netcdf mcqmwrret1liljclouS1.s2.20180309.000015 { dimensions: time = UNLIMITED ; // (3395 currently) nlevels = 54 ; nvbias = 10000 ; variables: int base_time ; base_time:string = "2018-03-09 00:00:00 0:00" ; base_time:long_name = "Base time in Epoch" ; base_time:units = "seconds since 1970-1-1 0:00:00 0:00" ; base_time:ancillary_variables = "time_offset" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2018-03-09 00:00:00 0:00" ; time_offset:ancillary_variables = "base_time" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2018-03-09 00:00:00 0:00" ; time:standard_name = "time" ; float sonde_level(nlevels) ; sonde_level:long_name = "Sonde level height" ; sonde_level:units = "km" ; sonde_level:standard_name = "height" ; float be_pwv(time) ; be_pwv:long_name = "Precipitable water vapor best-estimate value" ; be_pwv:units = "cm" ; be_pwv:missing_value = -9999.f ; be_pwv:comment = "Equal to stat2_pwv during periods where phys_pwv has bad quality, and equal to phys_pwv at all other times. If both stat2_pwv and phys_pwv have bad quality be_pwv is set to missing_value. In addition, be_pwv values whose quality of the originating value is indeterminate, are set to missing_value." ; be_pwv:ancillary_variables = "qc_be_pwv" ; be_pwv:standard_name = "lwe_thickness_of_atmosphere_mass_content_of_water_vapor" ; int qc_be_pwv(time) ; qc_be_pwv:long_name = "Quality check results on variable: Precipitable water vapor best-estimate value" ; qc_be_pwv:units = "1" ; qc_be_pwv:description = "This field contains qc values which should be interpreted as listed:\n", "0 = Good: Data exists and passed all qc tests.\n", "1 = Indeterminate: Data may be bad, further analysis recommended.\n", "2 = Bad: Data has a bad value.\n", "3 = Missing: Data is missing." ; qc_be_pwv:fail_min = -1.f ; qc_be_pwv:fail_max = 10.f ; qc_be_pwv:flag_method = "bit" ; qc_be_pwv:standard_name = "quality_flag" ; float be_lwp(time) ; be_lwp:long_name = "Liquid water path best-estimate value" ; be_lwp:units = "g/m^2" ; be_lwp:missing_value = -9999.f ; be_lwp:comment = "Equal to stat2_lwp during periods where phys_lwp has bad quality, and equal to phys_lwp at all other times. If both stat2_lwp and phys_lwp have bad quality be_lwp is set to missing_value. In addition, be_lwp values whose quality of the originating value is indeterminate, are set to missing_value." ; be_lwp:ancillary_variables = "qc_be_lwp" ; be_lwp:standard_name = "atmosphere_mass_content_of_cloud_liquid_water" ; int qc_be_lwp(time) ; qc_be_lwp:long_name = "Quality check results on variable: Liquid water path best-estimate value" ; qc_be_lwp:units = "1" ; qc_be_lwp:description = "This field contains qc values which should be interpreted as listed:\n", "0 = Good: Data exists and passed all qc tests.\n", "1 = Indeterminate: Data may be bad, further analysis recommended.\n", "2 = Bad: Data has a bad value.\n", "3 = Missing: Data is missing." ; qc_be_lwp:fail_min = -50.f ; qc_be_lwp:flag_method = "bit" ; qc_be_lwp:standard_name = "quality_flag" ; int be_retrieval_status(time) ; be_retrieval_status:long_name = "Best-estimate retrieval status" ; be_retrieval_status:units = "1" ; be_retrieval_status:flag_values = 0, 1, 2 ; be_retrieval_status:flag_meanings = "no_retrieval physical_retrieval stat2_retrieval" ; be_retrieval_status:flag_0_description = "be_lwp and be_pwv values were missing, no retrieval performed" ; be_retrieval_status:flag_1_description = "physical retrieval performed" ; be_retrieval_status:flag_2_description = "stat2 retrieval performed" ; float tbsky23(time) ; tbsky23:long_name = "Sky brightness temperature at 23.8 GHz" ; tbsky23:units = "K" ; tbsky23:missing_value = -9999.f ; tbsky23:comment = "The variable was interpolated onto the mwr coordinate grid using a non-ADI technique." ; tbsky23:ancillary_variables = "qc_tbsky23" ; tbsky23:source = "mcqmwrlosS1.b1:tbsky23" ; tbsky23:cell_transform = "time: interpolation" ; int qc_tbsky23(time) ; qc_tbsky23:long_name = "Quality check results on variable: Sky brightness temperature at 23.8 GHz" ; qc_tbsky23:units = "1" ; qc_tbsky23:description = "This field contains qc values which should be interpreted as listed:\n", "0 = Good: Data exists and passed all qc tests.\n", "1 = Indeterminate: Data may be bad, further analysis recommended.\n", "2 = Bad: Data has a bad value.\n", "3 = Missing: Data is missing." ; qc_tbsky23:fail_min = 2.73f ; qc_tbsky23:fail_max = 100.f ; qc_tbsky23:flag_method = "bit" ; qc_tbsky23:standard_name = "quality_flag" ; float tbsky31(time) ; tbsky31:long_name = "Sky brightness temperature at 31.4 GHz" ; tbsky31:units = "K" ; tbsky31:missing_value = -9999.f ; tbsky31:comment = "The variable was interpolated onto the mwr coordinate grid using a non-ADI technique." ; tbsky31:ancillary_variables = "qc_tbsky31" ; tbsky31:source = "mcqmwrlosS1.b1:tbsky31" ; tbsky31:cell_transform = "time: interpolation" ; int qc_tbsky31(time) ; qc_tbsky31:long_name = "Quality check results on variable: Sky brightness temperature at 31.4 GHz" ; qc_tbsky31:units = "1" ; qc_tbsky31:description = "This field contains qc values which should be interpreted as listed:\n", "0 = Good: Data exists and passed all qc tests.\n", "1 = Indeterminate: Data may be bad, further analysis recommended.\n", "2 = Bad: Data has a bad value.\n", "3 = Missing: Data is missing." ; qc_tbsky31:fail_min = 2.73f ; qc_tbsky31:fail_max = 100.f ; qc_tbsky31:flag_method = "bit" ; qc_tbsky31:standard_name = "quality_flag" ; int stat2_tliq_status(time) ; stat2_tliq_status:long_name = "Status flag indicating stat2 cloud liquid water temperature ranges" ; stat2_tliq_status:units = "1" ; stat2_tliq_status:flag_values = 0, 1, 2, 3 ; stat2_tliq_status:flag_meanings = "within_expected_range tliq_zero<=tliqtliq tliq_not_defined" ; stat2_tliq_status:flag_0_description = "tliq within expected range" ; stat2_tliq_status:flag_1_description = "tliq_zero <= tliq < tliq_min" ; stat2_tliq_status:flag_2_description = "tliq_zero > tliq" ; stat2_tliq_status:flag_3_description = "tliq not defined; i.e., unable to determine the temperature of the cloud liquid water" ; stat2_tliq_status:tliq_zero_value = "223 K" ; stat2_tliq_status:tliq_min_value = "243 K" ; int sonde_launch_status(time) ; sonde_launch_status:long_name = "Flag indicating when the sonde launches occurred" ; sonde_launch_status:units = "1" ; sonde_launch_status:source = "mcqabmmetX1.a1:temperature" ; sonde_launch_status:flag_values = 0, 1 ; sonde_launch_status:flag_meanings = "no_sonde_launch sonde_launch" ; sonde_launch_status:flag_1_description = "Sonde was launched at this time" ; sonde_launch_status:flag_0_description = "Sonde did not launch at this time" ; sonde_launch_status:comment = "The variable was interpolated onto the mwr coordinate grid using a non-ADI technique." ; sonde_launch_status:cell_transform = "time: interpolation" ; float lat ; lat:long_name = "North latitude" ; lat:units = "degree_N" ; lat:valid_min = -90.f ; lat:valid_max = 90.f ; lat:standard_name = "latitude" ; float lon ; lon:long_name = "East longitude" ; lon:units = "degree_E" ; lon:valid_min = -180.f ; lon:valid_max = 180.f ; lon:standard_name = "longitude" ; float alt ; alt:long_name = "Altitude above mean sea level" ; alt:units = "m" ; alt:standard_name = "altitude" ; // global attributes: :command_line = "mwrret1liljclou -s mcq -f S1 -b 20161210 -e 20180314 --ceil 300 --data-level 2 --run-samples 1 -R -D 2" ; :Conventions = "ARM-1.3" ; :process_version = "vap-mwrret1liljclou-1.6-0.el7" ; :dod_version = "mwrret1liljclou-c2-1.3" ; :input_datastreams = "mcqceilS1.b1 : 1.4 : 20180308.000002-20180310.000001\n", "mcqabmmetX1.a1 : 1.0 : 20180308.000005-20180309.000006\n", "mcqmwrlosS1.b1 : 2.2 : 20180308.000030-20180310.000034" ; :site_id = "mcq" ; :platform_id = "mwrret1liljclou" ; :facility_id = "S1" ; :data_level = "s2" ; :location_description = "Macquarie Island Cloud and Radiation Experiment (MICRE), Macquarie Island" ; :datastream = "mcqmwrret1liljclouS1.c2" ; :sampling_interval = "20 seconds" ; :doi = "10.5439/1027369" ; :algorithm_reference_1 = "Turner, D.D., S.A. Clough, J.C. Liljegren, E.E. Clothiaux, K. Cady-Pereira, and K.L. Gaustad, 2007: Retrieving liquid water path and precipitable water vapor from Atmospheric Radiation Measurement (ARM) microwave radiometers. IEEE Trans. Geosci. Remote Sens., 45, 3680-3690, doi:10.1109/TGRS.2007.903" ; :authors = "SA Clough, K Cady-Pereira, JC Liljegren, EE Clothiaux, and DD Turner" ; :tb23_static_bias = "Static bias removed from 23.8 GHz channel before retrieval: 0.000000 K" ; :tb31_static_bias = "Static bias removed from 31.4 GHz channel before retrieval: 0.000000 K" ; :tb23_mean_variable_bias = "Variable bias removed from 31.4 GHz channel before retrieval: 0.000000 K" ; :tb31_mean_variable_bias = "Variable bias removed from 31.4 GHz channel before retrieval: 0.550185 K" ; :variable_bias31_status = "variable bias determined from statistical retrieval" ; :tb23_uncertainty = "The 1-sigma uncertainty in the MWR observations at 23.8 GHz: 0.250000 K" ; :tb31_uncertainty = "The 1-sigma uncertainty in the MWR observations at 31.4 GHz: 0.250000 K" ; :vbias_clear_sky_determination_threshold_35ghz_stdev = 0.2f ; :nominal_noise_diode_temperature = "290.000000 K" ; :mean_atmos_radiating_temp_23 = "271.423000 K" ; :mean_atmos_radiating_temp_31 = "268.076000 K" ; :cosmic_background_temperature = "2.750000 K" ; :teflon_window_correction_coef_23 = 0.00164f ; :teflon_window_correction_coef_31 = 0.00217f ; :physical_retrieval_sample = "The retrieval was performed on every sample" ; :physical_retrieval_comment = "PWV and LWP are retrieved using a physical-iterative approach where the atmospheric state (structure) is specified by interpolated radiosonde profiles. The monoRTM model is the forward model used in the retrieval. The retrieval approach uses the optimal estimation methodology, and the covariance of the observations is propagated through the retrieval to provide estimates of the uncertainty in the retrieved parameters." ; :vapor_retrieval_coefficient_0 = 0.02025f ; :stat2_retrieval_comment = "PWV and LWP are retrieved using a statistical method where the retrieval coefficients utilized are predicted from surface meteorological observations. This retrieval also accounts for the temperature of the cloud liquid water. The monoRTM radiative transfer model from A.E.R., Inc., was used to generate the prediction equations and retrieval coefficients. (LiljRet6a)" ; :vapor_retrieval_coefficient_1 = 22.12f ; :vapor_retrieval_coefficient_2 = -13.2f ; :liquid_retrieval_coefficient_0 = -0.01493f ; :liquid_retrieval_coefficient_1 = -0.1123f ; :liquid_retrieval_coefficient_2 = 0.5419f ; :history = "created by user gaustad on machine agate at 16-Dec-2020,19:29:01" ; }