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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.
Ice and snow particles have a great, yet poorly understood impact on the Earth's climate system. One of the difficulties of studying snow particles is their irregular shape. While spheres and even oblate spheroids backscatter radiation...
The tropical cyclone superensemble has provided skillful forecasts for Atlantic tropical cyclone activity for several years. Until very recently, the tropical cyclone superensemble had only been run using a suite of large scale models....
This research involves the creation of a new storm surge index that incorporates many variables important in storm surge generation like maximum winds, radius of maximum winds, pressure, translation speed, and bathymetry. Using a two...
Ocean transport of heat is a substantial component of the climate system but its characteristics and dynamic causes are still somewhat unknown. Prior research has shown that global observations from the ocean and atmosphere indicate that...
This study focuses on the interannual and intraseasonal variability of evaporative sources for rainfall events during the Indian monsoon. The monsoon is an important part of the economy and lifestyle in India, thus, any improvements in...
Curvature vorticity and shear vorticity are examined in an attempt to elucidate the physical mechanisms behind tropical cyclone (TC) intensity change. A particular emphasis is placed on the role of the shear to curvature vorticity...
Fourteen years of cloud-to-ground lightning data from the National Lightning Detection Network, and radiosonde releases from Miami and West Palm Beach, are used to develop statistical guidance equations that forecast the amount of warm...
This dissertation research consisted of the development, implementation and assessment of a community environmental education outreach initiative in support of a lake restoration project in Tallahassee, Florida, U.S.A. This study focused...
A technique based solely on QuikSCAT data is developed for determining suspect differences between QSCAT and ECMWF pressure gradients. Pressure fields are computed from scatterometer winds using a variational method that applies a...
Accurate hurricane intensity prediction is at the forefront of atmospheric science today, and improvements to mesoscale modeling of these storms continue to be major components of refining the accuracy of intensity forecasting. The...
Storm-Relative Eulerian Absolute Angular Momentum Tendency in Atlantic Tropical Cyclones: Advection and Torques and Their Relative Roles in Vortex Strengthening
This study examined inner-core sources and sinks of angular momentum in Atlantic tropical cyclones. Each advective and torque term in the Eulerian absolute angular momentum tendency equation was calculated in a storm-relative reference...
Tropospheric cloud ice has a significant impact on the earth's radiative balance and climate, and to help improve the ability to forecast short-term through climatological-scale weather, the importance of quantification of these ice...
Both observed and modeled global warming pattern shows a large surface polar warming and a large upper atmospheric warming in the tropics. This pattern leads to an amplification (reduction) of the temperature gradient at upper levels ...
Using a suite of high resolution models, the forecast skills of the superensemble for precipitation and 2-meter temperature over the continental United States and North America are shown. In this study, models and/or gridded fields such...
One of the goals of NASA's Intercontinental Chemical Transport Experiment Phase B (INTEX-B) was to perform quasi-Lagrangian (q-L) sampling of air pollution as it is transported across the Pacific Ocean from Asia toward North America. We...
One of the defining characteristics of the extratropical transition of tropical cyclones is the transition of the warm core thermal structure associated with the tropical cyclone into an initially cold core thermal structure associated...
As understanding of tropical cyclone (TC) evolution both during and beyond the tropical phase improves, forecasting and analysis techniques are adjusted accordingly. While these changes hopefully lead to more accurate forecasts, they...
A major theme of recent research is the investigation of the nature of climate variability and the current capability to measure, model, and predict it. This is a formidable task that involves understanding complex interactions and...
The El Nino-Southern Oscillation (ENSO), the North Atlantic Oscillation (NAO), the Pacific Decadal Oscillation (PDO), and the Polar Vortex Oscillation (PVO) produce conditions favorable for monthly extreme temperatures and precipitation....
Past binary logistic regression (BLR) and perfect prognosis schemes have shown skill for predicting the probability of one or more cloud-to-ground (CG) lightning flashes for regions such as Florida. This study examines the ability of the...
Extensive analysis has been conducted over past decades showing the impacts of El Niño-Southern Oscillation (ENSO) on various regions throughout the world. However, these studies have not analyzed data from many stations in Panama, or...
Although tropical cyclone (TC) track forecasts have improved considerably in recent years, predicting their intensity continues to be a challenge for both meteorologists and numerical models. A storm's path is primarily influenced...
A two-phase study of the potential impact of Geosynchronous Imaging Fourier Transfer Spectrometer (GIFTS) radiance data to the prediction of strong convective events was developed. In the first phase of the project, a statistical...
Generation of an Empirical Soil Moisture Initialization and Its Potential Impact on Subseasonal Forecasting Skill of Continental Precipitation and Air Temperature
The effect of the PAR technique on the model soil moisture estimates is evaluated using the Global Soil Wetness Project Phase 2 (GSWP-2) multimodel analysis product (used as a proxy for global soil moisture observations) and actual in...
The plane-parallel hypothesis (PPH) used to approximate clouds in global climate models neglects the 3-D effects of clouds. Such effects can contribute as much as 20 Wm-2 to the downward longwave flux at the surface. Several...
Prior to and after attending either a 2 day or 5 day out of school environmental education experience 406 4th students were assessed using a true and false test and a novel drawings exercise. For the drawing the students were asked to...
Idealized three-dimensional numerical simulations of deep moist convection in the presence of a symmetric midlevel vortex are analyzed to understand the evolution of system-scale vertical vorticity during the very early stages of...
This study focused on the effective use of a numerical climate model for agriculture in Florida, especially in the citrus farming region of the Florida peninsula, because of the impact of agriculture to Florida's economy. For the...
The varying tasks required for assimilating satellite radiance observations from the Atmospheric Infrared Sounder (AIRS) into the initial conditions of a numerical weather prediction model are discussed. The tangent linear and adjoint...
This dissertation consists of two complementary major sections. The first is an examination of summertime cyclone transport processes during NASA's Intercontinental Chemical Transport Experiment (INTEX-A) field campaign during Summer...
Nitrogen oxides (NOx) produced by lightning (LNOx) play an important role in atmospheric chemistry, including the formation of tropospheric ozone (O3). Chemical transport models such as the Weather Research and Forecasting (WRF-Chem)...
Floods are among the most destructive forces of nature, costing human lives and property. In order to study the causes and effects of flooding, characteristics of meteorology and hydrology must be combined. The purpose of this study is...
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.
