Documentation

Products

Description

The output products are constructed as "UNITs", so-called because each one contains the extractions from a unique source. Thus, the following ones are available :

Unit Product Description
CS-TRACK-UNIT-
CAL-IIR-L1
extractions of the CALIPSO's Infrared Imager level 1 radiances
CS-TRACK-UNIT-
CAL-LID-L1
CALIPSO's LIDAR level 1 Backscatter profiles
CS-TRACK-UNIT-
CAL-LID-L2-VFM
CALIPSO level 2 Vertical Feature Mask
CS-TRACK-UNIT-
CLOUDSAT-1B-CPR
CLOUDSAT level 1 received echoes power
CS-TRACK-UNIT-
CLOUDSAT-2B-CLDCLASS
CLOUDSAT level 2 cloud classification
CS-TRACK-UNIT-
CLOUDSAT-2B-GEOPROF
CLOUDSAT level 2 cloud mask and radar reflectivities
CS-TRACK-UNIT-
CLOUDSAT-2B-TAU
CLOUDSAT level 2 cloud optical depth
CS-TRACK-UNIT-
CLOUDSAT-ECMWF-AUX
ancillary meteo data from CLOUDSAT ECMWF-AUX
CS-TRACK-UNIT-
CLOUDSAT-MODIS-AUX
MODIS radiances from CLOUDSAT MODIS-AUX
These extractions are :

  • colocated with the CLOUDSAT footprints ( ~1.1 km ). Variables with a smaller resolutiion, like the 333m CALIOP backscatter profiles, are averaged,
  • for profiles, given at a vertical resolution of 60m between [ -1.92 km , 40.02 km ]. Profiles with a coarser resolution are interpolated

Naming convention

CS-TRACK-UNIT-<Target>_<Timestamp>_<Granule>.hdf

<Target> The unit target product among CAL-IIR-L1, CAL-LID-L1, CAL-LID-L2-VFM, CLOUDSAT-1B-CPR, CLOUDSAT-2B-CLDCLASS, CLOUDSAT-2B-GEOPROF, CLOUDSAT-2B-TAU, CLOUDSAT-ECMWF-AUX, CLOUDSAT-MODIS-AUX
<Version> A 3 digits dot separated version number as X.X.X
<Timestamp> The timestamp of the orbit, using the CLOUDSAT format YYYYJJJHHMMSS, Year, Julian day, hour, minute, second of the first data contained in the file (UTC)
<Granule> The granule number, on 5 digits

Examples

Unit Product Download
CAL-IIR-L1 CS-TRACK-UNIT-CAL-IIR-L1_v0.2.3_2009001021530_14253.hdf
CAL-LID-L1 CS-TRACK-UNIT-CAL-LID-L1_v0.2.3_2009001021530_14253.hdf
CAL-LID-L2-VFM CS-TRACK-UNIT-CAL-LID-L1_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-1B-CPR CS-TRACK-UNIT-CLOUDSAT-1B-CPR_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-2B-CLDCLASS CS-TRACK-UNIT-CLOUDSAT-2B-CLDCLASS_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-2B-GEOPROF CS-TRACK-UNIT-CLOUDSAT-2B-GEOPROF_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-2B-TAU CS-TRACK-UNIT-CLOUDSAT-2B-TAU_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-ECMWF-AUX CS-TRACK-UNIT-CLOUDSAT-ECMWF-AUX_v0.2.3_2009001021530_14253.hdf
CLOUDSAT-MODIS-AUX CS-TRACK-UNIT-CLOUDSAT-MODIS-AUX_v0.2.3_2009001021530_14253.hdf

Variables

Description

Name Description Unit Type Fill
CLOUDSAT_Latitude Spacecraft Latitude degrees float32
CLOUDSAT_Longitude Spacecraft Longitude degrees float32
CLOUDSAT_TAI_Time Time of the CLOUDSAT footprint in the TAI93 convention secs float64
CS_TRACK_Height Altitude of the bins for CS_TRACK profiles km float32
CS-TRACK-UNIT-CAL-IIR-L1
CALIPSO_IIR_Pixel_Index Index of the nearest IIR pixel None int32 -9999
CALIPSO_IIR_Latitude None degrees float32 -9999.0
CALIPSO_IIR_Longitude None degrees float32 -9999.0
CALIPSO_IIR_Channel_Wavelength Wavelength of the CALIPSO IIR Channels µm float32
CALIPSO_IIR_Calibrated_Radiances_8.65 None Watts per square meter per steradian per micron int16 -9999
CALIPSO_IIR_Viewing_Zenith_Angle_8.65 None degrees int16 -9999
CALIPSO_IIR_Viewing_Azimuth_Angle_8.65 None degrees int16 -9999
CALIPSO_IIR_Calibrated_Radiances_10.6 None Watts per square meter per steradian per micron int16 -9999
CALIPSO_IIR_Viewing_Zenith_Angle_10.6 None degrees int16 -9999
CALIPSO_IIR_Viewing_Azimuth_Angle_10.6 None degrees int16 -9999
CALIPSO_IIR_Calibrated_Radiances_12.05 None Watts per square meter per steradian per micron int16 -9999
CALIPSO_IIR_Viewing_Zenith_Angle_12.05 None degrees int16 -9999
CALIPSO_IIR_Viewing_Azimuth_Angle_12.05 None degrees int16 -9999
CS-TRACK-UNIT-CAL-LID-L1
CALIOP_Latitude None degrees float32 -9999.0
CALIOP_Longitude None degrees float32 -9999.0
CLOUDSAT_CALIOP_Colocation_Distance Distance between the CLOUDSAT footprint and the CALIOP LIDAR shot km float32 -9999.0
CALIOP_TAI_Time Time of the first and last CALIOP LIDAR profiles averaged in the RADAR footprint (TAI93 time convention) seconds...TAI float64 -inf
CALIOP_IGBP_Surface_Type None None int8 -9
CALIOP_NSIDC_Surface_Type None None uint8 255
CALIOP_Day_Night_Flag None None int8 -1
CALIOP_Land_Water_Mask None None int8 -9
CALIOP_Lidar_Wavelength Wavelength of the CALIPSO Lidars nm float32
CALIOP_Lidar_Telescope_Field_Of_View Field of view of the CALIPSO Polarized Lidar microrad float32
CALIOP_Lidar_Beam_Divergence Divergence of the CALIPSO Lidar Beam float32
CALIPSO_Spacecraft_Altitude None kilometers float32 -9999.0
CALIPSO_DEM_Elevation None kilometers float32 -9999.0
CALIPSO_Tropopause_Height None km float32 -inf
CALIOP_Pixel_Index Index of the nearest CALIOP profile None int32 -9999
CALIOP_Height Altitude of the native CALIOP bins km float32
CALIOP_Noise_Scale_Factor_532_Perpendicular None square root of counts float32 -inf
CALIOP_Noise_Scale_Factor_532_Parallel None square root of counts float32 -inf
CALIOP_Noise_Scale_Factor_1064 None square root of counts float32 -inf
CALIOP_Attenuated_Backscatter_1064 None per kilometer per steradian float32 -9999.0
CALIOP_Calibration_Constant_532 None cubic kilometers * steradians * counts float32 -inf
CALIOP_Calibration_Constant_Uncertainty_532 None cubic kilometers * steradians * counts float32 -inf
CALIOP_Calibration_Constant_1064 None cubic kilometers * steradians * counts float32 -inf
CALIOP_Calibration_Constant_Uncertainty_1064 None cubic kilometers * steradians * counts float32 -inf
CALIOP_Total_Attenuated_Backscatter_532_Native_Height None per kilometer per steradian float32 -9999.0
CALIOP_Total_Attenuated_Backscatter_532 None per kilometer per steradian float32 -9999.0
CALIOP_Perpendicular_Attenuated_Backscatter_532_Native_Height None per kilometer per steradian float32 -9999.0
CALIOP_Perpendicular_Attenuated_Backscatter_532 None per kilometer per steradian float32 -9999.0
CALIOP_Parallel_Attenuated_Backscatter_532_Native_Height None per kilometer per steradian float32 -9999.0
CALIOP_Parallel_Attenuated_Backscatter_532 None per kilometer per steradian float32 -9999.0
CALIOP_Total_Backscatter_532_Random_Error Random Measurement Error of the Background Backscatter Signal at 532nm (Liu et al. 2006) .m-1.sr-1 float32 -9999.0
CS-TRACK-UNIT-CAL-LID-L2-VFM
CALIOP_VFM_Height Altitude of the bins in CALIOP VFM profiles km float32
CALIOP_L2_VFM_Feature_Classification_Flags None None uint16 65535
CS-TRACK-UNIT-CLOUDSAT-1B-CPR
CLOUDSAT_1B_CPR_Range_to_first_bin Range to First Bin meters float32 -9999.0
CLOUDSAT_1B_CPR_RayStatus_PRI Pulse Repetition Interval 1.6 microsec uint8 0
CLOUDSAT_1B_CPR_RayStatus_pulsesTx Number of Transmitted Pulses -- int16 0
CLOUDSAT_1B_CPR_RayStatus_pulseWidth Pulse Width microsec uint8 0
CLOUDSAT_1B_CPR_Sigma-Zero Sigma-Zero dB*100 int16 -9999
CLOUDSAT_Random_Measurement_Error Computed RADAR Random Measurement Error None float32 -9999.0
CS-TRACK-UNIT-CLOUDSAT-2B-CLDCLASS
CLOUDSAT_2B_CLDCLASS_cloud_scenario Cloud scenario none int16 -32768
CLOUDSAT_2B_CLDCLASS_radar_precipitation Radar precipitation flag (bit 13/14) of the cloud scenario None uint8 255
CS-TRACK-UNIT-CLOUDSAT-2B-GEOPROF
CLOUDSAT_UTC_Time Time of the CLOUDSAT footprint in the UTC convention secs float32
CLOUDSAT_Spacecraft_Altitude Altitude of CLOUDSAT above reference surface (~mean sea level) km float32
CLOUDSAT_SurfaceHeightBin Location of Surface Bin as determined by ... The value here is shifted (as Height). None int8 -1
CLOUDSAT_Vertical_Binsize None m float32 -9999.0
CLOUDSAT_DEM_Elevation Digital Elevation Map meters int16 9999
CLOUDSAT_Radar_Frequency Frequency of the CLOUDSAT Radar GHz float32
CLOUDSAT_Height Height of range bin in Reflectivity/Clou ... ve reference surface (~ mean sea level). m int16 -9999
CLOUDSAT_2B_GEOPROF_Radar_Reflectivity Radar Reflectivity Factor dBZe int16 -8888
CLOUDSAT_2B_GEOPROF_CPR_Cloud_Mask CPR Cloud Mask None int8 -9
CLOUDSAT_2B_GEOPROF_CPR_Gaseous_Attenuation Gaseous_Attenuation dBZe int16 -9999
CS-TRACK-UNIT-CLOUDSAT-2B-TAU
CLOUDSAT_2B_TAU_total_optical_depth Column cloud optical depth - int16 -9900
CLOUDSAT_2B_TAU_total_optical_depth_uncert Uncertainty in total optical depth - int16 -9900
CLOUDSAT_2B_TAU_mean_effective_radius mean cloud effective radius micron int16 -9900
CLOUDSAT_2B_TAU_mean_effective_radius_uncert Cloud effevtive radius uncertainty micron int16 -9900
CS-TRACK-UNIT-CLOUDSAT-ECMWF-AUX
CLOUDSAT_ECMWF_AUX_EC_height None m int16
CLOUDSAT_ECMWF_AUX_Pressure None Pa float32 -999.0
CLOUDSAT_ECMWF_AUX_Temperature None K float32 -999.0
CLOUDSAT_ECMWF_AUX_Specific_humidity None kg kg**-1 float32 -999.0
CLOUDSAT_ECMWF_AUX_Ozone None kg kg**-1 float32 -999.0
CLOUDSAT_ECMWF_AUX_Skin_temperature None K float32 -999.0
CLOUDSAT_ECMWF_AUX_Surface_pressure None Pa float32 -999.0
CLOUDSAT_ECMWF_AUX_Temperature_2m None K float32 -999.0
CS-TRACK-UNIT-CLOUDSAT-MODIS-AUX
CLOUDSAT_MODIS_AUX_Solar_zenith None None int16 -32767
CLOUDSAT_MODIS_AUX_Solar_azimuth None None int16 -32767
CLOUDSAT_MODIS_AUX_Sensor_zenith None None int16 -32767
CLOUDSAT_MODIS_AUX_Sensor_azimuth None None int16 -32767
MODIS_Band_1KM_RefSB MODIS 1km Reflective Solar Band Numbers none float32
MODIS_Band_1KM_RefSB_Wavelength MODIS 1km Reflective Solar Band Central Wavelength microns float32
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB None None uint16 32768
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_ref_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_ref_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_rad_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_rad_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_scaling_factor None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_spec_uncert None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_RefSB_Uncert_Indexes None None uint8 255
MODIS_Band_1KM_Emissive MODIS 1km Emissive Band Numbers none float32
MODIS_Band_1KM_Emissive_Wavelength MODIS 1km Emissive Band Central Wavelength microns float32
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive None None uint16 32768
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive_rad_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive_rad_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive_scaling_factor None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive_spec_uncert None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_1KM_Emissive_Uncert_Indexes None None uint8 255
MODIS_Band_250_RefSB MODIS 250m Band Numbers none float32
MODIS_Band_250_RefSB_Wavelength MODIS 250m Band Central Wavelength microns float32
CLOUDSAT_MODIS_AUX_EV_250_RefSB None None uint16 32768
CLOUDSAT_MODIS_AUX_EV_250_RefSB_ref_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_ref_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_rad_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_rad_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_scaling_factor None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_spec_uncert None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_250_RefSB_Uncert_Indexes None None uint8 255
MODIS_Band_500_RefSB MODIS 500m Band Numbers none float32
MODIS_Band_500_RefSB_Wavelength MODIS 500m Band Central Wavelength microns float32
CLOUDSAT_MODIS_AUX_EV_500_RefSB None None uint16 32768
CLOUDSAT_MODIS_AUX_EV_500_RefSB_ref_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_ref_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_rad_offsets None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_rad_scales None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_scaling_factor None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_spec_uncert None None float32 -999.0
CLOUDSAT_MODIS_AUX_EV_500_RefSB_Uncert_Indexes None None uint8 255

HDF Calibration

When the HDF calibration is used, the same scaling factors and equations than in the source product are kept. Please refers to the official input product documentation for details about it.

Nevertheless, when a non standard scaling equation is used, this will be specified in a SDS attribute called "scaling_equation".