Doppler Lidar velocity azimuth display data, Doppler wind lidar wind and gust data from FESTVAL 2019/2020, Falkenberg
DOI:10.25592/uhhfdm.9758
Access
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2020,
Dataset Author
Steinheuer, Julian (1); Detring, Carola (2); Kayser, Markus (2); Leinweber, Ronny (2);, Institution: (1) Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany; (2) Deutscher Wetterdienst, Meteorological Observatory Lindenberg – Richard-Aßmann-Observatory, Lindenberg, Germany;Description
This data set contains level 1 and level 2 Doppler wind lidar measurements during 20190815 and 20200831 from different configurations and three different instruments (Halo Photonics Streamline). The purpose of the project part was to evaluate the ability of lidars to retrieve wind gusts. The instruments were replaced next to the Falkenberg meteorological tower in order to have a reference measurement of a sonic anemometer at 90.3m. The level 2 data are reproducible with this (https://doi.org/10.5281/ZENODO.5780949) code. The data are structured in folders for years (fesstval_2019 and fesstval_2020), for different devices (wl_***, sonic), and foldersof the corresponding different configurations. For each configuration there are the Level 1 files in level_1_** (where ** denoted the creator) and Level 2 files in level_2_js. The folder /sonic contains Level 2 files for the sonic anemometer in 90.3m of the Falkenberg meteorological tower. In the folders are daily netcdfs-files in SAMD convention with radial Doppler velocities (level1) and 10 minutes mean wind and wind gust peaks (level 2). The lidar wl_44 (fesstval_2020) was located in Lindberg (~5km north of Falkenberg).
Limitations: Quality: The data set does not contain a full time period but the result of a test campaign where configuration changes and breaks where made. The retrieval contains uncertainty estimates for each retrieved wind value. The data are based on a new approach and further testings are appropriate.
Provenance: Level 1 files have been created by Deutscher Wetterdienst, Meteorologisches Observartorium Lindenberg (info@dwd.de)
Comments: none
Instrument 1
- Source: HALO Photonics Doppler lidar (system_id: 172)
- Descriptive Instrument location: Falkenberg, Germany
- Instruments altitude: 104 [m]
- Coordinates (Latitude, Longitude): 52.20928 °N 14.12877 °E
- Height: none [m]
- Horizontal resolution: none [m]
- Vertical resolution: none [m]
- Time resolution: 5 [s]
Global information
- PID: de.koeln.rrzk/amd.de.sups/rao.dlidVAD03.l1.any
- Standard: SAMD v.1.0
- Project: FESSTVAL
- Level: 1
- Updated version: 00
- File format: NETCDF4
- Convention: CF-1.6
- Average File Size Uncompressed: 13 Mb
- File name: sups_rao_dlidVAD03_l1_any_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2020-07-10
- End: 2020-08-13
Variables
| Name | Dimension | CF standard_name | long_name | Unit |
|---|---|---|---|---|
| beta | ('time', 'range') | volume_attenuated_backwards_scattering_function_in_air | attenuated backscatter coefficient | m-1 sr-1 |
| dv | ('time', 'range') | doppler_velocity | radial velocity of scatterers away from instrument | m s-1 |
| intensity | ('time', 'range') | backscatter_intensity | backscatter intensity: b_int = snr+1, where snr denotes the signal-to-noise-ratio | 1 |
| wl | radiation_wavelength | laser center wavelength | m | |
| zsl | altitude | m |
Institution
Contact Person(s)
Julian Steinheuer (Julian.Steinheuer@uni-koeln.de), Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany
References
Steinheuer, Julian: JSteinheuer/DWL_retrieval: DWL retrieval (v1.0), (2021), Zenodo. https://doi.org/10.5281/zenodo.5780949
Steinheuer, Julian; Detring, Carola; Kayser, Markus; Leinweber, Ronny: Doppler wind lidar wind and gust data from FESSTVaL 2019/2020, Falkenberg, data version 01, (2021), http://doi.org/10.25592/uhhfdm.9758