HD(CP)2 long term observations, data of DL - scanning with varying elevation and azimuth (custom) (no. 00), by Supersite JOYCE, data version 00
Daily files of Doppler Lidar custom scanning (with varying elevation and azimuth) data
Access
To get a year dataset please use one of the links below to download the wget script:
2013,
Dataset Author
Anne Hirsikko (anne.hirsikko@fmi.fi), Institution: Research Center Juelich, Institute for Energy and Climate research (IEK-8)Description
This scanning routine was deployed for three beam (1 vertical, 1 eastward, 1 northward) Doppler swing observations. In daily data set files following level 1 products are included: (1) Doppler velocity: This is the motion of the scattering target carried by the atmospheric flow along line of sight (LOS) (2) backscatter coefficient: standard output provided by the manufacturer, uncalibrated (3) error estimation for Doppler velocity: theoretical uncertainty calculated using Cramer-Rao lower bound (CRLB) as described in Pearson et al. (J. Atmos. Ocean. Technol., 26, 240-250, 2009).
Limitations: Measurements only available if backscattering targets like aerosol particles and cloud droplets are present with sufficient quantity. Attenuated backscatter coefficient is uncalibrated. Due to various disturbances in conversion of level0a (ASCII) file to level0b (NetCDF) file in near real time, some data are missing on following days: 19.-25.9.13; 27.9.13; 2.-3.10.13; 5.-6.10.13; 13.10.13; 16.10.13; 23.-28.10.13; 21.11.13. These data are intended to provide to HD(CP)2 data base in due time.
Provenance: Data of JOYCE, processed by IMGK, University of Cologne
Comments: Original data together with quality flag and velocity error are provided.
Instrument 1
- Source: Doppler lidar (no 17), HALO Photonics
- Descriptive Instrument location: The Doppler lidar is installed at the JOYCE; on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Global information
- PID: de.koeln.rrzk/amd.de.sups/joy.dlidCUST00.l1.any
- Project: HD(CP)2
- Level: 1
- Updated version: 00
- File format: NETCDF3_CLASSIC
- Convention: CF-1.6 where applicable
- Average File Size Uncompressed: 4.1 Mb
- File name: sups_joy_dlidCUST00_l1_any_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2013-09-16
- End: 2013-12-31
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 | radial_velocity_of_scatterers_away_from_instrument | Doppler velocity | m s-1 |
| intensity | time, range | missing | backscatter intensity | 1 |
| wl | radiation_wavelength | wavelength | m | |
| zsl | altitude | altitude above mean sea level | m |
Institution
Contact Person(s)
Ulrich Loehnert (loehnert@meteo.uni-koeln.de)
References
A.J. Illingworth, D. Ruffieux, D. Cimini, U. Loehnert et al.,COST Action ES0702 EG-CLIMET – Final Report, doi:10.12898/ES0702FR
G. Pearson et al.,An Analysis of the Performance of the UFAM Pulsed Doppler Lidar for Observing the Boundary Layer
A.J. Illingworth, D. Ruffieux, D. Cimini, U. Loehnert et al.,COST Action ES0702 EG-CLIMET – Final Report, doi:10.12898/ES0702FR