AO
A.C.P. Oude Nijhuis
15 records found
1
An effective filtering technique is required for rainfall rate measurement by weather radar. A Jensen–Shannon distance (JSD)-based thresholding filter is proposed to mitigate nonmeteorological signals, either in clear air or rain situations. This algorithm classifies range-Dopple
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Scanning radars are promising sensors for atmospheric remote sensing, giving potential to retrieve parameters that characterize the local air dynamics during rain. For the observation of air motion, radars are relying on the backscatter of particles, which can, for example, be ra
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In this article, five velocity-based energy dissipation rate (EDR) retrieval techniques are assessed. The EDR retrieval techniques are applied to Doppler measurements from Transportable Atmospheric Radar (TARA)—a precipitation profiling radar—operating in the vertically fixed-poi
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This article presents the prospects of measurement systems for wind hazards and turbulence at airports, which have been explored in the Ultrafast Wind Sensors (UFO) project. At France’s Toulouse–Blagnac Airport, in situ, profiling, and scanning sensors have been used to collect m
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In this presentation a few turbulence intensity retrieval techniques are assessed by estimation of their accuracy and validated by in-situ measurements by using a polarimetric precipitation profiling radar. The turbulence intensity retrieval techniques considered include both (1)
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CEWE
A Python Summary Statistics Tool for Massive Data Analysis
In this presentation CEWE is introduced, which is a novel open source Python module with the aim of processing summary statistics for massive data sets. It is based on the addition of raw moments and a mixed moment from which regular statistics can be calculated. The novelties of
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Implementation of wind vector and turbulence intensity retrievals
Application to fast scanning X-band radar
The implementation of state-of-the-art retrieval techniques of wind vectors and turbulence intensity (EDR) will be presented. They are applied to measurements from the fast scanning X-band radar during the UFO trials at Toulouse airport. It will be demonstrated which retrievals,
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A new model is proposed on how to account for the inertia of scatterers in radar-based turbulence intensity retrieval techniques. Rain drop inertial parameters are derived from fundamental physical laws, which are gravity, the buoyancy force, and the drag force. The inertial dist
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