de.koeln.rrzk/amd.nl.sups/ces.mwr00.l1.tb SAMD v.1.0 en HD(CP)2 sups_ces_mwr00_l1_tb HD(CP)2 long term observations, brightness temperature data of Microwave radiometer (no. 00), by Supersite CESAR, data version 00 Daily files with zenith brightness temperatures from 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 10:19:42 2014 NETCDF3_CLASSIC 4.5 daily 1 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. The brightness temperatures provided are the values as measured by the radiometer without any post-processing applied. The radiometer is calibrated with liquid nitrogen at half yearly intervals. Meteo variables measured with the sensors attached to the radiometer are included, as well as the radiometer rainflag. The KNMI HATPRO is not equipped with an IR-sensor. none none HATPRO RPG radiometer, first generation 51.968 4.929 -0.7 -0.7 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

paper

2013 Maschwitz G., U. Loehnert, S. Crewell, T. Rose, and D. D. Turner Ground-based microwave radiometers (MWR) are becoming more and more common for remotely sensing the atmospheric temperature and humidity profile as well as path-integrated cloud liquid water content. The calibration accuracy of the state-of-the-art MWR HATPRO-G2 (Humidity And Temperature Profiler - Generation 2) was investigated during the second phase of the Radiative Heating in Underexplored Bands Campaign (RHUBC-II) in northern Chile (5320m above mean sea level, 530 hPa) conducted by the Atmospheric Radiation Measurement (ARM) program between August and October 2009. This study assesses the quality of the two frequently used liquid nitrogen and tipping curve calibrations by performing a detailed error propagation study, which exploits the unique atmospheric conditions of RHUBC-II. Both methods are known to have open issues concerning systematic offsets and calibration repeatability. For the tipping curve calibration an uncertainty of +/-0.1 to +/-0.2K (K-band) and +/-0.6 to +/-0.7K (V-band) is found. doi:10.5194/amt-6-2641-2013 Long term observations Local observations Supersites CESAR Long term observations Local observations Variable groups Radiometric Long term observations Local observations Instrument groups MWR 53158 2 14 14 product metadata for data in this file missing station_details metadata for supersite missing time time, time time in seconds since reference at the end of acquistion interval 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 freq_sb freq, sensor_band_central_radiation_frequency GHz tb time, freq brightness_temperature K azi time, sensor_azimuth_angle degree ele time, sensor elevation angle degree ta time, air_temperature ambient air temperature measured by sensor on microwave radiometer K pa time, air_pressure ambient air pressure measured by sensor on microwave radiometer Pa hur time, relative_humidity ambient relative humidity measured by sensor on microwave radiometer 1 tb_flag time, quality flag for the brightness temperature data 1 rainflag time, rain flag indicator from different sources 1 tb_bias freq, systematic calibration uncertainty of brightness temperature, one standard deviation K tb_cov freq, frq error covariance matrix of brightness temperature channels K2