Biometric-Based Carbon Estimates And Environmental Controls Within An Age-Sequence Of Temperate Forests, 2014 McMaster University
Biometric-Based Carbon Estimates And Environmental Controls Within An Age-Sequence Of Temperate Forests, Michelle V. Kula
Open Access Dissertations and Theses
Understanding the response of forest carbon uptake and growth to interannual climate variability and forest management practices is important, given the large quantity of carbon stored in forests, and their significant role in the global carbon cycle. Since 2004, biometric and micrometeorological measurements were taken in an age-sequence (10-, 38- and 73-years-old as of 2012) of white pine (Pinus strobes L.) plantation forests in southern Ontario, Canada, providing an 8 year record of carbon sequestration, growth and climate. The 73-year old conifer site was thinned in early 2012, where 25% of trees were removed to improve light and water dynamics ...
The Constitutionality Of A Federal Emissions Trading Regime, 2014 Western University
The Constitutionality Of A Federal Emissions Trading Regime, Kai D. Sheffield
Western Journal of Legal Studies
It is impossible to know in advance what legal form, if any, Canada’s emissions trading regime will ultimately take. However, the current Conservative government’s explicit policy of replicating the United States’ greenhouse gas reduction goals and legislation offers some clues. Based on the government’s legislation and rulemaking thus far, the emissions trading regime that emerges in the short term may be an informal collection of emissions trading provisions contained in industry-specific regulations passed under the Canadian Environmental Protection Act. Such a regime may not be the most effective in staving off climate change, but it will impose ...
Temporal And Spatial Evolution Of Wave-Induced Ripple Geometry: Regular Versus Irregular Ripples, 2014 University of South Carolina
Temporal And Spatial Evolution Of Wave-Induced Ripple Geometry: Regular Versus Irregular Ripples, Timothy R. Nelson, George Voulgaris
Concurrent observations of inner shelf near bed hydrodynamics and acoustic imagery of the seabed are used to relate wave-induced ripple geometry (wavelength and orientation) to near bed directional wave velocities. The observations were collected on the continental shelf of the South Atlantic Bight at water depths of 9.5 and 30 m off the coasts of South Carolina (median size 177 mm) and Georgia (388 mm), respectively. 2-D spectral analysis techniques are performed on the imagery to automate detection of ripple wavelength, orientation, and irregularity. Our analysis shows that ripple irregularity is a time-dependent process dependent on magnitude, direction, and ...
Cosee Ocean Inquiry Group Report: Opportunities For Creating Lifelong Ocean Science Literacy, 2014 University of Massachusetts Boston
Cosee Ocean Inquiry Group Report: Opportunities For Creating Lifelong Ocean Science Literacy, Paul Boyle, Vince Breslin, Lisa Craig Brisson, John Fraser, Alan J. Friedman, Katie Gardner, Sarah Schoedinger, Jerry Schubel, Steve Uzzo, Steven Yalowitz
School for the Environment Publications
This Inquiry Group Report for the Centers for Ocean Sciences Education Excellence Ocean Communities in Education And Social Networks (COSEE OCEAN) provides a fresh look at how broader ocean science literacy can be developed, especially through less-recognized channels such as opportunistic learning, the private and “third” sectors, and the enormously varied activities under the heading of informal science education. The 10 authors of this report (see Contributors section) have been working together for two years to find and review a range of issues and resources for current and potential ocean science literacy providers, both professional and volunteer.
Several chapters provide ...
Mid-Latiude Rayleigh-Mie-Raman Lidar For Observations From 15 To 120 Km, 2013 Utah State University
Mid-Latiude Rayleigh-Mie-Raman Lidar For Observations From 15 To 120 Km, Vincent B. Wickwar, Leda Sox, Joshua P. Herron, Matthew T. Emerick
Rayleigh lidar opened a portion of the atmosphere, from 30 to 90 km, to ground-based observations. Rayleigh-scatter observations were made at the Atmospheric Lidar Observatory (ALO) at Utah State University (USU) from 1993–2004 between 45 and 90 km. The lidar consisted of a 0.44-m diameter mirror, a frequency-doubled Nd:YAG laser opera'ng at 532-nm at 30- Hz at either 18- or 24-W, giving power- aperture products (PAPs) of 2.7- or 3.6- Wm2, respec'vely, and one detector channel. An example of what was accomplished with this system is shown as part of Fig. 1. The ...
Temperatures In The Mid-Latitude Mesosphere During Sudden Stratospheric Warmings As Determined From Rayleigh Lidar Data, Leda Sox
No abstract provided.
Environmental Analysis Of Goes-R Proving Ground Convection Initiation Forecasting Algorithms, 2013 University of Nebraska - Lincoln
Environmental Analysis Of Goes-R Proving Ground Convection Initiation Forecasting Algorithms, Jason M. Apke
Dissertations & Theses in Earth and Atmospheric Sciences
The enhanced temporal and spatial resolution of the GOES-R series will allow for the use of cloud top cooling based convection initiation (CI) forecasting algorithms. Two such algorithms have been created on the current generation of GOES satellites: theUniversityofWisconsincloud top cooling algorithm (UWCTC) and the University of Alabama-Huntsville’s satellite convection analysis and tracking algorithm (SATCAST). Preliminary analysis of algorithm products has led to speculation over pre-convective environmental effects on algorithm performance, which this study aims to examine. CI indications are used with objective segmentation tools to identify and cluster radar objects over theGreat Plainsbased on reflectivity quantitative and spatial ...
Marine Diatom Assemblage Variation Across Pleistocene Glacial-Interglacial Transitions And Neogene Diatom Biostratigraphy Of Site C9001, Nw Pacific Ocean, 2013 University of Nebraska - Lincoln
Marine Diatom Assemblage Variation Across Pleistocene Glacial-Interglacial Transitions And Neogene Diatom Biostratigraphy Of Site C9001, Nw Pacific Ocean, Marcella K. Purkey
Dissertations & Theses in Earth and Atmospheric Sciences
In 2006, D/V-Chikyu cruise CK06-06 drilled Hole C9001C at Site C9001 in the Northwest Pacific Ocean, 80 km east of the Shimokita Peninsula, Japan. An existing chronostratigraphic framework provides a continuous glacial-interglacial (GI) climate record from which a diatom record of paleoenvironmental changes was developed across several GI cycles. Species counts, diatom temperature values, calculated sea-surface temperatures (SST) and factor analysis were produced for each sample and calibrated to prior diatom studies in this region. These features were used to characterize and compare interglacial maxima of Marine Isotope Stages (MIS) 1, 5e, 9 and 11 and transitions from the ...
Keeney, Sean Carpenter (Sc 1259), 2013 Western Kentucky University
Keeney, Sean Carpenter (Sc 1259), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 1259. “My Experience of ‘Andrew,’” by Sean Keeney, Dade County, Florida, relating the effect on him and his family of Hurricane Andrew, which struck the area on 24 August 1992. Includes biographical data on Keeney.
Using The Storm Water Management Model To Predict Urban Headwater Stream Hydrological Response To Climate And Land Cover Change, J. Y. Wu, Janette R. Thompson, Randy K. Kolka, Kristie J. Franz, Timothy W. Stewart
Natural Resource Ecology and Management Publications and Papers
Streams are natural features in urban landscapes that can provide ecosystem services for urban residents. However, urban streams are under increasing pressure caused by multiple anthropogenic impacts, including increases in human population and associated impervious surface area, and accelerated climate change. The ability to anticipate these changes and better understand their effects on streams is important for developing and implementing strategies to mitigate potentially negative effects. In this study, stream flow was monitored during April–November (2011 and 2012), and the data were used to apply the Storm Water Management Model (SWMM) for five urban watersheds in central Iowa, USA ...
Statistical Characteristics Of Polar Mesospheric Gravity Waves Observed Over Alaska, 2013 Utah State University
Statistical Characteristics Of Polar Mesospheric Gravity Waves Observed Over Alaska, Michael Negale, Kim Nielsen, Mike J. Taylor, Dominique Pautet, Margit Dyrland
Short-period (<1 hr) gravity wave observations over the Arctic region are few and their impact on the Arctic mesosphere lower thermosphere (MLT) region via momentum deposition is of high interest, but has yet to be determined. The Mesospheric Airglow Imaging and Dynamics (MAID) project was initiated in January 2011 to investigate the presence and dynamics of these waves over the interior of Alaska. Observations were made from the Davis Building at Poker Flat Research Range (PFRR) (65N) using an all-sky imager. This site provides an exceptional opportunity to establish a long-term climatology of short-period gravity waves in the Arctic. Here, we present summary measurements of prominent gravity waves focusing on their winter-time spatial and temporal characteristics. Measurements were made over two consecutive winters in 2011 and 2012 yielding 117 quasi-monochromatic wave events obtained from sequential OH (715-930 nm) images. Their characteristics are compared with recent gravity wave observations at Resolute Bay, Canada (75N), ALOMAR Station, Norway (69N), Svalbard (78N) in the Arctic, and with Rothera Station (76S) in Antarctic. The distributions of the wave parameters measured at PFRR were found to be similar to those of the other high-latitude sites, except for the direction of propagation. The wave headings observed at PFRR exhibited dominant preference for motion towards the east, while the other high-latitude observations reported westward motion. To investigate the preferred wave directionality, we look at the effects of critical level filtering using zonal and meridional winds obtained from NASA’s Modern-Era Retrospective Analysis for Research and Applications (MERRA) and the Horizontal Wind Model 2007 (HWM07).
A Crowdsourced Hail Dataset: Potential, Biases, And Inaccuracies, 2013 University of Wisconsin Milwaukee
A Crowdsourced Hail Dataset: Potential, Biases, And Inaccuracies, Joseph Robert Pehoski
Theses and Dissertations
Hail is a substantial severe weather hazard in the USA, with significant damage to property and
crops occurring annually. Traditional methods of forecasting hail size have limited accuracy, and despite
improvements in remote sensing of precipitation, the fall characteristics of hail make quantification of
hail imprecise. Research into hail is ongoing, but traditional hail datasets have known biases and low
spatiotemporal resolution. The increased usage of smartphones creates the opportunity to use a
crowdsourced dataset provided by the Precipitation Identification Near the Ground (PING) program, a
program developed by the National Severe Storms Laboratory. PING data is compared to approximate ...
Nineteenth Century North American And Pacific Tidal Data: Lost Or Just Forgotten?, 2013 Portland State University
Nineteenth Century North American And Pacific Tidal Data: Lost Or Just Forgotten?, Stefan A. Talke, David A. Jay
Civil and Environmental Engineering Faculty Publications and Presentations
Tide data are the oldest and longest oceanographic records and comprise one of the few tools for understanding, quantifying, and separating century-scale human and climate impacts on the coastal zone. Our archival research indicates that continuous measurements of tides began in 1844 in the western Atlantic, 1853 in the Eastern Pacific, and 1858 in the Western Pacific. At least 50 multiyear tide series existed by the year 1900. With few exceptions, however, these 19th and early 20th century measurements have not been analyzed in more than a century and have been forgotten and neglected by the scientific community. This article ...
Deep-Water Near-Bottom Turbulence In Lake Michigan: An Underwater Investigation, 2013 Purdue University
Deep-Water Near-Bottom Turbulence In Lake Michigan: An Underwater Investigation, David J. Cannon, Cary Troy
The Summer Undergraduate Research Fellowship (SURF) Symposium
Motivated by a need to characterize near-bottom deep-water turbulence for an understanding of the filtration capabilities of invasive quagga mussels, an instrument tripod was deployed in Lake Michigan for six months in 60m of water to measure current velocities, with specific interest being paid to near-bottom (0.10 to 0.95 meters above bottom) velocities during the deployment. The deployment period (September 2012-April 2013) was characterized by very little stratification and a median temperature of about throughout the water column. A mean horizontal velocity of 3.6 cm/s with a standard deviation of 2 cm/s was also measured ...
Satellite And Ground-Based Measurements Of Mesospheric Temperature Variability Over Cerro Pachon, Chile (30.3° S), Jonathan R. Pugmire, Michael J. Taylor, Yucheng Zhao, P Dominique Pautet, James M. Russell Iii
Jonathan R Pugmire
Observations of mesospheric OH (6,2) rotational temperatures by the Utah State University Mesospheric Temperature Mapper (MTM) located at the Andes Lidar Observatory, Cerro Pachon, Chile (30.3° S, 70.7° W) reveal a large range of nightly variations induced by atmospheric gravity waves and tides, as well as strong seasonal oscillations. This study investigates MTM temperature variability over the past 4 years comprising over 800 nights of high-quality data and compares the results with MTM measurements from Maui, Hawaii (2001-2005) and coincident mesospheric temperature measurement by the SABER instrument on the NASA TIMED satellite.
Satellite And Ground-Based Measurements Of Mesospheric Temperature Variability Over Cerro Pachon, Chile (30.3° S), Jonathan Pugmire, Michael J. Taylor, Yucheng Zhao, P. D. Pautet, J. M. Russell
Graduate Student Posters
— Observations of mesospheric OH (6,2) rotational temperatures by the Utah State University Mesospheric Temperature Mapper (MTM) located at the Andes Lidar Observatory, Cerro Pachon, Chile (30.3◦ S, 70.7◦ W) reveal a large range of nightly variations induced by atmospheric gravity waves and tides, as well as strong seasonal oscillations. This study investigates MTM temperature variability over the past 4 years comprising over 800 nights of high-quality data and compares the results with MTM measurements from Maui, Hawaii (2001-2005) and coincident mesospheric temperature measurement by the SABER instrument on the NASA TIMED satellite.
Ground-Based Observations With A Rayleigh-Mie-Raman Lidar From 15-120 Km, 2013 Utah State University
Ground-Based Observations With A Rayleigh-Mie-Raman Lidar From 15-120 Km, Leda Sox, Vincent B. Wickwar, Joshua P. Herron, David L. Barton, Matthew T. Emerick
Rayleigh lidar systems have historically made ground-based observations of the upper atmosphere (stratosphere and mesosphere) from 35-90 km. This technology has helped fill the data collection gap between the troposphere and space. Recently our Rayleigh lidar group at the Atmospheric Lidar Observatory on the campus of Utah State University (42° N, 112° W) upgraded the original lidar system in order to extend the measurement range for neutral densities and temperatures to higher altitudes and has increased the upper limit, so far, from 90 to 110 km. Next, we will extend the lower altitude limit downward to 15 km. This will ...
Disher, John Lee, B. 1938 (Sc 1183), 2013 Western Kentucky University
Disher, John Lee, B. 1938 (Sc 1183), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 1183. Letter from John Lee Disher of Summerville, South Carolina, to his sister Nancy Disher Baird, Bowling Green, Kentucky, describing the aftermath of Hurricane Hugo.
Alongshore Momentum Balance Analysis On A Cuspate Foreland, 2013 University of South Carolina
Alongshore Momentum Balance Analysis On A Cuspate Foreland, Nirnimesh Kumar, George Voulgaris, Jeffery H. List, John C. Warner
Nearshore measurements of waves and currents off Cape Hatteras, North Carolina, U.S.A, are used to investigate depth-averaged subtidal circulation and alongshore momentum balances in the surf and inner shelf region around a cuspate foreland. Data were collected on both sides of the cape representing shorefaces with contrasting shoreline orientation (north-south vs. northwest-southeast) subjected to the same wind forcing. In the nearshore, the subtidal flow is aligned with the local coastline orientation while at the cape point the flow is along the existing submerged shoal, suggesting that cape associated shoals may act as an extension of the coastline. Alongshore ...
Sediment Resuspension, Flocculation And Settling In A Macrotidal Estuary, 2013 University of South Carolina
Sediment Resuspension, Flocculation And Settling In A Macrotidal Estuary, Ya Ping Wang, George Voulgaris, Yan Li, Yang Yang, Jianhua Gao, Jia Chen, Shu Gao
Estuarine boundary layer and water column in situ measurements of hydrodynamics, sediment resuspension and sediment particle size distribution are presented for a macrotidal environment in SE China. Vertical and tidal variability of sediment size and its relation to turbulence and hydrodynamic forcing are examined using time-series from two week long experiments after they are phase averaged to reconstruct typical neap and spring tidal cycles. In situ particle size distributions obtained using laser diffraction show clear evidence of flocculation processes that change dynamically during the tidal cycle. Mean particle size of particles in suspension is found to be one order of ...