de.koeln.rrzk/amd.de.sups/joy.mwr00.l1.tb SAMD v.1.0 en HD(CP)2 sups_joy_mwr00_l1_tb HD(CP)2 long term observations, brightness temperature data of Microwave radiometer (no. 00), by Supersite JOYCE, data version 01 Daily files of brightness temperature based on microwave radiometer measurements Ulrich Loehnert (loehnert@meteo.uni-koeln.de) Research Center Juelich Institute for Energy and Climate Research IEK8 Wed Feb 11 02:06:10 2015 based on CF-1.6 external In addition to version 00, this version 01 includes information on offset corrections applied to the observed brightness temperatures. Data processed with mwrpro-v04 by University of Cologne; NETCDF3_CLASSIC 8 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. MWR is part of JOYCE, data 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 2011-01-01 2014-12-31 2 - 3 none none The instrument is located at the JOYCE supersite, on top of the roof of IEK-8 (building 5.2) of the Forschungszentrum Juelich Microwave Radiometer Type: HATPRO (Humidity and Temperature PROfiler) Generation 2, manufactored by Radiometer Physics GmbH, Meckenheim, Germany Microwave Radiometer Name: TOPHAT TOPHAT has seven K band (22.235-31.4 GHz) channels as well as seven V band channels (51.2-58.0 GHz). The brightness temeparature measurements in these band are sensitive for the humidity profile, the vertically integrated amount of cloud liquid water and the temperature profile, respectively The files contain 14 brightness temperatures as a function of measurement time, elevation and azimuth angle observing direction. Additionally included are temperature, pressure and humidity at the instrument location as well quality flags characterizing the instrument performance. Note, that brightness temperature values are given for all available times so that it is up to the user to decide whether or not to use the values if quality flags are set. Provided uncertainties describe the expected random error of the brightness temperature channels (variance) for each measurement in addition to the covariances among the different channels. Also included is the expected systematic uncertainty for brightness temperature when carying out a absolute calibration (Maschwitz et al., 2012 in Atmospheric Measurement Techniques). For detailed documentation of the instrument see: http://www.radiometer-physics.de/ or Rose et al. (2005) in Atmospheric Research TOPHAT was installed at JOYCE on 22.7.2010 as has been measuring in a 24/7 mode since then. For details on TOPHAT at the JOYCE supersite please refer to http://gop.meteo.uni-koeln.de/ag_crewell/doku.php?id=instruments:tophat:tophat none none RPG Microwave Radiometer HATPRO, Generation 2 50.908547 6.413536 111 none 14 channel K and V band microwave profiler, fully scanable in azimuth and elevation

paper

2005 T. Rose, S. Crewell, U. Loehnert, and C. Simmer none 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 JOYCE Long term observations Local observations Variable groups Radiometric Long term observations Local observations Instrument groups MWR 47209 2 14 2 time n_time, time time seconds since 1970-01-01 00:00:00 UTC time_bnds n_time, nv missing lat latitude latitude degree_north lon longitude longitude degree_east zsl altitude altitude above mean sea level m freq_sb n_freq, sensor_band_central_radiation_frequency frequency band GHz azi n_time, sensor_azimuth_angle sensor azimuth due reference point degree ele n_time, sensor elevation angle degree tb n_time, n_freq brightness_temperature brightness temperatures K offset_tb n_time, n_freq brightness temperature offset correction subtracted K freq_shift n_freq, frequency shift applied to brightness temperature GHz tb_bias n_freq, systematic calibration uncertainty of brightness temperature, one standard deviation K tb_cov n_freq, n_freq error covariance matrix of brightness temperature channels K*K wl_irp n_wl_irp, infrared pyrometer central wavelength micrometer tb_irp n_time, n_wl_irp infrared pyrometer brightness temperature K ele_irp n_time, infrared pyrometer elevation angle degree ta n_time, air_temperature air temperature K pa n_time, air_pressure air pressure Pa hur n_time, relative_humidity relative humidity 1 flag n_time, quality control flags missing