Observations of Mesoscale Convective Systems During Tropical Cyclone Genesis


Book Description

A better understanding of the role mesoscale convective systems (MCS) play in the formation stages of tropical cyclones will increase the ability to predict their occurrence and motion. This thesis employs high resolution satellite imagery to observe the Interaction between MCSs and their environment. Specifically, thirteen cases of tropical disturbances that eventually developed Into tropical cyclones are analyzed to determine the role of MCSs in increasing the system organization. Following two conceptual models developed during the Tropical Cyclone Motion (TCM-93) mini-field experiment, each tropical cyclone is classified according to the relative importance of MCS activity to its development. Both conceptual models are verified through analysis and a third model is created to account for tropical cyclone developments that share features of the previous two models. An alternate approach is proposed for determining tropical system organization using only visible and infrared satellite imagery.




Observation of Mesoscale Convective Systems During Tropical Cyclone Genesis


Book Description

A better understanding of the role mesoscale convective systems (MCS) play in the formation stages of tropical cyclones will increase the ability to predict their occurrence and motion. This thesis employs high-resolution satellite imagery to observe the interaction between MCSs and their environment. Specifically, thirteen cases of tropical disturbances that eventually developed into tropical cyclones are analyzed to determine the role of MCSs in increasing the system organization. Following two conceptual models developed during the Tropical Cyclone Motion (TCM-93) mini-field experiment, each tropical cyclone is classified according to the relative importance of MCS activity to its development. Both conceptual models are verified through analysis and a third model is created to account for tropical cyclone developments that share features of the previous two models. An alternate approach is proposed for determining tropical system organization using only visible and infrared satellite imagery.




Observations of Mesoscale Convective Systems During Tropical Cyclone Genesis


Book Description

A better understanding of the role mesoscale convective systems (MCS) play in the formation stages of tropical cyclones will increase the ability to predict their occurrence and motion. This thesis employs high resolution satellite imagery to observe the Interaction between MCSs and their environment. Specifically, thirteen cases of tropical disturbances that eventually developed Into tropical cyclones are analyzed to determine the role of MCSs in increasing the system organization. Following two conceptual models developed during the Tropical Cyclone Motion (TCM-93) mini-field experiment, each tropical cyclone is classified according to the relative importance of MCS activity to its development. Both conceptual models are verified through analysis and a third model is created to account for tropical cyclone developments that share features of the previous two models. An alternate approach is proposed for determining tropical system organization using only visible and infrared satellite imagery.




Operations Plan for the Tropical Cyclone Motion (TCM-92) Mini-field Experiment


Book Description

A WC-130 instrumented aircraft will be deployed in the Western North Pacific region near Guam during 21 July-18 August 1992 to obtain in situ measurements in Mesoscale Convective Systems embedded in tropical cyclones. Four hypotheses related to different tropical cyclone track modification or genesis mechanisms will be tested. The scientific basis for these hypotheses is described and observations and models of midlatitude mesoscale convective systems are reviewed to provide a basis for planning the WC-130 missions. Aircraft operations and the Experiment Operations Center are described, along with tentative flight tracks. Descriptions of the real-time observations and the data to be archived for post-experiment analyses are provided.







Cloud Dynamics


Book Description

Clouds play a critical role in the Earth's climate, general atmospheric circulation, and global water balance. Clouds are essential elements in mesoscale meteorology, atmospheric chemistry, air pollution, atmosphericradiation, and weather forecasting, and thus must be understood by any student or researcher in the atmospheric sciences.Cloud Dynamics provides a skillful and comprehensive examination of the nature of clouds--what they look like and why, how scientists observe them, and the basic dynamics and physics that underlie them. The book describes the mechanics governing each type of cloud that occurs in Earth's atmosphere, and the organization of various types of clouds in larger weather systems such as fronts, thunderstorms, and hurricanes.This book is aimed specifically at graduate students, advanced undergraduates, practicing researchers either already in atmospheric science or moving in from a related scientific field, and operational meteorologists. Some prior knowledge of atmospheric dynamics and physics is helpful, but a thorough overview of the necessary prerequisites is supplied. - Provides a complete treatment of clouds integrating the analysis of air motions with cloud structure, microphysics, and precipitation mechanics - Describes and explains the basic types of clouds and cloud systems that occur in the atmosphere-fog, stratus, stratocumulus, altocumulus, altostratus, cirrus, thunderstorms, tornadoes, waterspouts, orographically induced clouds, mesoscale convection complexes, hurricanes, fronts, and extratropical cyclones - Presents a photographic guide, presented in the first chapter, linking the examination of each type of cloud with an image to enhance visual retention and understanding - Summarizes the fundamentals, both observational and theoretical, of atmospheric dynamics, thermodynamics, cloud microphysics, and radar meteorology, allowing each type of cloud to be examined in depth - Integrates the latest field observations, numerical model simulations, and theory - Supplies a theoretical treatment suitable for the advanced undergraduate or graduate level




Microwave Observations of Mesoscale Convective Systems During Tropical Cyclone Genesis in the Western North Pacific


Book Description

A better understanding of the role mesoscale convective systems (MCS) play in the genesis stages of tropical cyclones will increase the ability to predict their formation. This thesis employs polar-orbiter microwave and geostationary infrared satellite imagery to document MCS structure and evolution during tropical cyclone genesis. Microwave imagery at frequencies of 19.35 GHz and 85.5 GHz are used to define convective and stratiform cloud areal amounts, percent coverage, and time-integrated rain rates. Collocations with geostationary infrared images are used to calibrate that imagery so that the hourly values may be calculated until another microwave image is available. Specifically, seven MCSs in two disturbances that eventually developed into tropical cyclones were analyzed. Two MCSs in non-developing storms are also described for contrast.




ONR Tropical Cyclone Motion Research Initiative


Book Description

The Office of Naval Research Tropical Cyclone Motion initiative is a five-year program to improve understanding of tropical cyclone motion. On 31 August-1 September 1989, a workshop was held in Monterey, California to consider the characteristics of data assimilation systems for tropical analyses. The focus is on special considerations that might apply in preparing a set of final analyses of the observations to be obtained in the Tropical Cyclone Motion field experiment during August and September 1990. The basic characteristics of the analysis grid, handling of the special experimental observations, objective analysis considerations, data assimilation procedures, inclusion of bogus observations, initialization techniques, and other considerations are summarized. Keywords: Meteorological studies; Cyclones; Tropical cyclone motion; Data assimilation; Typhoon motion. (kt).




Mesoscale Meteorology in Midlatitudes


Book Description

Mesoscale Meteorology in Mid-Latitudes presents the dynamics of mesoscale meteorological phenomena in a highly accessible, student-friendly manner. The book's clear mathematical treatments are complemented by high-quality photographs and illustrations. Comprehensive coverage of subjects including boundary layer mesoscale phenomena, orographic phenomena and deep convection is brought together with the latest developments in the field to provide an invaluable resource for mesoscale meteorology students. Mesoscale Meteorology in Mid-Latitudes functions as a comprehensive, easy-to-use undergraduate textbook while also providing a useful reference for graduate students, research scientists and weather industry professionals. Illustrated in full colour throughout Covers the latest developments and research in the field Comprehensive coverage of deep convection and its initiation Uses real life examples of phenomena taken from broad geographical areas to demonstrate the practical aspects of the science