Matthieu Boquet

Vaisala · Wind Operations

This study shows promising results for the wind energy industry and provides evidence that Nacelle-Mounted Lidar (NML) can be used to accurately measure turbulence: Turbulence Intensity (TI) and Turbulent Kinetic Energy (TKE).

Scanning Doppler Lidars have become more prominent in the wind energy industry for a variety of applications. Scanning Lidar’s provide spatial variation of winds and direction over a large area, which can be used to assess the spatial uncertainty of winds and analyze complex flows. Due to the recent growth in wind energy, wind farms are being built...

The accurate localization and characterization of aerosol and cloud layers is crucial for climate studies (aerosol indirect effect), meteorology (Planetary Boundary Layer PBL height), site monitoring (industrial emissions, mining,…) and natural hazards (thunderstorms, volcanic eruptions). LEOSPHERE has recently developed aerosol/cloud detection and...

The measurement range of a coherent wind Doppler lidar (CWDL) along a laser beam is the maximum distance from the lidar where wind speed data are accurately retrieved. It means that, at this distance, a sufficient number of emitted laser photons are backscattered and received by the lidar. Understanding of the propagation of the laser through the a...

In this paper we describe the setup and results of a scanning LiDAR measurement campaign at an offshore park, aiming at performing multiple power curves and characterizing the wind flow variation in the vicinity of the wind farm. The Scanning LiDAR is located on an offshore substation, 1.8 km at the West of the Anholt wind farm. The lidar has a nom...

In this study, we evaluate different formulations of the turbulence intensity (TI) reconstructed from the radial wind speed measurements from a two-beam nacelle LiDAR. The LiDAR TI reconstructions are compared with cup anemometer measurements, and the relative error is quantified and modelled for a range of wind directions, turbulence and stability...

Since a few years, a new wind measurement instrument has been competing with standard cup anemometers: the LiDAR. The performances of this instrument over complex terrain are still a matter of debate and this is mainly due to the flow homogeneity assumption made by the instrument. In this work, the error caused by this hypothesis was evaluated with...

Many application areas are interested in getting wind measurements within the Planetary Boundary Layer (PBL) height, and with a relatively high accuracy. These applications include meteorology like PBL studies, air traffic safety like aircraft induced wake vortices and wind shears detection or wind farming like wind resources assessment. In order t...

A lidar of type Windcube V2 has been tested according to the new draft of the power curve measurement standard CD IEC 61400-12-1, Ed. 2 at the two test stations Rysum in Germany and Hovsore in Den-mark. The test scheme includes a type spe-cific sensitivity test aiming to examine the generic accuracy of the lidar under a wide range of environmental...

The R-MAN510 is the new Raman lidar super ceilometer developed by Leosphere company. Based on the experience with the ALS aerosol lidar, LEOSPHERE developed the R-Man510 a low cost, and low maintenance lidar dedicated to operational networks. It still preserves the benefits of the lidar: a high range and a low overlap. The combination of polarized...

The R-MAN510 raman lidar super-ceilometer contributes to fill in a lack of actual ground based measurements especially in aerosol detection and classification. This new polarized and nitrogen Raman networkable lidar provides automatic and real-time detection of atmospheric structure, retrieval of optical properties and classification of cloud and a...

The R-MAN510 is the new raman lidar super ceilometer developed by Leosphere company. Based on the experience with the ALS aerosol lidar, LEOSPHERE develops the R-Man510 a low cost, and low maintenance lidar dedicated to networks. It still preserves the benefits of the lidar: a high range and a low overlap. The combining of polarized and Raman chann...

A new compact and light nitrogen Raman lidar (R-Man510) has recently been developed by Leosphere company. This UV-lidar system is based on a low energy diode pumped Nd:YAG laser at 355 nm and has been developed to be operated unmanly for the meteorological and airport needs. Measurements are typically performed with a vertical resolution between 15...

Wind farm development in complex sites raise a long list of challenges to keep the cost of produced power as low as possible. Among these challenges is the ability to accurately assess the wind resource. Because wind flow is more difficult to predict at hub height and over the entire site, and because met mast can be difficult to erect on such comp...

Accuracy of Lidar remote sensors for wind energy has been previously reported. Coherent Doppler lidars have shown very high correlation with calibrated cup anemometers in flat terrain, both onshore and offshore. However, in more complex terrain, not only more turbulent air flow but also loss of flow homogeneity occurs, and remote sensors measuremen...

Urbanized cities in the world are exposed to atmospheric pollution events. To understand the chemical and physical processes it is necessary to describe correctly the Planetary Boundary Layer (PBL) dynamics and height evolution. For these proposals, a compact and rugged eye safe UV Lidar, the EZLIDAR™, was developed together by CEA/LMD and LEOSPHER...

The Planetary Boundary Layer (PBL) height is a key but complex meteorological parameter to handle air quality modelers. Its diurnal variations induce vertical dilution of the pollutants at daytime, and concentrate them at nighttime. Urbanized cities in the world are exposed to atmospheric pollution events. To understand the chemical and physical pr...

To fully understand atmospheric dynamics, climate studies, energy transfer and weather prediction, the wind field is one of the most important atmospheric state variables. Studies indicate that a global determination of the tropospheric wind field to an accuracy of 0.5 m/s is critical for improved numerical weather forecasting. LEOSPHERE recently d...

To fully understand atmospheric dynamics, climate studies, energy transfer and weather prediction, the wind field is one of the most important atmospheric state variables. Studies indicate that a global determination of the tropospheric wind field to an accuracy of 0.5 m/s is critical for improved numerical weather forecasting. LEOSPHERE recently d...

Accuracy of Lidar remote sensors for wind energy has been previously reported. Coherent Doppler Lidars have shown very high correlation with calibrated cup anemometers in flat terrain, both onshore and offshore. However, in more complex terrain, not only more turbulent air flow but also loss of flow homogeneity occurs, and remote sensors measuremen...

Bigger strongly urbanized cities in the world are often exposed to atmospheric pollution events. To understand the chemical and physical processes that are taking place in these areas it is necessary to describe correctly the Planetary Boundary Layer (PBL) dynamics and the PBL height evolution. For these proposals, a compact and rugged eye safe UV...

To fully understand atmospheric dynamics, climate studies, energy transfer, and weather prediction the wind field is one of the most important atmospheric state variables. Studies indicate that a global determination of the tropospheric wind field to an accuracy of 0.5 m/s is critical for improved numerical weather forecasting. LEOSPHERE recently d...

Bigger strongly urbanized cities in the world are often exposed to atmospheric pollution events. To understand the chemical and physical processes that are taking place in these areas it is necessary to describe correctly the Planetary Boundary Layer (PBL) dynamics and the PBL height evolution. For these proposals, a compact and rugged eye safe UV...

The poster presents a comparison of selected methods for determination of the vertical wind in the boundary layer used during the EUCAARI IMPACT campaign that took place in May 2008 in The Netherlands. The campaign covered a monthlong intensified ground-based and airborne measurements in the vicinity of the CESAR observatory in Cabauw. Ground-based...

The WINDCUBE TM WLS70 is a coherent wind lidar recently developed by LEOSPHERE to perform vertical wind speed and direction profile measurements in the boundary layer and upper clouds in the troposphere with high wind speed and spatial resolution (0.4 m/s and 50m). These measurement data play a key role in many meteorological applications, and can...

Bigger strongly urbanized cities in the world are often exposed to atmospheric pollution events. To understand the chemical and physical processes that are taking place in these areas it is necessary to describe correctly the Planetary Boundary Layer (PBL) dynamics and the PBL height evolution. For these proposals, a compact and rugged eye safe UV...

To fully understand atmospheric dynamics, climate studies, energy transfer, and weather prediction the wind field is one of the most important atmospheric state variables. Small scales variability and low atmospheric layers are not described with sufficient resolution up to now. To answer these needs, the WLS70 long-range wind Lidar is a new genera...

To fully understand atmospheric dynamics, climate studies, energy transfer and weather prediction, the wind field is one of the most important atmospheric state variables. Studies indicate that a global determination of the tropospheric wind field to an accuracy of 0.5 m/s is critical for improved numerical weather forecasting. LEOSPHERE recently d...

The WindCube WLS70 is a new generation wind Lidar developed by LEOSPHERE for meteorological applications. The Lidar is derived from the commercial WindCube widely used for autonomous and very accurate short range measurements by the wind industry. It has been modified increasing the range up to 4 km and can even detect cirrus at 8km. First results...

A wind lidar experiment was completed at the Howard University Beltsville Campus. Three lidars: the NASA/Goddard Laboratory for Observation of Winds (GLOW), the NASA/Langley Validation Lidar (VALIDAR), and a commercial lidar from Leosphere(WLS70). The lidars compared well with each other, with radiosonde data, a 915 MHz wind profiler and data from...

Understanding the wind resource at a prospective project site has long been considered a critical step in the wind farm development process, and therefore wind resource experts have become more and more sophisticated in performing the assessment of the wind resource. The data collected from a wind resource assessment program, and the accuracy of th...

Lidar wind vector retrieval principle Ground based remote sensing retrieval process of wind velocity vectors is based on the measurement of radial velocities (also called line of sight velocities) along at least three beams shooting in different directions. In order to correctly retrieve the wind velocity vector at a given height, it is assumed tha...