Development Of A Large Scale Cloud System 23 27 March 1978
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Development Of A Large Scale Cloud System 23 27 March 1978
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Author : Ian D. Cohen
language : en
Publisher:
Release Date : 1981
Development Of A Large Scale Cloud System 23 27 March 1978 written by Ian D. Cohen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Cloud physics categories.
The visual and microphysical properties of a large scale cloud system are described as that system developed from an open wave in Oklahoma to a deep occlusion covering most of the east coast of the United States. Microphysical properties examined include particle size, liquid water content, particle density, crystal type, and Form Factor (a measure of uniformity of particle sizes within a sample). Visual and microphysical observations were made at four levels, approximately at the 400, 400, 700, and 850-mb surfaces, on four consecutive days. On each day the MC-130E aircraft instrumented for cloud physics research by AFGL flew at each level for approximately 30 minutes. In addition to examination of the continuous data provided by the aircraft, a detailed examination of 32 samples of 2 min each was undertaken. Sampling was conducted in the northeast quadrant of the storm. During the first day, the storm was mainly convective in nature, and as a result, had high liquid water content and particle distributions which were uniform along the vertical axis. As the storm moved eastward, it became more stratified. As it did, the observed particle size and types showed greater variations. The upper levels were affected less than the lower levels, thus reducing the uniformity along the vertical axis. As the system occluded, it lost moisture, producing smaller hydrometeors, lower liquid water content, and lighter precipitation at the surface. Later, an influx of water air increased the liquid water content and the intensity of the precipitation.
Investigations Of Large Scale Storm Systems
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Author : Arnold A. Barnes
language : en
Publisher:
Release Date : 1982
Investigations Of Large Scale Storm Systems written by Arnold A. Barnes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Cirrus clouds categories.
The microphysics of Large Scale Cloud Systems (LSCS) was investigated by in-situ measurements made from two specially instrumented aircraft, a United States Air Force MC-130E and a Learjet 36 Information was obtained on the distribution of liquid and ice water content, particle size distributions, crystal habits, and other meteorological variables. The morphologies of three storms were investigated in detail as the storms crossed the United States.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date : 1979
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Science categories.
Air Force Surveys In Geophysics
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Author :
language : en
Publisher:
Release Date : 1981
Air Force Surveys In Geophysics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Geophysics categories.
A Survey Of Melting Layer Research
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Author : Robert C. Schaller
language : en
Publisher:
Release Date : 1982
A Survey Of Melting Layer Research written by Robert C. Schaller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Ice categories.
This report summarizes previous melting-layer research both within and outside AFGL and provides recommendations for future research in the melting layer. An extensive literature search provided a bibliography of previous research. This bibliography is included as an appendix. Several definitions of the top and bottom of the melting layer are presented and discussed. Aggregation and breakup appear to be the chief microphysical processes that determine the particle-size spectrum of snow and ice that enter the melting layer. Studies of the actual melting process and of the melting layer as seen by radar are presented. Microphysical and thermodynamic characteristics are discussed. Dynamic considerations are mentioned. Previously gathered aircraft data are reviewed, and recommendations are made for future aircraft and radar data-gathering efforts. (Author).
The Conversion Of Aircraft Ice Crystal Measurements Into Terms Of Liquid Water Using Simulated Data
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Author : Robert O. Berthel
language : en
Publisher:
Release Date : 1981
The Conversion Of Aircraft Ice Crystal Measurements Into Terms Of Liquid Water Using Simulated Data written by Robert O. Berthel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Airplanes categories.
This investigation presents simulated environments of ice crystals to computer analysis as a means of imitating particle measurements made by electro-optical devices such as the Particle Measuring System's 1-D instrument. A mathematical model is developed so that single crystals of known geometric form can be processed by considering each crystal's spatial relationship to the assumed measuring instrument. Crystal orientation is defined using a random number technique. The results of the assumed measurements are converted into mass of equivalent liquid water by different methods and are compared with the known mass of the simulated environment. Relationships are derived for the conversion of several forms of single ice crystals into terms of equivalent melted diameters of liquid water and a comparison is made between the mass calculated from the derived equations with the conversion equations relating measured length to equivalent melted diameter currently in use.
Changes In The Nature Of Fluctuations Of Temperature And Liquid Water Content During The Lifetime Of A Large Scale Storm
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Author : R. M. Dyer
language : en
Publisher:
Release Date : 1982
Changes In The Nature Of Fluctuations Of Temperature And Liquid Water Content During The Lifetime Of A Large Scale Storm written by R. M. Dyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Clouds categories.
The results of a spectral analysis of the horizontal fluctuations in temperature and liquid water content measured at four altitudes daily, during four days in the life cycle of a storm moving eastward across the United States, are discussed, along with a synoptic analysis of the storm. The storm itself was typical of the large-scale systems traveling across the continent during the winter season. Each stage of the storm (development, maturity, and dissipation) exhibited distinctive spectral characteristics. In addition, the evidence is strong that the age and previous history of the system greatly affect the fluctuation spectra. The results of this study support the thesis of a characteristic spectral signature for cloud systems as well as for single clouds. This method may be used to determine the present growth stage of a storm system and its potential for future development. (Author).
Changes In The Nature Of Fluctuation Of Temperature And Liquid Water Content During The Lifetime Of A Large Scale Storm
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Author : R. M. Dyer
language : en
Publisher:
Release Date : 1982
Changes In The Nature Of Fluctuation Of Temperature And Liquid Water Content During The Lifetime Of A Large Scale Storm written by R. M. Dyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Clouds categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1980
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Aeronautics categories.
Analysis Of Afgl Aircraft Icing Data
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Author : Ian D. Cohen
language : en
Publisher:
Release Date : 1983
Analysis Of Afgl Aircraft Icing Data written by Ian D. Cohen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Airplanes categories.