Attributes {
    HDF5_ROOT_GROUP {
        String Dataset "surface_emissivity", "ghg_avk_rank", "musica_hno3_apriori", "musica_wvp_reg", "musica_wvp_response", "musica_wvp_dofs", "musica_ghg_reg", "musica_at_apriori_amp", "musica_ghg_apriori_amp", "spectra_wn", "musica_species_id", "eumetsat_surface_type_flag", "musica_ghg_xavkat_lvec", "musica_wvp_resolution", "musica_nol", "fit_quality_parameter", "musica_at_error", "lon", "musica_ghg_apriori", "wv_xavkat_rank", "musica_spectra_simulations", "eumetsat_residual_flag", "musica_at_response", "time_string", "musica_ghg_xavkat_val", "musica_hno3_resolution", "musica_hno3_avk_rvec", "time", "musica_at_apriori", "musica_wv_xavkat_rank", "musica_ghg_avk_lvec", "musica_wvp_apriori_amp", "musica_at_avk_rank", "musica_hno3_avk_val", "musica_hno3_reg", "musica_hno3_xavkat_rvec", "musica_wv_apriori", "eumetsat_iterations", "musica_pressure_levels", "musica_wv_avk_rank", "musica_ghg_avk_val", "musica_wv_xavkat_rvec", "musica_hno3_avk_rank", "eumetsat_product_minor_version", "musica_at_avk_lvec", "musica_at_resolution", "musica_wv_avk_rvec", "eumetsat_dust_flag", "musica_wv_avk_val", "platform_zenith_angle", "ghg_xavkat_rank", "error_parameter", "hno3_avk_rank", "surface_emissivity_flag", "musica_hno3_response", "musica_spectra_residuals", "eumetsat_parameter_flag", "along_track", "musica_wv_xavkat_val", "lat", "instrument", "regularisation_parameter", "across_track", "musica_hno3_dofs", "musica_ghg_error", "musica_ghg_response", "eumetsat_first_guess_flag", "altitude_tropopause_climatological", "musica_ghg_xavkat_rvec", "musica_ghg_resolution", "musica_fit_quality", "eumetsat_cloud_area_fraction", "musica_st", "musica_ghg_avk_rank", "musica_hno3_error", "musica_st_apriori", "musica_ghg", "musica_hno3_xavkat_rank", "musica_at", "musica_fit_quality_flag", "musica_hno3_xavkat_val", "surface_emissivity_wn", "eumetsat_h2o", "musica_wv", "musica_wvp_error", "musica_hno3_avk_lvec", "eumetsat_processor_major_version", "musica_hno3_apriori_amp", "observation_id", "musica_at_avk_val", "musica_at_dofs", "hno3_xavkat_rank", "wv_avk_rank", "eumetsat_cloud_test_flag", "musica_ghg_xavkat_rank", "musica_hno3_xavkat_lvec", "eumetsat_cloud_formation_flag", "musica_iterations", "musica_altitude_levels", "musica_wv_xavkat_lvec", "musica_ghg_avk_rvec", "musica_ghg_dofs", "musica_at_avk_rvec", "eumetsat_convergence_flag", "eumetsat_cloud_summary_flag", "atmospheric_levels", "musica_hno3", "musica_wv_avk_lvec", "musica_apriori_cl", "time_local_solar", "musica_at_reg", "resolution_parameter", "at_avk_rank";
    }
    H5_GLOBAL {
        String HDF5_OBJ_FULLPATH "H5_GLOBAL";
        String title "MUSICA IASI full retrieval product standard output";
        String retrieval_target_name "Water vapour (WV): H2O and HDO; Greenhouse Gases (GHG): N2O, CH4; HNO3";
        String retrieval_in_logarithmic_parameter_space "true";
        String platform "SATELLITE";
        String name_of_platform "EUMETSAT Metop";
        String experiment "IASI";
        String data_version "3.3.1 (MUSICA 2021)";
        String institution "Karlsruhe Institute of Technology (KIT)";
        String history "Date of retrieval run: 20210727212241";
        String address "H.-v.-Helmholtz-Platz 1, D-76344 Leopoldshafen, Germany";
        String author "Benjamin Ertl and Matthias Schneider";
        String email "benjamin.ertl@kit.edu; matthias.schneider@kit.edu";
        String data_format_version "netcdf";
        String Conventions "CF-1.7";
        String license "CC BY 4.0 Attribution";
        String acknowledgement "The generation of this data set has strongly benefit from the project MUSICA (funded by the European Research Council under the European Community\342\200\231s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement number 256961), from financial support in the context of the projects MOTIV and TEDDY (funded by the Deutsche Forschungsgemeinschaft under project IDs/Geschaeftszeichen 290612604/GZ:SCHN1126/2-1 and 416767181/GZ:SCHN1126/5-1, respectively), and INMENSE (funded by the Ministerio de Economia y Competividad from Spain, CGL2016-80688-P). Retrieval calculations for generating this data set were performed on the supercomputer ForHLR funded by the Ministry of Science, Research and the Arts Baden-Wuerttemberg and by the German Federal Ministry of Education and Research. Furthermore, we acknowledge the contribution of Teide High-Performance Computing facilities (provided by the Instituto Tecnologico y de Energias Renovables (ITER), S.A, teidehpc.iter.es).";
        String _NCProperties "version=2,netcdf=4.7.4,hdf5=1.12.0,";
    }
    /surface_emissivity {
        String HDF5_OBJ_FULLPATH "/surface_emissivity";
        Int32 _Netcdf4Coordinates 0, 15;
        Float32 _FillValue 9.969209968e+36;
        String description "surface emissivity (source of emissivity value is given in the variable surface_emissivity_flag)";
        String long_name "surface emissivity";
        String standard_name "surface_longwave_emissivity";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /ghg_avk_rank {
        String HDF5_OBJ_FULLPATH "/ghg_avk_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.        14";
        Int32 _Netcdf4Dimid 7;
    }
    /musica_hno3_apriori {
        String HDF5_OBJ_FULLPATH "/musica_hno3_apriori";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori profiles of nitric acid ([HNO3]) as mixing ratios in ppmv";
        String long_name "a priori HNO3 state";
        String units "1e-6";
        String coordinates "time lat musica_altitude_levels";
    }
    /musica_wvp_reg {
        String HDF5_OBJ_FULLPATH "/musica_wvp_reg";
        Int32 _Netcdf4Coordinates 0, 4, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "regularisation parameter for water vapour proxy species (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])}); parameter 1: L0 coefficients\\n parameter 2: L1 coefficients\\n parameter 3: L2 coefficients";
        String long_name "regularisation parameter for WV proxy state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wvp_response {
        String HDF5_OBJ_FULLPATH "/musica_wvp_response";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "measurement response (sum along the row of the averaging kernel matrix) for water vapour proxy species (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])})";
        String long_name "measurement response for WV proxy state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wvp_dofs {
        String HDF5_OBJ_FULLPATH "/musica_wvp_dofs";
        Int32 _Netcdf4Coordinates 0, 13;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "degrees of freedom for signal (trace of the averaging kernel matrix) for water vapour proxy species (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])})";
        String long_name "dofs for WV proxy state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_ghg_reg {
        String HDF5_OBJ_FULLPATH "/musica_ghg_reg";
        Int32 _Netcdf4Coordinates 0, 4, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "regularisation parameter for greenhouse gas species (state vector {ln[N2O],ln[CH4]}); parameter 1: L0 coefficients\\n parameter 2: L1 coefficients\\n parameter 3: L2 coefficients";
        String long_name "regularisation parameter for GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_at_apriori_amp {
        String HDF5_OBJ_FULLPATH "/musica_at_apriori_amp";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori assumed amplitude of atmospheric temperature variability (state vector in K)";
        String long_name "a priori amplitude of AT state";
        String units "K";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_ghg_apriori_amp {
        String HDF5_OBJ_FULLPATH "/musica_ghg_apriori_amp";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori assumed amplitude of greenhouse gas species variability (state vector {ln[N2O],ln[CH4]})";
        String long_name "a priori amplitude of GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /spectra_wn {
        String HDF5_OBJ_FULLPATH "/spectra_wn";
        String CLASS "DIMENSION_SCALE";
        String NAME "spectra_wn";
        Int32 _Netcdf4Dimid 14;
        String description "frequency of spectra [cm-1]";
        String long_name "spectral bins";
        String units "cm-1";
    }
    /musica_species_id {
        String HDF5_OBJ_FULLPATH "/musica_species_id";
        String CLASS "DIMENSION_SCALE";
        String NAME "musica_species_id";
        Int32 _Netcdf4Dimid 13;
        String description "MUSICA species variable for identifying MUSICA WV and GHG species: for WV \"1\" means H2O (or proxy 0.5*(ln[H2O]+ln[HDO])) and \"2\" means HDO (or proxy (ln[HDO]-ln[H2O])); for GHG \"1\" means N2O and \"2\" means CH4";
        String long_name "species identifier";
        String units "1";
    }
    /eumetsat_surface_type_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_surface_type_flag";
        String description "0:water; 1:land low; 2:land high; 3:land water low; 4:land water high; 5:sea ice";
        String long_name "surface type";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_ghg_xavkat_lvec {
        String HDF5_OBJ_FULLPATH "/musica_ghg_xavkat_lvec";
        Int32 _Netcdf4Coordinates 0, 13, 8, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the cross averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "left vectors of xavkat of GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wvp_resolution {
        String HDF5_OBJ_FULLPATH "/musica_wvp_resolution";
        Int32 _Netcdf4Coordinates 0, 5, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "parameter for vertical representativeness for water vapour proxy species (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])}); parameter 1: centre (Eq. 3.24 of Rodgers 2000)\\n parameter 2: resolving length (Eq. 3.23 and 3.24 of Rodgers, 2000)\\n parameter 3: layer width per degree of freedom (Purser and Huang, 1993)";
        String long_name "resolution parameter for WV proxy state";
        String units "m";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_nol {
        String HDF5_OBJ_FULLPATH "/musica_nol";
        Int32 _Netcdf4Dimid 0;
        String description "number of actual atmospheric grid levels";
        String long_name "number of atmospheric grid levels";
        String units "1";
        String coordinates "time lat lon";
    }
    /fit_quality_parameter {
        String HDF5_OBJ_FULLPATH "/fit_quality_parameter";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         3";
        Int32 _Netcdf4Dimid 3;
    }
    /musica_at_error {
        String HDF5_OBJ_FULLPATH "/musica_at_error";
        Int32 _Netcdf4Coordinates 0, 2, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "error for atmospheric temperature (state vector in K); parameter 1: sqrt of diagonal elements of uncertainty covariances due to retrieval fit noise\\n parameter 2: sqrt of diagonal elements of uncertainty covariances due to IASI instrumental noise covariances (according to Pequignot et al., 2008)\\n  parameter 3: sqrt of diagonal elements of uncertainty covariances due to atmospheric temperature a priori uncertainty (depends strongly on assumed temperature a priori uncertainty covariances)";
        String long_name "error for AT state";
        String units "K";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /lon {
        String HDF5_OBJ_FULLPATH "/lon";
        String description "geographical longitude [degree_east] (east is positive and west negative)";
        String long_name "longitude";
        String standard_name "longitude";
        String units "degrees_east";
        String axis "X";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_ghg_apriori {
        String HDF5_OBJ_FULLPATH "/musica_ghg_apriori";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori profiles of greenhouse gas species (state vector {[N2O],[CH4]}) as mixing ratios in ppmv";
        String long_name "a priori GHG state";
        String units "1e-6";
        String coordinates "time lat musica_altitude_levels";
    }
    /wv_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/wv_xavkat_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         9";
        Int32 _Netcdf4Dimid 12;
    }
    /musica_spectra_simulations {
        String HDF5_OBJ_FULLPATH "/musica_spectra_simulations";
        Int32 _Netcdf4Coordinates 0, 14;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "simulated IASI spectra [nW/(sr*cm^2*cm-1)]";
        String long_name "simulated spectra";
        String units "nW cm-2 sr-1 (cm-1)-1";
        String coordinates "time lat lon";
    }
    /eumetsat_residual_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_residual_flag";
        String description "0:Residual check was not passed-sounding rejected; 1:Resisual check passed-sounding accepted";
        String long_name "EUMETSAT L2 residual check";
        String units "1";
        String comment "only for EUMETSAT L2 PPF versions 4 and 5, source: EUMETSAT L2 netcdf files";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_at_response {
        String HDF5_OBJ_FULLPATH "/musica_at_response";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "measurement response (sum along the row of the averaging kernel matrix) for atmospheric temperature (state vector in K)";
        String long_name "measurement response for AT state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /time_string {
        String HDF5_OBJ_FULLPATH "/time_string";
        String description "time (UTC) as ISO 8601 UTC date-time string";
        String long_name "ISO 8601 UTC date-time string";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_ghg_xavkat_val {
        String HDF5_OBJ_FULLPATH "/musica_ghg_xavkat_val";
        Int32 _Netcdf4Coordinates 0, 8;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the cross averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "singular values of xavkat of GHG state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_resolution {
        String HDF5_OBJ_FULLPATH "/musica_hno3_resolution";
        Int32 _Netcdf4Coordinates 0, 5, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "parameter for vertical representativeness for nitric acid (state vector {ln[HNO3]}); parameter 1: centre (Eq. 3.24 of Rodgers 2000)\\n parameter 2: resolving length (Eq. 3.23 and 3.24 of Rodgers, 2000)\\n parameter 3: layer width per degree of freedom (Purser and Huang, 1993)";
        String long_name "resolution parameter for HNO3 state";
        String units "m";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_hno3_avk_rvec {
        String HDF5_OBJ_FULLPATH "/musica_hno3_avk_rvec";
        Int32 _Netcdf4Coordinates 0, 9, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm)";
        String long_name "right vectors of avk of HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /time {
        String HDF5_OBJ_FULLPATH "/time";
        String description "universal coordinated time (UTC) given in seconds since 2000-01-01 00:00:00";
        String long_name "universal coordinated time";
        String standard_name "time";
        String units "seconds since 2000-01-01 00:00:00";
        String axis "T";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_at_apriori {
        String HDF5_OBJ_FULLPATH "/musica_at_apriori";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori atmospheric temperature [K] (source: EUMETSAT L2)";
        String long_name "a priori AT state";
        String units "K";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wv_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/musica_wv_xavkat_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the cross averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "rank of xavkat of WV state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_ghg_avk_lvec {
        String HDF5_OBJ_FULLPATH "/musica_ghg_avk_lvec";
        Int32 _Netcdf4Coordinates 0, 13, 7, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm)";
        String long_name "left vectors of avk of GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wvp_apriori_amp {
        String HDF5_OBJ_FULLPATH "/musica_wvp_apriori_amp";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori assumed amplitude of water vapour proxy species variability (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])})";
        String long_name "a priori amplitude of WV proxy state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_at_avk_rank {
        String HDF5_OBJ_FULLPATH "/musica_at_avk_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the averaging kernel for atmospheric temperature (state vector in K)";
        String long_name "rank of avk of AT state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_avk_val {
        String HDF5_OBJ_FULLPATH "/musica_hno3_avk_val";
        Int32 _Netcdf4Coordinates 0, 9;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm)";
        String long_name "singular values of avk of HNO3 state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_reg {
        String HDF5_OBJ_FULLPATH "/musica_hno3_reg";
        Int32 _Netcdf4Coordinates 0, 4, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "regularisation parameter for nitric acid (state vector {ln[HNO3]}); parameter 1: L0 coefficients\\n parameter 2: L1 coefficients\\n parameter 3: L2 coefficients";
        String long_name "regularisation parameter for HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_hno3_xavkat_rvec {
        String HDF5_OBJ_FULLPATH "/musica_hno3_xavkat_rvec";
        Int32 _Netcdf4Coordinates 0, 10, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the cross averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "right vectors of xavkat of HNO3 state";
        String units "K-1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wv_apriori {
        String HDF5_OBJ_FULLPATH "/musica_wv_apriori";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori profiles of water vapour species (state vector {[H2O],[HDO]}) as mixing ratios in ppmv";
        String long_name "a priori WV state";
        String units "1e-6";
        String coordinates "time lat musica_altitude_levels";
    }
    /eumetsat_iterations {
        String HDF5_OBJ_FULLPATH "/eumetsat_iterations";
        String description "Number of iterations in the OEM";
        String long_name "EUMETSAT L2 PPF OEM iterations";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_pressure_levels {
        String HDF5_OBJ_FULLPATH "/musica_pressure_levels";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "atmospheric pressure levels [Pa]";
        String long_name "atmospheric pressure";
        String standard_name "air_pressure";
        String units "Pa";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wv_avk_rank {
        String HDF5_OBJ_FULLPATH "/musica_wv_avk_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm)";
        String long_name "rank of avk of WV state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_ghg_avk_val {
        String HDF5_OBJ_FULLPATH "/musica_ghg_avk_val";
        Int32 _Netcdf4Coordinates 0, 7;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm)";
        String long_name "singular values of avk of GHG state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_wv_xavkat_rvec {
        String HDF5_OBJ_FULLPATH "/musica_wv_xavkat_rvec";
        Int32 _Netcdf4Coordinates 0, 12, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the cross averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "right vectors of xavkat of WV state";
        String units "K-1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_hno3_avk_rank {
        String HDF5_OBJ_FULLPATH "/musica_hno3_avk_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm)";
        String long_name "rank of avk of HNO3 state";
        String units "1";
        String coordinates "time lat lon";
    }
    /eumetsat_product_minor_version {
        String HDF5_OBJ_FULLPATH "/eumetsat_product_minor_version";
        String description "L2 (EUMETSAT netcdf) product minor version";
        String long_name "EUMETSAT L2 PPF minor version number";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_at_avk_lvec {
        String HDF5_OBJ_FULLPATH "/musica_at_avk_lvec";
        Int32 _Netcdf4Coordinates 0, 6, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the averaging kernel for atmospheric temperature (state vector in K)";
        String long_name "left vectors of avk of AT state";
        String units "K";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_at_resolution {
        String HDF5_OBJ_FULLPATH "/musica_at_resolution";
        Int32 _Netcdf4Coordinates 0, 5, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "parameter for vertical representativeness for atmospheric temperature (state vector in K); parameter 1: centre (Eq. 3.24 of Rodgers 2000)\\n parameter 2: resolving length (Eq. 3.23 and 3.24 of Rodgers, 2000)\\n parameter 3: layer width per degree of freedom (Purser and Huang, 1993)";
        String long_name "resolution parameter for AT state";
        String units "m";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wv_avk_rvec {
        String HDF5_OBJ_FULLPATH "/musica_wv_avk_rvec";
        Int32 _Netcdf4Coordinates 0, 13, 11, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm)";
        String long_name "right vectors of avk of WV state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /eumetsat_dust_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_dust_flag";
        String description "Indicates presence of dust clouds in the IFOV";
        String long_name "EUMETSAT L2 dust cloud indicator";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_wv_avk_val {
        String HDF5_OBJ_FULLPATH "/musica_wv_avk_val";
        Int32 _Netcdf4Coordinates 0, 11;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm)";
        String long_name "singular values of avk of WV state";
        String units "1";
        String coordinates "time lat lon";
    }
    /platform_zenith_angle {
        String HDF5_OBJ_FULLPATH "/platform_zenith_angle";
        Float32 _FillValue 9.969209968e+36;
        String description "satellite instrument viewing angle [degree]";
        String long_name "viewing angle";
        String standard_name "platform_zenith_angle";
        String units "degree";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /ghg_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/ghg_xavkat_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.        10";
        Int32 _Netcdf4Dimid 8;
    }
    /error_parameter {
        String HDF5_OBJ_FULLPATH "/error_parameter";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         3";
        Int32 _Netcdf4Dimid 2;
    }
    /hno3_avk_rank {
        String HDF5_OBJ_FULLPATH "/hno3_avk_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         6";
        Int32 _Netcdf4Dimid 9;
    }
    /surface_emissivity_flag {
        String HDF5_OBJ_FULLPATH "/surface_emissivity_flag";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "-2: Cloud; -1: Masuda et al. (1988) sea water for wind speed 5m/s; 0:IREMIS no MOD11 data; 1:IREMIS baseline fit method was applied; 2:IREMIS averaged from the 2 adjacent months; 3:IREMIS annual average; 4:IREMIS average over the annual average over all emis with latitude <-80; 5:ASTER spectral library version 2.0 sea ice emissivity; 6:EUMETSAT IASI L2 emissivity";
        String long_name "source of surface emissivity data";
        String units "1";
    }
    /musica_hno3_response {
        String HDF5_OBJ_FULLPATH "/musica_hno3_response";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "measurement response (sum along the row of the averaging kernel matrix) for nitric acid (state vector {ln[HNO3]})";
        String long_name "measurement response for HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_spectra_residuals {
        String HDF5_OBJ_FULLPATH "/musica_spectra_residuals";
        Int32 _Netcdf4Coordinates 0, 14;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "difference between measured IASI spectra (source EUMETSAT L1C) and IASI spectra simulated by MUSICA IASI processor [nW/(sr*cm^2*cm-1)]";
        String long_name "spectra residuals";
        String units "nW cm-2 sr-1 (cm-1)-1";
        String coordinates "time lat lon";
    }
    /eumetsat_parameter_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_parameter_flag";
        String description "check that geophysical parameters from the EUMETSAT L2 PPF OEM retrieval are within bounds";
        String long_name "EUMETSAT L2 geophysical parameter check";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /along_track {
        String HDF5_OBJ_FULLPATH "/along_track";
        String description "along track satellite observation index (consistent to EUMETSAT netcdf files)";
        String long_name "along track index";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_wv_xavkat_val {
        String HDF5_OBJ_FULLPATH "/musica_wv_xavkat_val";
        Int32 _Netcdf4Coordinates 0, 12;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the cross averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "singular values of xavkat of WV state";
        String units "1";
        String coordinates "time lat lon";
    }
    /lat {
        String HDF5_OBJ_FULLPATH "/lat";
        String description "geographical latitude [degree_north] (north is positive and south negative)";
        String long_name "latitude";
        String standard_name "latitude";
        String units "degrees_north";
        String axis "Y";
        Int32 _Netcdf4Dimid 0;
    }
    /instrument {
        String HDF5_OBJ_FULLPATH "/instrument";
        String description "1: IASI-A; 2: IASI-B; 3: IASI-C";
        String long_name "satellite instrument";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /regularisation_parameter {
        String HDF5_OBJ_FULLPATH "/regularisation_parameter";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         3";
        Int32 _Netcdf4Dimid 4;
    }
    /across_track {
        String HDF5_OBJ_FULLPATH "/across_track";
        String description "across track satellite observation index (consistent to EUMETSAT netcdf files)";
        String long_name "across track index";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_hno3_dofs {
        String HDF5_OBJ_FULLPATH "/musica_hno3_dofs";
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "degrees of freedom for signal (trace of the averaging kernel matrix) for nitric acid (state vector {ln[HNO3]})";
        String long_name "dofs for HNO3 state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_ghg_error {
        String HDF5_OBJ_FULLPATH "/musica_ghg_error";
        Int32 _Netcdf4Coordinates 0, 2, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "error for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, i.e. relative error); parameter 1: sqrt of diagonal elements of uncertainty covariances due to retrieval fit noise\\n parameter 2: sqrt of diagonal elements of uncertainty covariances due to IASI instrumental noise covariances (according to Pequignot et al., 2008)\\n  parameter 3: sqrt of diagonal elements of uncertainty covariances due to atmospheric temperature a priori uncertainty (depends strongly on assumed temperature a priori uncertainty covariances)";
        String long_name "error for GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_ghg_response {
        String HDF5_OBJ_FULLPATH "/musica_ghg_response";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "measurement response (sum along the row of the averaging kernel matrix) for greenhouse gas species (state vector {ln[N2O],ln[CH4]})";
        String long_name "measurement response for GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /eumetsat_first_guess_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_first_guess_flag";
        String description "indicates the kind of measurements used as the first guess";
        String long_name "EUMETSAT L2 PPF first guess usage";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /altitude_tropopause_climatological {
        String HDF5_OBJ_FULLPATH "/altitude_tropopause_climatological";
        Float32 _FillValue 9.969209968e+36;
        String description "climatological tropopause altitude (period Jan./1990 - Dec./2014) obtained from CESM1 (WACCM) with specified dynamics (MERRA) [m a.s.l.]";
        String long_name "climatological tropopause altitude";
        String units "m";
        String coordinates "time lat";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_ghg_xavkat_rvec {
        String HDF5_OBJ_FULLPATH "/musica_ghg_xavkat_rvec";
        Int32 _Netcdf4Coordinates 0, 8, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the cross averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "right vectors of xavkat of GHG state";
        String units "K-1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_ghg_resolution {
        String HDF5_OBJ_FULLPATH "/musica_ghg_resolution";
        Int32 _Netcdf4Coordinates 0, 5, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "parameter for vertical representativeness for greenhouse gas species (state vector {ln[N2O],ln[CH4]}); parameter 1: centre (Eq. 3.24 of Rodgers 2000)\\n parameter 2: resolving length (Eq. 3.23 and 3.24 of Rodgers, 2000)\\n parameter 3: layer width per degree of freedom (Purser and Huang, 1993)";
        String long_name "resolution parameter for GHG state";
        String units "m";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_fit_quality {
        String HDF5_OBJ_FULLPATH "/musica_fit_quality";
        Int32 _Netcdf4Coordinates 0, 3;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "RMS values of the residual of the spectral fit; parameter 1: RMS for the full residual\\n parameter 2: RMS for the systematic residual (+/-2cm-1 running mean of the full residual)\\n parameter 3: RMS for the random residual (residual that remains after removing the systematic residual from the full residual)";
        String long_name "quality of spectral fit";
        String units "nW cm-2 sr-1 (cm-1)-1";
        String coordinates "time lat lon";
    }
    /eumetsat_cloud_area_fraction {
        String HDF5_OBJ_FULLPATH "/eumetsat_cloud_area_fraction";
        Float32 _FillValue 9.969209968e+36;
        String description "L2 cloud coverage";
        String long_name "EUMETSAT L2 fractional cloud cover";
        String standard_name "cloud_area_fraction";
        String units "1";
        String comment "corresponds to cloud formations index 1 of EUMETSAT L2 PPF variable fractional_cloud_cover, source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_st {
        String HDF5_OBJ_FULLPATH "/musica_st";
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "retrieved surface skin temperature [K]";
        String long_name "retrieved surface skin temperature";
        String units "K";
        String coordinates "time lat lon";
    }
    /musica_ghg_avk_rank {
        String HDF5_OBJ_FULLPATH "/musica_ghg_avk_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm)";
        String long_name "rank of avk of GHG state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_error {
        String HDF5_OBJ_FULLPATH "/musica_hno3_error";
        Int32 _Netcdf4Coordinates 0, 2, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "error for nitric acid (state vector {ln[HNO3]}, i.e. relative error); parameter 1: sqrt of diagonal elements of uncertainty covariances due to retrieval fit noise\\n parameter 2: sqrt of diagonal elements of uncertainty covariances due to IASI instrumental noise covariances (according to Pequignot et al., 2008)\\n  parameter 3: sqrt of diagonal elements of uncertainty covariances due to atmospheric temperature a priori uncertainty (depends strongly on assumed temperature a priori uncertainty covariances)";
        String long_name "error for HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_st_apriori {
        String HDF5_OBJ_FULLPATH "/musica_st_apriori";
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori surface skin temperature [K] (source: EUMETSAT L2)";
        String long_name "a priori surface skin temperature";
        String units "K";
        String coordinates "time lat lon";
    }
    /musica_ghg {
        String HDF5_OBJ_FULLPATH "/musica_ghg";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "retrieved profiles of greenhouse gas species (state vector {[N2O],[CH4]}) as mixing ratios in ppmv";
        String long_name "retrieved GHG state";
        String units "1e-6";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_hno3_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/musica_hno3_xavkat_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the cross averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "rank of xavkat of HNO3 state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_at {
        String HDF5_OBJ_FULLPATH "/musica_at";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "retrieved atmospheric temperature [K]";
        String long_name "retrieved AT state";
        String units "K";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_fit_quality_flag {
        String HDF5_OBJ_FULLPATH "/musica_fit_quality_flag";
        Int32 _Netcdf4Dimid 0;
        String description "0:poor quality; 1:restricted quality; 2:fair quality; 3:good quality";
        String long_name "Indicator for quality of spectral fit";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_xavkat_val {
        String HDF5_OBJ_FULLPATH "/musica_hno3_xavkat_val";
        Int32 _Netcdf4Coordinates 0, 10;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the cross averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "singular values of xavkat of HNO3 state";
        String units "1";
        String coordinates "time lat lon";
    }
    /surface_emissivity_wn {
        String HDF5_OBJ_FULLPATH "/surface_emissivity_wn";
        String CLASS "DIMENSION_SCALE";
        String NAME "surface_emissivity_wn";
        Int32 _Netcdf4Dimid 15;
        String description "wavenumber scale for surface emissivity data [cm-1]";
        String long_name "spectral bins for surface emissivity data";
        String units "cm-1";
    }
    /eumetsat_h2o {
        String HDF5_OBJ_FULLPATH "/eumetsat_h2o";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        String description "EUMETSAT L2 PPF H2O profiles (state vector {[H2O]}) as mixing ratios in ppmv represented on altitude grid according to musica_altitude_levels";
        String long_name "EUMETSAT L2 PPF H2O profiles";
        String units "1e-6";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon musica_altitude_levels";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_wv {
        String HDF5_OBJ_FULLPATH "/musica_wv";
        Int32 _Netcdf4Coordinates 0, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "retrieved profiles of water vapour species (state vector {[H2O],[HDO]}) as mixing ratios in ppmv";
        String long_name "retrieved WV state";
        String units "1e-6";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wvp_error {
        String HDF5_OBJ_FULLPATH "/musica_wvp_error";
        Int32 _Netcdf4Coordinates 0, 2, 13, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "error for water vapour proxy species (state vector {0.5*(ln[H2O]+ln[HDO]),(ln[HDO]-ln[H2O])}, i.e. relative error); parameter 1: sqrt of diagonal elements of uncertainty covariances due to retrieval fit noise\\n parameter 2: sqrt of diagonal elements of uncertainty covariances due to IASI instrumental noise covariances (according to Pequignot et al., 2008)\\n  parameter 3: sqrt of diagonal elements of uncertainty covariances due to atmospheric temperature a priori uncertainty (depends strongly on assumed temperature a priori uncertainty covariances)";
        String long_name "error for WV proxy state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_hno3_avk_lvec {
        String HDF5_OBJ_FULLPATH "/musica_hno3_avk_lvec";
        Int32 _Netcdf4Coordinates 0, 9, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm)";
        String long_name "left vectors of avk of HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /eumetsat_processor_major_version {
        String HDF5_OBJ_FULLPATH "/eumetsat_processor_major_version";
        String description "L2 (EUMETSAT netcdf) processor major version";
        String long_name "EUMETSAT L2 PPF major version number";
        String units "1";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_hno3_apriori_amp {
        String HDF5_OBJ_FULLPATH "/musica_hno3_apriori_amp";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori assumed amplitude of nitric acid variability (state vector {ln[HNO3]})";
        String long_name "a priori amplitude of HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /observation_id {
        String HDF5_OBJ_FULLPATH "/observation_id";
        String CLASS "DIMENSION_SCALE";
        String NAME "observation_id";
        Int32 _Netcdf4Dimid 0;
        String description "profile variable for uniquely identifying individual profiles/observations";
        String long_name "profile/observation identifier";
        String cf_role "profile_id";
        String units "1";
    }
    /musica_at_avk_val {
        String HDF5_OBJ_FULLPATH "/musica_at_avk_val";
        Int32 _Netcdf4Coordinates 0, 6;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "leading singular values of the averaging kernel for atmospheric temperature (state vector in K)";
        String long_name "singular values of avk of AT state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_at_dofs {
        String HDF5_OBJ_FULLPATH "/musica_at_dofs";
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "degrees of freedom for signal (trace of the averaging kernel matrix) for atmospheric temperature (state vector in K)";
        String long_name "dofs for AT state";
        String units "1";
        String coordinates "time lat lon";
    }
    /hno3_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/hno3_xavkat_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         6";
        Int32 _Netcdf4Dimid 10;
    }
    /wv_avk_rank {
        String HDF5_OBJ_FULLPATH "/wv_avk_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.        17";
        Int32 _Netcdf4Dimid 11;
    }
    /eumetsat_cloud_test_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_cloud_test_flag";
        Int32 _Netcdf4Dimid 0;
        String description "Results of cloud test";
        String long_name "EUMETSAT L2 cloud test";
        String units "1";
        String comment "only for EUMETSAT L2 PPF versions 4 and 5, source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
    }
    /musica_ghg_xavkat_rank {
        String HDF5_OBJ_FULLPATH "/musica_ghg_xavkat_rank";
        Float32 _FillValue -127.;
        Int32 _Netcdf4Dimid 0;
        String description "rank (number of leading singular values) of the cross averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "rank of xavkat of GHG state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_hno3_xavkat_lvec {
        String HDF5_OBJ_FULLPATH "/musica_hno3_xavkat_lvec";
        Int32 _Netcdf4Coordinates 0, 10, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the cross averaging kernel for nitric acid (state vector {ln[HNO3]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "left vectors of xavkat of HNO3 state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /eumetsat_cloud_formation_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_cloud_formation_flag";
        String description "origin of the characterisation of the cloud formations";
        String long_name "EUMETSAT L2 cloud formations origin";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_iterations {
        String HDF5_OBJ_FULLPATH "/musica_iterations";
        Int32 _Netcdf4Dimid 0;
        String description "number of iterations needed for the retrieval process";
        String long_name "number of iterations";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_altitude_levels {
        String HDF5_OBJ_FULLPATH "/musica_altitude_levels";
        Int32 _Netcdf4Coordinates 0, 1;
        Int32 _Netcdf4Dimid 0;
        String description "atmospheric altitude levels [m a.s.l.]";
        String long_name "altitude above sea level";
        String standard_name "altitude";
        String units "m";
        String axis "Z";
        String positive "up";
    }
    /musica_wv_xavkat_lvec {
        String HDF5_OBJ_FULLPATH "/musica_wv_xavkat_lvec";
        Int32 _Netcdf4Coordinates 0, 13, 12, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the cross averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm) with respect to atmospheric temperature in K";
        String long_name "left vectors of xavkat of WV state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_ghg_avk_rvec {
        String HDF5_OBJ_FULLPATH "/musica_ghg_avk_rvec";
        Int32 _Netcdf4Coordinates 0, 13, 7, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the averaging kernel for greenhouse gas species (state vector {ln[N2O],ln[CH4]}, natural logarithm)";
        String long_name "right vectors of avk of GHG state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_ghg_dofs {
        String HDF5_OBJ_FULLPATH "/musica_ghg_dofs";
        Int32 _Netcdf4Coordinates 0, 13;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "degrees of freedom for signal (trace of the averaging kernel matrix) for greenhouse gas species (state vector {ln[N2O],ln[CH4]})";
        String long_name "dofs for GHG state";
        String units "1";
        String coordinates "time lat lon";
    }
    /musica_at_avk_rvec {
        String HDF5_OBJ_FULLPATH "/musica_at_avk_rvec";
        Int32 _Netcdf4Coordinates 0, 6, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "right leading singular vectors of the averaging kernel atmospheric temperature (state vector in K)";
        String long_name "right vectors of avk of AT state";
        String units "K-1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /eumetsat_convergence_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_convergence_flag";
        String description "0:OEM not attempted; 1:OEM aborted because first guess residuals too high; 2:The minimisation did not converge, sounding rejected; 3:The minimisation did not converge, sounding accepted; 4:The minimisation converged but sounding rejected; 5:The minimisation converged, sounding accepted";
        String long_name "EUMETSAT L2 PPF OEM convergence";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /eumetsat_cloud_summary_flag {
        String HDF5_OBJ_FULLPATH "/eumetsat_cloud_summary_flag";
        String description "1:The IASI IFOV is clear; 2:The IASI IFOV is processed as cloud-free but small cloud contamination possible; 3:The IASI IFOV is partially covered by clouds; 4:High or full cloud coverage";
        String long_name "EUMETSAT L2 cloudiness assessment summary";
        String units "1";
        String comment "source: EUMETSAT L2 netcdf file";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /atmospheric_levels {
        String HDF5_OBJ_FULLPATH "/atmospheric_levels";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.        29";
        Int32 _Netcdf4Dimid 1;
    }
    /musica_hno3 {
        String HDF5_OBJ_FULLPATH "/musica_hno3";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "retrieved profiles of nitric acid ([HNO3]) as mixing ratios in ppmv";
        String long_name "retrieved HNO3 state";
        String units "1e-6";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_wv_avk_lvec {
        String HDF5_OBJ_FULLPATH "/musica_wv_avk_lvec";
        Int32 _Netcdf4Coordinates 0, 13, 11, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "left leading singular vectors of the averaging kernel for water vapour species (state vector {ln[H2O],ln[HDO]}, natural logarithm)";
        String long_name "left vectors of avk of WV state";
        String units "1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /musica_apriori_cl {
        String HDF5_OBJ_FULLPATH "/musica_apriori_cl";
        Int32 _Netcdf4Coordinates 0, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "a priori assumed vertical correlation length for atmospheric variability";
        String long_name "a priori vertical correlation length";
        String units "m";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /time_local_solar {
        String HDF5_OBJ_FULLPATH "/time_local_solar";
        Float64 _FillValue -2147483647.;
        String description "local solar time (considering eccentricity of the orbit of the Earth) given in seconds relative to solar noon";
        String long_name "local solar time";
        String units "s";
        String coordinates "time lat lon";
        Int32 _Netcdf4Dimid 0;
    }
    /musica_at_reg {
        String HDF5_OBJ_FULLPATH "/musica_at_reg";
        Int32 _Netcdf4Coordinates 0, 4, 1;
        Float32 _FillValue 9.969209968e+36;
        Int32 _Netcdf4Dimid 0;
        String description "regularisation parameter for atmospheric temperature (state vector in K); parameter 1: L0 coefficients\\n parameter 2: L1 coefficients\\n parameter 3: L2 coefficients";
        String long_name "regularisation parameter for AT state";
        String units "K-1";
        String coordinates "time lat lon musica_altitude_levels";
    }
    /resolution_parameter {
        String HDF5_OBJ_FULLPATH "/resolution_parameter";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         3";
        Int32 _Netcdf4Dimid 5;
    }
    /at_avk_rank {
        String HDF5_OBJ_FULLPATH "/at_avk_rank";
        String CLASS "DIMENSION_SCALE";
        String NAME "This is a netCDF dimension but not a netCDF variable.         8";
        Int32 _Netcdf4Dimid 6;
    }
}