de.koeln.rrzk/amd.de.sups/joy.dlidDBS00.l2.wind SAMD v.1.0 en HD(CP)2 sups_joy_dlidDBS00_l2_wind HD(CP)2 long term observations, wind measurements data of DL - measured vectors -> wind profiles can be estimated (no. 00), by Supersite JOYCE, data version 00 Daily files of Doppler Lidar Doppler beam swing wind data (3-beams) Anne Hirsikko (anne.hirsikko@fmi.fi) Research Center Juelich, Institute for Energy and Climate research (IEK-8) 2014-07-03 14:50:44 (CET) CF-1.6 where applicable external Data processed with three_beam_wind_hdcp2_0.1.0 and write_three_beam_wind_hdcp2_0.1.0 by University of Cologne NETCDF3_CLASSIC 3.3 daily 2 For non-commercial use only. This data is subject to the HD(CP)2/SAMD data policy to be found at https://doi.org/10.25592/uhhfdm.9823 and in the HD(CP)2/SAMD Observation Data Product Standard https://doi.org/10.5281/zenodo.1741363. Data of JOYCE, processed by IMGK, University of Cologne Institute of Geophysics and Meteorology, University of Cologne Ulrich Loehnert +49 221 470 1779 loehnert@meteo.uni-koeln.de 2013-01-01 2013-09-16 17 none 30 The Doppler lidar is installed at the JOYCE; on the roof of the Institute for Energy and Climate Research, Research Center Juelich. In daily data set files following level 2 products are included: (1) 3D wind vector components (u,v,w) (2) wind speed (wspeed): speed of the horizontal wind (3) wind direction (wdir): direction of the horizontal wind (4) error estimations for 3D wind vector components (u,v,w), wind speed and wind direction. Data sources were sups_joy_dlidDBS00_l1_any_v00*.nc files. Before calculating u,v,w, wspeed, and wdir radial, velocity (dv) was masked with quality mask (qdv), and data in clouds were removed by requiring that beta is smaller than 1e-5. Quality mask qwind equals 1 if wspeed and wdir are available. Uncertainty of variables was calculated based on error propagation law, and by taking into account uncertainty of radial velocity. Homogeneous wind filed was assumed. Measurements are only available if backscattering targets like aerosols and cloud droplets are present. Applied beta threshold does not guarantee that all hydrometeors (e.g. rain and ice crystals) are removed from analysis. Uncertainty estimations do not take into account effect of turbulence. Therefore, during convective situation uncertainties of wspeed and wdir are likely higher than given ones, and are indicated by temporally highly varying wind directions. Processed from Doppler beam swing level 1 data found in HD(CP)2 data base. Three beam wind retrieval. Uncertainty estimate takes into account only radial velocity uncertainty. Doppler lidar (no 17), HALO Photonics 50.9085 6.4135 111 none Details of the instrument and data processing can be found from attached PDF document. Long term observations Local observations Supersites JOYCE Long term observations Local observations Variable groups Atmospheric state Long term observations Local observations Instrument groups Lidar 288 280 2 lon longitude longitude degrees_east lat latitude latitude degrees_north zsl altitude altitude above mean sea level m height height, height missing m height_bnds height, nv missing missing missing time time, time time seconds since 1970-01-01 00:00:00 UTC time_bnds time, nv missing missing missing wspeed time, height wind_speed missing m s-1 wdir time, height wind_from_direction missing degree u time, height eastward_wind missing m s-1 v time, height northward_wind missing m s-1 w time, height upward_air_velocity missing m s-1 errwspeed time, height missing wind speed uncertainty m s-1 errwdir time, height missing wind direction uncertainty degree erru time, height missing eastward wind uncertainty m s-1 errv time, height missing northward wind uncertainty m s-1 errw time, height upward air velocity uncertainty missing m s-1 qwind time, height missing quality mask of wind 1