Dataset Overview | National Centers for Environmental Information (NCEI)

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

ABI-L2-ACM

Example of the Clear Sky Mask product (white areas in image), as generated by the GOES-R Clear Sky Mask algorithm

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.

Dataset Citation

Cite as: GOES-R Algorithm Working Group and GOES-R Series Program (2018): NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Clear Sky Mask. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5SF2TGP. [access date].

Dataset Identifiers

doi:10.7289/V5SF2TGP
ABI-L2-ACM
gov.noaa.ncdc:C01503
gov.noaa.class:GRABIPRD

ISO 19115-2 Metadata

gov.noaa.ncdc:C01503

Full Text · XML

Download Data	GOES-16 AWS S3 Explorer (Region: us-east-1) (download) Browse view to explore the S3 bucket for GOES-16 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACM. GOES-17 AWS S3 Explorer (Region: us-east-1) (download) Browse view to explore the S3 bucket for GOES-17 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACM. GOES-18 AWS S3 Explorer (Region: us-east-1) (download) Browse view to explore the S3 bucket for GOES-18 datasets. Data relevant to this can be found in folders with the prefix ABI-L2-ACM. GOES-16 Google Cloud Bucket Explorer (Region: US-multiple) (download) Browse view to explore the Google Cloud bucket for GOES-16. Data relevant to this can be found in folders with the prefix ABI-L2-ACM. GOES-17 Google Cloud Bucket Explorer (Region: US-multiple) (download) Browse view to explore the Google Cloud bucket for GOES-17. Data relevant to this can be found in folders with the prefix ABI-L2-ACM. GOES-18 Google Cloud Bucket Explorer (Region: US-multiple) (download) Browse view to explore the Google Cloud bucket for GOES-18. Data relevant to this can be found in folders with the prefix ABI-L2-ACM.
Order Data	NCEI Archive Information Request System (order) Search the data archive and submit an order for the dataset via the interface. NOAA CLASS Data Search and Order (order) Search the data archive and submit an order for the dataset via the interface.
Distribution Formats	NetCDF (Version: 4)
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information ncei.info@noaa.gov
Dataset Point of Contact	Customer Engagement Branch DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ncei.sat.info@noaa.gov

Time Period	2017-04-19 to Present (time interval: 10-minute)
Spatial Reference System	urn:ogc:def:crs:EPSG::4326
Spatial Bounding Box Coordinates	West: -156.2995 East: 6.2995 South: -81.3282 North: 81.3282 West: 141.7005 East: -55.7005 South: -81.3282 North: 81.3282
Spatial Coverage Map

General Documentation	NCEI Dataset Landing Page Landing page for the dataset. NCEI GOES-R Terrestrial Weather (ABI/GLM) Description of the products and related resources. Product Definition and Users' Guide (PUG) Vol.1 Main The Product Definition and User's Guide (PUG) document provides product descriptions and formats for all data and products produced and made available to users by the Geostationary Operational Environmental Satellite R Series (GOES-R) Core Ground Segment (GS). Product Definition and Users' Guide (PUG) Vol.5 Level 2+ Products The Product Definition and User's Guide (PUG) document provides product descriptions and formats for all data and products produced and made available to users by the Geostationary Operational Environmental Satellite R Series (GOES-R) Core Ground Segment (GS). Registry of Open Data on AWS Information on AWS data access. Google Cloud Landing Page (Region: US-multiple) Information on Google Cloud data access for GOES datasets.
Processing Documents	GOES-R Algorithm Working Group GOES-R Algorithm Working Group The GOES-R Algorithm Working Group creates the algorithms that process the quality controlled satellite instrument data and produces resulting data products. NOAA Satellite Information System Product Quality NOAA Satellite Information System Product Quality Peer/Stakeholder Product Validation Reviews by satellite and product. GOES-R Algorithm Theoretical Basis Documents GOES-R Algorithm Theoretical Basis Documents Descriptions of how the algorithms work, their underlying designs, and initial comparison with prior algorithms and results.
Associated Resources	GOES-R Program Document Library GOES-R Program Document Library Webpage with product algorithm, users guides, and education and outreach materials. GOES Operational Status - NOAA Office of Satellite and Product Operations GOES Operational Status - NOAA Office of Satellite and Product Operations GOES spacecraft status page.

Publication Dates	publication: 2018-02-16
Edition	Provisional
Data Presentation Form	Digital image
Dataset Progress Status	Ongoing - data is continually being updated
Data Update Frequency	Continual
Purpose	The Clear Sky Mask product can be used by the NWP community to identify which ABI pixel information should be assimilated for use in numerical weather prediction models.
Use Limitations	For a complete description of use limitations for this baseline product, see the Algorithm Theoretical Basis Document (ATBD).

Dataset Citation	Cite as: GOES-R Algorithm Working Group and GOES-R Series Program (2018): NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Clear Sky Mask. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5SF2TGP. [access date].
Cited Authors	GOES-R Algorithm Working Group GOES-R Series Program
Principal Investigators	GOES-R Algorithm Working Group
Resource Providers	GOES-R Series Program
Publishers	NOAA National Centers for Environmental Information

Theme keywords	Global Change Master Directory (GCMD) Science Keywords Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Frequency Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Fraction Global Climate Observing System (GCOS) Essential Climate Variables (ECVs) Atmospheric - Upper-air - Cloud Properties
Data Center keywords	Global Change Master Directory (GCMD) Data Center Keywords 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
Platform keywords	Global Change Master Directory (GCMD) Platform Keywords GOES-16 > Geostationary Operational Environmental Satellite 16 GOES-17 > Geostationary Operational Environmental Satellite 17 GOES-18 > Geostationary Operational Environmental Satellite 18
Instrument keywords	Global Change Master Directory (GCMD) Instrument Keywords ABI > Advanced Baseline Imager
Place keywords	Global Change Master Directory (GCMD) Location Keywords 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
Project keywords	Global Change Master Directory (GCMD) Project Keywords GOES > Geostationary Operational Environmental Satellites ABI-L2-ACM gov.noaa.ncdc:C01503 gov.noaa.class:GRABIPRD GRABIPRD
Data Resolution keywords	Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords 1 km - < 10 km or approximately .01 degree - < .09 degree 500 meters - < 1 km Global Change Master Directory (GCMD) Temporal Data Resolution Keywords 1 minute - < 1 hour 1 second - < 1 minute
Stratum keywords	Global Change Master Directory (GCMD) Location Keywords Vertical Location > Troposphere

Use Constraints

Cite as: GOES-R Algorithm Working Group and GOES-R Series Program (2018): NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Clear Sky Mask. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5SF2TGP. [access date].

Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.

Access Constraints

Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.

Fees

In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.

Lineage information for: dataset
Lineage Statement	These data were produced by the NOAA Office of Satellite and Product Operations (OSPO) and are archived at the NOAA National Centers for Environmental Information (NCEI).
Processor	DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps	The Clear Sky Mask product is generated by the GOES-R ABI Cloud Mask ground processing algorithm. The Cloud Mask algorithm is an important component of the GOES-R Level 2+ Algorithm Precedence Network, as the output of the algorithm is used in the generation of the GOES-R Cloud, Aerosol, Sounding, Land, Ocean, Radiation, and Wind products. The Clear Sky Mask product algorithm identifies clear, probably clear, cloudy, and probably cloudy conditions based on spectral, spatial, and temporal tests. The algorithm compares ABI emissive band data with processed clear sky and cloudy sky model data derived from the Community Radiative Transfer Model (CRTM). 2017-04-19T15:00:00Z - The GOES-16 ABI Clear Sky Mask algorithm reached beta maturity. 2018-02-16T00:00:00 - The GOES-16 ABI Clear Sky Mask algorithm reached provisional maturity. The GOES-16 ABI Clear Sky Mask algorithm reached full validation maturity. 2018-08-27T00:00:00 - The GOES-17 ABI Clear Sky Mask algorithm reached beta maturity. 2019-05-06T00:00:00 - The GOES-17 ABI Clear Sky Mask algorithm reached provisional maturity. The GOES-17 ABI Clear Sky Mask algorithm reached full validation maturity.
Processing Documents	GOES-R Algorithm Working Group GOES-R Algorithm Working Group The GOES-R Algorithm Working Group creates the algorithms that process the quality controlled satellite instrument data and produces resulting data products. NOAA Satellite Information System Product Quality NOAA Satellite Information System Product Quality Peer/Stakeholder Product Validation Reviews by satellite and product. GOES-R Algorithm Theoretical Basis Documents GOES-R Algorithm Theoretical Basis Documents Descriptions of how the algorithms work, their underlying designs, and initial comparison with prior algorithms and results.
Source Datasets	NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 1b Radiances NCEI landing page for ABI-L1B-RAD Source dataset landing page with general information and access links for that dataset. Description of Source: Level 1b radiances Temporal extent used: 2017-02-28 to Present Spatial extent used: N:81.3282 S:-81.3282 E:6.2995 W:-156.2995

Lineage information for: repository
Processing Steps	2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.

Lineage information for: repository

Processing Steps

2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.

Last Modified: 2023-09-18
For questions about the information on this page, please email: ncei.info@noaa.gov

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

ABI-L2-ACM

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