Short Name:

CALIPSO Lidar Level 2 Vertical Feature Mask (VFM), V3-40

CAL_LID_L2_VFM_Exp-Prov-V3-40 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) Lidar Level 2 Vertical Feature Mask (VFM), Version 3-40 data product. Data for this product was collected using the CALIPSO Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument. Data collection for this product is ongoing. This data product describes the vertical and horizontal distribution of cloud and aerosol layers observed by the CALIPSO lidar. Cloud and aerosol discrimination for detected features is reported as a single value, the cloud-aerosol discrimination score (CAD_Score). Version 3.40 of the Level 2 data products is a maintenance release implementing the following changes: corrections were made to the code used to interpolate the Global Modeling and Assimilation Office (GMAO) meteorological data products to the CALIPSO orbit tracks; revisions, downward by ~0.8%, were made to the Cabannes backscattering cross-sections used to derive the molecular scattering models used for the Level 1 and Level 2 analyses; addressed a typographical error in the runtime script that controls the behavior of the aerosol subtyping algorithm in the Level 2 analyses. CALIPSO was launched on April 28, 2006 to study the impact of clouds and aerosols on the Earth's radiation budget and climate. It flies in the international A-Train constellation for coincident Earth observations. 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.

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