Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Atmospheric Sciences (31)
- Climate (24)
- Environmental Sciences (16)
- Earth Sciences (15)
- Fresh Water Studies (12)
-
- Hydrology (11)
- Water Resource Management (10)
- Environmental Monitoring (9)
- Natural Resources Management and Policy (9)
- Other Environmental Sciences (9)
- Other Earth Sciences (8)
- Sustainability (8)
- Environmental Indicators and Impact Assessment (7)
- Natural Resources and Conservation (7)
- Oceanography (5)
- Engineering (4)
- Arts and Humanities (3)
- Chemistry (3)
- History (3)
- Other Oceanography and Atmospheric Sciences and Meteorology (3)
- Physics (3)
- Social and Behavioral Sciences (3)
- Statistics and Probability (3)
- United States History (3)
- Aviation (2)
- Civil and Environmental Engineering (2)
- Education (2)
- Institution
-
- University of Nebraska - Lincoln (12)
- San Jose State University (9)
- Western Kentucky University (8)
- Embry-Riddle Aeronautical University (6)
- University at Albany, State University of New York (5)
-
- Selected Works (4)
- Chapman University (3)
- City University of New York (CUNY) (2)
- Old Dominion University (2)
- Valparaiso University (2)
- Western University (2)
- William & Mary (2)
- Air Force Institute of Technology (1)
- Florida International University (1)
- SelectedWorks (1)
- The University of Southern Mississippi (1)
- University of Nevada, Las Vegas (1)
- University of Southern Maine (1)
- Utah State University (1)
- Keyword
-
- Meteorology (7)
- Articles (6)
- Convection (Meteorology) (4)
- Hurricanes (4)
- Modeling (3)
-
- Weather (3)
- Climate Models (2)
- Convection (2)
- Diagnostics (2)
- Hurricane (2)
- Intensity (2)
- Interdecadal Variability (2)
- Lower stratosphere (2)
- Maps (2)
- Model (2)
- Model Comparison (2)
- Model Errors (2)
- Monsoon (2)
- North America (2)
- Ocean-atmosphere interaction (2)
- Precipitation Radar (2)
- Satellite (2)
- South America (2)
- Statistical Techniques (2)
- Synoptic climatology (2)
- ThOR (2)
- Thunderstorms (2)
- Tropical cyclones (2)
- Aeronet Sun (1)
- Africa (1)
- Publication
-
- Faculty Publications, Meteorology and Climate Science (6)
- Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research (5)
- Legacy Theses & Dissertations (2009 - 2024) (5)
- Droughtscape, Quarterly Newsletter of NDMC, 2007- (4)
- Publications (4)
-
- Eugene C. Cordero (3)
- Kevin Law (3)
- MSS Finding Aids (3)
- Biology, Chemistry, and Environmental Sciences Faculty Articles and Research (2)
- Chemistry & Biochemistry Faculty Publications (2)
- Electronic Thesis and Dissertation Repository (2)
- Mahurin Honors College Capstone Experience/Thesis Projects (2)
- Masters Theses & Specialist Projects (2)
- National Drought Mitigation Center: Publications (2)
- Publications and Research (2)
- Symposium on Undergraduate Research and Creative Expression (SOURCE) (2)
- Applied Aviation Sciences - Daytona Beach (1)
- Auroop R. Ganguly (1)
- Civil and Environmental Engineering and Construction Faculty Research (1)
- Dissertations (1)
- Dissertations, Theses, and Masters Projects (1)
- FIU Electronic Theses and Dissertations (1)
- HPRCC Personnel Publications (1)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (1)
- Plants, Soils, and Climate Faculty Publications (1)
- Presentations (1)
- School of Graduate Studies - Daytona Beach (1)
- Sustainable Communities Capacity Building (1)
- Theses and Dissertations (1)
- University Scholar Series (1)
- Publication Type
- File Type
Articles 1 - 30 of 64
Full-Text Articles in Meteorology
Information Content Of Seasonal Forecasts In A Changing Climate, Nir Krakauer, Michael D. Grossberg, Irina Gladkova, Hannah Aizenman
Information Content Of Seasonal Forecasts In A Changing Climate, Nir Krakauer, Michael D. Grossberg, Irina Gladkova, Hannah Aizenman
Publications and Research
We study the potential value to stakeholders of probabilistic long-term forecasts, as quantified by the mean information gain of the forecast compared to climatology. We use as a case study the USA Climate Prediction Center (CPC) forecasts of 3-month temperature and precipitation anomalies made at 0.5-month lead time since 1995. Mean information gain was positive but low (about 2% and 0.5% of the maximum possible for temperature and precipitation forecasts, resp.) and has not increased over time. Information-based skill scores showed similar patterns to other, non-information-based, skill scores commonly used for evaluating seasonal forecasts but tended to be smaller, suggesting …
An Examination Of Physical And Empirical Approaches In Forecasting Nonconvective Wind Gusts, Jeramie Lippman
An Examination Of Physical And Empirical Approaches In Forecasting Nonconvective Wind Gusts, Jeramie Lippman
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Nonconvective winds can be a dangerous and costly weather hazard. For example, over a ten year span from 2002 to 2011, there were over 200 fatalities and nearly 1,000 injuries, as well as over 6.4 billion dollars in monetary losses due to high, nonconvective winds. An important subset to nonconvective winds is the nonconvective wind gust. When winds are already relatively strong, a sudden wind gust can magnify already existing hazards. Three different methods were evaluated to determine if either of two physically based algorithms can outperform an empirical algorithm. The two physically based methods were the Wind Gust Estimate …
Trends In The Ams Education Symposium And Highlights From 2012, Rajul Pandya, Donna Charlevoix, Eugene Cordero, David Smith, Sepi Yalda
Trends In The Ams Education Symposium And Highlights From 2012, Rajul Pandya, Donna Charlevoix, Eugene Cordero, David Smith, Sepi Yalda
Eugene C. Cordero
The Department of Meteorology (now Atmospheric Sciences) at the University of Utah faced reductions in state funding in 2008 that reduced support for nontenured instructors at the same time that the faculty were becoming increasingly successful obtaining federally supported research grants. A faculty retreat and subsequent discussions led to substantive curriculum changes to modernize the curriculum, enhance course offerings for undergraduate and graduate students, and improve the overall efficiency of the academic program. Maintaining discipline standards and existing teaching loads were important constraints on these changes. Key features of the curriculum revisions for undergraduate majors included eliminating a very rigid …
Trends In The Ams Education Symposium And Highlights From 2012, Rajul Pandya, Donna Charlevoix, Eugene Cordero, David Smith, Sepi Yalda
Trends In The Ams Education Symposium And Highlights From 2012, Rajul Pandya, Donna Charlevoix, Eugene Cordero, David Smith, Sepi Yalda
Faculty Publications, Meteorology and Climate Science
The Department of Meteorology (now Atmospheric Sciences) at the University of Utah faced reductions in state funding in 2008 that reduced support for nontenured instructors at the same time that the faculty were becoming increasingly successful obtaining federally supported research grants. A faculty retreat and subsequent discussions led to substantive curriculum changes to modernize the curriculum, enhance course offerings for undergraduate and graduate students, and improve the overall efficiency of the academic program. Maintaining discipline standards and existing teaching loads were important constraints on these changes. Key features of the curriculum revisions for undergraduate majors included eliminating a very rigid …
University Scholar Series: Craig B. Clements, Craig B. Clements
University Scholar Series: Craig B. Clements, Craig B. Clements
University Scholar Series
Groundbreaking Research on Wildfire Weather
On November 28, 2012 Craig B. Clements spoke in the University Scholar Series hosted by Provost Ellen Junn at the Dr. Martin Luther King, Jr. Library. Craig Clements is an associate professor in the Department of Meteorology and Climate Science who received a $900,000 National Science Foundation CAREER grant for his work in tracking atmospheric conditions in and around wildfires. His work will better help predict wildfire behavior and conditions that could lead to increased wildfire danger.
Water Vapor And Temperature Comparisons Between Airs/Amsu-A And In Situ Aircraft Observations From 87°N To 67°S And Sensitivities To Spatial And Temporal Differences, Minghui Diao, Loayeh Jumbam, Justin Sheffield, Eric Wood, Mark Zondlo
Water Vapor And Temperature Comparisons Between Airs/Amsu-A And In Situ Aircraft Observations From 87°N To 67°S And Sensitivities To Spatial And Temporal Differences, Minghui Diao, Loayeh Jumbam, Justin Sheffield, Eric Wood, Mark Zondlo
Faculty Publications, Meteorology and Climate Science
No abstract available.
Comparison And Validation Of Tropical Rainfall Measuring Mission (Trmm) Rainfall Algorithms In Tropical Cyclones, Joseph P. Zagrodnik
Comparison And Validation Of Tropical Rainfall Measuring Mission (Trmm) Rainfall Algorithms In Tropical Cyclones, Joseph P. Zagrodnik
FIU Electronic Theses and Dissertations
Tropical Rainfall Measuring Mission (TRMM) rainfall retrieval algorithms are evaluated in tropical cyclones (TCs). Differences between the Precipitation Radar (PR) and TRMM Microwave Imager (TMI) retrievals are found to be related to the storm region (inner core vs. rainbands) and the convective nature of the precipitation as measured by radar reflectivity and ice scattering signature. In landfalling TCs, the algorithms perform differently depending on whether the rainfall is located over ocean, land, or coastal surfaces. Various statistical techniques are applied to quantify these differences and identify the discrepancies in rainfall detection and intensity. Ground validation is accomplished by comparing the …
An Analysis Of Deep Convection Initiation Environments, Noah Lock
An Analysis Of Deep Convection Initiation Environments, Noah Lock
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Initiation is the part of the convective life cycle which is currently least understood and least well forecast. The inability to properly forecast the timing and/or location of deep convection initiation degrades forecast skill, especially during the warm season. The goals of this research are examine the spatiotemporal distribution of thunderstorm initiation points and to determine which atmospheric parameters (and ultimately processes) are most important for the initiation of thunderstorms. The spatiotemporal distribution of thunderstorm initiation points shows the expected peaks during summer and during the afternoon. The warm season also produces significant concentrations of initiation points near mountains, mainly …
Droughtscape- Fall 2012, National Drought Mitigation Center
Droughtscape- Fall 2012, National Drought Mitigation Center
Droughtscape, Quarterly Newsletter of NDMC, 2007-
CONTENTS
Director’s report ....................... 1
Updated resources ................... 1
Drought outlook and review... 2
2012 and past droughters..... 4
Summer impacts summary.... 6
Urban planners and drought..... 9
USDM wins CLEAN seal... 10
Meixiu Yu's Chinese SPEI... 11
Ethiopian project..... 12
Mexican VegDRI.... 13
Drought monitor sculpture.... 14
Woolfolk, Dorothy (Gregory) (Sc 713), Manuscripts & Folklife Archives
Woolfolk, Dorothy (Gregory) (Sc 713), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid and scan (Click on "additional files" below) for Manuscripts Small Collection 713. Letter written to Marjorie Clagett, Bowling Green, Kentucky, from Dorothy (Gregory) Woolfolk, Brandenburg, Meade County, Kentucky, in which she describes the tornado that devastated the town on 3 April 1974.
Sensitivity Of Limiting Hurricane Intensity To Ocean Warmth, James B. Elsner, Sarah Strazzo, Jill C. Trepanier, Thomas H. Jagger
Sensitivity Of Limiting Hurricane Intensity To Ocean Warmth, James B. Elsner, Sarah Strazzo, Jill C. Trepanier, Thomas H. Jagger
Publications
No abstract provided.
Retrieval Of Sub-Pixel-Based Fire Intensity And Its Application For Characterizing Smoke Injection Heights And Fire Weather In North America, David Peterson
Retrieval Of Sub-Pixel-Based Fire Intensity And Its Application For Characterizing Smoke Injection Heights And Fire Weather In North America, David Peterson
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
For over two decades, satellite sensors have provided the locations of global fire activity with ever-increasing accuracy. However, the ability to measure fire intensity, know as fire radiative power (FRP), and its potential relationships to meteorology and smoke plume injection heights, are currently limited by the pixel resolution. This dissertation describes the development of a new, sub-pixel-based FRP calculation (FRPf) for fire pixels detected by the MODerate Resolution Imaging Spectroradiometer (MODIS) fire detection algorithm (Collection 5), which is subsequently applied to several large wildfire events in North America. The methodology inherits an earlier bi-spectral algorithm for retrieving sub-pixel …
General Aviation Weather Encounter Case Studies, John M. Lanicci, Massoud Bazargan, Daniel Halperin, Scott Shappell, Jaclyn Baron, Rebecca Iden, Carla Hackworth, Kali Holcomb
General Aviation Weather Encounter Case Studies, John M. Lanicci, Massoud Bazargan, Daniel Halperin, Scott Shappell, Jaclyn Baron, Rebecca Iden, Carla Hackworth, Kali Holcomb
School of Graduate Studies - Daytona Beach
This study presents a compilation of 24 cases involving general aviation (GA) pilots’ weather encounters over the continental U.S. The project team interviewed pilots who had experienced a weather encounter, and we examined their backgrounds, flight experience, and weather encounter details. Results from meteorological data analysis for each weather encounter were consistent with findings of larger GA weather accident studies in terms of the types of hazards encountered and flight phase during which the encounters occurred. Investigation of pilot weather products and the sources from which they were obtained revealed a lack of uniformity of pre-flight data sources and underutilization …
Morris, Walter B. (Sc 29), Manuscripts & Folklife Archives
Morris, Walter B. (Sc 29), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid and scan (Click on "additional files" below) for Manuscripts Small Collection 29. Photocopies of letter written by Walter B. Morris, Gallatin, Tennessee, to his brother, Eastin Morris, Fort Pickering, Tennessee, pertaining to a shower of flesh and blood near Lebanon, Tennessee, on 17 August 1841, and of an article from American Journal of Science, 1841, pertaining to the same event. Also a letter to Julia Neal regarding photocopies, 1968.
The Weather And Climate Of West Virginia, Kevin Law, H. Michael Mogil
The Weather And Climate Of West Virginia, Kevin Law, H. Michael Mogil
Kevin Law
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.
A Statistical Model To Forecast Short-Term Atlantic Hurricane Intensity, Kevin Law, Jay Hobgood
A Statistical Model To Forecast Short-Term Atlantic Hurricane Intensity, Kevin Law, Jay Hobgood
Kevin Law
An alternative 24-h statistical hurricane intensity model is presented and verified for 13 hurricanes during the 2004–05 seasons. The model uses a new method involving a discriminant function analysis (DFA) to select from a collection of multiple regression equations. These equations were developed to predict the future 24-h wind speed increase and the 24-h pressure drop that were constructed from a dataset of 103 hurricanes from 1988 to 2003 that utilized 25 predictors of rapid intensification. The accuracy of the 24-h wind speed increase models was tested and compared with the official National Hurricane Center (NHC) 24-h intensity forecasts, which …
The Impact Of Oceanic Heat Content On The Rapid Intensification Of Atlantic Hurricanes, Kevin Law
The Impact Of Oceanic Heat Content On The Rapid Intensification Of Atlantic Hurricanes, Kevin Law
Kevin Law
With the increased infrastructure and amount of people living along the United States coastline, it is imperative to improve the accuracy of Atlantic hurricane intensity forecasts. Over the last 10 years, there have been many Atlantic hurricanes, including Hurricanes Katrina and Charley that surprised many forecasters with their rapid intensification and power. The rapid intensification of tropical cyclones is the most serious aspect, when it comes to forecasting. It is generally accepted that sufficient surface ocean temperatures (approximately 26°C) are needed to produce and sustain tropical cyclone formation. However, the sea-surface temperature (SST) has shown not to be critical in …
Coastal Hurricane Damage Assessment Via Wavelet Transform Of Remotely Sensed Imagery, Ricky Carl Crowsey
Coastal Hurricane Damage Assessment Via Wavelet Transform Of Remotely Sensed Imagery, Ricky Carl Crowsey
Dissertations
This dissertation uses post storm imagery processed using wavelet transforms to investigate the capability of wavelet transform-based methods to classify post storm damage of residential areas. Five level Haar, Meyer, Symlets, and Coiflets wavelet transform decompositions of the post storm imagery are inputs to damage classification models of post hurricane and tornado damage. Hurricanes Ike, Rita, Katrina, and Ivan are examined as are the 2011 Joplin and Tuscaloosa tornadoes.
Wavelet transform-based classification methods yielded varying classification accuracies for the four hurricanes examined, ranging from 67 percent to 89 percent classification accuracy for classification models informed by samples from the storms …
Application Of The Weather Research And Forecasting (Wrf) Model To Simulate A Squall Line: Implications Of Choosing Parameterization Scheme Combinations And Model Initialization Data Sets, Mitchell Gaines
Masters Theses & Specialist Projects
On January 29-30, 2008 a squall line of thunderstorms moved through the Ohio Valley resulting in four deaths and one injury. Such events highlight the importance of accurate forecasting for public safety. Mesoscale Modeling plays an important role in any forecast of a potential squall line. The focus of this study was to examine the performance of several parameterization scheme combinations in the Weather Research and Forecasting Model version three (WRF) as they related to this event. These examinations included cloud microphysics (WRF Single-Moment 3-class, 6-class, and Goddard), cumulus parameterization (Kain-Fritsch and Bets-Miller-Janjic) and planetary boundary layer schemes (Yonsei-University and …
Droughtscape- Summer 2012, National Drought Mitigation Center
Droughtscape- Summer 2012, National Drought Mitigation Center
Droughtscape, Quarterly Newsletter of NDMC, 2007-
Contents
Director’s report ....................... 1
Drought expanse....................... 1
Upcoming ranch workshops.... 3
Drought outlook and review ... 4
Spring impacts summary ......... 6
Hawaii impact workshops........ 9
Remote sensing of drought.... 10
China workshop ...................... 12
Estimating Annual Precipitation For The Colorado River Basin Using Oceanic-Atmospheric Oscillations, Ajay Kalra, Sajjad Ahmad
Estimating Annual Precipitation For The Colorado River Basin Using Oceanic-Atmospheric Oscillations, Ajay Kalra, Sajjad Ahmad
Civil and Environmental Engineering and Construction Faculty Research
Estimating long-lead time precipitation under the stress of increased climatic variability is a challenging task in the field of hydrology. A modified Support Vector Machine (SVM) based framework is proposed to estimate annual precipitation using oceanic-atmospheric oscillations. Oceanic-atmospheric oscillations, consisting of Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), Atlantic Multidecadal Oscillation (AMO), and El Niño–Southern Oscillation (ENSO) for a period of 1900–2008, are used to generate annual precipitation estimates with a 1 year lead time. The SVM model is applied to 17 climate divisions encompassing the Colorado River Basin in the western United States. The overall results revealed that …
Green Infrastructure Resource Directory, New England Environmental Finance Center
Green Infrastructure Resource Directory, New England Environmental Finance Center
Sustainable Communities Capacity Building
Green infrastructure is an approach for managing stormwater that uses vegetation and soils to capture and treat rainwater where it falls. Unlike single-purpose gray infrastructure, green infrastructure realizes multiple benefits at once, including flood mitigation, improved water and air quality, community beautification, provision of recreational opportunities, and energy and cost savings. This resource directory is intended to help communities design, implement, fund, and monitor green infrastructure practices and programs. It was compiled by the Environmental Finance Center Network through the Capacity Building for Sustainable Communities program funded by U.S. Department of Housing and Urban Development and U.S. Environmental Protection Agency. …
Reproduction Of Twentieth Century Intradecadal To Multidecadal Surface Temperature Variability In Radiatively Forced Coupled Climate Models, Patrick T. Brown, Eugene C. Cordero, Steven A. Mauget
Reproduction Of Twentieth Century Intradecadal To Multidecadal Surface Temperature Variability In Radiatively Forced Coupled Climate Models, Patrick T. Brown, Eugene C. Cordero, Steven A. Mauget
Eugene C. Cordero
[1] Coupled Model Intercomparison Project 3 simulations that included time-varying radiative forcings were ranked according to their ability to consistently reproduce twentieth century intradecadal to multidecadal (IMD) surface temperature variability at the 5° by 5° spatial scale. IMD variability was identified using the running Mann-Whitney Z method. Model rankings were given context by comparing the IMD variability in preindustrial control runs to observations and by contrasting the IMD variability among the ensemble members within each model. These experiments confirmed that the inclusion of time-varying external forcings brought simulations into closer agreement with observations. Additionally, they illustrated that the magnitude of …
Reproduction Of Twentieth Century Intradecadal To Multidecadal Surface Temperature Variability In Radiatively Forced Coupled Climate Models, Patrick T. Brown, Eugene C. Cordero, Steven A. Mauget
Reproduction Of Twentieth Century Intradecadal To Multidecadal Surface Temperature Variability In Radiatively Forced Coupled Climate Models, Patrick T. Brown, Eugene C. Cordero, Steven A. Mauget
Faculty Publications, Meteorology and Climate Science
[1] Coupled Model Intercomparison Project 3 simulations that included time-varying radiative forcings were ranked according to their ability to consistently reproduce twentieth century intradecadal to multidecadal (IMD) surface temperature variability at the 5° by 5° spatial scale. IMD variability was identified using the running Mann-Whitney Z method. Model rankings were given context by comparing the IMD variability in preindustrial control runs to observations and by contrasting the IMD variability among the ensemble members within each model. These experiments confirmed that the inclusion of time-varying external forcings brought simulations into closer agreement with observations. Additionally, they illustrated that the magnitude of …
Caswell County, North Carolina - Weather (Sc 406), Manuscripts & Folklife Archives
Caswell County, North Carolina - Weather (Sc 406), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid and scan (Click on "Additional Files" below) for Manuscripts Small Collection 406. Notes by an unknown observer of the weather in Caswell County, North Carolina, 25 December 1844 to 6 January 1845.
Creation Of A Spatial Decision Support System As A Risk Assessment Tool Based On Kentucky Tornado Climatology, Christopher Michael Blinn
Creation Of A Spatial Decision Support System As A Risk Assessment Tool Based On Kentucky Tornado Climatology, Christopher Michael Blinn
Masters Theses & Specialist Projects
Tornadoes are one of Mother Nature’s deadliest phenomena. They affect a large region of the United States. The risk of tornadoes is contingent on dynamic atmospheric conditions that are most likely during spring but which can occur anytime of the year, making the storms challenging to forecast. Using geographical information systems (GIS), a web-based spatial decision support system (SDSS) was created to help understand the spatial dimension of tornado risk assessment. The risk values are calculated using Tornado Days rather than taking a crude density measurement. The SDSS hosts GIS web services that are displayed on an Adobe Flex application. …
A Study On The Turbulent Characteristics Within The Hurricane Boundary Layer, Sunwei Li
A Study On The Turbulent Characteristics Within The Hurricane Boundary Layer, Sunwei Li
Electronic Thesis and Dissertation Repository
As the medium between the sea surface and the upper atmosphere in a hurricane, the Hurricane Boundary Layer (HBL) plays a key role in the overall dynamics of a tropical cyclone, and therefore turbulence exchanges within the HBL deserve a thorough investi- gation. However, since it is dangerous and difficult to take direct measurements within the HBL, studies of the HBL turbulence processes based on direct observations are rare. Thanks to the newly developed dropwindsonde equipped with a Global Position System (GPS) receiver, it is now possible to measure wind velocities and other meteorological variables with an unprecedented accuracy and …
Large, Long-Lived Convective Systems Over Subtropical South America And Their Relationships With Atmospheric Teleconnections, Kyle Mattingly
Large, Long-Lived Convective Systems Over Subtropical South America And Their Relationships With Atmospheric Teleconnections, Kyle Mattingly
Mahurin Honors College Capstone Experience/Thesis Projects
This study provides a climatological assessment of persistent elongated convective systems (PECS) over subtropical South America during the austral warm seasons of 1998-2007 and a comparison of PECS frequency and physical characteristics to mesoscale convective complexes (MCCs) in the region. Relationships between the Antarctic Oscillation (AAO) and El Niño – Southern Oscillation (ENSO) teleconnections and large, long-lived convective systems (LLCSs) are explored. An average of 143 PECS and 37 MCCs occurred per warm season. PECS lasted longer on average than MCCs (17 hrs. vs. 14 hrs.) and reached a greater average maximum cloud-shield extent than MCCs (297,300 km2 vs. 256,500 …
Long-Term Changes To The Frost-Free Season As A Function Of Climatic Continentality, Ian Blaylock
Long-Term Changes To The Frost-Free Season As A Function Of Climatic Continentality, Ian Blaylock
Mahurin Honors College Capstone Experience/Thesis Projects
The beginning, end, and length of the annual frost-free season vary considerably both spatially and temporally. The continentality of the climate of a given area has a close connection with the magnitude and nature of these variations. Long term changes in the frost-free season can be divided into three distinct phases: a lengthening of the frost-free season in the early 20th century, a shortening in the mid-20th century, and a renewed, intensified lengthening from 1970 to today. While oceanic and ultraoceanic climates experience decreased incidence of frosts relative to their continental counterparts, analysis has shown that overall 20 …
Periodicities Of Peak Current And Flash Multiplicity In Cloud To Ground Lightning, Alexander R. Gibbs
Periodicities Of Peak Current And Flash Multiplicity In Cloud To Ground Lightning, Alexander R. Gibbs
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Research on lightning has been conducted on various topics including thunderstorm electrification and climatology of lightning strikes however; there are still some characteristics of lightning that are not well known, such as flash multiplicity and peak current as a function of individual thunderstorms. These characteristics are the leading cause of injuries and damage each year. This study examines a severe weather event in Minnesota on 16 September 2006, in order to determine what may cause peak current and flash multiplicity. Cycles in peak current and flash multiplicity are identified and then associated with CAPE to determine if a thunderstorm’s updraft …