This website uses cookies. By continuing to use this website you are agreeing to our use of cookies. 

Dataset

 

CALIPSO: Cloud and Aerosol Lidar Level 2 1km Cloud Layer Version 4-51 Product (CAL_LID_L2_01kmCLay-V4-51)

Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2025-07-31
Download Stats: last 12 months
Dataset Size: 161.83K Files | 7TB

Abstract

The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) was a joint-mission between NASA and the French space agency Centre National d'Etudes Spatiales. The main objectives of the mission was to supply unique data set of vertical cloud and aerosol profiles.

This dataset contains cloud and aerosol lidar level 2 1km cloud layer version 4-51 data product, which provides cloud data derived from Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) Level 1B product at 1 km horizontal resolution, with full complement of diagnostic and quality assurance parameters. The data provides range of parameters including vertical profile of cloud layers, optical depth.

CAL_LID_L2_01kmCLay-Standard-V4-51 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) Lidar Level 2 1 km Cloud Layer, Version 4-51 data product. Data for this product was collected using the CALIPSO Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument.

Within this layer product are two general classes of data: Column Properties (including position data and viewing geometry) and Layer Properties. The lidar layer products contain column descriptors associated with several layer descriptors. The column descriptors specify the temporal and geophysical location of the column of the atmosphere through which a given lidar pulse travels. Also included in the column descriptors are indicators of surface lighting conditions, information about the surface type, and the number of features (e.g., aerosol layers) identified within the column.

The CALIPSO satellite comprises three instruments: CALIOP, Imaging Infrared Radiometer (IIR), and Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency CNES (Centre National d'Etudes Spatiales).

CALIPSO was launched on April 28, 2006, to study the impact of clouds and aerosols on the Earth's radiation budget and climate. From June 13, 2006, to September 13, 2018, CALIPSO was part of the A-Train constellation for coincident Earth Observations. After September 13, 2018, the satellite was lowered from 705 to 688 km to resume flying in formation with CloudSat, called the C-Train.

Citable as:  National Aeronautics and Space Administration (2025): CALIPSO: Cloud and Aerosol Lidar Level 2 1km Cloud Layer Version 4-51 Product (CAL_LID_L2_01kmCLay-V4-51). NERC EDS Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/ff5c7123668044be9876d6e690517990

Abbreviation: Not defined
Keywords: NASA, CALIPSO, CALIOP, Cloud, Aerosol

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.
Use of these data is covered by the following licence(s):
https://eosweb.larc.nasa.gov/citing-asdc-data
When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

These data were obtained from the NASA Langley Research Center Atmospheric Science Data Center and mirrored by CEDA

File Format:
Data are HDF4 formatted

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Satellite
Abstract Deployed on Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Satellite.
Input Description None
Output Description None
Software Reference None
Output Description

None

  • var_id: Attenuated_Backscatter_Statistics_1064
  • units: 1/(km � sr)
  • var_id: Attenuated_Backscatter_Statistics_532
  • units: 1/(km � sr)
  • units: NoUnits
  • var_id: Attenuated_Scattering_Ratio_Statistics_532
  • units: NoUnits
  • var_id: Attenuated_Total_Color_Ratio_Statistics
  • units: NoUnits
  • var_id: CAD_Score
  • units: NoUnits
  • var_id: Column_IAB_Cumulative_Probability
  • var_id: Column_Integrated_Attenuated_Backscatter_532
  • units: 1/sr
  • units: NoUnits
  • var_id: Column_Particulate_Optical_Depth_Above_Opaque_Water_Cloud_532
  • units: NoUnits
  • var_id: Column_Particulate_Optical_Depth_Above_Opaque_Water_Cloud_Uncertainty_532
  • units: km
  • var_id: DEM_Surface_Elevation
  • var_id: Day_Night_Flag
  • units: NoUnits
  • units: NoUnits
  • var_id: Feature_Classification_Flags
  • units: NoUnits
  • var_id: IGBP_Surface_Type
  • units: NoUnits
  • var_id: Initial_CAD_Score
  • units: 1/sr
  • var_id: Integrated_Attenuated_Backscatter_1064
  • units: 1/sr
  • var_id: Integrated_Attenuated_Backscatter_532
  • units: 1/sr
  • var_id: Integrated_Attenuated_Backscatter_Uncertainty_1064
  • units: 1/sr
  • var_id: Integrated_Attenuated_Backscatter_Uncertainty_532
  • units: NoUnits
  • var_id: Integrated_Attenuated_Total_Color_Ratio
  • units: NoUnits
  • var_id: Integrated_Attenuated_Total_Color_Ratio_Uncertainty
  • units: NoUnits
  • var_id: Integrated_Volume_Depolarization_Ratio
  • units: NoUnits
  • var_id: Integrated_Volume_Depolarization_Ratio_Uncertainty
  • var_id: Latitude
  • units: �
  • units: km
  • var_id: Layer_Base_Altitude
  • units: hPa
  • var_id: Layer_Base_Pressure
  • var_id: Layer_Base_Temperature
  • units: �C
  • units: �C
  • var_id: Layer_Centroid_Temperature
  • units: NoUnits
  • var_id: Layer_IAB_QA_Factor
  • units: km
  • var_id: Layer_Top_Altitude
  • units: hPa
  • var_id: Layer_Top_Pressure
  • var_id: Layer_Top_Temperature
  • units: �C
  • var_id: Longitude
  • units: �
  • units: hPa
  • var_id: Midlayer_Pressure
  • var_id: Midlayer_Temperature
  • units: �C
  • units: J
  • var_id: Minimum_Laser_Energy_532
  • units: NoUnits
  • var_id: Number_Layers_Found
  • units: NoUnits
  • var_id: ODCOD_Effective_Optical_Depth_532
  • units: NoUnits
  • var_id: ODCOD_Effective_Optical_Depth_532_Uncertainty
  • units: NoUnits
  • var_id: ODCOD_QC_Flag_532
  • units: m/s
  • var_id: ODCOD_Surface_Wind_Speed_Correction
  • units: m/s
  • var_id: ODCOD_Surface_Wind_Speeds_10m
  • var_id: Off_Nadir_Angle
  • units: �
  • units: NoUnits
  • var_id: Opacity_Flag
  • units: 1/sr
  • var_id: Overlying_Integrated_Attenuated_Backscatter_532
  • units: NoUnits
  • var_id: Parallel_Column_Reflectance_532
  • units: NoUnits
  • var_id: Parallel_Column_Reflectance_Uncertainty_532
  • units: NoUnits
  • var_id: Perpendicular_Column_Reflectance_532
  • units: NoUnits
  • var_id: Perpendicular_Column_Reflectance_Uncertainty_532
  • units: NoUnits
  • var_id: Profile_ID
  • units: s
  • var_id: Profile_Time
  • var_id: Profile_UTC_Time
  • units: yymmdd.ffffffff
  • var_id: Scattering_Angle
  • units: �
  • units: NoUnits
  • var_id: Snow_Ice_Surface_Type
  • var_id: Solar_Azimuth_Angle
  • units: �
  • var_id: Solar_Zenith_Angle
  • units: �
  • units: km
  • var_id: Spacecraft_Position
  • units: NoUnits
  • var_id: Surface_1064_Integrated_Attenuated_Color_Ratio
  • units: NoUnits
  • var_id: Surface_1064_Integrated_Depolarization_Ratio
  • units: NoUnits
  • var_id: Surface_532_Integrated_Attenuated_Color_Ratio
  • units: NoUnits
  • var_id: Surface_532_Integrated_Depolarization_Ratio
  • units: km
  • var_id: Surface_Base_Altitude_1064
  • units: km
  • var_id: Surface_Base_Altitude_532
  • units: NoUnits
  • var_id: Surface_Detection_Confidence_1064
  • units: NoUnits
  • var_id: Surface_Detection_Confidence_532
  • units: NoUnits
  • var_id: Surface_Detection_Flags_1064
  • units: NoUnits
  • var_id: Surface_Detection_Flags_532
  • units: NoUnits
  • var_id: Surface_Detections_333m_1064
  • units: NoUnits
  • var_id: Surface_Detections_333m_532
  • units: 1/sr
  • var_id: Surface_Integrated_Attenuated_Backscatter_1064
  • units: 1/sr
  • var_id: Surface_Integrated_Attenuated_Backscatter_532
  • units: 1/sr
  • var_id: Surface_Overlying_Integrated_Attenuated_Backscatter_1064
  • units: 1/sr
  • var_id: Surface_Overlying_Integrated_Attenuated_Backscatter_532
  • units: 1/(km � sr)
  • var_id: Surface_Peak_Signal_1064
  • units: 1/(km � sr)
  • var_id: Surface_Peak_Signal_532
  • var_id: Surface_Scaled_RMS_Background_1064
  • units: 1/(km � sr)
  • units: 1/(km � sr)
  • var_id: Surface_Scaled_RMS_Background_532
  • units: km
  • var_id: Surface_Top_Altitude_1064
  • units: km
  • var_id: Surface_Top_Altitude_532
  • units: km
  • var_id: Tropopause_Height
  • var_id: Tropopause_Temperature
  • units: �C
  • units: NoUnits
  • var_id: Volume_Depolarization_Ratio_Statistics

Co-ordinate Variables

Coverage
Temporal Range
Start time:
2006-06-12T00:00:00
End time:
2023-06-30T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°