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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 forecasting and modeling efforts. Observational studies using large amounts of composited rawinsonde, satellite and aircraft flight data have been performed to analyze tropical cyclone genesis, structure, energetics, intensity, intensity change, and motion. (Author).
This paper presents the results of recent tropical cyclone research at Colorado State University (CSU). Particular attention is paid to new findings which impact storm forecasting and modeling efforts. Observational studies using large amounts of composited rawinsonde, satellite and aircraft flight data have been performed to analyze tropical cyclone dynamics, energetics, intensity, intensity change, and motion. The genesis of storms from earliest stage cloud clusters was also analyzed. Numerical modeling studies on cloud cluster dynamics and the intensification of pre-storm clusters are underway. Future research in all of the above areas is planned to exploit fully the very large tropical cyclone data set which has been assembled at CSU. (Author).
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).
This book studies the pitfalls of regional climate models in simulating track and intensity of tropical cyclone over western North Pacific for the East Asian summer monsoon climate.A number of sensitivity experiments related to tropical cyclone simulation with different model configurations and model physical schemes, including model resolution, model lateral boundary condition, effect of sea surface temperature, cumulus parameterization scheme and model microphysics scheme, as well as the features and the failure of tropical cyclone simulation in regional climate models were carefully analyzed with model output with high temporal resolution, to investigate shortcomings of the models, so as to come up with better models to simulate and study tropical cyclone track and intensity.The book is suitable for graduate students in meteorology with focuses in the tropical cyclone simulation, as well as professionals devoted to model development and study of tropical cyclone activities.
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 tropical cyclone formation, diurnal variability of tropical cyclones, tropical cyclone intensity change, statistical validity of rawinsonde compositing philosophy, and tropical cyclone looping motion. (Author).
An observational study of tropical cyclone spin-up is performed using dropsondes and satellite imagery from Supertyphoon Jangmi and Hurricane Georges. Additionally, ELDORA data are analyzed in Tropical Storm Jangmi. The dropsonde analysis shows that the peak tangential wind occurs persistently within the boundary layer and suggests that significant supergradient winds are present there. However, as a result of data limitations arising from asymmetries and irregular placement of dropsondes in both time and space, a strongly conclusive statement about the presence of supergradient winds in Tropical Storm Jangmi is not possible. A dense deployment of dropsondes across the RMW is recommended to resolve the pressure gradient with sufficient accuracy to validate that supergradient winds exist at the tropical storm stage. An examination of ELDORA data in Tropical Storm Jangmi indicates that multiple rotating updrafts are present near the eye underneath cold cloud tops of -65°C. Analysis of the infrared satellite imagery from both storms suggests that rotating updrafts are omnipresent before and during rapid intensification. The findings of this study support a new theoretical model positing that spin-up of the maximum winds occurs within the boundary layer and rotating deep convective cells are predominant during tropical cyclone intensification.
This invaluable volume set of Advances in Geosciences continues the excellent tradition of the Asia-Oceania scientific community in providing the most up-to-date research results on a wide range of geosciences and environmental science. The information is vital to the understanding of the effects of climate change and extreme weather on the most populated regions and fastest moving economies in the world. Besides, these volumes also highlight original papers from many prestigious research institutions which are conducting cutting-edge studies in atmospheric physics, hydrogical science and water resource, ocean science and coastal study, planetary exploration and solar system science, seismology, tsunamis, upper atmospheric physics and space science.