netcdf sgpgoes7minnisX1.c1.941115.003000 { dimensions: latitude = 20 ; longitude = 28 ; level = 4 ; view = 2 ; time = UNLIMITED ; // (23 currently) variables: int base_time ; base_time:string = "0:00:00 GMT 15 November 1994 " ; base_time:long_name = "base time in epoch" ; base_time:units = "seconds since 0:00:00 GMT 01 January 1970" ; 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 level(level) ; level:valid_range = 1.f, 4.f ; level:long_name = "cloud level" ; level:units = "unitless" ; level:value_1 = "A value of 1. corresponds to low clouds." ; level:value_2 = "A value of 2. corresponds to mid clouds." ; level:value_3 = "A value of 3. corresponds to high clouds." ; level:value_4 = "A value of 4. corresponds to all clouds." ; float view(view) ; view:valid_range = 1.f, 2.f ; view:long_name = "scene description" ; view:units = "unitless" ; view:value_1 = "A value of 1. corresponds to a clear scene." ; view:value_2 = "A value of 2. corresponds to the total scene." ; 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" ; 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" ; float IR_Optical_Depth(time, level, latitude, longitude) ; IR_Optical_Depth:valid_range = 0.f, 100.f ; IR_Optical_Depth:_FillValue = -888.f ; IR_Optical_Depth:missing_value = -999.f ; IR_Optical_Depth:long_name = "IR cloud optical depth" ; IR_Optical_Depth:units = "unitless" ; float Emissivity(time, level, latitude, longitude) ; Emissivity:valid_range = 0.f, 1.f ; Emissivity:_FillValue = -888.f ; Emissivity:missing_value = -999.f ; Emissivity:long_name = "IR beam cloud emissivity" ; Emissivity:units = "unitless" ; 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" ; float Cloud_Top_Height(time, level, latitude, longitude) ; Cloud_Top_Height:valid_range = 0.f, 20.f ; Cloud_Top_Height:_FillValue = -888.f ; Cloud_Top_Height:missing_value = -999.f ; Cloud_Top_Height:long_name = "cloud top height" ; Cloud_Top_Height:units = "kilometers" ; float Cloud_Temperature(time, level, 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 = "uncorrected cloud temperature" ; Cloud_Temperature:units = "Kelvin" ; float Cloud_Thickness(time, level, latitude, longitude) ; Cloud_Thickness:valid_range = 0.f, 20.f ; Cloud_Thickness:_FillValue = -888.f ; Cloud_Thickness:missing_value = -999.f ; Cloud_Thickness:long_name = "cloud thickness estimate" ; Cloud_Thickness:units = "kilometers" ; float Reflectance(time, level, latitude, longitude) ; Reflectance:valid_range = 0.f, 1.5f ; Reflectance:_FillValue = -888.f ; Reflectance:missing_value = -999.f ; Reflectance:long_name = "cloud narrowband reflectance at TOA" ; Reflectance:units = "unitless" ; float Albedo(time, level, latitude, longitude) ; Albedo:valid_range = 0.f, 1.f ; Albedo:_FillValue = -888.f ; Albedo:missing_value = -999.f ; Albedo:long_name = "cloud narrowband albedo" ; Albedo:units = "unitless" ; float Cloud_Center_Temperature(time, level, latitude, longitude) ; Cloud_Center_Temperature:valid_range = 160.f, 330.f ; Cloud_Center_Temperature:_FillValue = -888.f ; Cloud_Center_Temperature:missing_value = -999.f ; Cloud_Center_Temperature:long_name = "cloud center temperature" ; Cloud_Center_Temperature:units = "Kelvin" ; float Cloud_Top_Temperature(time, level, latitude, longitude) ; Cloud_Top_Temperature:valid_range = 160.f, 330.f ; Cloud_Top_Temperature:_FillValue = -888.f ; Cloud_Top_Temperature:missing_value = -999.f ; Cloud_Top_Temperature:long_name = "cloud top temperature" ; Cloud_Top_Temperature:units = "Kelvin" ; float Visible_Optical_Depth_SD(time, level, latitude, longitude) ; Visible_Optical_Depth_SD:valid_range = 0.f, 100.f ; Visible_Optical_Depth_SD:_FillValue = -888.f ; Visible_Optical_Depth_SD:missing_value = -999.f ; Visible_Optical_Depth_SD:long_name = "visible optical depth standard deviation" ; Visible_Optical_Depth_SD:units = "unitless" ; float Cloud_Center_Temperature_SD(time, level, latitude, longitude) ; Cloud_Center_Temperature_SD:valid_range = 0.f, 200.f ; Cloud_Center_Temperature_SD:_FillValue = -888.f ; Cloud_Center_Temperature_SD:missing_value = -999.f ; Cloud_Center_Temperature_SD:long_name = "cloud center temperature standard deviation" ; Cloud_Center_Temperature_SD:units = "Kelvin" ; float Broadband_LW_Flux(time, view, latitude, longitude) ; Broadband_LW_Flux:valid_range = 0.f, 400.f ; Broadband_LW_Flux:_FillValue = -888.f ; Broadband_LW_Flux:missing_value = -999.f ; Broadband_LW_Flux:long_name = "broadband LW flux for clear and total scene" ; Broadband_LW_Flux:units = "watts per square meter" ; float Narrowband_IR_Flux(time, view, latitude, longitude) ; Narrowband_IR_Flux:valid_range = 0.f, 100.f ; Narrowband_IR_Flux:_FillValue = -888.f ; Narrowband_IR_Flux:missing_value = -999.f ; Narrowband_IR_Flux:long_name = "narrowband IR flux for clear and total scene" ; Narrowband_IR_Flux:units = "watts per square meter" ; float Broadband_SW_Albedo(time, view, latitude, longitude) ; Broadband_SW_Albedo:valid_range = 0.f, 1.f ; Broadband_SW_Albedo:_FillValue = -888.f ; Broadband_SW_Albedo:missing_value = -999.f ; Broadband_SW_Albedo:long_name = "broadband SW albedo for clear and total scene" ; Broadband_SW_Albedo:units = "unitless" ; float Narrowband_VIS_Albedo(time, view, latitude, longitude) ; Narrowband_VIS_Albedo:valid_range = 0.f, 1.f ; Narrowband_VIS_Albedo:_FillValue = -888.f ; Narrowband_VIS_Albedo:missing_value = -999.f ; Narrowband_VIS_Albedo:long_name = "narrowband VIS albedo for clear and total scene" ; Narrowband_VIS_Albedo:units = "unitless" ; float Clear_Temperature(time, latitude, longitude) ; Clear_Temperature:valid_range = 160.f, 330.f ; Clear_Temperature:_FillValue = -888.f ; Clear_Temperature:missing_value = -999.f ; Clear_Temperature:long_name = "clear IR temperature" ; Clear_Temperature:units = "Kelvin" ; float Clear_Temperature_SD(time, latitude, longitude) ; Clear_Temperature_SD:valid_range = 0.f, 200.f ; Clear_Temperature_SD:_FillValue = -888.f ; Clear_Temperature_SD:missing_value = -999.f ; Clear_Temperature_SD:long_name = "clear IR temperature standard deviation" ; Clear_Temperature_SD:units = "Kelvin" ; float Narrowband_VIS_Albedo_SD(time, latitude, longitude) ; Narrowband_VIS_Albedo_SD:valid_range = 0.f, 1.f ; Narrowband_VIS_Albedo_SD:_FillValue = -888.f ; Narrowband_VIS_Albedo_SD:missing_value = -999.f ; Narrowband_VIS_Albedo_SD:long_name = "clear narrowband VIS albedo standard deviation" ; Narrowband_VIS_Albedo_SD:units = "unitless" ; float Clear_VIS_Reflectance(time, latitude, longitude) ; Clear_VIS_Reflectance:valid_range = 0.f, 1.f ; Clear_VIS_Reflectance:_FillValue = -888.f ; Clear_VIS_Reflectance:missing_value = -999.f ; Clear_VIS_Reflectance:long_name = "clear narrowband VIS reflectance" ; Clear_VIS_Reflectance:units = "unitless" ; float Average_Total_Temperature(time, latitude, longitude) ; Average_Total_Temperature:valid_range = 160.f, 330.f ; Average_Total_Temperature:_FillValue = -888.f ; Average_Total_Temperature:missing_value = -999.f ; Average_Total_Temperature:long_name = "total scene average temperature" ; Average_Total_Temperature:units = "Kelvin" ; float Solar_Zenith_Angle(time, latitude, longitude) ; Solar_Zenith_Angle:valid_range = 0.f, 90.f ; Solar_Zenith_Angle:_FillValue = -888.f ; Solar_Zenith_Angle:missing_value = -999.f ; Solar_Zenith_Angle:long_name = "solar zenith angle" ; Solar_Zenith_Angle:units = "degrees" ; float Viewing_Zenith_Angle(time, latitude, longitude) ; Viewing_Zenith_Angle:valid_range = 0.f, 90.f ; Viewing_Zenith_Angle:_FillValue = -888.f ; Viewing_Zenith_Angle:missing_value = -999.f ; Viewing_Zenith_Angle:long_name = "viewing zenith angle" ; Viewing_Zenith_Angle:units = "degrees" ; float Relative_Azimuth_Angle(time, latitude, longitude) ; Relative_Azimuth_Angle:valid_range = 0.f, 180.f ; Relative_Azimuth_Angle:_FillValue = -888.f ; Relative_Azimuth_Angle:missing_value = -999.f ; Relative_Azimuth_Angle:long_name = "relative azimuth angle" ; Relative_Azimuth_Angle:units = "degrees" ; float alt ; alt:long_name = "Dummy altitude for Zeb" ; alt:units = "unitless" ; float lat ; lat:long_name = "Northernmost north latitude for Zeb" ; lat:units = "degrees" ; float lon ; lon:long_name = "Westernmost west longitude for Zeb" ; lon:units = "degrees" ; // global attributes: :title = "0.5 degree LBTM cloud products derived from GOES for ARM Great Plains" ; :source = "NASA Langley Research Center" ; :version = "LBTM ARM 1.0.0" ; :netCDF = "netCDF 2.3.2" ; :reference = "Minnis, P., Heck, P. W., and Young, D. F., 1993: Inference of Cirrus Cloud Properties Using Satellite-observed Visible and Infrared Radiances. Part II: Verification of Theoretical Cirrus Radiative Properties. J. Atmos. Sci., 50, 1305-1322." ; :visible_calibration = "The visible radiance was calculated according to R = a * D * D + b, where R is the visible radiance, D is eight bit counts, a = 0.0127, and b=-.28. " ; :infrared_calibration = "The nominal GOES calibration was used for infrared." ; :shortwave_NB/BB_correlation = "The shortwave narrowband/broadband correlation is given by Ab = Abclr * ( 1 - X ) + Abcld * X, with Abclr = a + b * Anclr + c * ln( 1 / uo ) and Abcld = d + e * Ancld + f * Ancld * Ancld + g * ln( 1 / uo ), where Ab is broadband albedo, Abclr is clear sky broadband albedo, Abcld is cloudy sky broadband albedo, X is cloudy sky scene fraction, Anclr is clear sky narrowband albedo, Ancld is cloudy sky narrowband albedo, uo is the cosine of the solar zenith angle, a = 0.1218, b = 0.3842, c = 0.0605, d = 0.0615, e = 0.9959, f = -.3488, and g = 0.0444." ; :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 = 63.6, b = 6.628, c = -.0278, and d = -.332." ; :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." ; }