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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.
Statistical guidance equations are developed to determine the probability of noon to midnight lightning activity (the occurrence or non occurrence of at least one flash) in eastern Miami-Dade and Broward Counties during the warm season ...
The purpose of this study is to test a perfect prognosis scheme used to develop lightning guidance for the warm season (May-September) for three regions of the country (Colorado, Washington, D.C., and Oregon). This guidance product is...
Anthropogenic pollution impacts many of the Earth's natural processes. Therefore, understanding the mechanisms that transport pollutants from the surface to the free atmosphere is important for understanding the chemical composition of...
Five years of cloud-to-ground (CG) lightning data (2002 – 2006) from the National Lighting Detection Network (NLDN) are examined to describe the nature of CG lightning in Florida. Our focus is on positive CG lightning (+CG; i.e., that...
Tornado reports are combined with hurricane data to generate a dataset of tornadoes associated with tropical cyclones affecting the coastal Gulf of Mexico and Florida's East Coast between 2000 – 2008. A pool of 28 potential predictors of...
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...
The U.S. Air Force's 45th Weather Squadron (45WS) seeks improved forecasts of lightning cessation at the Kennedy Space Center (KSC) and Cape Canaveral Air Force Station (CCAFS) in Florida. The 45WS currently keeps lightning advisories...
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...
The goal of this research is to describe and quantify the role of deep convection within the Strait of Malacca (hereafter referred to as the "Strait" a part of the Maritime Continent in Southeast Asia) on the long-range transport of ship...
Atmospheric water vapor is a potent greenhouse gas, and its variations in the upper troposphere and lower stratosphere (UTLS) have important climate impacts. The water vapor budget of tropical cyclones (TCs) and their impact on the UTLS...
Determining the Characteristics of Anvil and Thunderstorm Lightning for Use in the Lightning Launch Commit Criteria at Cape Canaveral Air Force Station and Kennedy Space Center
The 45th Weather Squadron (45WS) provides weather support to America's space program at Florida's Cape Canaveral Air Force Station (CCAFS), Kennedy Space Center (KSC), and Patrick Air Force Base (PAFB). Since CCAFS/KSC lies within...
The impact of including Sea Surface Temperatures (SSTs) of differing horizontal grid spacings in simulations of river and sea breeze related weather has not been studied extensively in the Cape Canaveral area of Florida. This study...
The need for a high-resolution precipitation database over Florida is evident by the ever-increasing impact of water resources on society. The Multisensor Precipitation Estimator (MPE) software was developed by the National Weather...
This study evaluates the impacts of two different precipitation types on stage heights from a fully integrated and distributed, physically based hydrologic model - MIKE SHE. Simulations using a network of South Florida Water Management...
Improving lightning cessation forecasts is important to operations of the 45th Weather Squadron (45WS) at Kennedy Space Center (KSC). If lightning advisories can be cancelled closer to the time that cessation actually occurs without...
The Asian summer monsoon is a dominant feature of the global circulation. The upper-level anticyclone (ULAC) associated with the Asian summer monsoon circulation stands out vividly in satellite observations of trace gases. The ULAC also...
Deep convective clouds exert an important impact on the chemical composition of the upper troposphere and lower stratosphere (UTLS) since they can rapidly transport aerosols and chemical species from the planetary boundary layer (PBL) to...
The National Aeronautics and Space Administration (NASA) conducted the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission during 2008 as a part of the International Polar Year (IPY). The...
This study evaluates the impacts of two types of rainfall input on simulated streamflow using a specialized, fully-distributed hydrologic model—the Watershed Assessment Model (WAM). We compare gauge-only Thiessen polygon input data with...
Tropical cyclone (TC) forecasts rely heavily on output from numerical models. Each model in the suite of models used by forecasters has its own strengths and weaknesses. Some research has investigated the skill of the various models with...
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...
Almost daily summer time thunderstorms in central Florida frequently halt outdoor operations, requiring that one wait some prescribed time after an observed lightning flash to safely resume activities. This is an especially important...
Cloud-to-ground lightning data from the National Lightning Detection Network during the 14-year period 1989-2002 are used to create a warm season lightning climatology for the northern Gulf Coast. Days are separated into five flow...
Lightning inhibits normal operating conditions at the Kennedy Space Center (KSC) and other locations, leading to inconvenience and detrimental economic impacts. Lightning cessation guidance must safely protect lives and infrastructure....
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...
Tornadoes in the southeastern United States frequently occur with quasi-linear convective systems (QLCSs, also referred to as squall lines). Studies have shown that the non-descending mode of tornadogenesis (i.e., when strong rotation...
Electric Potential Gradient Behavior under Shallow Cumulus Clouds Using Electric Field Mills and Cumulus Cloud Top Vertical Growth at Kennedy Space Center and Cape Canaveral Air Force Station
Kennedy Space Center (KSC) at the Cape Canaveral Air Force Station (CCAFS) launches spacecraft for NASA and private companies throughout the year. Since spacecraft are expensive to build and launch, a complicated set of guidelines has...
During the austral spring months of September and October when biomass burning is prevalent in the Southern Hemisphere, long-range transport can move the biomass burning byproducts from southern Africa to the Pacific Basin....
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...
Improved knowledge of thunderstorm behavior near the end of its lifecycle is essential to improving the prediction of lightning cessation. This study documents the characteristics of decaying storms near the end of their lightning...
This study evaluates the characteristics and forecast accuracy of the Arctic Oscillation (AO) Index on an intraseasonal time scale. The Arctic Oscillation is a natural pattern of time varying sea-level pressure anomalies that is one of...
This study utilizes the FLEXPART Lagrangian Particle Dispersion Model that was adapted to ingest output from the Weather Research and Forecasting (WRF) meteorological model. We perform four series of simulations over Iran and surrounding...
Kennedy Space Center and Cape Canaveral Air Force Station (KSC/CCAFS) experience thunderstorms on an almost daily basis during the warm season (May through September). Most thunderstorms occur in the afternoon and are accurately forecast...
Non-tropical marine miniature supercells are storms that occur in the southeastern United States and over large bodies of water, such as the Gulf of Mexico. Those that form offshore of the Florida Panhandle prompt many special marine...
This study examines differences between rain gauge precipitation estimates and those from the National Weather Service's (NWS's) Multi-sensor Precipitation Estimator (MPE) which blends hourly gauge data with estimates from NWS radars...
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.
