Oceanography and Atmospheric Sciences and Meteorology Commons^™

Analysis Of Plasma Bubble Signatures In The Ionosphere, Omar A. Nava

Theses and Dissertations

Plasma bubbles are large scale structures of depleted plasma density in Earth's ionosphere that disrupt radio and satellite communications, to include global navigation satellite systems. This study used the Ionospheric Forecast Model (IFM) to analyze affected look angles and total electron content (TEC) differences due to plasma bubbles of various sizes for 27 geophysical conditions consisting of different seasons and levels of solar and geomagnetic activity at 421 GPS ground stations worldwide. Overall, different geographic locations and plasma bubble configurations produced different affected look angle profiles. Bigger plasma bubbles, larger density depletion factors, higher levels of solar activity and the …

In Situ Checks Of Sonic Anemometer Temperature Calibration, David Cook, Michael Negale

Physics Student Research

The temperature calibration of the Gill Instruments WindMaster Pro sonic anemometer used in the ARM SGP ECOR systems is actually a curve, but is approximated with a linear fit for field use. The original calibrations were performed in a temperature-controlled chamber. The linear fit slope is only applied to the calculation of sensible heat flux and not to the reported temperature. The linear fit results in an underestimate of sensible heat flux during cold ambient temperatures and an overestimate during hot ambient temperatures. In situ calibrations performed using five years of ARM SGP data reveal how poorly the temperature is …

The Weather And Climate Of West Virginia, Kevin Law, H. Michael Mogil

Geography Faculty Research

West Virginia is a geographically small state with a distinctive climate. The article describes the climatological patterns of the state plus describes some historical weather events.

Seafloor Characterization Using Airborne Hyperspectral Co-Registration Procedures Independent From Attitude And Positioning Sensors, Yuri Rzhanov, Shachak Pe'eri, James V. Gardner, James Guilford

Center for Coastal and Ocean Mapping

The advance of remote-sensing technology and data-storage capabilities has progressed in the last decade to commercial multi-sensor data collection. There is a constant need to characterize, quantify and monitor the coastal areas for habitat research and coastal management. In this paper, we present work on seafloor characterization that uses hyperspectral imagery (HSI). The HSI data allows the operator to extend seafloor characterization from multibeam backscatter towards land and thus creates a seamless ocean-to-land characterization of the littoral zone.

Exploration Of The Anaximander Mud Volcanoes, Timothy M. Shank, Santiago Herrera, Walter Cho, Christopher N. Roman, Katherine L. Croff Bell

Graduate School of Oceanography Faculty Publications

No abstract provided.

Landscape Imaging Of The Southeast Aegean Sea, Michael L. Brennan, Tufan Turanli, Bridget Buxton, Katherine L. Croff Bell, Christopher N. Roman, Meko Kofahl, Orkan Koyagasioglu, Daniel Whitesell, Thomas Chamberlain, Richard Sullivan, Robert Ballard

Graduate School of Oceanography Faculty Publications

No abstract provided.

Passive Ranging Of Dynamic Rocket Plumes Using Infrared And Visible Oxygen Attenuation, Robert Anthony Vincent

Theses and Dissertations

Atmospheric oxygen absorption bands in observed spectra of boost phase missiles can be used to accurately estimate range from sensor to target. This work compares two oxygen absorption bands in the near-infrared (NIR) and visible (Vis) spectrum, centered at 762nm and 690 nm, to passively determine range. Spectra were observed from static tests of both surface-to-air missile simulators at 405m range and a full-scale solid rocket motor at 900m range. The NIR O₂ band provided range estimates accurate to within 3% for both tests, while the Vis O₂ band had range errors of 77% and 15 %, respectively. …

Circulation In The Philippine Archipelago Simulated By 1/12° And 1/25° Global Hycom And Eas Ncom, Harley E. Hurlbert, E. Joe Metzger, Janet Sprintall, Shelley Riedlinger, Robert A. Arnone, Toshiaki Shinoda, Xiaobiao Xu

Faculty Publications

Three ocean models, 1/25 degrees global HYbrid Coordinate Ocean Model (HYCOM), 1/12 degrees global HYCOM, and East Asian Seas Navy Coastal Ocean Model (EAS NCOM) nested in global NCOM, were used to provide a global context for simulation of the circulation within the Philippine Archipelago as part of the Philippine Straits Dynamics Experiment (PhilEx). The Philippine Archipelago provides two significant secondary routes for both the Indonesian throughflow and the western boundary current of the Pacific northern tropical gyre. The deeper route enters the archipelago from the north through Mindoro Strait, after passing through Luzon Strait and the South China Sea. …

Trends Of Wind And Wind Power Over The Coterminous United States, Eric M. Holt

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The trends of wind and wind power at a typical wind turbine hub height (80 m) are analyzed using the North American Regional Reanalysis (NARR) dataset for 1979-2009. Based upon the wind speeds at NARR’s vertical layers right above and below the 80 m level, the wind speeds at 80 m are estimated using two methods assuming the wind profile respectively as linear and power-law distribution with respect to the altitude in the lower boundary layer. Furthermore, we calculate the following variables at 80 m that are needed for the estimation and interpretation of wind power: the air density, zonal …

Lsuhsc Facilities Daily Updates: March 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2011

LSUHSC Facilities Daily Updates from March 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.

Lsuhsc Facilities Biweekly Update: March 2011, Lsuhsc Property And Facilities Management

LSUHSC Facilities Biweekly Updates: 2011

LSUHSC Facilities Biweekly Updates from March 11 and 25, 2011.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.

Development Of High-Resolution Underwater Mapping Techniques, Christopher N. Roman, Gabrielle Inglis, J. Ian Vaughn, Stefan Williams, Oscar Pizarro, Ariell Friedman, Daniel Steinberg

Graduate School of Oceanography Faculty Publications

No abstract provided.

Maritime History Of Anzac Cove, Michael L. Brennan, Dwight Coleman, Christopher N. Roman, Tufan Turanli, Dan Davis, Alexis Catsambis, James Moore, Maureen Merrigan, Brennan Bajdek, Daniel Whitesell, Robert Ballard

Graduate School of Oceanography Faculty Publications

No abstract provided.

Exploration Of The Kolumbo Volcanic Rift Zone, Steven Carey, Katherine L. Croff Bell, Paraskevi Nomikou, Georges Vougioukalakis, Christopher N. Roman, Kathleen Cantner, Konstantina Bejelou, Maria Bourbouli, Julie Fero Martin

Graduate School of Oceanography Faculty Publications

No abstract provided.

Crop Updates 2011 - Nutrition, Precision Agriculture & Climate And Forecasting, Deb Archdeacon, Andrew Gulliver, David Cullen, Qifu Ma, Richard Bell, Ross Brennan, Craig Scanlan, Wen Chen, Geoff Anderson, Mike Bolland, Peter Rees, Sandy Alexander, Frank D'Emden, Stephen Davies, Breanne Best, Louise Barton, Klaus Butterbach-Bahl, Ralph Kiese, Daniel Murphy, Peter Newman, Roger Mandel, Roger Lawes, Michael Robertson, Derk Bakker, Jeremy Lemon, Alison Lacey, John Paul Collins, Glen Riethmuller, Fiona H. Evans, David Stephens, Caroline Peek, Tim Scanlon

Crop Updates

This session covers sixteen papers from different authors:

Nutrition

1. Balance® used in conventional cropping practice with half of the upfront fertiliser rate can sustain crop yield and build soil biological fertility, Deb Archdeacon1, Andrew Gulliver2 and David Cullen2, 1Agronomica, Wellington Mill, WA, 2Custom Composts, Nambeelup, WA

2. Effects of potassium (K) supply on plant growth, potassium uptake and grain Yield in wheat grown in grey sand, Qifu Ma1, Richard Bell1, Ross Brennan2 and Craig Scanlan2, 1School of Environmental Science, Murdoch University, 2Department of Agriculture and Food

3. Improving fertiliser management: redefining the …

Recent Increase In Black Carbon Concentrations From A Mt. Everest Ice Core Spanning 1860-2000 Ad, Susan D. Kaspari, M. Schwikowski, M. Gysel, M. G. Flanner, S. Kang, S. Hou, P. A. Mayewski

All Faculty Scholarship for the College of the Sciences

A Mt. Everest ice core spanning 1860–2000 AD and analyzed at high resolution for black carbon (BC) using a Single Particle Soot Photometer (SP2) demonstrates strong seasonality, with peak concentrations during the winter‐spring, and low concentrations during the summer monsoon season. BC concentrations from 1975–2000 relative to 1860–1975 have increased approximately threefold, indicating that BC from anthropogenic sources is being transported to high elevation regions of the Himalaya. The timing of the increase in BC is consistent with BC emission inventory data from South Asia and the Middle East, however since 1990 the ice core BC record does not indicate …

Slides: Environmental Water In Australia, Chris Arnott

Conversation with Water Management Reps from Colorado and Australia: "Adapting to Climate Change: Lessons Learned from Australia" (February 14)

Presenter: Chris Arnott, Managing Director, Alluvium Consulting

30 slides

Slides: Adapting To Climate Change: Lessons Learnt From The Australian Water Experience, Will Fargher

Conversation with Water Management Reps from Colorado and Australia: "Adapting to Climate Change: Lessons Learned from Australia" (February 14)

Presenter: Will Fargher, National Water Commission, Australian Government

18 slides [4 have titles only and are missing images]

Climate Modeling: From Global Climate Models To Regional Climate Applications, John F. Mejia, Darko Koracin

Climate Change Seminar Series (NNE)

- Establish a sustainable Global/Regional Climate Modeling team that is capable of simulating regional climate and predicting future hydrological resources - Develop a necessary computer facility for regional climate modeling and links to model and measurements data bases - Educate future scientists in this area of climate research

Alternate Trophic Pathways Support Enhanced Bathypelagic Biomass Over A Mid-Ocean Ridge System, Tracey Sutton, Jeanna M. Hudson, Joel C. Hoffman, Tone Falkenhaug, Odd Aksel Bergstad, M. Heino

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

A classic paradigm of oceanic ecology is that pelagic animal biomass decreases exponentially with depth. Results of a muti-year study of the distribution and ecology of the pelagic fauna over the northern Mid-Atlantic Ridge (MAR), from Iceland to the Azores, revealed that water column biomass maxima can occur at deep meso- and bathypelagic depths (>750 m). Further, topographic association of the deep-pelagic fauna occurs at some locations. For example, bathypelagic fish abundance and biomass maxima were observed within the benthic boundary layer (<200 m above the bottom) during the 2004 G.O. Sars MAR-ECO expedition. Results of a pelagic food-web model over the MAR suggest that alternate trophic pathways contribute significantly to this deep biomass maxima. Consumption of decapod crustacea and gelatinous zooplankton represented major portions of the total consumption by pelagic fishes. Stable isotope analysis of 63 species, from zooplankton to large benthic predators, suggest short food chains and high trophic efficiency may account for enhanced deep-pelagic biomass.