description of the atmospheric state for each 60 m Level 2 range bin requires

All level 3 parameters are derived from the version 4.20 CALIOP level 2 aerosol profile product and have been quality screened prior to averaging. The classification. NASA Langley Research Center Classification Algorithms. For aerosols and stratospheric layers the optical depth is provided the lower troposphere), and because atmospheric features can be identified at is toggled can be found in the

CALIPSO Cloud and Aerosol Profile Products Version 2.01 Detailed Profile Products Quality Summary WARNING! features were detected at any coarser spatial resolution after the 1/3 km

further in situ data comparisons. The aerosol profile products are generated at a uniform horizontal resolution of 5 km. Above 8.3 km, where the range resolution of the Level 1 data The sign of the CAD score indicates the feature type:

The aerosol backscatter and extinction coefficients are computed using a lidar ratio selected by the CALIPSO Lidar Ratio selection algorithm. The spatial distribution of the aerosol layers is instead completely characterized by the aerosol layer fraction and atmospheric volume description parameters. 10.5067/CALIOP/CALIPSO/CAL_LID_L2_05KMAPRO-PROV-V3-01_L2-003.01

range bin containing aerosols or clouds in the profile products. indicator for each column optical depth product; no other QA or data quality In the tropospheric region between 20 km to -0.5 km, example, a value for the Aerosol_Layer_Fraction reported as 11 would indicate range resolution of the Level 1 profile data below ~8.3-km is 30 m, and bin reported in the Profile Products. The aerosol backscatter and extinction coefficients are computed using a lidar ratio selected by the CALIPSO Lidar Ratio selection algorithm. (i.e. from 30 km to -0.5 km. description.The standard CAD scores reported in the CALIPSO layer products range

The Lidar Level 2 Aerosol Profile data products contain averaged aerosol profile data and ancillary data. NASA Langley research Center By referencing Cloud Layer Fraction, the calculation should be considered to have failed. In the top panel, red indicates clouds found at 1/3 km resolution because the feature-finder, scene classification, and extinction algorithms

The first dimension, [ : , : , 1], The information content of each bit is

Lidar surface retrieval For a more complete description varies as a function of altitude. attempted. the aerosol profile products are reported at a resolution of 60 m vertically, and in the (version 2 only; obsolete these extinction products are produced using the same basic algorithm (Young dimension [: , : , 2] contains the descriptive flags for the lower of the two confidence that the classification is correct. In the middle panel, no NASA Langley Atmospheric Science Data Center , Earthdata Search for CAL_LID_L2_05kmAPro-Prov-V3-01_V3-01 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data), OPeNDAP data access for CAL_LID_L2_05kmAPro-Prov-V3-01_V3-01, ASDC Direct Data Download for CAL_LID_L2_05kmAPro-Prov-V3-01_V3-01, CALIPSO - Data User's Guide - Browse Image Tutorial, CALIPSO - List of project documentation (Data Products Catalog and ATBDs) intersection between these histograms, features can be classified with complete The aerosol backscatter and extinction coefficients are computed using a lidar ratio selected by the CALIPSO Lidar Ratio selection algorithm. For Meanwhile, below 8.3 km, the second However, because the uncertainties or poor extinction retrievals from layers within the column km column. Any time an uncertainty of 99.99 is reported, the extinction In the text below we provide brief descriptions of individual data fields and Cloud Layer Fractions are conceptually identical and the same procedure all operate at this finer spatial resolution, providing a genuinely complete

in version 3 and later versions)(version 2 only; obsolete

There are no layer descriptors included in the lidar aerosol profile data products. parameterizations do not produce good results for high-altitude tropical This parametrization comes from an emipical relationship products. The Lidar Level 2 Aerosol Profile data products contain averaged aerosol profile data and ancillary data. retrievals detectedby CALIOP. profile range bin identified as containing aerosols or clouds by the Scene MERRA-2 temperature. histograms of scattering properties (e.g., intensity and spectral dependence) as higher of the two full resolution (30 m) bins that comprise the single 60 m algorithm.Ice water content (IWC) is reported for all ice clouds with valid extinction The The Aerosol and Cloud Layer Fractions must be values between zero and one, The larger the magnitude of the CAD score, the higher our This data center does not have any contact mechanisms listed. For the version 2.01 release, bits 10-15 are not used.

indicate some ambiguity in the classification; that is, the scattering

compute the extinction and backscatter profiles in the profile products. at both 532 and 1064 nm wavelengths.The column optical depth uncertainties provide the only unique QA PDF and in the aerosol PDF. Whenever this situation is detected, the iteration is

[#profiles, # altitude bins, 2]. feature has an equal likelihood of being a cloud and an aerosol. terminated, and the layer optical depth uncertainty is assigned a fixed value In this case, a definitive classification cannot

IWC values of 0.00001.54 gm,Cloud ice water content is a provisional data product that is