Topic: Status of GOES-16 Clear Sky Mask L2 Data

Date/Time Issued: February 27, 2018 1735 UTC

Product(s) or Data Impacted: GOES-16 Clear Sky Mask L2 Data

Date/Time of Initial Impact: February 18, 2018 at 2215 UTC

Date/Time of Expected End: M-BN/A

Length of Event: M-BN/A


Details/Specifics of Change: The GOES-R Peer/Stakeholder Product Validation Review (PS-PVR) for the Advanced Baseline Imager (ABI) L2+ Clear Sky Mask (CSM), also known as the Binary Cloud Mask (BCM), Provisional Maturity was held on February 16, 2018. As a result of this review, the PS-PVR panel recommended that the ABI BCM be declared Provisional.

The GOES-16 ABI BCM generates the cloud mask used by many of the ABI L2 Products. The BCM consists of the binary cloud mask, a 4-level mask and the results of individual tests. Only the binary cloud mask is made available to external users. In Mode 3 operations, the BCM is required to be generated every 15 minutes for ABI Full Disk (FD) of the Earth, every 5 minutes over the Continental United States (CONUS) region, and every 5 minute over the Mesoscale (MESO) regions, according the GOES-R Mission Requirements Document. However, operationally, the Mask is produced for every Mesoscale image due to downstream requirements.

A full description and format of the BCM products can be found in the Product Definition and UserM-bM-^@M-^Ys Guide (PUG) document ( The algorithm used to derive the BCM from GOES-16 ABI observations is described in detail in the M-bM-^@M-^\GOES-R Advanced Baseline Imager (ABI) Algorithm Theoretical Basis Document for ABI Cloud MaskM-bM-^@M-^] (


The ABI L2+ BCM Beta, Provisional and Full Validation Readiness, Implementation and Management Plan (RIMP) defines Provisional maturity as:

Persons desiring to use the GOES-16 ABI Provisional maturity BCM products for any reason, including but not limited to scientific and technical investigations, are encouraged to consult the NOAA/NESDIS/STAR Algorithm Working Group (AWG) scientists for feasibility of the planned applications. The BCM product is sensitive to upstream processing that includes the quality of the calibration, navigation, terminator regions and dynamic ancillary data, such as the snow mask.

Status of the current BCM products and any remaining known issues that are being resolved:

Contact for further information: OSPO User Services at

Contacts for specific information on the ABI L2 BCM product:

Wayne MacKenzie

Andrew Heidinger

Jaime Daniels