de.koeln.rrzk/amd.nl.sups/ces.mwr00.l2.clwvi SAMD v.1.0 en HD(CP)2 sups_ces_mwr00_l2_clwvi HD(CP)2 long term observations, path of integrated cloud liquid water data of Microwave radiometer (no. 00), by Supersite CESAR, data version 00 Daily files of retrieved integrated cloud liquid water from zenith observations with a 14-channel HATPRO radiometer (first generation). Henk Klein Baltink, henk.klein.baltink@knmi.nl Royal Netherlands Meteorological Institute (KNMI) 2014-11-12 CF-1.4 external data retrieved from hourly binary HATPRO files Processed with IDL script create_ncdf_output_data (version 1.0) on bhw460.knmi.nl at Wed Nov 12 11:39:59 2014 NETCDF3_CLASSIC 1.6 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. CESAR data policy applies also, see: www.cesar-database.nl. CESAR (www.cesar-database.nl) Royal Netherlands Meteorological Institute Henk Klein Baltink +31 30 2206 476 henk.klein.baltink@knmi.nl 2013-01-01 2013-12-31 1 none none CESAR Observatory, Remote Sensing Site (www.cesar-observatory.nl) The KNMI HATPRO radiometer is installed at the Cabauw Observatory and operated since May 2006. From the zenith brightness temperatures measured by the radiometer the integrated cloud liquid water is retrieved using statistical quadratic regression algorithm based on 10 year De Bilt radiosonde datset. The radiometer is calibrated with liquid nitrogen at half yearly intervals. data unreliable during rainfall none HATPRO RPG radiometer, first generation 51.968 4.929 -0.7 1 see HATPRO manual (available from http://www.radiometer-physics.de)

paper

2005 Rose, T. et al. The implementation of an operational network of microwave radiometers is presently hampered by the cost and complexity of the available instruments. For this reason, the definition and design of a low-cost microwave radiometer suitable for automatic, high-quality observations of liquid water path (LWP) were one objective of the BALTEX cloud liquid water network: CLIWA-NET. In the course of the project, it turned out that a full profiling radiometer with 14 channels can be produced at only about 30% higher cost than a classical dual-channel IWV/LWP radiometer. The profiling capability allows simultaneous observations of LWP and the lower tropospheric (0–5 km) humidity and temperature profiles with a temporal resolution of less than 10 s and a vertical resolution from 100 m to 1 km in the planetary boundary layer depending on height and atmospheric conditions. The latter is possible due to an elevation scan capability and by the implementation of a new filter bank design [...] Atmos. Res., Special issue: CLIWA-NET: Observation and Modelling of Liquid Water Clouds, 75(3), 183-200,doi:10.1016/j/atmosres.2004.12.005 Long term observations Local observations Supersites CESAR Long term observations Local observations Variable groups Cloud properties Long term observations Local observations Instrument groups MWR 48875 2 product metadata for data in this file missing station_details metadata for supersite missing time time, time time in seconds since reference seconds since 1970-01-01 00:00:00 00:00 time_bnds time, nv missing lon longitude degree_north lat latitude degree_east zsl altitude m clwvi time, atmosphere_cloud_liquid_water_content kg m-2 clwvi_flag time, quality flag for the cloud liquid water data 1 rainflag time, rain flag indicator from different sources 1 clwvi_error time, atmosphere cloud liquid water content error kg m-2 clwvi_offset time, atmosphere cloud liquid water content offset kg m-2