Sonic Anemometer Articles & Analysis
22 articles found
” ATI’s tests demonstrated that their sonic anemometer would work up to 110° C, a threshold that Clements subsequently validated for ...
This design is still in use today and is known as the cup anemometer.Types of AnemometersThere are several types of anemometers, each with its advantages and disadvantages. The most common types are the cup anemometer, the vane anemometer, the hot-wire anemometer, and the sonic anemometer.Cup AnemometerThe cup ...
Introduction The performance of non-orthogonal sonic anemometers has been the subject of much discussion in recent years. ...
Part 1 - UNDERSTANDING NON-ORTHOGONAL SONIC ANEMOMETERS Non-orthogonal sonic anemometers have been around for about twenty years. ...
Introduction In the spring of 2014 we conducted an experiment in the backyard of Applied Technologies, Inc. comparing the performance of two of our sonic anemometers, the orthogonal K-Probe and the non-orthogonal A-Probe (Zimmerman et al., 2014). We were responding to concerns in the sonic anemometer user community about the ...
Sonic anemometer-thermometers began appearing in field studies over 50 years ago. ...
Non-orthogonal sonic anemometers have been around for about twenty years. We define them as having three measurement axes inclined at an angle of 60 deg to the horizontal and intersecting at their midpoints to form a small sampling volume. ...
In a preliminary campaign held during the winter of 2012 with continuous gas releases, we had 12 ultrasonic anemometers measuring wind velocity and temperature at 10 Hz, and six photo-ionisation detectors measuring gas concentration at 50 Hz. ...
The performance of non-orthogonal sonic anemometers has been the subject of much discussion in recent years. ...
With SODAR measurements at WEC testing field in Grevenbroich in comparison to sonic and cup anemometers the usability of qualified wind and turbulence data from a SODAR are verified. Results from simultaneous measurements of cup anemometers, ultra-sonic anemometers and the SODAR system show the differences and ...
RAWS networks should be designed to provide this information. Rugged and reliable sonic anemometer/thermometers (sonics) most nearly provide the requisite measurement capability. The sonic's capacity to resolve the smallest scales of anisotropic turbulence and the fluxes of heat and momentum is investigated. ...
These methods, associated with a specific wind model, have been tested by using wind velocities recorded, with an ultrasonic anemometer, on a typical suburban site located in the southern part of the Paris region (France). Both of them give similar results and differ from classical Briggs's and Doury's parameterisations for standard deviations.Keywords: low wind speed, stable ...
Sonic anemometers have had extensive use in the scientific community. ...
These aspects are discussed in the light of measurements made with a sonic anemometer on an industrial site.Keywords: eddy scales, plumes, sonic anemometer measurements, stability, atmospheric dispersion models, environmental impact assessment, air pollution, environmental pollution, modelling, gas concentrations, averaging ...
This paper presents the results of a study of the factors used in these regulatory tables, and makes comparisons with the equivalent factors deduced from runs with a gas dispersion model and sonic anemometer observations.Keywords: averaging time, fluctuations, plumes, sonic anemometer, stability, ...
This note contains considerations that could help the experimentalist to obtain high quality eddy covariance measurements needed to characterize these fluxes using sonic anemometer/ thermometer (sonic) measurements from a fixed platform mounted within the atmospheric surface layer ...
The experimenter occasionally encounters high-frequency (> 1 Hz) contamination in sonic anemometer data that adversely affects higher-order moment calculations. ...
For this we divide the data into two categories: a) profile data from slow-response sensors like cup anemometers, glass-encapsulated platinum wire thermometers, and dew-point hygrometers, and b) turbulence data from sonic anemometers, sonic thermometers, infrared (or Lyman alpha) hygrometers. ...
In this note we reassess the role of sonic thermometry in boundary-layer studies. The sonic temperature signal, when corrected for crosswind velocity contamination, very closely approximates the virtual temperature of air. ...
(ATI) K-probe measures wind components along three mutually orthogonal axes separated spatially from each other to minimize flow distortion errors. The sonic anemometer samples the wind at a 100-Hz rate but constructs 0.1-s (10-point) non-overlapping block averages to provide. a 10-Hz data train for internal processing. ...