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NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Clear Sky Mask (ACM)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2018-02-16T00:00:00.000+00:00
The Clear Sky Mask product contains an image in the form of a binary cloud mask that identifies pixels within a coverage region as clear or cloudy. The production of the clear sky mask is an important step in the processing of many other Advanced Baseline Imager (ABI) Level 2+ products that use the information generated in the production of the clear sky mask to determine the presence of a cloud. The product includes data quality information for the binary cloud mask data values for on-earth pixels. The binary cloud mask value is a dimensionless quantity. The Clear Sky Mask product image is provided at 2 km resolution on the ABI fixed grid for Full Disk, CONUS, and Mesoscale coverage regions from GOES East and West. Product data is produced for geolocated source data to local zenith angles of 90 degrees for both daytime and nighttime conditions.

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Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Frequency Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Fraction Atmospheric - Upper-air - Cloud Properties Geographic Region > Equatorial Geographic Region > Mid-Latitude Geographic Region > Northern Hemisphere Geographic Region > Southern Hemisphere Geographic Region > Tropics Geographic Region > Western Hemisphere Continent > North America > United States Of America Continent > North America > Central America Continent > South America Ocean > Atlantic Ocean Ocean > Pacific Ocean Vertical Location > Troposphere GOES > Geostationary Operational Environmental Satellites ABI > Advanced Baseline Imager GOES-16 > Geostationary Operational Environmental Satellite 16 GOES-17 > Geostationary Operational Environmental Satellite 17 GOES-18 > Geostationary Operational Environmental Satellite 18 GOES-19 > Geostationary Operational Environmental Satellite 19 1 km - < 10 km or approximately .01 degree - < .09 degree 500 meters - < 1 km 1 minute - < 1 hour 1 second - < 1 minute DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce ABI-L2-ACM gov.noaa.ncdc:C01503 gov.noaa.class:GRABIPRD GRABIPRD GRABIPRD ABIL2PROD ABIL2PACMI, ABIL2PACMR, ABIL2PACMT

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