The Warm Season,
2011
University at Albany, State University of New York
The Influence Of The Great Lakes On Mcs Formation And Development In The Warm Season, Alan Frederick Srock
Legacy Theses & Dissertations (2009 - 2024)
This study focuses on how near-surface thermal boundaries that form near the Great Lakes during the warm season can contribute to the formation of mesoscale convective systems (MCSs). Differential heating across land-water interfaces can create a cold dome of air over the lake; convection may develop when the relatively-cold dome of air becomes deep enough to enable air parcels that intersect these boundaries to reach their level of free convection. A radar-based climatology of MCS events surrounding the Great Lakes for 2002-2005 showed that MCSs frequently form in the vicinity of the Great Lakes. Composites of MCS events over the …
Northeast United States Heat Waves : A Statistical Analysis And Synoptic Climatology,
2011
University at Albany, State University of New York
Northeast United States Heat Waves : A Statistical Analysis And Synoptic Climatology, Scott Cooper Runyon
Legacy Theses & Dissertations (2009 - 2024)
The results of a statistical analysis of anomalously hot day and heat wave frequency in the United States (U.S.) are presented, along with a synoptic climatology of northeast U.S. heat waves (NHWs) for 1948-2001. This study used daily high temperatures retrieved from the National Climatic Data Center (NCDC) Daily Surface Dataset for 54 stations binned into the nine standard NCDC climate regions. Anomalously hot days were defined as when the daily high temperature exceeded the climatological 97.5-percentile temperature. Heat waves were defined as at least three consecutive anomalously hot days, whereas regional heat waves (e.g., NHWs) were defined as simultaneous …
The Downstream Extratropical Flow Response To Recurving Western North Pacific Tropical Cyclones,
2011
University at Albany, State University of New York
The Downstream Extratropical Flow Response To Recurving Western North Pacific Tropical Cyclones, Heather M. Archambault
Legacy Theses & Dissertations (2009 - 2024)
The factors that govern the downstream flow response to recurving western North Pacific (WNP) tropical cyclones (TCs) are investigated from climatological, composite analysis, case study, and predictability perspectives. A 1979–2009 climatology of WNP TC recurvature indicates that TC recurvature is followed by a four-day period of above-normal North Pacific meridional flow. The relationship between TC recurvature and above-normal North Pacific meridional flow is found to be stronger in late summer through mid-fall than in early summer and early winter, and stronger for TCs that interact strongly with the jet stream than for TCs that interact weakly with the jet stream. …
Origin And Maintenance Of The Stable Boundary Layer In A Patchy Landscape,
2011
University at Albany, State University of New York
Origin And Maintenance Of The Stable Boundary Layer In A Patchy Landscape, Luiz Eduardo Medeiros
Legacy Theses & Dissertations (2009 - 2024)
Field observations made in Hudson Valley region, NY during the Hudson Valley Ambient Meteorology Study (HVAMS) are analyzed to examine how terrain and land cover influence nocturnal mixing in real-world landscapes. Important terrain features such as local topographic concavity and site sheltering are shown to exhibit systematic influence on turbulent intermittency and on the consequent nocturnal heat and momentum fluxes. Very local obstacles have their most important effects on mixing during strong winds (> 5m/s). Local terrain concavity was found to be the more important factor influencing surface fluxes than sheltering for all classes of winds.
Western Equatorial Pacific Climate Variability From Restricted Basins : Century Scale Changes In Kau Bay To Glacial-Interglacial Changes In The Sulu Sea,
2011
University at Albany, State University of New York
Western Equatorial Pacific Climate Variability From Restricted Basins : Century Scale Changes In Kau Bay To Glacial-Interglacial Changes In The Sulu Sea, Samantha Langton
Legacy Theses & Dissertations (2009 - 2024)
The surface ocean in the western equatorial Pacific contains some of the warmest water on the planet in the western Pacific warm pool (WPWP). Changes in the size and scope of the warm pool have a significant impact on global climate. With the concern of changes in the extent of this body of water as a result of anthropomorphic changes in atmospheric composition, it is vital to investigate prior changes to the WPWP, the causes of such changes, and resultant effects. For my dissertation, I used several proxies to analyze sediments from Kau Bay and the Sulu Sea in Indonesia …
Persistence And Dissipation Of Lake Michigan-Crossing Mesoscale Convective Systems,
2011
University at Albany, State University of New York
Persistence And Dissipation Of Lake Michigan-Crossing Mesoscale Convective Systems, Nicholas Metz
Legacy Theses & Dissertations (2009 - 2024)
This thesis investigates mature mesoscale convective systems (MCSs) that traversed Lake Michigan to elucidate synoptic-scale and Lake Michigan-related features that discriminate between persistence and dissipation. Of the 110 coherent MCSs that crossed Lake Michigan during the warm seasons (April–September) of 2002–2007, 47 (43%) persisted, while 63 (57%) dissipated. Persistence was favored during July and August, when Lake Michigan was warmer and during the evening and overnight, when the low-level jet (LLJ) was most intense. However, a number of MCSs also persisted during the early warm season when the Lake Michigan water temperature was cooler than the surrounding land.
A Synergetic Use Of Satellite Imagery From Sar And Optical Sensors To Improve Coastal Flood Mapping In The Gulf Of Mexico,
2011
City University of New York
A Synergetic Use Of Satellite Imagery From Sar And Optical Sensors To Improve Coastal Flood Mapping In The Gulf Of Mexico, Naira Chaouch, Marouane Temimi, Scott Hagen, John Weishampel, Stephen Medeiros, Reza Khanbilvardi
United States Department of Commerce: Staff Publications
This work proposes a method for detecting inundation between semi-diurnal low and high water conditions in the northern Gulf of Mexico using high-resolution satellite imagery. Radarsat 1, Landsat imagery and aerial photography from the Apalachicola region in Florida were used to demonstrate and validate the algorithm. A change detection approach was implemented through the analysis of red, green and blue (RGB) false colour composites image to emphasise differences in high and low tide inundation patterns. To alleviate the effect of inherent speckle in the SAR images, we also applied ancillary optical data. The flood-prone area for the site was delineated …
Adaptive Resource Management And The Value Of Information,
2011
U.S. Geological Survey, Cooperative Research Units
Adaptive Resource Management And The Value Of Information, Byron K. Williams, Mitchell J. Eaton, David R. Breininger
United States Geological Survey: Staff Publications
The value of information is a general and broadly applicable concept that has been used for several decades to aid in making decisions in the face of uncertainty. Yet there are relatively few examples of its use in ecology and natural resources management, and almost none that are framed in terms of the future impacts of management decisions. In this paper we discuss the value of information in a context of adaptive management, in which actions are taken sequentially over a time frame and both future resource conditions and residual uncertainties about resource responses are taken into account. Our objective …
Factors That Contribute To Turbidity On The West Fork Of The White River In Arkansas,
2011
University of Arkansas, Fayetteville
Factors That Contribute To Turbidity On The West Fork Of The White River In Arkansas, Chris Cotton, Brian Haggard
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
The West Fork of the White River (WFWR) exceeds the water quality standard for turbidity (10 NTU) set by the Arkansas Department of Environmental Quality and, since 1998, the river has been on Arkansas’s 303 (d) list of impaired water bodies unsuitable for aquatic life because of turbidity exceedances. To understand the factors that could be related to turbidity, total suspended solids (TSS), total inorganic suspended solids (TISS), total volatile suspended solids (TVSS), sestonic chlorophyll-a (Chl-a) concentrations, and turbidity were measured on three sample dates from nine sites on the WFWR. As the site location changed in the downstream direction, …
The Us Southern Ocean Global Ocean Ecosystems Dynamics Program,
2011
Old Dominion University
The Us Southern Ocean Global Ocean Ecosystems Dynamics Program, Eileen E. Hofmann, John M. Klinck, Dan P. Costa, Kendra L. Daly, Joseph J. Torres
CCPO Publications
The article presents information on the U.S. Southern Ocean Global Ocean Ecosystem Dynamics program (US SO GLOBEC). It was aimed at understanding the environmental and biological factors that contribute to enhanced Antarctic krill growth, reproduction, recruitment and survivorship, as well as the interactions between Antarctic krill and its predators and competitors. The highlights of US SO GLOBEC research are also discussed.
Improving Simulations Of The Upper Ocean By Inclusion Of Surface Waves In The Mellor-Yamada Turbulence Scheme,
2011
Old Dominion University
Improving Simulations Of The Upper Ocean By Inclusion Of Surface Waves In The Mellor-Yamada Turbulence Scheme, Chuan Jiang Huang, Fangli Qiao, Zhenya Song, Tal Ezer
CCPO Publications
The Mellor-Yamada turbulence closure scheme, used in many ocean circulation models, is often blamed for overly high simulated surface temperature and overly low simulated subsurface temperature in summer due to insufficient vertical mixing. Surface waves can enhance turbulence kinetic energy and mixing of the upper ocean via wave breaking and nonbreaking-wave-turbulence interaction. The influences of wave breaking and wave-turbulence interaction on the Mellor-Yamada scheme and upper ocean thermal structure are examined and compared with each other using one-dimensional and three-dimensional ocean circulation models. Model results show that the wave-turbulence interaction can effectively amend the problem of insufficient mixing in the …
Detection Of The 2010 Chilean Tsunami Using Satellite Altimetry,
2011
Old Dominion University
Detection Of The 2010 Chilean Tsunami Using Satellite Altimetry, B. D. Hamlington, R. R. Leben, O. A. Godin, J. F. Legeais, E. Gica, V. V. Titov
CCPO Publications
Tsunamis are difficult to detect and measure in the open ocean because the wave amplitude is much smaller than it is closer to shore. An effective early warning system, however, must be able to observe an impending tsunami threat far away from the shore in order to provide the necessary lead-time for coastal inhabitants to find safety. Given the expansiveness of the ocean, sensors capable of detecting the tsunami must also have very broad areal coverage. The 2004 Sumatra-Andaman tsunami was definitively detected in the open ocean from both sea surface height and sea surface roughness measurements provided by satellite …
Editorial-The 2nd International Workshop On Modeling The Ocean (Iwmo-2010),
2011
Old Dominion University
Editorial-The 2nd International Workshop On Modeling The Ocean (Iwmo-2010), Tal Ezer, Lie-Yauw Oey, Huijie Xue, Xiao Hua Wang
CCPO Publications
The formation of the International Workshop on Modeling the Ocean (IWMO) in 2009 has been motivated by the rapid growth in ocean modeling research around the world. In particular, the spread of ocean modeling research in Asia during recent years and the establishment of many international collaborative modeling projects led to the first meeting, IWMO-2009, which was held in Taipei, Taiwan, 23–26 February 2009 (see the two special issues resulted from this meeting: Oey et al. 2010a, b). The second meeting (IWMO-2010; http://www.ccpo.odu.edu/∼tezer/ IWMO_2010/) was hosted by the Center for Coastal Physical Oceanography at Old Dominion University in Norfolk, VA, …
Hurricane Induced Land And Vegetation Changes In The Breton Sound Estuary And Chandeleur Islands Using Landsat 5 Tm,
2011
Louisiana State University and Agricultural and Mechanical College
Hurricane Induced Land And Vegetation Changes In The Breton Sound Estuary And Chandeleur Islands Using Landsat 5 Tm, Vandana Varshini Raghunathan
LSU Master's Theses
This study focuses on hurricane-induced changes in land and vegetation primarily in two study areas, the Breton Sound Estuary and the Chandeleur Islands, southeast of New Orleans, Louisiana. Breton Sound Estuary consists of the Caernarvon Diversion, a fresh water diversion of the Mississippi River that supplies this region with managed pulses of fresh water and sediments. The Chandeleur Islands are a chain of barrier islands that are uninhabited and transgressive in nature. A sequence of hurricanes in the past two decades has greatly altered both areas significantly. Satellite data were analyzed for a period of 24 years (1987-2011) of Breton …
Fate Of Mississippi River Diverted Nitrate On Vegetated And Non-Vegetated Coastal Marshes Of Breton Sound Estuary,
2011
Louisiana State University and Agricultural and Mechanical College
Fate Of Mississippi River Diverted Nitrate On Vegetated And Non-Vegetated Coastal Marshes Of Breton Sound Estuary, Christine M. Vanzomeren
LSU Master's Theses
The Caernarvon Diversion meters Mississippi River water into coastal marshes of Breton Sound. Elevated levels of nitrogen in river water have sparked concerns that nutrient loading may affect marsh resilience and belowground biomass, as evidence from several marsh fertilization studies. These concerns resulted from observation that fresh and brackish Breton Sound marshes suffered extensive damage from Hurricane Katrina. The goal of this study is to determine the fate of nitrate (the dominant inorganic nitrogen form in the Mississippi River) in Breton Sound Estuary marshes. We hypothesized that most nitrate would be removed by denitrification and that nitrate loading would not …
Comparison Of The Age And Growth Of Red Snapper (Lutjanus Campechanus) Amongst Habitats And Regions In The Gulf Of Mexico,
2011
Louisiana State University and Agricultural and Mechanical College
Comparison Of The Age And Growth Of Red Snapper (Lutjanus Campechanus) Amongst Habitats And Regions In The Gulf Of Mexico, Courtney Rose Saari
LSU Master's Theses
The Gulf of Mexico (GOM) red snapper stock has been exploited since the mid 1800s; yet it is still one of the most economically important fisheries in the GOM. Red snapper have been managed as a unit stock and are currently overfished, but perhaps no longer undergoing overfishing. Habitat varies greatly throughout the GOM and while numerous studies have aged red snapper, none have simultaneously compared the age and size structure and growth rates among standing and toppled oil and gas platforms with natural habitats. The objectives of this study were to examine the size and age structure and growth …
A Terrestrial Gamma Ray Flash Observed From An Aircraft,
2011
University of California, Santa Cruz
A Terrestrial Gamma Ray Flash Observed From An Aircraft, D. M. Smith, Michael E. Splitt, Steven M. Lazarus
Aerospace, Physics, and Space Science Faculty Publications
On 21 August 2009, the Airborne Detector for Energetic Lightning Emissions (ADELE), an array of six gamma-ray detectors, detected a brief burst of gamma rays while flying aboard a Gulfstream V jet near two active thunderstorm cells. The duration and spectral characteristics of the event are consistent with the terrestrial gamma ray flashes (TGFs) seen by instruments in low Earth orbit. A long-duration, complex +IC flash was taking place in the nearer cell at the same time, at a distance of ∼10 km from the plane. The sferics that are probably associated with this flash extended over 54 ms and …
The Integrated Wrf/Urban Modeling System: Development, Evaluation, And Applications To Urban Environmental Problems,
2011
National Center for Atmospheric Research
The Integrated Wrf/Urban Modeling System: Development, Evaluation, And Applications To Urban Environmental Problems, Fei Chen, Hiroyuki Kusaka, Robert Bornstein, Jason Ching, C.S.B. Grimmond, Susanne Grossman-Clarke, Thomas Loridan, Kevin W. Manning, Alberto Martilli, Shiguang Miao, David J. Sailor, Francisco P. Salamanca, Haider Taha, Mukul Tewari, Xuemei Wang, Andrzej A. Wyszogrodzki, Chaolin Zhang
Mechanical and Materials Engineering Faculty Publications and Presentations
To bridge the gaps between traditional mesoscale modeling and microscale modeling, the National Center for Atmospheric Research (NCAR), in collaboration with other agencies and research groups, has developed an integrated urban modeling system coupled to the Weather Research and Forecasting (WRF) model as a community tool to address urban environmental issues. The core of this WRF/urban modeling system consists of: 1) three methods with different degrees of freedom to parameterize urban surface processes, ranging from a simple bulk parameterization to a sophisticated multi-layer urban canopy model with an indoor outdoor exchange sub-model that directly interacts with the atmospheric boundary layer, …
State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2011,
2011
University of North Florida
State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2011, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University
State of the River Report
No abstract provided.
