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Articles 31 - 60 of 220

Full-Text Articles in Atmospheric Sciences

Odu Professor Co-Authors Study Of The Sources Of Sea Level Rise Since 1900, Tiffany Whitfield Oct 2020

Odu Professor Co-Authors Study Of The Sources Of Sea Level Rise Since 1900, Tiffany Whitfield

News Items

No abstract provided.


Life In Hampton Roads Survey: Hurricanes And Covid-19, News @ Odu Aug 2020

Life In Hampton Roads Survey: Hurricanes And Covid-19, News @ Odu

News Items

No abstract provided.


Odu Professors Focus On Hurricane Planning During A Pandemic, Sherry Dibari Jul 2020

Odu Professors Focus On Hurricane Planning During A Pandemic, Sherry Dibari

News Items

No abstract provided.


Sulfur Dioxide From The Atmospheric Chemistry Experiment Satellite, Doug Cameron Apr 2020

Sulfur Dioxide From The Atmospheric Chemistry Experiment Satellite, Doug Cameron

College of Sciences Posters

The version 4.0 dataset from the Atmospheric Chemistry Experiment – Fourier Transform Spectrometer (ACE-FTS) on SCISAT, released in March of 2019, has sulfur dioxide (SO2) volume mixing ratio (VMR) profiles as a routine data product. From this dataset, global SO2 distributions between the altitudes of 10.5 km and 23.5 km are analyzed. The global distribution of all SO2 VMR data by altitude is broken down into 30° and 5° latitude zones. Seasonality of the global SO2 distribution is explored. Volcanic SO2 plumes are isolated in the dataset and compared with extinction data from the …


Trend Analyses Of The Abundances Of Atmospheric Molecules, Anton Fernando Apr 2020

Trend Analyses Of The Abundances Of Atmospheric Molecules, Anton Fernando

Physics Theses & Dissertations

A new line list for the A3Π - X3Σ- electronic transition of NH has been prepared using line positions from the literature and calculated line intensities. High level ab initio calculations were performed with the MOLPRO program to obtain the A - X transition dipole moment function. Potential energy curves and line strengths were calculated with Le Roy's RKR1 and LEVEL programs. Line intensities and Einstein A values were calculated with Western's PGOPHER program after converting the Hund's case (b) output of LEVEL to Hund's case (a) input needed for PGOPHER. The Herman- Wallis effect is …


Nrlmsis 2.0: A Whole-Atmosphere Empirical Model Of Temperature And Neutral Species Densities, J. T. Emmert, D. P. Drob, J. M. Picone, D. E. Siskind, M. Jones Jr., M. G. Mlynczak, Peter F. Bernath, X. Chu, E. Doornbos, B. Funke, L. P. Goncharenko, M. E. Hervig, M. J. Schwartz, P. E. Sheese, F. Vargas, B. P. Williams, T. Yuan Jan 2020

Nrlmsis 2.0: A Whole-Atmosphere Empirical Model Of Temperature And Neutral Species Densities, J. T. Emmert, D. P. Drob, J. M. Picone, D. E. Siskind, M. Jones Jr., M. G. Mlynczak, Peter F. Bernath, X. Chu, E. Doornbos, B. Funke, L. P. Goncharenko, M. E. Hervig, M. J. Schwartz, P. E. Sheese, F. Vargas, B. P. Williams, T. Yuan

Chemistry & Biochemistry Faculty Publications

NRLMSIS® 2.0 is an empirical atmospheric model that extends from the ground to the exobase and describes the average observed behavior of temperature, eight species densities, and mass density via a parametric analytic formulation. The model inputs are location, day of year, time of day, solar activity, and geomagnetic activity. NRLMSIS 2.0 is a major, reformulated upgrade of the previous version, NRLMSISE-00. The model now couples thermospheric species densities to the entire column, via an effective mass profile that transitions each species from the fully mixed region below ~70 km altitude to the diffusively separated region above ~200 km. Other …


Deep Equatorial Pacific Ocean Oxygenation And Atmospheric Co2 Over The Last Ice Age, Franco Marcantonio, Ryan Hostak, Jennifer E. Hertzberg, Matthew W. Schmidt Jan 2020

Deep Equatorial Pacific Ocean Oxygenation And Atmospheric Co2 Over The Last Ice Age, Franco Marcantonio, Ryan Hostak, Jennifer E. Hertzberg, Matthew W. Schmidt

OES Faculty Publications

Ventilation of carbon stored in the deep ocean is thought to play an important role in atmospheric CO2 increases associated with Pleistocene deglaciations. The presence of this respired carbon has been recorded by an array of paleoceanographic proxies from various locations across the global ocean. Here we present a new sediment core from the Eastern Equatorial Pacific (EEP) Ocean spanning the last 180,000 years and reconstruct high-resolution 230Th-derived fluxes of 232Th and excess barium, along with redox-sensitive uranium concentrations to examine past variations in dust delivery, export productivity, and bottom-water oxygenation, respectively. Our bottom-water oxygenation record is compared to …


Odu Expert Invited To Testify At Legislative Hearing On Coastal Resilience, Sarah Huddle Jul 2019

Odu Expert Invited To Testify At Legislative Hearing On Coastal Resilience, Sarah Huddle

News Items

No abstract provided.


Odu Study Puts The Estimated Price Tag Of A Major Hurricane In Hampton Roads At $40 Billion Or More, News @ Odu Jun 2019

Odu Study Puts The Estimated Price Tag Of A Major Hurricane In Hampton Roads At $40 Billion Or More, News @ Odu

News Items

No abstract provided.


Science Pubs Will Focus On Climate Related Resilience And Communication, Amy Matzke-Fawcett Jun 2019

Science Pubs Will Focus On Climate Related Resilience And Communication, Amy Matzke-Fawcett

News Items

No abstract provided.


Precipitation Trends Across The Commonwealth Of Virginia (1947 – 2016), Michael J. Allen, Thomas R. Allen Apr 2019

Precipitation Trends Across The Commonwealth Of Virginia (1947 – 2016), Michael J. Allen, Thomas R. Allen

Virginia Journal of Science

Water is an important resource for the Commonwealth of Virginia. Too much water increases runoff, disrupt transportation networks, and contributes to school closures. Too little water may adversely impact agricultural operations. To improve climate-related information to Virginia citizens, this study assesses means and changes in precipitation across the Commonwealth of Virginia (1947 – 2016). Using daily station-level precipitation data from the Global Historical Climate Network (GHCN), descriptive statistics were calculated for 43 locations in terms of total precipitation (inches decade-1), precipitation days (x>0”), and heavy precipitation days (x>1.0”). On average, locations showed an overall increase in …


Nbc Today Show Features Odu Researchers On Location In Arctic Circle April 1 And 2, Betsy Hnath Mar 2019

Nbc Today Show Features Odu Researchers On Location In Arctic Circle April 1 And 2, Betsy Hnath

News Items

No abstract provided.


Life In Hampton Roads: Local Residents Concerned About Sea Level Rise And Flood Risks, News @ Odu Feb 2019

Life In Hampton Roads: Local Residents Concerned About Sea Level Rise And Flood Risks, News @ Odu

News Items

No abstract provided.


Wake Vortex Pair Formation As An Analog For Dust Devil And Tornado Genesis, Robert L. Ash Jan 2019

Wake Vortex Pair Formation As An Analog For Dust Devil And Tornado Genesis, Robert L. Ash

Mechanical & Aerospace Engineering Faculty Publications

In 1966, meteorologist R.S. Scorer attempted to explain how large-scale oceanic tropical depressions become hurricanes or typhoons. His model was based on the idea that when these large-scale tropical depression structures begin to rotate, mostly due to Coriolis effects, an annular outer portion of that structure changes suddenly to a potential vortex segment, with the same outer radial limit as the low-pressure structure, but with an inner radius that conserves the overall system angular momentum and kinetic energy. By analogy with the "jump" instability describing sudden buckling of a vertical column, this paper shows that his conjecture merits additional consideration. …


Recent Trends In Stratospheric Chlorine From Very Short‐Lived Substances, Ryan Hossaini, Elliot Atlas, Sandip S. Dhomse, Martyn P. Chipperfield, Peter F. Bernath, Anton M. Fernando, Jens Mühle, Amber A. Leeson, Stephen A. Montzka, Wuhu Feng Jan 2019

Recent Trends In Stratospheric Chlorine From Very Short‐Lived Substances, Ryan Hossaini, Elliot Atlas, Sandip S. Dhomse, Martyn P. Chipperfield, Peter F. Bernath, Anton M. Fernando, Jens Mühle, Amber A. Leeson, Stephen A. Montzka, Wuhu Feng

Chemistry & Biochemistry Faculty Publications

Very short‐lived substances (VSLS), including dichloromethane (CH2Cl2), chloroform (CHCl3), perchloroethylene (C2Cl4), and 1,2‐dichloroethane (C2H4Cl2), are a stratospheric chlorine source and therefore contribute to ozone depletion. We quantify stratospheric chlorine trends from these VSLS (VSLCltot) using a chemical transport model and atmospheric measurements, including novel high‐altitude aircraft data from the NASA VIRGAS (2015) and POSIDON (2016) missions. We estimate VSLCltot increased from 69 (±14) parts per trillion (ppt) Cl in 2000 to 111 (±22) ppt Cl in 2017, with >80% delivered to …


Mulholland Leading Volunteer Effort To "Measure The Muck" In Chesapeake Bay Oct. 27, News @ Odu Oct 2018

Mulholland Leading Volunteer Effort To "Measure The Muck" In Chesapeake Bay Oct. 27, News @ Odu

News Items

No abstract provided.


October Science Pub: Using Technology To Map The Effects Of Sea Level Rise, Amy Matzke-Fawcett Oct 2018

October Science Pub: Using Technology To Map The Effects Of Sea Level Rise, Amy Matzke-Fawcett

News Items

No abstract provided.


Reconstruction Of Sea Level Around The Korean Peninsula Using Cyclostationary Empirical Orthogonal Functions, Se-Hyeon Cheon, Benjamin D. Hamlington, Kyung-Duck Suh Sep 2018

Reconstruction Of Sea Level Around The Korean Peninsula Using Cyclostationary Empirical Orthogonal Functions, Se-Hyeon Cheon, Benjamin D. Hamlington, Kyung-Duck Suh

OES Faculty Publications

Since the advent of the modern satellite altimeter era, the understanding of the sea level has increased dramatically. The satellite altimeter record, however, dates back only to the 1990s. The tide gauge record, on the other hand, extends through the 20th century but with poor spatial coverage when compared to the satellites. Many studies have been conducted to create a dataset with the spatial coverage of the satellite datasets and the temporal length of the tide gauge records by finding novel ways to combine the satellite data and tide gauge data in what is known as sea level reconstruction. However, …


Biology Researcher Publishes Study On Saving Marine Organisms From Ocean Acidification, Noell Saunders Aug 2018

Biology Researcher Publishes Study On Saving Marine Organisms From Ocean Acidification, Noell Saunders

News Items

No abstract provided.


Hampton Roads Housing Prices Drop 5 Percent Following A Severe Weather Event, Says University Research, Betsy Hnath Aug 2018

Hampton Roads Housing Prices Drop 5 Percent Following A Severe Weather Event, Says University Research, Betsy Hnath

News Items

No abstract provided.


Fourier Transform Spectroscopy Of The C³Δ-X³Δ Transition Of Tio In Support Of Exoplanet Spectroscopy, James N. Hodges, Peter Bernath Aug 2018

Fourier Transform Spectroscopy Of The C³Δ-X³Δ Transition Of Tio In Support Of Exoplanet Spectroscopy, James N. Hodges, Peter Bernath

Chemistry & Biochemistry Faculty Publications

Recent limitations in the TiO line list used in cross-correlation detection schemes have made the detection and quantification of TiO in exoplanetary atmospheres challenging. The quality of the line list appears to degrade at wavelengths shorter than 630 nm. The C3Δ-X3Δ electronic transition has strong rovibronic bands near 500 nm. In an effort to improve the line list, a spectrum of TiO in a furnace at 1950 K is analyzed, and the assigned lines of the C3Δ-X3Δ transition are fit with the N2 Hamiltonian in the molecular spectrum fitting software, PGOPHER …


Odu, City Of Norfolk To Host Neighbors Building Neighborhoods Conference June 23, Noell Saunders Jun 2018

Odu, City Of Norfolk To Host Neighbors Building Neighborhoods Conference June 23, Noell Saunders

News Items

No abstract provided.


Odu, Mit Solve And Rise Co-Host Workshop For Local Entrepreneurs Focused On Coastal Resilience Solutions, Betsy Hnath Jun 2018

Odu, Mit Solve And Rise Co-Host Workshop For Local Entrepreneurs Focused On Coastal Resilience Solutions, Betsy Hnath

News Items

No abstract provided.


Description And Mechanisms Of The Mid-Year Upwelling In The Southern Caribbean Sea From Remote Sensing And Local Data, Digna T. Rueda-Roa, Tal Ezer, Frank E. Muller-Karger Jun 2018

Description And Mechanisms Of The Mid-Year Upwelling In The Southern Caribbean Sea From Remote Sensing And Local Data, Digna T. Rueda-Roa, Tal Ezer, Frank E. Muller-Karger

CCPO Publications

The southern Caribbean Sea experiences strong coastal upwelling between December and April due to the seasonal strengthening of the trade winds. A second upwelling was recently detected in the southeastern Caribbean during June-August, when local coastal wind intensities weaken. Using synoptic satellite measurements and in situ data, this mid-year upwelling was characterized in terms of surface and subsurface temperature structures, and its mechanisms were explored. The mid-year upwelling lasts 6-9 weeks with satellite sea surface temperature (SST) ~1-2°C warmer than the primary upwelling. Three possible upwelling mechanisms were analyzed: cross-shore Ekman transport (csET) due to alongshore winds, wind curl (Ekman …


Statistical Analysis And Comparison Of Optical Classification Of Atmospheric Aerosol Lidar Data, Kwasi Gyening Afrifa May 2018

Statistical Analysis And Comparison Of Optical Classification Of Atmospheric Aerosol Lidar Data, Kwasi Gyening Afrifa

Electrical & Computer Engineering Projects for D. Eng. Degree

This dissertation presents a new study for the analysis and classification of atmospheric aerosols in remote sensing LIDAR data. Information on particle size and associated properties are extracted from these remote sensing atmospheric data which are collected by a ground-based LIDAR system. This study first considers optical LIDAR parameter-based classification methods for clustering and classification of different types of harmful aerosol particles in the atmosphere. Since accurate methods for aerosol prediction behaviors are based upon observed data, computational approaches must overcome design limitations, and also consider appropriate calibration and estimation accuracy. Consequently, two statistical methods based on generalized linear models …


Gov. Ralph Northham Discusses Offshore Drilling At Blue Planet Forum, Betsy Hnath Mar 2018

Gov. Ralph Northham Discusses Offshore Drilling At Blue Planet Forum, Betsy Hnath

News Items

No abstract provided.


Sea Level Rise Moving Faster Than Scientists Initially Thought, Noell Saunders Feb 2018

Sea Level Rise Moving Faster Than Scientists Initially Thought, Noell Saunders

News Items

No abstract provided.


Odu-Led St. Vincent Workshop Explored Ocean's Role In Caribbean-Based U.N. Sustainable Development Initiative, News @ Odu Feb 2018

Odu-Led St. Vincent Workshop Explored Ocean's Role In Caribbean-Based U.N. Sustainable Development Initiative, News @ Odu

News Items

No abstract provided.


Effects Of Projected Changes In Wind, Atmospheric Temperature, And Freshwater Inflow On The Ross Sea, Michael S. Dinniman, John M. Klinck, Eileen E. Hofmann, Walker O. Smith Jr. Feb 2018

Effects Of Projected Changes In Wind, Atmospheric Temperature, And Freshwater Inflow On The Ross Sea, Michael S. Dinniman, John M. Klinck, Eileen E. Hofmann, Walker O. Smith Jr.

CCPO Publications

A 5-km horizontal resolution regional ocean-sea ice-ice shelf model of the Ross Sea is used to examine the effects of changes in wind strength, air temperature, and increased meltwater input on the formation of high-salinity shelf water (HSSW), on-shelf transport and vertical mixing of Circumpolar Deep Water (CDW) and its transformation into modified CDW (MCDW), and basal melt of the Ross Ice Shelf (RIS). A 20% increase in wind speed, with no other atmospheric changes, reduced summer sea ice minimum area by 20%, opposite the observed trend of the past three decades. Increased winds with spatially uniform, reduced atmospheric temperatures …


Odu Colleges Prepare To Collaborate On Second Arctic Research Expedition, Roger Njunge Jan 2018

Odu Colleges Prepare To Collaborate On Second Arctic Research Expedition, Roger Njunge

News Items

No abstract provided.