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    • NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Volcanic Ash: Detection and Height (VAA)

    Metadata Updated: September 19, 2023

    The Volcanic Ash: Detection and Height product contains two images with pixel values identifying volcanic ash cloud height and volcanic ash mass loading. The ash cloud top height is the geopotential height of the ash cloud top. The ash mass loading in the mass of volcanic ash per unit of area. The product includes two types of data quality information. One type of data quality indicator describes the quality of the volcanic ash detection, providing an assessment of the presence of volcanic ash for on-earth pixels including an indication of good or degraded quality, or invalid pixels, and the confidence in the detection of volcanic ash existing in single and multiple layers. The second type of data quality indicator provides information about the quality and ash characteristics of the retrieval for on-earth pixels, identifying failure conditions, cloud top temperature, cloud emissivity, and absorbed optical depth ratio retrieval quality, and the volcanic ash particle size. The units of measure for the ash cloud top height value is meters. The units of measure for the ash mass loading value is metric tons (tonnes) per square kilometer. The Volcanic Ash: Detection and Height product images are produced on the ABI fixed grid at 2 km resolution for the Full Disk coverage region. Product data is produced for geolocated source data to local zenith angles of 90 degrees for both daytime and nighttime conditions.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date July 12, 2023
    Metadata Created Date October 28, 2022
    Metadata Updated Date September 19, 2023
    Reference Date(s) June 15, 2018 (publication)
    Frequency Of Update continual

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    Ash Detection product (left), as indicated by white contour (i.e., all pixels within contour deemed to contain volcanic ash) overlaid on false color Meteosat-9/SEVIRI image as generated by the GOES-R Volcanic Ash algorithm. The associated ash loading retrievals are also shown (right).

    Additional Metadata

    Resource Type Dataset
    Metadata Date July 12, 2023
    Metadata Created Date October 28, 2022
    Metadata Updated Date September 19, 2023
    Reference Date(s) June 15, 2018 (publication)
    Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
    Contact Email
    Guid gov.noaa.ncdc:C01512
    Access Constraints Cite as: GOES-R Algorithm Working Group and GOES-R Series Program, (2018): NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Volcanic Ash: Detection and Height (VAA). [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.25921/nrnm-cm63 [access date]., 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., 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.
    Bbox East Long 6.2995
    Bbox North Lat 81.3282
    Bbox South Lat -81.3282
    Bbox West Long -156.2995
    Coupled Resource
    Frequency Of Update continual
    Graphic Preview Description Ash Detection product (left), as indicated by white contour (i.e., all pixels within contour deemed to contain volcanic ash) overlaid on false color Meteosat-9/SEVIRI image as generated by the GOES-R Volcanic Ash algorithm. The associated ash loading retrievals are also shown (right).
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/C01512.jpg
    Graphic Preview Type JPEG
    Harvest Object Id 4752b4fa-2b6d-4484-8ecd-dffbbf9b4b65
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence For a complete list of limitations of this dataset, see the Algorithm Theoretical Basis Document (ATBD).
    Lineage The 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).
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-156.2995, -81.3282], [6.2995, -81.3282], [6.2995, 81.3282], [-156.2995, 81.3282], [-156.2995, -81.3282]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2017-09-13

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