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An Evaluation Of Raindrop Sizing And Counting Instruments


An Evaluation Of Raindrop Sizing And Counting Instruments
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An Evaluation Of Raindrop Sizing And Counting Instruments


An Evaluation Of Raindrop Sizing And Counting Instruments
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Author : John E. Pearson
language : en
Publisher:
Release Date : 1957

An Evaluation Of Raindrop Sizing And Counting Instruments written by John E. Pearson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Raindrops categories.




U S Government Research Reports


U S Government Research Reports
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Author :
language : en
Publisher:
Release Date : 1959

U S Government Research 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 1959 with Science categories.




Investigation Of The Quantitative Determination Of Point And Areal Precipitation By Radar Echo Measurements


Investigation Of The Quantitative Determination Of Point And Areal Precipitation By Radar Echo Measurements
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Author : A. L. Sims
language : en
Publisher:
Release Date : 1964

Investigation Of The Quantitative Determination Of Point And Areal Precipitation By Radar Echo Measurements written by A. L. Sims and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Radar meteorology categories.


Two drop cameras were operated in Illinois and one at Flagstaff, Arizona. Data obtained from these installations are being reduced and analyzed. The rainfall rate-radar reflectivity relationships are summarized. The data from Miami, Florida, has been stratified by synoptic type, rainfall type, and by a measure of the instability. A brief description of an objective means of coalescence curve fitting is described. (Author).



Technical Report


Technical Report
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Author : Massachusetts Institute of Technology. Hydrodynamics Laboratory
language : en
Publisher:
Release Date : 1965-07

Technical Report written by Massachusetts Institute of Technology. Hydrodynamics Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965-07 with Hydraulic engineering categories.




Production Research Report


Production Research Report
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Author : United States. Department of Agriculture
language : en
Publisher:
Release Date : 1962

Production Research Report written by United States. Department of Agriculture and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Agriculture categories.




Production Research Report


Production Research Report
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Author :
language : en
Publisher:
Release Date : 1957

Production Research Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Agriculture categories.




The Disdrometer An Instrument For Measuring The Distribution Of Raindrop Sizes Encountered In Flight


The Disdrometer An Instrument For Measuring The Distribution Of Raindrop Sizes Encountered In Flight
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Author : Alan Bemis
language : en
Publisher:
Release Date : 1951

The Disdrometer An Instrument For Measuring The Distribution Of Raindrop Sizes Encountered In Flight written by Alan Bemis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with Drops categories.


Introduction: Certainly one of the most important parameters in cloud physics, and studies associated with cloud physics, is the size distribution and number of the water particles within the region under study. Measurements of cloud particles have been made for many years on mountain tops and for a few years with airplanes. However, measurement of raindrop sizes with an airplane is a very different problem because a raindrop cannot be accelerated to aircraft speeds without breaking it up. This means that one cannot catch a sample raindrop on an airplane for examination, nor can one accelerate a raindrop to aircraft speeds in the laboratory. The difficulty, then, is one of calibration. Radar echoes from rain are becoming of increasing importance to meteorologists and radar engineers. At present our best experimental information concerning the 'density" of rain producing those echoes is based on rainfall rate and raindrop size measurements made at the ground below the region yielding the echo. Some measurements of total liquid water content within the region have also been made (5). Because raindrop size is of such prime importance in weather radar studies and also because of its general meteorological importance, the Signal Corps - M.I.T. Weather Radar Research Project undertook at its beginning to design an airborne drop size measuring instrument. A general discussion of the problem was presented in Section III A 3 c of our First Technical Report (2). Different methods of measurement were discussed and some of the reasons for selecting an optical method were mentioned. The design of a particular instrument was described which aimed at measuring not just individual drop sizes, but also the distribution of sizes. It has been named the Disdrometer (Distribution of Drops Meter). Construction of the first flight model was completed in .1947. This model, and several improved versions of it, have now been flown through many rain storms and have recorded many drop size distributions. Probably the most interesting conclusion from these measurements is that the drop size distribution within a rain storm varies rapidly from point to point, so rapidly that the sampling problem assumes major proportions, and so rapidly that one cannot hope for accurate correlation between the small.scale measurements made on the airplane and the comparatively large region returning the radar echo. Because of this variability it may be unnecessary to attempt very accurate measurements. The Disdrometer, however, was such an attempt and as such it has not yet succeeded. To date its measurements have suffered from a consistent error which leads to much higher total liquid water contents than are indicated by other, more dependable, measurements. Because the cause of this consistent error remains uncertain, the instrument is still under study. This report is, then, an interim report on the work. It covers the history of the development to date, and describes the device completely in its present form



Study As To Merits Of Various Rapid Raindrop Counting And Sorting Techniques


Study As To Merits Of Various Rapid Raindrop Counting And Sorting Techniques
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Author : Glenn E. Stout
language : en
Publisher:
Release Date : 1958

Study As To Merits Of Various Rapid Raindrop Counting And Sorting Techniques written by Glenn E. Stout and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1958 with Meteorological instruments categories.




An Apparatus For Forming Waterdrops


An Apparatus For Forming Waterdrops
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Author : Robert S. Palmer
language : en
Publisher:
Release Date : 1962

An Apparatus For Forming Waterdrops written by Robert S. Palmer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Water jets categories.




Annotated List Of Publications 1895 1970 Illinois State Water Survey


Annotated List Of Publications 1895 1970 Illinois State Water Survey
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Author : J. Loreena Ivens
language : en
Publisher:
Release Date : 1970

Annotated List Of Publications 1895 1970 Illinois State Water Survey written by J. Loreena Ivens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Illinois categories.