Author: Alfred K. Blackadar
Publisher:
ISBN:
Category : Winds
Languages : en
Pages : 180

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Author: A. G. Davenport
Publisher:
ISBN:
Category :
Languages : en
Pages : 2

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Author: Pavan Kumar Reddy Kankanala
Publisher:
ISBN:
Category : Atmospheric circulation
Languages : en
Pages : 130

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Book Description
"Fairbanks, Alaska (64°49ʹ N, 147°52ʹ W) experiences strong temperature inversions which when combined with the low wind speeds prevailing during the winter cause serious air pollution problems. The SODAR (Sound Detection And Ranging) or acoustic sounder is a very useful instrument for studying the lower atmosphere as it can continuously and reliably measure the vertical profiles of wind speed and direction,vertical motions, turbulence and the thermal structure in the lower part of the troposphere. A Doppler sodar was operated from December 2005 to April 2006 at the National Weather Service site in Fairbanks. The wind observations from the sodar indicate that the majority of the winds during the winter months were from the North, Northeast or the East, which is in good agreement with the radiosonde measurements and the long term trends in the wind patterns over Fairbanks area. Case studies were carried out using the sodar data depicting drainage winds, low-level jets, formation and breakup of inversions and estimation of the mixing layer height"--Leaf iii.

Author: C. J. P. Cave
Publisher: Cambridge University Press
ISBN: 110745798X
Category : Science
Languages : en
Pages : 159

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Book Description
Originally published in 1912, this book presents the result of various experiments performed between 1908 and 1909 into the wind currents in the air above the surface layers of our atmosphere. Cave rigorously details the background to each experiment, which were done with pilot balloons tracked with a theodolite, and makes meteorological drawings based on the findings of each experiment. This book will be of value to anyone with an interest in meteorological history and the methodology of meteorological experiments before computers.

Author: Stefan Emeis
Publisher: Springer
ISBN: 3319728598
Category : Technology & Engineering
Languages : en
Pages : 276

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Book Description
This book offers an introduction to the meteorological boundary conditions for power generation from wind – both onshore and offshore, and provides meteorological information for the planning and running of this important renewable energy source. It includes the derivation of wind laws and wind-profile descriptions, especially those above the logarithmic surface layer, and discusses winds over complex terrains and nocturnal low-level jets. This updated and expanded second edition features new chapters devoted to the efficiency of large wind parks and their wakes and to offshore wind energy.

Author:
Publisher:
ISBN:
Category : Winds
Languages : en
Pages : 256

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Author: David John Low
Publisher:
ISBN:
Category :
Languages : en
Pages : 267

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Author: Samuel Penn
Publisher:
ISBN:
Category : Atmosphere
Languages : en
Pages : 98

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Author: H. E. Cramer
Publisher:
ISBN:
Category : Atmospheric diffusion
Languages : en
Pages : 312

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Book Description
The principal objectives of the research described in this report have been to achieve improved understanding of the basic physical processes involved in the dispersal of airborne material in the lower atmosphere; and, to establish empirical relationships between basic diffusion parameters and direct meteorological indicators that permit satisfactory quantitative estimates of dispersal from continuous point sources, over travel distances of the order of 1 km, in a wide variety of general weather conditions. These objectives have been achieved largely as the result of a series of comprehensive field observations involving simultaneous measurements both of diffusion and the structure of atmospheric turbulence. The diffusion measurements comprise 10-min average concentrations of sulfur-dioxide gas emitted from a continuous point source near ground level, at travel distances from 50 to 800 m from the release-point for the tracer. The meteorological observations include mean wind speeds, frequency distributions of azimuth oLnd direction, vertical profiles of wind speed and air temperature, and measurements of the fluctuations in wind velocity obtained from bivanes and heatedthermocouple anemometers. Over one hundred individual experiments of this type were carried out at Round Hill and at a field site near O'Neill, Nebraska during Project Prairie Grass, an extensive series of diffusion measurements sponsored by the Air Force Cambridge Research Center during the summer of 1956. These data comprise the most comprehensive set of small-scale diffusion and meteorological observations currently available. They provide a fairly complete picture of the probable variations in basic diffusion parameters over travel distances of the order of 1 km in all conditions of thermal stratification ...

Author: Gary J. Thompson
Publisher:
ISBN:
Category : Atmospheric models
Languages : en
Pages : 32

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Book Description
The mesoscale atmospheric structure in and around regions of clear air turbulence (CAT) is investigated. It is shown that the formation and dissipation of clear air turbulence at several different altitudes is closely related to changes in the atmospheric mesostructure. The turbulence is located in the region of two sloping boroclinic zones and can be attributed to Kelvin-Helmholtz instability resulting from strong wind directional oscillations between these two stable layers. The meteorological sounding data reveal that the lower stable layer and the layer of strong directional oscillations undergo significant upward vertical displacement. The change in turbulence activity can be directly correlated with this motion, and the breakdown of the turbulence and the double stability structure occur almost simultaneously. (Author).