Download or read book Western Pacific Tropical Cyclone Adaptive Observing of Inner Core Life cycle Structure and Intensity Change written by and published by . This book was released on 2009 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major goals for this project are three-fold: 1) provide a quality-controlled WC-130J airborne observation data set for the flights conducted during the Tropical Cyclone Structure 2008 field program (TCS-08), 2) diagnose the interaction of mature Western Pacific (WPAC) tropical cyclones (TCs) with their underlying ocean features and provide new observations simultaneously, both within the TC itself as well as the ocean below, to the developing Naval Research Laboratory (NRL) coupled TC modeling effort (COAMPS(tm)1-TC) and 3) utilize TCS-08 field program datasets to improve understanding of TC life cycle, especially genesis stage and rapid intensification mature-stage episodes associated with oceanic and large-scale atmospheric environmental changes.

Download or read book Tropical cyclone intensity and structure changes Theories observations numerical modeling and forecasting written by Eric Hendricks and published by Frontiers Media SA. This book was released on 2023-09-29 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Varying Structure and Intensity Change Characteristics of Four Western North Pacific Tropical Cyclones written by Cecilia A. Askue and published by . This book was released on 1984 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observational case studies of four tropical cyclones (Ellis, Hope, Judy, and Roger) from birth to decay are made using a variety of data sources from the First GARP Global Experiment (FGGE) year (1979). Each of these cyclones had uniquely different characteristics. Two became supertyphoons, one only a weak typhoon, and one only a tropical storm with a strong outer circulation. Two recurved, and two did not recurve. Information was derived from a combination of European Centre for Medium Range Weather Forecasts (ECMWF) large scale objective analyses, Joint Typhoon Warning Center (JTWC) Guam manual analyses, National Climatic Center (NCC) analyses published by the National Oceanic and Atmospheric Administration (NOAA), United States Air Force (USAF) aircraft reconnaissance data, and U.S. Defense Meteorological Satellite Program (DMSP) military satellite imagery. The combination of these rich data sources allowed a quantitative description of both large and small scale features. Emphasis is placed on cyclone structure and intensity change. Quantitative assessments of the varying relationships between inner and outer radii wind parameters are made. Preliminary results show the importance of the large scale (radius greater than seven degrees) environment in determining cyclone genesis and the importance of upper tropospheric outflow patterns in determining cyclone inner-core intensity change.

Download or read book Tropical Cyclones written by Roger K. Smith and published by Elsevier. This book was released on 2023-09-22 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical cyclones are a major threat to life and property, even in the formative stages of their development. They include a number of different hazards that individually can cause significant impacts, such as extreme winds, storm surge, flooding, tornadoes, and lightning. Tropical Cyclones: Observations and Basic Processes provides a modern overview of the theory and observations of tropical cyclone structure and behavior. The book begins by summarizing key observations of the structure, evolution, and formation of tropical cyclones. It goes on to develop a theoretical foundation for a basic understanding of tropical cyclone behavior during the storm’s life cycle. Horizontally two-dimensional dynamics of vortex motion and other non-axisymmetric features are considered first before tackling the axisymmetric balance dynamics involving the overturning circulation. Following a review of moist convective processes, later chapters focus mainly on a range of three-dimensional aspects of the tropical cyclone life cycle. Building from first principles, the book provides a state-of-the-art summary of the fundamentals of tropical cyclones aimed at advanced undergraduates, graduate students, tropical meteorologists, and researchers. Members of the Royal Meteorological Society are eligible for a 35% discount on all Developments in Weather and Climate Science series titles. See the RMetS member dashboard for the discount code. Develops a systematic foundation for understanding tropical cyclone dynamics and thermodynamics in two and three dimensions Provides a detailed appraisal of steady-state models and the widely accepted, but enigmatic, WISHE intensification theories Applies the new ideas developed in the book to a range of basic problems, including observational tests of the theory

Download or read book An Analysis of the Structure and Dynamics of Inner Core Precipitation Features in a Tropical Cyclone written by Anthony Carl Didlake (Jr.) and published by . This book was released on 2012 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airborne Doppler radar observations of the stationary rainband complex and secondary eyewall in Hurricane Rita (2005) were analyzed to better understand the inner-core dynamics of tropical cyclones. In the upwind end of the rainband complex, convective cells displayed kinematic structures that varied with radius. Cells at smaller radii contained a low-level tangential jet constrained in altitude largely by tangential acceleration due to angular momentum conservation, while cells at larger radii contained a low-level and/or midlevel jet determined jointly by angular momentum conservation and vertical advection. These variations are attributable to vortex-scale dynamics in which convective buoyancy (associated with vertical advection) and vertical shear of the radial wind (associated with angular momentum conservation) change with radius. With jets constrained to low altitudes, inner cells are more likely to increase low-level convergence and amplify convection, possibly influencing the formation of a secondary eyewall. In the downwind end of the rainband complex, collapsing convective cells formed a mesoscale stratiform rainband that contained rising radial outflow within the stratiform cloud layer. Below the cloud layer, descending radial inflow was driven by horizontal buoyancy gradients, and thus horizontal vorticity generation, introduced by regions of sublimational and melting cooling. This inflow advected higher angular momentum inward, which resulted in the development of a midlevel tangential jet and broadening of the tangential wind field. This circulation may have also contributed to ventilation of the eyewall as inflow of low-entropy air continued past the rainband in both the boundary layer and midlevels. The stationary rainband complex soon evolved into a secondary eyewall, consisting of a ring of heavy precipitation outside the pre-existing eyewall. Enhanced radial outflow was located just above the boundary layer which modified the deeper overturning circulation of the secondary eyewall. This outflow was associated with a low-level tangential wind maximum which was strongly supergradient, mimicking the low-level circulation of the primary eyewall. Axisymmetric and asymmetric processes contributed comparably to strengthening the secondary eyewall tangential wind maximum. The evolution of these inner-core features likely played an important role in modifying the structure and intensity of the total vortex.

Download or read book Tropical Cyclone Origin Movement and Intensity Characteristics Based on Data Compositing Techniques written by W. M. Gray and published by . This book was released on 1979 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date results of recent tropical cyclone research at Colorado State University are presented. Particular attention is paid to new findings which impact on tropical cyclone analysis and forecasting efforts. Observational studies using large amounts of composited rawinsonde, satellite, and aircraft flight data have been performed to analyze global aspects of tropical cyclone occurrences, physical processes of tropical cyclone genesis, tropical cyclone intensity change, environmental factors influencing tropical cyclone turning motion 24-36 hours before the turn takes place, tropical cyclone intensity determination from upper tropospheric reconnaissance, and the diurnal variations of vertical motion in tropical weather systems. (Author).

Download or read book Inner Core Asymmetric Structures and Tropical Cyclone Intensity written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronic reproduction.

Download or read book Global Perspectives On Tropical Cyclones From Science To Mitigation written by Johnny C L Chan and published by World Scientific. This book was released on 2010-04-30 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a completely rewritten, updated and expanded new edition of the original Global Perspectives on Tropical Cyclones published in 1995. It presents a comprehensive review of the state of science and forecasting of tropical cyclones together with the application of this science to disaster mitigation, hence the tag: From Science to Mitigation.Since the previous volume, enormous progress in understanding tropical cyclones has been achieved. These advances range from the theoretical through to ever more sophisticated computer modeling, all underpinned by a vast and growing range of observations from airborne, space and ocean observation platforms. The growth in observational capability is reflected by the inclusion of three new chapters on this topic. The chapter on the effects of climate change on tropical cyclone activity is also new, and appropriate given the recent intense debate on this issue. The advances in the understanding of tropical cyclones which have led to significant improvements in forecasting track, intensity, rainfall and storm surge, are reviewed in detail over three chapters. For the first time, a chapter on seasonal prediction is included. The book concludes with an important chapter on disaster mitigation, which is timely given the enormous loss of life in recent tropical cyclone disasters.World Scientific Series on Asia-Pacific Weather and Climate is indexed in SCOPUS.

Download or read book Environmental Influences on Rapid Intensity Changes in Tropical Cyclones a Case Study written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hurricane Bret underwent a rapid intensification (RI) and subsequent weakening between 1200 UTC August 21 and 1200 UTC August 22, 1999, before it made landfall as a category 3 hurricane on the Texas coast 12 h later. Its minimum sea-level pressure dropped 35 hPa from 979 to 944 hPa within 24 h. During this period, aircraft of the National Oceanographic and Atmospheric Administration (NOAA) flew several research missions that sampled the environment and inner core of the storm. These data sets combined with gridded data from the National Centers for Environmental Prediction's (NCEP) Global Model and the National Center for Atmospheric Research (NCAR) reanalyses are used to document the atmospheric and oceanic environments of the tropical cyclone (TC) as well as their relation to the observed structural and intensity changes. Bret's RI was linked to movement over a warm ocean eddy and high sea surface temperatures (SSTs) in the Gulf of Mexico coupled with a simultaneous decrease in vertical wind shear. SSTs at the beginning of the storm2s RI were approximately 29 degrees Celcius and steadily increased to 30 degrees Celcius as it moved northward. The vertical wind shear relaxed to less than 10 kt during this time. Mean values of oceanic heat content (OHC) beneath the storm were about 20 % higher at the beginning of the RI period than 6 h before. Cooling of near-coastal shelf waters (to between 25 and 26 degrees Celcius) by pre-storm mixing combined with an increase in vertical wind shear were responsible for the weakening of the storm. The available observations suggested that intrusion of dry air into the circulation core did not contribute to the intensity evolution. In order to quantitatively describe the influence of environmental conditions on the intensity forecast, sensitivity studies with the Statistical Hurricane Intensity Prediction Scheme (SHIPS) model were conducted. Four different cases with modified vertical wind shear and/or SSTs were studied. Differences between all cases were relatively small due to the model design, but much cooler prescribed SSTs resulted in the greatest intensity changes. Model runs with idealized environmental conditions demonstrated the model2s general lack of capability to forecast RIs and also stressed the need of more accurate SST observations in the coastal shelf regions when predicting the intensity of landfalling TCs.

Download or read book Tropical Cyclone Structure and Intensity Change written by and published by . This book was released on 1998 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term goals of our research are to understand the interactions between tropical cyclones and their surroundings, and how such interactions influence tropical cyclone structure and intensity. The primary objective of this proposal was to understand the interactions of upper tropospheric potential vorticity centers and tropical cyclones, and to develop a "path to operations" that will allow prediction of tropical cyclone intensity change during such interactions. This objective is an extension of our previous ONR-funded work. The second objective was to understand the mechanisms behind the clustering of tropical cyclone occurrence in time, with the ultimate goal of predicting the presence of multiple tropical cyclones in advance. This represents a new initiative. Early studies have been for the eastern Pacific Ocean, but are now being extended to the western Pacific.

Download or read book Tropical Cyclone Intensity Change written by George Robert Alvey and published by . This book was released on 2015 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Western North Pacific Tropical Cyclone Formation and Structure Change in TCS 08 and TCS 08 Field Experiment Support written by and published by . This book was released on 2010 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term goal of this project is to develop a better understanding of mesoscale and synoptic-scale processes associated with the entire life cycle of tropical cyclones in the western North Pacific. The inability to correctly identify tropical cyclone formation over the period of 24-48 hours poses a threat to shore and afloat assets across the western North Pacific. Furthermore, once a tropical cyclone has formed, the predictability of structure changes during intensification of the cyclone is very low, which is due to complex physical processes that vary over a wide range of space and time scales. Periods of reduced predictability occur throughout the tropical cyclone life cycle, which includes the decaying stage. Because decaying tropical cyclones often transition to a fast-moving and rapidly-developing extratropical cyclone that may contain gale-, storm-, or hurricane-force winds, there is a need to improve understanding and prediction of the extratropical transition phase of a decaying tropical cyclone. The structural evolution of the transition from a tropical to extratropical circulation involves rapid changes to the wind, cloud, and precipitation patterns that potentially impact maritime and shore-based facilities. The research being conducted on the comprehensive data sets gathered during the TCS-08 field program will result in increased accuracy associated with the prediction of tropical cyclone formation, intensification, and structural changes.

Download or read book Intensity Changes of Tropical Cyclones in the Western North Pacific Ocean During 1960 1969 written by and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six-hourly observations containing 18 parameters of tropical storms and typhoons in the western north Pacific Ocean during the period 1960 through 1969 were examined. The data were composited into four periods: before and after maximum intensity for East-West moving storms, and before and after recurvature for recurving storms. Monthly and seasonal variations of tropical cyclone intensity, speed of movement and size were examined. Correlation coefficients of the 18 tropical storm and typhoon parameters were computed for each of the four composited periods of study. (Author).

Download or read book Intensity Changes of Tropical Cyclones in the Western North Pacific Ocean During 1960 1969 written by Kenneth Raymond Liechty and published by . This book was released on 1972 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six-hourly observations containing 18 parameters of tropical storms and typhoons in the western north Pacific Ocean during the period 1960 through 1969 were examined. The data were composited into four periods: before and after maximum intensity for East-West moving storms, and before and after recurvature for recurving storms. Monthly and seasonal variations of tropical cyclone intensity, speed of movement and size were examined. Correlation coefficients of the 18 tropical storm and typhoon parameters were computed for each of the four composited periods of study. (Author).

Download or read book Abstracts for the AGU Western Pacific Geophysics Meeting written by and published by . This book was released on 2004 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Western Pacific Tropical Cyclone Reanalysis With the NRL Atmospheric Variational Data Assimilation System written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term goal of this project is to improve the prediction of tropical cyclone (TC) genesis, structure and intensity changes through improved initial condition and data assimilation technique. The accurate prediction of TC genesis, structure and intensity changes is critical to Navy missions and civilian activities in coastal areas. Due to sparse observational coverage over the open ocean, a key element of typhoon data assimilation is how to assimilate the satellite products such as Advanced Microwave Sounding Unit (AMSU), AIRS, and SSMIS into the model initial condition. These new satellite products provide high-resolution 3-dimessional temperature and moisture fields and rain rate profiles.

Download or read book Radar and Atmospheric Science written by Roger Wakimoto and published by Springer. This book was released on 2015-03-30 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book if a tribute to one of the leading scientists in meteorology, Dr. David Atlas. It was written by a group of specialists and presented at a symposium to honor Dr. Atlas’ life and career as meteorologist. It serves as a comprehensive resource for scientists and educators, and also as an inspiring historical record of scientific research and important discoveries in the field of meteorology.