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Sodar Articles & Analysis
19 articles found
OTT HydroMet has supplied the German Weather Service DWD with 97 Lufft CHM?8k ceilometers for use at international airports in Germany. The order is worth around two million euros over two years. The tender was awarded after a test phase lasting several months and includes modifications developed at the customer’s request. The German Weather Service (DWD) has renewed their ...
The sodar data made a significant contribution to the overall wind resource monitoring campaign for the project. ...
The miniSoDAR was specifically designed for providing high spatial resolution measurements in high background noise environments. SODAR technology was originally designed and employed in high altitude wind measurements (600 meters or higher) and low background noise environments (characteristic of the Air Quality and Atmospheric Research monitoring sites). The miniSoDAR was (and ...
Doppler SODAR Operating similar to a sonar the Doppler SODAR (Sonic Detection and Ranging) directly measures the atmospheric wind speed and direction at multiple altitudes simultaneously. ...
The miniSODAR is a high-frequency Doppler sodar system that was designed to measure the atmospheric wind profile from 15 meters to 150/200 meters (data is often available to 250 meters) in 5-meter increments. ...
Increasing hub heights and growing rotor diameters of advanced WEC make SODAR systems a valuable alternative to meteorological towers. SODAR systems provide wind profiles as well as turbulence information over the entire height of large turbines. With SODAR measurements at WEC testing field in Grevenbroich in comparison to sonic and cup ...
In addition-hourly multi-level wind measurements were taken by a SODAR located approximately 3 km south-west of the Martins Creek ...
The project's test–bed was established as a novel approach to the overall treatment of the scientific–applicative project goal.Keywords: meteorological forecasting, data validation, height, length, topographic complexity, hlTc, vertical wind profiles, measurements, radiosonde, RASS, SODAR, WRF model, short–term forecasts, Slovenia, atmospheric dispersion modelling, PM 10 air ...
Remote sensing of the atmospheric boundary layer using an acoustic sounder provides an opportunity to assess the mixing height based on analysis of SODAR echo strength. During the night, with a steady state of the stable boundary layer, the mixing height is associated with the range of the inversion layer. ...
A novel approach to the terrain complexity characterisation of the area under examination is defined - 'height and length of Topographic complexity, hlTc'.Keywords: meteorological forecasting, data validation, height, length, topographic complexity, hlTc, vertical wind profiles, measurements, radiosonde, RASS, SODAR, WRF model, short–term forecasts, Slovenia, atmospheric ...
We observed the turbulence and vertical profile of temperature in and above the roughness sublayer (RS) using a tower, a tethered balloon and a Doppler sodar in Himeji City. A 3–D ultrasonic anemometer–thermometer was sited at a height of 54 m on the tower. ...
Intuitively, one might prefer to include meteorological inputs as close to the release location as possible. During Joint Urban 2003, SODARs measured vertical wind profiles?upwind, within the city centre near the releases, and downwind of Oklahoma City. Low altitude SODAR measurements fell within the urban canopy, while the upper altitude measurements were ...
A meteorological pre-processor has been built to calculate atmospheric turbulence scale parameters (u*, L, H0, zi, w*) over a 2-D domain, covering land-use variations, local meteorological data (surface data, SODAR, RASS), and results from diagnostic wind field models. The code implements updated methods to calculate similarity scale parameters, both on shore and over sea (lake) ...
Doppler Sound Detection And Ranging (SODAR) measurements are used to investigate the air masses dynamics at the landfill, in order to better support the adopted assumptions. ...
The newly developed method described in this paper relies on the measurement of polonium 218Po concentration in the air and was examined during measurement campaigns performed in hot seasons. The acoustic sodar instrumentation was chosen as a reference method. As a result, the statistical model was developed to define the MH and the obtained results made it possible to find ...
Air pollutants and meteorological parameters were measured continuously by in situ instruments, path-averaging techniques (up to three DOAS systems), and SODAR inside a street canyon and in the surrounding area of 1 km x 1 km (Gottinger Strasse in Hanover, Germany) from 2001 until 2003 which are available in the data bank ValiData for validation of microscale models. ...
Radiosounding launched in Barcelona (ES), Lisboa, Evora and Neves Corvo (PT) and sodar measurements for wind above Prague (CR) are compared with the universal profiles determined by numerical simulation.Keywords: atmospheric boundary layer, urban area, wind velocity, roughness length, stratification, surface Rossby number independence, universal profile, blending height, ...
Comparison of meteorological fields obtained with the two models have shown that, despite the much smaller computational resources needed by TAPM and being almost 10 times faster than MM5 in simulation time, both gave similar results, demonstrating thus the usefulness of TAPM as an alternative tool for air pollution management.Keywords: mesoscale meteorological models, computational resources, ...
Basic concepts, technical applications and details of the updated meteorological pre-processor using SODAR data (MPS) as well as additional meteorological measurements are presented. The pre-processor allows the calculation of boundary-layer parameters, i.e. friction velocity, Monin-Obukhov length and mixing layer height, on the basis of SODAR measurements which ...