netcdf corvisstpx2drectg16v4minnisX1.c1.20190430.235025 { dimensions: line = 728 ; element = 672 ; variables: int time ; time:valid_range = 0, 86400 ; time:units = "seconds since 2019-04-30 00:00:00 UTC" ; time:long_name = "Time offset from base_time" ; time:NOTE = "This is the nominal image time" ; float scanline_time(line) ; scanline_time:valid_range = 0.f, 24.f ; scanline_time:missing_value = -99.f ; scanline_time:units = "hr" ; scanline_time:long_name = "Scanline time in GMT" ; scanline_time:NOTE = "This is the actual time per scanline (nominal image time + time to scan to that point)" ; float latitude(line, element) ; latitude:valid_range = -90.f, 90.f ; latitude:missing_value = -999.f ; latitude:long_name = "North latitude" ; latitude:units = "degree_N" ; float longitude(line, element) ; longitude:valid_range = -180.f, 180.f ; longitude:missing_value = -999.f ; longitude:long_name = "East longitude" ; longitude:units = "degree_E" ; float reflectance_vis(line, element) ; reflectance_vis:valid_range = 0.f, 1.6f ; reflectance_vis:missing_value = -99.f ; reflectance_vis:long_name = "Visible reflectance (0.64 um)" ; reflectance_vis:units = "unitless" ; reflectance_vis:coordinates = "longitude latitude" ; float temperature_sir(line, element) ; temperature_sir:valid_range = 160.f, 340.f ; temperature_sir:missing_value = -99.f ; temperature_sir:long_name = "Solar Infrared temperature (3.9 um)" ; temperature_sir:units = "K" ; temperature_sir:coordinates = "longitude latitude" ; float temperature_ir(line, element) ; temperature_ir:valid_range = 160.f, 340.f ; temperature_ir:missing_value = -99.f ; temperature_ir:long_name = "Infrared Channel temperature (11.2 um)" ; temperature_ir:units = "K" ; temperature_ir:coordinates = "longitude latitude" ; float temperature_sw(line, element) ; temperature_sw:valid_range = 160.f, 340.f ; temperature_sw:missing_value = -99.f ; temperature_sw:long_name = "Split-Window Channel temperature (12.3 um)" ; temperature_sw:units = "K" ; temperature_sw:coordinates = "longitude latitude" ; float cloud_ir_emittance(line, element) ; cloud_ir_emittance:valid_range = 0.f, 1.1f ; cloud_ir_emittance:missing_value = -99.f ; cloud_ir_emittance:long_name = "Cloud IR emittance" ; cloud_ir_emittance:units = "unitless" ; cloud_ir_emittance:coordinates = "longitude latitude" ; int cloud_phase(line, element) ; cloud_phase:valid_range = 0, 7 ; cloud_phase:missing_value = -99 ; cloud_phase:long_name = "Cloud phase" ; cloud_phase:units = "0=clear with snow/ice, 1=water, 2=ice, 3=no retrieval, 4=clear, 5=bad retrieval, 6=weak water, 7=weak ice" ; cloud_phase:coordinates = "longitude latitude" ; float cloud_visible_optical_depth(line, element) ; cloud_visible_optical_depth:valid_range = 0.f, 150.f ; cloud_visible_optical_depth:missing_value = -99.f ; cloud_visible_optical_depth:long_name = "Cloud optical depth" ; cloud_visible_optical_depth:units = "unitless" ; cloud_visible_optical_depth:coordinates = "longitude latitude" ; float cloud_particle_size(line, element) ; cloud_particle_size:valid_range = 0.f, 150.f ; cloud_particle_size:missing_value = -99.f ; cloud_particle_size:long_name = "Effective particle radius or diameter" ; cloud_particle_size:units = "um" ; cloud_particle_size:coordinates = "longitude latitude" ; cloud_particle_size:value_1 = "If cloud_phase = water, this parameter is radius" ; cloud_particle_size:value_2 = "If cloud_phase = ice, this parameter is diameter" ; float cloud_lwp_iwp(line, element) ; cloud_lwp_iwp:valid_range = 0.f, 6000.f ; cloud_lwp_iwp:missing_value = -99.f ; cloud_lwp_iwp:long_name = "Liquid or ice water path" ; cloud_lwp_iwp:units = "g/m^2" ; cloud_lwp_iwp:coordinates = "longitude latitude" ; cloud_lwp_iwp:value_1 = "If cloud_phase = water, this parameter is Liquid Water Path" ; cloud_lwp_iwp:value_2 = "If cloud_phase = ice, this parameter is Ice Water Path" ; float cloud_effective_temperature(line, element) ; cloud_effective_temperature:valid_range = 160.f, 340.f ; cloud_effective_temperature:missing_value = -99.f ; cloud_effective_temperature:long_name = "Cloud effective temperature" ; cloud_effective_temperature:units = "K" ; cloud_effective_temperature:coordinates = "longitude latitude" ; float cloud_top_pressure(line, element) ; cloud_top_pressure:valid_range = 0.f, 1100.f ; cloud_top_pressure:missing_value = -99.f ; cloud_top_pressure:long_name = "Cloud top pressure" ; cloud_top_pressure:units = "hPa" ; cloud_top_pressure:coordinates = "longitude latitude" ; float cloud_effective_pressure(line, element) ; cloud_effective_pressure:valid_range = 0.f, 1100.f ; cloud_effective_pressure:missing_value = -99.f ; cloud_effective_pressure:long_name = "Cloud effective pressure" ; cloud_effective_pressure:units = "hPa" ; cloud_effective_pressure:coordinates = "longitude latitude" ; float cloud_bottom_pressure(line, element) ; cloud_bottom_pressure:valid_range = 0.f, 1100.f ; cloud_bottom_pressure:missing_value = -99.f ; cloud_bottom_pressure:long_name = "Cloud base pressure" ; cloud_bottom_pressure:units = "hPa" ; cloud_bottom_pressure:coordinates = "longitude latitude" ; float cloud_top_height(line, element) ; cloud_top_height:valid_range = 0.f, 20.f ; cloud_top_height:missing_value = -99.f ; cloud_top_height:long_name = "Cloud top height" ; cloud_top_height:units = "km" ; cloud_top_height:coordinates = "longitude latitude" ; float cloud_effective_height(line, element) ; cloud_effective_height:valid_range = 0.f, 20.f ; cloud_effective_height:missing_value = -99.f ; cloud_effective_height:long_name = "Cloud effective height" ; cloud_effective_height:units = "km" ; cloud_effective_height:coordinates = "longitude latitude" ; float cloud_bottom_height(line, element) ; cloud_bottom_height:valid_range = 0.f, 20.f ; cloud_bottom_height:missing_value = -99.f ; cloud_bottom_height:long_name = "Cloud bottom height" ; cloud_bottom_height:units = "km" ; cloud_bottom_height:coordinates = "longitude latitude" ; float broadband_shortwave_albedo(line, element) ; broadband_shortwave_albedo:valid_range = 0.f, 150.f ; broadband_shortwave_albedo:missing_value = -99.f ; broadband_shortwave_albedo:long_name = "Broadband SW albedo" ; broadband_shortwave_albedo:units = "%" ; broadband_shortwave_albedo:coordinates = "longitude latitude" ; float broadband_longwave_flux(line, element) ; broadband_longwave_flux:valid_range = 0.f, 500.f ; broadband_longwave_flux:missing_value = -99.f ; broadband_longwave_flux:long_name = "Broadband LW flux" ; broadband_longwave_flux:units = "W/m^2" ; broadband_longwave_flux:coordinates = "longitude latitude" ; float temperature_wv(line, element) ; temperature_wv:valid_range = 160.f, 340.f ; temperature_wv:missing_value = -99.f ; temperature_wv:long_name = "BT 6.2um/Water Vapor" ; temperature_wv:units = "K" ; temperature_wv:coordinates = "longitude latitude" ; float cloud_top_temperature(line, element) ; cloud_top_temperature:valid_range = 100.f, 360.f ; cloud_top_temperature:missing_value = -99.f ; cloud_top_temperature:long_name = "cloud top temperature" ; cloud_top_temperature:units = "K" ; cloud_top_temperature:coordinates = "longitude latitude" ; float cloud_bottom_temperature(line, element) ; cloud_bottom_temperature:valid_range = 100.f, 360.f ; cloud_bottom_temperature:missing_value = -99.f ; cloud_bottom_temperature:long_name = "cloud bottom temperature" ; cloud_bottom_temperature:units = "K" ; cloud_bottom_temperature:coordinates = "longitude latitude" ; int base_time ; base_time:long_name = "base time in epoch" ; base_time:units = "seconds since 1970-1-1 00:00:00 GMT" ; double time_offset ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2019-04-30 00:00:00 UTC" ; time_offset:NOTE = "This is the nominal image time" ; // global attributes: :User_Note = "All of the datasets provided on this website are part of ongoing research projects.Users of the data for research leading to conference-level or peer-reviewed publications should contact Dr. William L. Smith Jr. (william.l.smith@nasa.gov) before publishing any papers that include data from this site. The source of the data should be properly acknowledged and/or co-authorship should be offered depending on the level of documentation and contribution of the particular dataset.If only the satellite imagery are used then we ask only for a simple acknowledgment: \"The images were obtained from the NASA Langley Cloud and Radiation Research Group, http://satcorps.larc.nasa.gov.\" For any derived cloud, icing, and radiation products, it is in the best interest of individual researchers who use these datasets to ensure that they are using the latest and highest quality products available. Either Dr. Smith or other group members can provide the proper references, caveats, or level of participation needed for any given request." ; :NetCDF_Version = "netcdf 4.0.1" ; :facility_id = "X1" ; :site_id = "cor" ; :location = "cor" ; :zeb_platform = "corvisstpx2drectg16v4minnisX1.c1" ; :history = "2020-02-06T23:56:20UTC Rectilinear files created on machine ssai10 using McIDAS v2018.2, gfortran. G-16.2019120.2350.cldprod-rect.02km.pix.nc" ; :input_files = "GOES-16" ; :resolution = "2-km" ; :reflectance_vis_note1 = "effective_wavelength_visst = 0.64 um" ; :reflectance_vis_note2 = "spectral_width_instrument = 0.60 um - 0.68 um" ; :temperature_sir_note1 = "effective_wavelength_visst = 3.9 um" ; :temperature_sir_note2 = "spectral_width_instrument = 3.80 um - 4.0 um" ; :temperature_ir_note1 = "effective_wavelength_visst = 11.2 um" ; :temperature_ir_note2 = "spectral_width_instrument = 10.8 um - 11.6 um" ; :temperature_sw_note1 = "effective_wavelength_visst = 12.4 um" ; :temperature_sw_note2 = "spectral_width_instrument = 11.8 - 12.8 um" ; :Version = "V4.2.3" ; :longwave_NB_BB_correlation = "The LW NB-BB correlation is given by a method similar to the radiance-based approach in Doelling, D.R., M. Sun, L.T. Nguyen, M.L.Nordeen, C.O.Haney, D.F. Keyes, and P.E. Mlynczak, \"Advances in Geostationary-Derived Longwave Fluxes for the CERES Synoptic (SYN1deg) Product\", J. Atmos. Oceanic Technol., Vol. 33 (3), pp. 503-521 (March 2016) doi:10.1175/JTECH-D-15-0147.1 (with modifications); this data includes application of a regional 5x5 degree monthly normalization to Edition 4 CERES Aqua SSF1deg LW fluxes (linear correction)." ; :shortwave_NB_BB_correlation = "The SW NB-BB correlation is given by a method described in Minnis, P., K. Bedka, Q. Trepte, C. R. Yost, S. T. Bedka, B. Scarino, K. Khlopenkov, and M. M. Khaiyer, 2016: A consistent long-term cloud and clear-sky radiation property dataset from the Advanced Very High Resolution Radiometer (AVHRR). Climate Algorithm Theoretical Basis Document (C-ATBD), CDRP-ATBD-0826 Rev 1 - NASA, NOAA CDR Program, 159 pp., DOI:10.789/V5HT2M8T, www.ncdc.noaa.gov/cdr/atmospheric/avhrr-cloud-properties-nasa. BB SW albedoes were then corrected by converting to SW flux and applying a regional 5x5 degree monthly normalization to Edition 4 CERES Aqua SSF1deg SW fluxes (linear correction), where SZA < 86; final/corrected albedoes constrained to minimum 5%, maximum 95%)." ; :IR_calibration = "The GOES-16 IR calibration was based on the nominal equations used in Mcidas and found at http://www.oso.noaa.gov/goes/goes-calibration/gvar-conversion.htm" ; :VISST = "NASA-Langley cloud and radiation products are produced using a suite of algorithms- VISST (Visible Infrared Solar-infrared Split-Window Technique), SIST (Solar-infrared Infrared Split-Window Technique) and SINT (Solar-infrared Infrared Near-Infrared Technique), now collectively called SatCORPS (Satellite Cloud Observations and Radiative Property retrieval System). The techniques use GOES-16 channels to detect clouds and retrieve cloud microphysics. Atmospheric profiles are obtained from MERRA2. REFERENCE: Minnis, P., et al., 2001: A near-real time method for deriving cloud and radiation properties from satellites for weather and climate studies. Proc. AMS 11th Conf. Satellite Meteorology and Oceanography,Madison, WI, Oct. 15-18, 477-480. http://www-pm.larc.nasa.gov/arm_refs.html" ; :NCO = "4.3.0" ; :VERSION = "This version was processed historically and is an intermediate version. As updates are made, the data will be reprocessed in the future and replaced. Note: these files are derived from GOES-16 MODE 6 full disk scans at ~10 min resolution. These files are not in the same format/projection of the standard SatCORPS product; they have been reprojected into a rectilinear projection to better match convection data within the cor1goecnvM1.c1 datastream. SatCORPS data in the original satellite projection can be made available upon request." ; :visible_calibration = "The GOES-16 visible calibration equation is Rad(0.64um) = (g0)*(C-C0), where g0=0.1519,C= visible channel count, C0=visible channel offset (128.0). REFERENCE: Nguyen, L, D.R. Doelling, P. Minnis, J.K. Ayers, 2004, Rapid Technique to cross calibrate satellite imager with visible channels, Proc. of 49th SPIE Meeting, Denver, CO, Aug. 2-6, 2004. http://www-pm.larc.nasa.gov/arm_refs.html" ; }