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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
Late spring or early summer brings an abrupt onset of a wet season to Peninsular Florida (PF). High daily rain rates are sustained throughout the summer until the demise of the wet season in autumn. Prediction of the Peninsular Florida...
Peatlands contain a significant amount of the global soil carbon, but the climate feedback affecting carbon stability within these peatland systems is still relatively unknown. Organic matter composition of peatlands plays a major role...
Organized convection is of critical importance in the tropical atmosphere. Recent advances in numerical modeling have revealed that moist convection can interact with its environment to transition from a quasi-random to organized state....
Laboratory experiments on a rotating tank of fluid are used to study the fundamental aspects of geophysical fluid flows. The present set of experiments are an attempt to study the effect of a rectangular ridge on the flow of a rotating...
The advancement of numerical weather prediction (NWP) has hastened the effort to understand how moist processes -- many of which are parameterized in NWP models -- influence cyclone structure and intensity. Despite this effort, there...
Peatlands cover a small percentage of the earth surface, but the exact mechanisms of how a third of the Earths global soil carbon is sequestered is not yet resolved. Therefore, this thesis aims to explore the relationship between the...
This study examines the possibility that winter storms developing off the east coast of Asia may trigger storms developing off the east coast of North American and vice versa. We focus on one point off the northeastern coast of North...
Dissolved organic phosphorus (DOP) in the surface ocean has a dual role as both the product of primary production and as a phosphorus substrate for phytoplankton when inorganic forms of phosphorus (P) are scarce. DOP has increasingly...
The environmental impacts of COVID-19 and the “new normal” of working from home are being explored in the scientific community. However, there is currently no published study on the COVID-19 impacts to nitrate load via septic systems....
Environmental legislation is a relatively new concept in the United States’ regulatory regime. High profile environmental disasters, including several in other countries, have underscored the challenges of effectively and efficiently...
Analysis of Microbial Abundance, Metabolic Potential, and Transcriptional Activity in the Gulf of Mexico "Deadzone" Reveals an Ammonia-Oxidizing Archaeal Hotspot
The northern Gulf of Mexico (nGOM) is home to one of the largest eutrophication-driven seasonal hypoxic zones in the world. These hypoxic zones are also known as “dead zones” because dissolved oxygen (DO) concentrations of ≤ 2 mg L-1 are...
The 10–20-day mode of surface winds is examined in the Indian Ocean, with special reference to the Arabian Sea, the Bay of Bengal, and the equatorial Indian Ocean during a strong (1994), weak (2002), and normal (1995) Indian summer...
Previous case studies have noted a significant extratropical flow response to recurving Atlantic tropical cyclones (TCs), which is often linked to extreme weather events downstream. This study examines the modification of Rossby waves on...
Climate change is radically altering the Arctic. These alterations are expected to have immense and cascading implications on the carbon cycling of the region. In particular, our interest lies in the Kolyma River (KR) as it is the...
At the same temperature, below 0oC, the saturation vapor pressure (SVP) over ice is slightly less than the SVP over liquid water. Numerical models use the Clausius-Clapeyron relation to calculate the SVP and relative humidity, but there...
Investigation of Changes in Paleoceanographic Redox State as a Driver for Early Silurian Extinction Events Using Multiple Geochemical Proxies in the Baltic Basin
Two mudstone-dominated early Silurian drill cores from the Baltic Basin were analyzed for pyrite sulfur isotopes (δ34Spy), organic matter carbon isotopes (δ13Corg), as well as iron speciation and trace metal chemostratigraphy to...
Impacts of Microbial Community Structure on Denitrification Rates in the Rhizosphere of J. Roemerianus and S. Alterniflora in a Gulf of Mexico Mixed Marsh
Marshes are particularly important ecosystems, providing long-term soil carbon storage, flood protection and nutrient filtration. Nutrient filtering, specifically nitrate removal, is largely the result of belowground microbially mediated...
The ice shelves in the Western Antarctic have seen an increase in melt over the past decade, mainly due to basal melting induced by underlying warm, salty Circumpolar Deep Water. Seal data in the Bellingshausen Sea provides extensive...
The Appalachian orogen is separated from west to east and into the Cumberland Plateau, Valley and Ridge, Blue Ridge, Inner Piedmont, and Carolina Superterrane physiographic provinces. Within the southern Appalachians of Alabama and...
Until the past decade, IIAB iron meteorites were thought to have formed by fractional crystallization under low pressure, corresponding to an asteroidal sized (<200 km) parent body. Some recent physical models for the formation of early...
Each year, tropical cyclones (TCs) impact communities around the world by producing rainfall with devastating damage, loss of life and can contribute a non-trivial amount to climatological annual mean rainfall. The representation of TC...
Hurricane Harvey (2017) spawned from a westward propagating tropical wave in the Atlantic and then tracked across the southern Caribbean Sea, the Yucatán Peninsula, and lastly over the Gulf of Mexico, where it quickly intensified into a...
Northern high-latitude regions are undergoing rapid changes as the Arctic warms at about twice the rate of mid-latitudes. Climate change is causing permafrost thaw, vegetation and hydrologic shifts, and the increased incidence of...
Sandy beaches are unique environments which offer billions of dollars’ worth of ecosystem services, including among others: storm protection, sediment storage and transport, habitat space for beach-dwelling and nesting species, nutrient...
The aeolian transport of aerosols (mineral dust from desert areas, smoke and ash from biomass burning, and from anthropogenic emissions) is an important process for introducing bioactive trace elements to the surface ocean and can have a...
Hardbottom habitats in the Big Bend Region of the Gulf of Mexico are the foundation for structure-forming species, such as corals and sponges. These structure forming communities (SFC) provide important ecological services; they serve as...
Rivers deliver approximately 260 Tg of dissolved organic carbon (DOC) to the ocean annually, yet there is little evidence of terrigenous DOC (tDOC) in the ocean. While tDOC was historically believed to be stable and resistant to...
Polycyclic Aromatic Hydrocarbons (PAH) buried in sandy beaches of the northeastern Gulf of Mexico after the Deepwater Horizon accident posed a potential risk to environmental and human health. Therefore, concentrations and decay rates of...
In order to study the impact of climate change on the Earth's hydrologic cycle, global information about snowfall is needed. To achieve global measurements of snowfall over both land and ocean, satellites are necessary. While satellites...
Spatial and Interannual Variability in Export Efficiency and the Biological Pump in an Eastern Boundary Current Upwelling System with Substantial Lateral Advection
Estimating interannual variability in carbon export is a key goal of many marine biogeochemical studies. However, due to variations in export mechanisms between regions, generalized models used to estimate global patterns in export often...
Atlantic Bluefin tuna (ABFT) (Thunnus thynnus) spawn in the warm oligotrophic regions of the Gulf of Mexico (GoM) where zooplankton biomass is on average low and highly variable. Consequently, their larvae are thought to be highly...
Precipitation from atmospheric fronts accounts for a significant portion of the total precipitation in the mid-latitudes, with some locations receiving the majority of their precipitation from atmospheric fronts. In addition, a...
Different phases of precipitation would bring different hydrological impacts. For example, rainfall would become streamflow and increase surface runoffs, while snow would accumulate and increase surface albedo, acting as a crucial driver...
Severe weather indices are empirical tools developed by meteorologists to assist in predicting severe weather. The Storm Prediction Center’s (SPC) Mesoanalysis website lists 23 composite indices. All of the listed composite indices are...
For almost all climate variables, the annual cycle of a climate variable is often the most dominant component of that variable. Although such annual cycle is suggested to tie with the annual changes of the solar irradiance arriving at...
The southern Appalachian Inner Piedmont in east central Alabama and west Georgia consists of two tectonically separated Ordovician lithotectonic units: the structurally upper Dadeville Complex and the underlying Opelika Group. The...
High frequency microwave instruments are increasingly used to observe ice clouds and snow. These instruments are significantly more sensitive than conventional precipitation radar. This is ideal for analyzing ice-bearing clouds, for ice...
Investigations of the Southern Appalachian Eastern Blue Ridge of East Central Alabama and West Central Georgia Using Structural, Geochemical, and Thermobarometric Analyses
Recent work in the southern Appalachians has identified the remnants of a historically critical Ordovician back-arc basin that now resides in the Talladega belt, eastern Blue Ridge, and Inner Piedmont terranes of Alabama, Georgia and...
Surface ozone (O3) is a toxic air pollutant. In the United States and Europe, among other places, policies and technology have reduced emissions of O3 precursors the last couple decades. As a result, peak levels of O3, quantified by...
In the spring of 2010, the MC 252 Deepwater Horizon well blow out lead to nearly five million barrels of Gulf of Mexico light sweet crude to be released into the northern Gulf at a depth of 1500 meters. Dispersant injected into the plume...
LLocal climate influences sea turtle hatching and emergence success with climatic extremes affecting embryonic development and hatchling emergence. Thus, it is crucial to understand how different climatic variables affect hatchling...
After the Deepwater Horizon (DWH) blowout, MC252 crude oil was washed onto the shores of the northeastern Gulf of Mexico. Weathered oil was buried in sandy Florida beaches in the form of sands covered by oil films, small oil particles, ...
El Valle is the easternmost volcano in the Central American Volcanic Arc, and is characterized by two periods of volcanic activity, an Old Group from 10-5 Ma and a Young Group from 3-0.03 Ma. Both the Old and Young Group’s are calc...
The Kasimovian (late Pennsylvanian) to early Roadian (middle Permian) is an interval of Earth history that experienced relatively stable climatic conditions highlighted by significant glaciation, which might represent an analog for...
Many tropical cyclone studies have been conducted on basin-averaged potential intensity trends and the influence of sea surface temperatures (SSTs) on tropical cyclone intensity, but there is less research on along-track potential...
Snow, another precipitation form besides rain, affects the Earth’s climate distinctly by modifying hydrological and radiative processes. The radiative properties of nonspherical snowflakes are much more complicated than their spherical...
The objective of this study is to quantify barrier layer development due to tropical cyclone (TC) passage using Argo float observations of temperature and salinity. To accomplish this objective, a climatology of Argo float measurements...
Zooplankton play an important role in global biogeochemistry and their secondary production supports valuable fisheries of the world’s oceans. Coupled physical-biogeochemical models (PBMs) provide a unique oceanographic research tool for...
Synoptic scale drivers, mainly extra-tropical cyclones, account for a majority of the day to day temperature variability in the mid-latitudes. This variability is at its greatest in the Northern Hemisphere in Boreal winter when the...
Disorganized, weakly forced convection is a routine summertime occurrence in the Southeast United States. Pulse severe storms are single cell thunderstorms that produce severe wind and/or severe hail for a brief period of time. These...
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
