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Development Of A Large Scale Cloud System 23 27 March 1978
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Book Synopsis Development of a Large Scale Cloud System, 23-27 March 1978 by : Ian D. Cohen
Download or read book Development of a Large Scale Cloud System, 23-27 March 1978 written by Ian D. Cohen and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Large Scale Cloud System, 23-27 March 1978 by : Ian D. Cohen
Download or read book Development of a Large Scale Cloud System, 23-27 March 1978 written by Ian D. Cohen and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Development of a Large Scale Cloud System, 23-27 March 1978 by : Ian D. Cohen
Download or read book Development of a Large Scale Cloud System, 23-27 March 1978 written by Ian D. Cohen and published by . This book was released on 1981 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Investigations of Large Scale Storm Systems by : Arnold A. Barnes
Download or read book Investigations of Large Scale Storm Systems written by Arnold A. Barnes and published by . This book was released on 1982 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A Survey of Melting Layer Research by : Robert C. Schaller
Download or read book A Survey of Melting Layer Research written by Robert C. Schaller and published by . This book was released on 1982 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Air Force Surveys in Geophysics by :
Download or read book Air Force Surveys in Geophysics written by and published by . This book was released on 1981 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Conversion of Aircraft Ice Crystal Measurements Into Terms of Liquid Water Using Simulated Data by : Robert O. Berthel
Download or read book The Conversion of Aircraft Ice Crystal Measurements Into Terms of Liquid Water Using Simulated Data written by Robert O. Berthel and published by . This book was released on 1981 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Changes in the Nature of Fluctuation of Temperature and Liquid Water Content During the Lifetime of a Large-scale Storm by : R. M. Dyer
Download or read book 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 published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in the Nature of Fluctuations of Temperature and Liquid Water Content During the Lifetime of a Large-scale Storm by : R. M. Dyer
Download or read book 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 published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of AFGL Aircraft Icing Data by : Ian D. Cohen
Download or read book Analysis of AFGL Aircraft Icing Data written by Ian D. Cohen and published by . This book was released on 1983 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microphysical Properties of a Large Scale Cloud System, 1-3 March 1978 by : Donald J. Varley
Download or read book Microphysical Properties of a Large Scale Cloud System, 1-3 March 1978 written by Donald J. Varley and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the microphysical properties observed by a specially-instrumented C-130 while flying in portions of a large cloud system on 3 successive days in March 1978. Each of the flights was made slightly east of an upper level trough as it moved across the U.S. Horizontal sampling passes of 50 to 100 nm (93 to 186 km) in length were made at various levels from approximately 2 to 9 km above ground in portions of the cloud system that were relatively homogeneous horizontally and vertically. Particle spectra data from PMS 1-D spectrometers were averaged for consecutive 20-sec periods. On each of the 3 days the particles having the smallest mean size were observed at the highest levels flown and had median diameters near 100 micrometers. The calculated equivalent liquid water content from 7 to 9 km was near 0.0 1 g cu m. The total particle count was between 8,000 and 18,000 cu m over Arkansas and coastal Delaware, but was near 25,000 cu m over the mountains of New Mexico. Values of mass and particle size increased with particle distance fallen, by indicating growth by collective means. The largest equivalent liquid water content values were near 1 g cu m and were recorded in the large snow just above the freezing level. The form factor, a mathematical parameter, was found useful in studying particle spectra. Certain maxima and minima observed in several plotted spectra, especially those from 7-km altitude data, are suggested as being due to an aggregation mechanism. (Author).
Book Synopsis Proceedings of the 9th International Cloud Physics Conference, Tallinn, Estonian SSR, USSR 21-28 August, 1984 by :
Download or read book Proceedings of the 9th International Cloud Physics Conference, Tallinn, Estonian SSR, USSR 21-28 August, 1984 written by and published by . This book was released on 1984 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Snow and Ice Particle Sizes and Mass Concentrations at Altitudes Up to 9 Km (30,000 Feet) by : Richard K. Jeck
Download or read book Snow and Ice Particle Sizes and Mass Concentrations at Altitudes Up to 9 Km (30,000 Feet) written by Richard K. Jeck and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 7600 nautical miles (nm) (14,000 km) of select ice particle measurements over the United States have been compiled into a single, computerized database for use in characterizing ice crystal and snowflake (generally termed ice particle) size distributions and mass concentrations at flight altitudes. Data are from 50 research flights by six agencies in eight flight research projects using Particle Measuring Systems' one-dimensional (1-D) and two-dimensional (2-D) particle sizing probes. Primary recorded variables are average particle size distributions in the range 0.1 to 10 mm from each of 1625 microphysically uniform cloud intervals or other convenient distances in wintertime clouds, snowstorms, cirrus, and other high-altitude clouds. The findings are that, generally, the largest particles and the greatest concentrations of total ice particle mass (TIPM) are confined to altitudes below 20,000 ft (6 km). There, particles of 10 mm in maximum dimension and TIPM's up to about 3 g/m(exp 3) may be found. Above 20,000 ft, particles are smaller than 2 mm and TIPM's are less than 0.2 g/m(exp 3) in the cirrus and the upper reaches of deep winter storm clouds that are found at these levels. Exceptions are thunderstorm anvil clouds where 10 mm particles and TIPM's of at least 1 g/m(exp 3) can be found up to at least 30,000 ft (9 km). Anvil clouds and stratiform clouds associated with warm season mesoscale convective systems have provided some of the largest TIPM's, the greatest particle concentrations, and the largest particle sizes at high and mid altitudes, respectively. In contrast to supercooled cloud droplets where the largest liquid water (mass) concentrations are confined to short distances of 3 nm or less in convective clouds, the largest average TIPM's in glaciated clouds have been found in layer clouds over distances up to 30 nm.
Book Synopsis Meteorological and Geoastrophysical Abstracts by :
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1982 with total page 1376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.