de.hamburg.icdc/amd.de.fval/dwd.mwr00.l2.ta en SAMD v2.2, https://doi.org/10.25592/uhhfdm.9902 FESSTVAL fval_dwd_mwr00_l2_ta Temeprature Profile, Microwave Radiometer Observations during FESSTVaL 2021 DOI:10.25592/uhhfdm.10198 Löhnert, Ulrich (1); Knist, Christine (2); Böck, Tobias (1); Pospichal, Bernhard (1); (1) University of Cologne; (2) DWD Lindenberg; CF-1.6 external NETCDF4 de 28 daily 2 This data is subject to the FESSTVaL data policy to be found at https://doi.org/10.25592/uhhfdm.9890 and in the SAMD Observation Data Product Standard https://doi.org/10.25592/uhhfdm.9902. This data has been processed with mwrpro-v04 by University of Cologne. This current SAMD v01 data version now includes file content and naming conventions adjusted to meet the SAMD requirements. In addition improved quality control flags as well as uncertainty estimates have been included.Retrieval version: rao_rt03 Institute of Geophysics and Meteorology, University of Cologne Ulrich Loehnert ulrich.loehnert@uni-koeln.de DWD Christine Knist christine.knist@dwd.de 2021-05-01 2021-09-20 1.3 none 50 - 500 Richard-Assmann-Observatory, Lindenberg, DWD This data set contains level1 (brightness temperatures) and level2 (retrieved meteorological variables) of the four ground-based microwave radiometers (MWR) measuring during FESSTVaL 2021 (May-August) at Lindenberg (2 MWR, dwd and uzk), Falkenberg (1 MWR, uzk) and Birkholz (1 MWR, uhh). For each MWR you find up to seven data file types. 1.) Up to two level1 data file types: arbritrary viewing direction (e.g. *mwr00_l1_tb_*) and boundary layer scans (e.g. *mwrBL00_l1_tb_*) 2.) Up to five level2 data file types: path integrated liquid water path (e.g. *_mwr00_l2_clwvi_*),  path integrated water vapor (e.g. *_mwr00_l2_prw_*), coarse vertical resolution water vapor profiles (e.g. *_mwr00_l2_hua_*), coarse vertical resolution temperature profiles (*_mwr00_l2_ta_*), ABL temperature profiles (e.g. *_mwrBL00_l2_ta_*) mwr00 (mwr01) file types are on a typical temporal resolution of 1-2 seconds, whereas mwrBL00 (mwrBL01) are on a temporal resolution on the order of minutes (3-15), depending on the instrument. The level2 data sets have been derived by means of multi-variate regression. They rely on long-term radiosonde data sets for training. Note, that ocasionally liquid water path values can be slightly negative due to statistical error. Quality: All data files are provided with quality flags that are described in the netcdf file headers. Exclude flagged data from automatic analyses, for case studies, use flagged data with care and contact the responsible person named in the file header in case of any doubt. Integrated liquid water and water vapor from ground-based MWR are amongst the most accurate methods available. Temperature and humidity profiles are only coarsly resolved in the vertical, are, however, continuously available. Temperature vertical resolution decrease quickly with height from tens of meters close to the surface to hundreds of meters at the top of the ABL.  Use *_mwrBL00_l2_ta_* profiles for the most accurate temperature profile in the ABL. Humidity profiles contain only roughly two independent pieces of information throughout the whole troposhere. All level2 data products are delivered with an uncertainty specification. RPG HATPRO G5 microwave radiometer DWDHAT 52.2085 14.118 98 0 - 10000 none

paper

2003 Loehnert, U., and S. Crewell none Radio Science, 38(3), 8041, 2003, doi:10.1029/2002RS002654.

paper

2003 Crewell, S., and U. Löhnert none Radio Science, 38(3), 8042, 2003, doi:10.1029/2002RS002634

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2007 Crewell, S., and U. Löhnert none IEEE Transactions on Geoscience and Remote Sensing, 45(7), 2195-2201, doi:10.1109/TGRS.2006.888434

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2012 Löhnert, U. and Maier, O. none Atmos. Meas. Tech., 5, 1121-1134, doi:10.5194/amt-5-1121-2012

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2015 Steinke, S., S. Eikenberg, U. Löhnert, G. Dick, D. Klocke, P. Di Girolamo, and S. Crewell none Atmos. Chem. Phys., 15, 2675-2692, doi:10.5194/acp-15-2675-2015

data set

2022 Löhnert, Ulrich; Knist, Christine; Böck, Tobias; Pospichal, Bernhard none http://doi.org/10.25592/uhhfdm.10198 Short term observations Local observations Instrument groups MWR 64178 43 2 2 time ('time',) time seconds since 1970-01-01 00:00:00 UTC time_bnds ('time', 'nv') lat latitude degree_north lon longitude degree_east zsl altitude altitude above mean sea level m azi ('time',) sensor_azimuth_angle degree ele ('time',) sensor elevation angle degree ele_ret ('n_ret',) retrieval elevation angle degree height ('height',) height m ta ('time', 'height') air_temperature K ta_offset ('time', 'height') air_temperature offset correction based on brightness temperature offset K ta_err ('height', 'n_ret') standard error of temperature K flag ('time',) quality control flags