netcdf pacs_goes8_min_v1_gr.20000104.000000 { dimensions: latitude = 60 ; longitude = 55 ; level = 4 ; view = 3 ; time = 3 ; variables: int base_time ; base_time:string = "0:00:00 GMT 04 January 2000 " ; base_time:long_name = "base time in epoch" ; base_time:units = "seconds since 0:00:00 GMT 01 January 1970" ; float level(level) ; level:valid_range = 1.f, 4.f ; level:long_name = "cloud level" ; level:units = "unitless" ; level:value_1 = "Values have different meanings for each parameter." ; float view(view) ; view:valid_range = 1.f, 3.f ; view:long_name = "scene description" ; view:units = "unitless" ; view:value_1 = "Values have different meanings for each parameter." ; double time_offset(time) ; time_offset:long_name = "time offset from base time" ; time_offset:units = "seconds" ; float Latitude(latitude) ; Latitude:valid_range = -90.f, 90.f ; Latitude:long_name = "north latitude" ; Latitude:units = "degrees" ; float Longitude(longitude) ; Longitude:valid_range = -180.f, 180.f ; Longitude:long_name = "east longitude" ; Longitude:units = "degrees" ; float Cloud_Amount(time, level, latitude, longitude) ; Cloud_Amount:valid_range = 0.f, 100.f ; Cloud_Amount:_FillValue = -888.f ; Cloud_Amount:missing_value = -999.f ; Cloud_Amount:long_name = "cloud amount" ; Cloud_Amount:units = "percent cloudy" ; Cloud_Amount:value_1 = "A value of 1. corresponds to total cloud." ; Cloud_Amount:value_2 = "A value of 2. corresponds to ice cloud." ; Cloud_Amount:value_3 = "A value of 3. corresponds to water cloud." ; Cloud_Amount:value_4 = "A value of 4.=supercooled liquid water (slw) cloud." ; float Visible_Optical_Depth(time, level, latitude, longitude) ; Visible_Optical_Depth:valid_range = 0.f, 200.f ; Visible_Optical_Depth:_FillValue = -888.f ; Visible_Optical_Depth:missing_value = -999.f ; Visible_Optical_Depth:long_name = "visible cloud optical depth" ; Visible_Optical_Depth:units = "unitless" ; Visible_Optical_Depth:value_1 = "A value of 1. corresponds to total cloud." ; Visible_Optical_Depth:value_2 = "A value of 2. corresponds to ice cloud." ; Visible_Optical_Depth:value_3 = "A value of 3. corresponds to water cloud." ; Visible_Optical_Depth:value_4 = "A value of 4. = supercooled liquid water cloud." ; float Particle_Size(time, view, latitude, longitude) ; Particle_Size:valid_range = 0.f, 5000.f ; Particle_Size:_FillValue = -888.f ; Particle_Size:missing_value = -999.f ; Particle_Size:long_name = "effective radius (water) or diameter (ice)" ; Particle_Size:units = "microns" ; Particle_Size:value_1 = "A value of 1. = average ice particle effective diameter." ; Particle_Size:value_2 = "A value of 2. = average water droplet effective radius." ; Particle_Size:value_3 = "A value of 3.=avg supercooled liquid water droplet eff. radius." ; float Water_Path(time, view, latitude, longitude) ; Water_Path:valid_range = 0.f, 5000.f ; Water_Path:_FillValue = -888.f ; Water_Path:missing_value = -999.f ; Water_Path:long_name = "water path" ; Water_Path:units = "gm^-2" ; Water_Path:value_1 = "A value of 1. corresponds to ice cloud." ; Water_Path:value_2 = "A value of 2. corresponds to water cloud." ; Water_Path:value_3 = "A value of 3. = supercooled liquid water cloud." ; float Cloud_Center_Height(time, level, latitude, longitude) ; Cloud_Center_Height:valid_range = 0.f, 20.f ; Cloud_Center_Height:_FillValue = -888.f ; Cloud_Center_Height:missing_value = -999.f ; Cloud_Center_Height:long_name = "cloud center height" ; Cloud_Center_Height:units = "kilometers above sea level" ; Cloud_Center_Height:value_1 = "A value of 1. corresponds to total cloud." ; Cloud_Center_Height:value_2 = "A value of 2. corresponds to ice cloud." ; Cloud_Center_Height:value_3 = "A value of 3. corresponds to water cloud." ; Cloud_Center_Height:value_4 = "A value of 4. = supercooled liquid water cloud." ; float Cloud_Temperature(time, view, latitude, longitude) ; Cloud_Temperature:valid_range = 160.f, 330.f ; Cloud_Temperature:_FillValue = -888.f ; Cloud_Temperature:missing_value = -999.f ; Cloud_Temperature:long_name = "cloud temperature" ; Cloud_Temperature:units = "degrees K" ; Cloud_Temperature:value_1 = "A value of 1. corresponds to total cloud." ; Cloud_Temperature:value_2 = "A value of 2. corresponds to ice cloud." ; Cloud_Temperature:value_3 = "A value of 3. corresponds to water cloud" ; float Broadband_Shortwave_Albedo(time, view, latitude, longitude) ; Broadband_Shortwave_Albedo:valid_range = 0.f, 100.f ; Broadband_Shortwave_Albedo:_FillValue = -888.f ; Broadband_Shortwave_Albedo:missing_value = -999.f ; Broadband_Shortwave_Albedo:long_name = "broadband SW albedo for total, clear, and cloudy scene" ; Broadband_Shortwave_Albedo:units = "percent" ; Broadband_Shortwave_Albedo:value_1 = "A value of 1. corresponds to total." ; Broadband_Shortwave_Albedo:value_2 = "A value of 2. corresponds to clear." ; Broadband_Shortwave_Albedo:value_3 = "A value of 3. corresponds to cloud." ; float Broadband_Longwave_Flux(time, view, latitude, longitude) ; Broadband_Longwave_Flux:valid_range = 0.f, 400.f ; Broadband_Longwave_Flux:_FillValue = -888.f ; Broadband_Longwave_Flux:missing_value = -999.f ; Broadband_Longwave_Flux:long_name = "broadband LW flux for total, clear, and cloudy scene" ; Broadband_Longwave_Flux:units = "watts per square meter" ; Broadband_Longwave_Flux:value_1 = "A value of 1. corresponds to total." ; Broadband_Longwave_Flux:value_2 = "A value of 2. corresponds to clear." ; Broadband_Longwave_Flux:value_3 = "A value of 3. corresponds to cloud." ; float Mean_Solar_Zenith_Angle(time, latitude, longitude) ; Mean_Solar_Zenith_Angle:valid_range = 0.f, 90.f ; Mean_Solar_Zenith_Angle:_FillValue = -888.f ; Mean_Solar_Zenith_Angle:missing_value = -999.f ; Mean_Solar_Zenith_Angle:long_name = "solar zenith angle" ; Mean_Solar_Zenith_Angle:units = "degrees" ; float Mean_Viewing_Zenith_Angle(time, latitude, longitude) ; Mean_Viewing_Zenith_Angle:valid_range = 0.f, 90.f ; Mean_Viewing_Zenith_Angle:_FillValue = -888.f ; Mean_Viewing_Zenith_Angle:missing_value = -999.f ; Mean_Viewing_Zenith_Angle:long_name = "viewing zenith angle" ; Mean_Viewing_Zenith_Angle:units = "degrees" ; float Mean_Relative_Azimuth_Angle(time, latitude, longitude) ; Mean_Relative_Azimuth_Angle:valid_range = 0.f, 180.f ; Mean_Relative_Azimuth_Angle:_FillValue = -888.f ; Mean_Relative_Azimuth_Angle:missing_value = -999.f ; Mean_Relative_Azimuth_Angle:long_name = "relative azimuth angle" ; Mean_Relative_Azimuth_Angle:units = "degrees" ; float First_Guess_Skin_Temperature(time, latitude, longitude) ; First_Guess_Skin_Temperature:valid_range = 160.f, 330.f ; First_Guess_Skin_Temperature:_FillValue = -888.f ; First_Guess_Skin_Temperature:missing_value = -999.f ; First_Guess_Skin_Temperature:long_name = "first guess skin temperature" ; First_Guess_Skin_Temperature:units = "degrees K" ; float Final_Skin_Temperature(time, latitude, longitude) ; Final_Skin_Temperature:valid_range = 160.f, 330.f ; Final_Skin_Temperature:_FillValue = -888.f ; Final_Skin_Temperature:missing_value = -999.f ; Final_Skin_Temperature:long_name = "final skin temperature" ; Final_Skin_Temperature:units = "degrees K" ; float Ch3_Clear_Sky_Skin_Temp(time, latitude, longitude) ; Ch3_Clear_Sky_Skin_Temp:valid_range = 160.f, 330.f ; Ch3_Clear_Sky_Skin_Temp:_FillValue = -888.f ; Ch3_Clear_Sky_Skin_Temp:missing_value = -999.f ; Ch3_Clear_Sky_Skin_Temp:long_name = "clear sky temperature- ch. 3" ; Ch3_Clear_Sky_Skin_Temp:units = "degrees K" ; float Ch4_Clear_Sky_Skin_Temp(time, latitude, longitude) ; Ch4_Clear_Sky_Skin_Temp:valid_range = 160.f, 330.f ; Ch4_Clear_Sky_Skin_Temp:_FillValue = -888.f ; Ch4_Clear_Sky_Skin_Temp:missing_value = -999.f ; Ch4_Clear_Sky_Skin_Temp:long_name = "clear sky temperature- ch. 4" ; Ch4_Clear_Sky_Skin_Temp:units = "degrees K" ; float Ch5_Clear_Sky_Skin_Temp(time, latitude, longitude) ; Ch5_Clear_Sky_Skin_Temp:valid_range = 160.f, 330.f ; Ch5_Clear_Sky_Skin_Temp:_FillValue = -888.f ; Ch5_Clear_Sky_Skin_Temp:missing_value = -999.f ; Ch5_Clear_Sky_Skin_Temp:long_name = "clear sky temperature- ch. 5" ; Ch5_Clear_Sky_Skin_Temp:units = "degrees K" ; float StanDev_of_Particle_Size(time, view, latitude, longitude) ; StanDev_of_Particle_Size:long_name = "standard deviation of effective radius/diameter" ; StanDev_of_Particle_Size:units = "microns" ; StanDev_of_Particle_Size:value_1 = "A value of 1. = average ice particle effective diameter." ; StanDev_of_Particle_Size:value_2 = "A value of 2. = average water droplet effective radius." ; StanDev_of_Particle_Size:value_3 = "A value of 3.=avg supercooled liquid water droplet eff. radius." ; float StanDev_of_Water_Path(time, view, latitude, longitude) ; StanDev_of_Water_Path:long_name = "standard deviation of water path" ; StanDev_of_Water_Path:units = "gm^-2" ; StanDev_of_Water_Path:value_1 = "A value of 1. corresponds to ice cloud." ; StanDev_of_Water_Path:value_2 = "A value of 2. corresponds to water cloud" ; StanDev_of_Water_Path:value_3 = "A value of 3. = supercooled liquid water cloud." ; float StanDev_of_Cloud_Center_Height(time, level, latitude, longitude) ; StanDev_of_Cloud_Center_Height:long_name = "cloud center height standard deviation" ; StanDev_of_Cloud_Center_Height:units = "kilometers above sea level" ; StanDev_of_Cloud_Center_Height:value_1 = "A value of 1. corresponds to total cloud." ; StanDev_of_Cloud_Center_Height:value_2 = "A value of 2. corresponds to ice cloud." ; StanDev_of_Cloud_Center_Height:value_3 = "A value of 3. corresponds to water cloud." ; StanDev_of_Cloud_Center_Height:value_4 = "A value of 4. = supercooled liquid water cloud." ; float StanDev_of_Cloud_Temperature(time, level, latitude, longitude) ; StanDev_of_Cloud_Temperature:long_name = "standard deviation of cloud temperature" ; StanDev_of_Cloud_Temperature:units = "degrees K" ; StanDev_of_Cloud_Temperature:value_1 = "A value of 1. corresponds to total cloud." ; StanDev_of_Cloud_Temperature:value_2 = "A value of 2. corresponds to ice cloud." ; StanDev_of_Cloud_Temperature:value_3 = "A value of 3. corresponds to water cloud." ; StanDev_of_Cloud_Temperature:value_4 = "A value of 4. = supercooled liquid water cloud." ; float StanDev_of_Visible_Optical_Depth(time, level, latitude, longitude) ; StanDev_of_Visible_Optical_Depth:valid_range = 0.f, 200.f ; StanDev_of_Visible_Optical_Depth:_FillValue = -888.f ; StanDev_of_Visible_Optical_Depth:missing_value = -999.f ; StanDev_of_Visible_Optical_Depth:long_name = "standard deviation of visible optical depth" ; StanDev_of_Visible_Optical_Depth:units = "unitless" ; StanDev_of_Visible_Optical_Depth:value_1 = "A value of 1. corresponds to total cloud." ; StanDev_of_Visible_Optical_Depth:value_2 = "A value of 2. corresponds to ice cloud." ; StanDev_of_Visible_Optical_Depth:value_3 = "A value of 3. corresponds to water cloud." ; StanDev_of_Visible_Optical_Depth:value_4 = "A value of 4. = supercooled liquid water cloud." ; float Ch_2_and_4_Temp_Diff(time, view, latitude, longitude) ; Ch_2_and_4_Temp_Diff:valid_range = -10.f, 20.f ; Ch_2_and_4_Temp_Diff:_FillValue = -888.f ; Ch_2_and_4_Temp_Diff:missing_value = -999.f ; Ch_2_and_4_Temp_Diff:long_name = "Ch. 2 and 4 Temperature Difference" ; Ch_2_and_4_Temp_Diff:units = "degrees K" ; Ch_2_and_4_Temp_Diff:value_1 = "A value of 1. corresponds to ice cloud." ; Ch_2_and_4_Temp_Diff:value_2 = "A value of 2. corresponds to water cloud." ; Ch_2_and_4_Temp_Diff:value_3 = "A value of 3. = supercooled liquid water cloud." ; float Ch_4_and_5_Temp_Diff(time, view, latitude, longitude) ; Ch_4_and_5_Temp_Diff:valid_range = -10.f, 20.f ; Ch_4_and_5_Temp_Diff:_FillValue = -888.f ; Ch_4_and_5_Temp_Diff:missing_value = -999.f ; Ch_4_and_5_Temp_Diff:long_name = "Ch. 4 and 5 Temperature Difference" ; Ch_4_and_5_Temp_Diff:units = "degrees K" ; Ch_4_and_5_Temp_Diff:value_1 = "A value of 1. corresponds to ice cloud." ; Ch_4_and_5_Temp_Diff:value_2 = "A value of 2. corresponds to water cloud." ; Ch_4_and_5_Temp_Diff:value_3 = "A value of 3. = supercooled liquid water cloud." ; float Cloud_Amount_from_LBTM(time, level, latitude, longitude) ; Cloud_Amount_from_LBTM:long_name = "cloud amount by level derived from LBTM" ; Cloud_Amount_from_LBTM:units = "percent cloudy" ; Cloud_Amount_from_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Amount_from_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Amount_from_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; Cloud_Amount_from_LBTM:value_4 = "A value of 4. corresponds to total cloud." ; float Clear_Counts(time, latitude, longitude) ; Clear_Counts:valid_range = 0.f, 255.f ; Clear_Counts:_FillValue = -888.f ; Clear_Counts:missing_value = -999.f ; Clear_Counts:long_name = "clear counts" ; Clear_Counts:units = "counts" ; float Cloud_Base_Pressure_LBTM(time, level, latitude, longitude) ; Cloud_Base_Pressure_LBTM:valid_range = 0.f, 1020.f ; Cloud_Base_Pressure_LBTM:_FillValue = -888.f ; Cloud_Base_Pressure_LBTM:missing_value = -999.f ; Cloud_Base_Pressure_LBTM:long_name = "cloud base pressure derived from LBTM" ; Cloud_Base_Pressure_LBTM:units = "mb" ; Cloud_Base_Pressure_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Base_Pressure_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Base_Pressure_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; Cloud_Base_Pressure_LBTM:value_4 = "A value of 4. corresponds to total cloud." ; float Emittance_LBTM(time, level, latitude, longitude) ; Emittance_LBTM:valid_range = 0.f, 100.f ; Emittance_LBTM:_FillValue = -888.f ; Emittance_LBTM:missing_value = -999.f ; Emittance_LBTM:long_name = "emittance derived from LBTM" ; Emittance_LBTM:units = "unitless" ; Emittance_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Emittance_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Emittance_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; Emittance_LBTM:value_4 = "A value of 4. corresponds to total cloud." ; float Cloud_Center_Pressure_LBTM(time, level, latitude, longitude) ; Cloud_Center_Pressure_LBTM:valid_range = 0.f, 1020.f ; Cloud_Center_Pressure_LBTM:_FillValue = -888.f ; Cloud_Center_Pressure_LBTM:missing_value = -999.f ; Cloud_Center_Pressure_LBTM:long_name = "cloud center pressure derived from LBTM" ; Cloud_Center_Pressure_LBTM:units = "mb" ; Cloud_Center_Pressure_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Center_Pressure_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Center_Pressure_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; Cloud_Center_Pressure_LBTM:value_4 = "A value of 4. corresponds to total cloud." ; float Cloud_Top_Pressure_LBTM(time, level, latitude, longitude) ; Cloud_Top_Pressure_LBTM:valid_range = 0.f, 1020.f ; Cloud_Top_Pressure_LBTM:_FillValue = -888.f ; Cloud_Top_Pressure_LBTM:missing_value = -999.f ; Cloud_Top_Pressure_LBTM:long_name = "cloud top pressure derived from LBTM" ; Cloud_Top_Pressure_LBTM:units = "mb" ; Cloud_Top_Pressure_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Top_Pressure_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Top_Pressure_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; Cloud_Top_Pressure_LBTM:value_4 = "A value of 4. corresponds to total cloud." ; float Cloud_Center_Temperature_LBTM(time, view, latitude, longitude) ; Cloud_Center_Temperature_LBTM:valid_range = 160.f, 330.f ; Cloud_Center_Temperature_LBTM:_FillValue = -888.f ; Cloud_Center_Temperature_LBTM:missing_value = -999.f ; Cloud_Center_Temperature_LBTM:long_name = "cloud center temperature derived from LBTM" ; Cloud_Center_Temperature_LBTM:units = "degrees K" ; Cloud_Center_Temperature_LBTM:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Center_Temperature_LBTM:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Center_Temperature_LBTM:value_3 = "A value of 3. corresponds to high cloud." ; float Cloud_Percentage_Level_Guess(time, view, latitude, longitude) ; Cloud_Percentage_Level_Guess:valid_range = 0.f, 100.f ; Cloud_Percentage_Level_Guess:_FillValue = -888.f ; Cloud_Percentage_Level_Guess:missing_value = -999.f ; Cloud_Percentage_Level_Guess:long_name = "estimation of level cloud percentage from VISST" ; Cloud_Percentage_Level_Guess:units = "percent" ; Cloud_Percentage_Level_Guess:value_1 = "A value of 1. corresponds to low cloud." ; Cloud_Percentage_Level_Guess:value_2 = "A value of 2. corresponds to mid cloud." ; Cloud_Percentage_Level_Guess:value_3 = "A value of 3. corresponds to high cloud." ; float Visible_Radiance(time, view, latitude, longitude) ; Visible_Radiance:valid_range = 0.f, 526.f ; Visible_Radiance:_FillValue = -888.f ; Visible_Radiance:missing_value = -999.f ; Visible_Radiance:long_name = "visible radiance" ; Visible_Radiance:units = "unitless" ; Visible_Radiance:value_1 = "A value of 1. corresponds to total." ; Visible_Radiance:value_2 = "A value of 2. corresponds to clear." ; Visible_Radiance:value_3 = "A value of 3. corresponds to cloud." ; float Ch4_Clear_Sky_Temp_Initial_Guess(time, latitude, longitude) ; Ch4_Clear_Sky_Temp_Initial_Guess:valid_range = 160.f, 330.f ; Ch4_Clear_Sky_Temp_Initial_Guess:_FillValue = -888.f ; Ch4_Clear_Sky_Temp_Initial_Guess:missing_value = -999.f ; Ch4_Clear_Sky_Temp_Initial_Guess:long_name = "Ch4 clear sky temperature -initial guess" ; Ch4_Clear_Sky_Temp_Initial_Guess:units = "degrees K" ; float No_Retrieval_Percentage(time, latitude, longitude) ; No_Retrieval_Percentage:valid_range = 0.f, 100.f ; No_Retrieval_Percentage:_FillValue = -888.f ; No_Retrieval_Percentage:missing_value = -999.f ; No_Retrieval_Percentage:long_name = "no retrieval pixel percent" ; No_Retrieval_Percentage:units = "percent" ; float lat ; lat:long_name = "Northernmost north latitude" ; lat:units = "degrees" ; float lon ; lon:long_name = "Westernmost west longitude" ; lon:units = "degrees" ; // global attributes: :title = "1.0 degree resolution gridded VISST cloud products derived from GOES-8 for PACS Region" ; :source = "NASA Langley Research Center" ; :version = "VISST PACS (beta)" ; :netCDF = "netCDF 3.4" ; :disclaimer = "Users take note: These are beta-level results and should be used with caution. They are made available primarily for program development and interface and for initial studies of the PACS area. Please check with Patrick Minnis (p.minnis@larc.nasa.gov) for any technical questions or before using these data in any publication. A revised version of the results will be made generally available after the processing algorithms are completely verified. A reference for these data is Ayers, J.K., P. Minnis, D.F. Young, W.L. Smith,Jr., and L. Nguyen, 2001: Development of a climatology of cloud properties over the southeastern Pacific for PACS. Proc. AMS 11th Conf. Satellite Meteorology and Oceanography, Madison, WI, October 15-18, No. P2.20." ; :visible_calibration = "The visible radiance was calculated according to R = a * D +b where R is the visible radiance, D is ten bit counts, a=1.335E-4*M+0.684,where M=number of days since Jan 1, 1995,and b=-a*30.6." ; :vis_cal_ref = " Minnis, P., L. Nguyen, D. F. Young, D. R. Doelling and W. F. Miller, 2001: Rapid calibration of Operational and research meteorological satellite imagers, Part I: Use of the TRMM VIRS or ERS-2 ATSR-2 as a reference. Submitted to J. Atmos. Oceanic Technol. " ; :infrared_calibration = "The nominal GOES-8 calibration was used for infrared." ; :shortwave_NB_BB_correlation = "The shortwave narrowband/broadband correlation is given by Ab = a + b * An + c * An * An + d * ln( 1 / uo ), where Ab is broadband albedo, An is narrowband albedo, uo is the cosine of the solar zenith angle, a = 0.0571, b = 0.7198, c = 0.0287, and d = 0.0523. These coefficients are unverified for this region and will be recomputed in the future." ; :shortwave_NB_BB_reference = "Doelling, D. R., Young, D. F., Arduini, R. F., Minnis, P., Harrison, E. F., and Suttles, J. T., 1990: On the Role of Satellite-measured Narrowband Radiances for Computing the Earth\'s Radiation Balance. Proc. Seventh Conference on Atmospheric Radiation, San Francisco, CA, July, 155-160. " ; :longwave_NB_BB_correlation = "The longwave narrowband/broadband correlation is given by Mb = a + b * Mn + c * Mn * Mn + d * Mn * ln( h ), where Mb is broadband flux, Mn is narrowband flux, h is the average relative humidity, in percent, above the GOES level, a = 77.2, b = 5.554, c = -.0171, and d = -.237. These coefficients are unverified for this region and will be recomputed in the future." ; :longwave_NB_BB_reference = "Minnis, P., Young, D. F., and Harrison, E. F., 1991: Examination of the Relationship between Outgoing Infrared Window and Total Longwave Fluxes Using Satellite Data. J. Climate, 4, 1114-1133." ;