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    • NOAA GOES-R Series Advanced Baseline Imager (ABI) Level 2 Derived Stability Indices (DSI)

    Metadata Updated: November 2, 2023

    The GOES-R Advanced Baseline Imager (ABI) Derived Stability Indices product contains images for five stability indices with pixel values that are indicators of atmospheric instability associated with convection and potential thunderstorm activity. 1) Convective(ly) Available Potential Energy (CAPE): A measure of atmospheric stability calculated by integrating the positive temperature difference between the surrounding atmosphere and a parcel of air lifted adiabatically from the surface to its equilibrium level. It exists under conditions of potential instability, and measures the potential energy per unit mass that would be released by the unstable parcel if it were able to convect upwards to equilibrium. Units of measure are joules per kilogram. 2) Lifted Index: The temperature difference between a parcel of air lifted adiabatically from the surface to a finishing air pressure of 500 hPa in the troposphere and the ambient air temperature at the finishing air pressure in the troposphere. The air parcel is "lifted" by moving the air parcel from the surface to the Lifting Condensation Level (dry adiabatically) and then from the Lifting Condensation Level to the finishing air pressure (wet adiabatically). Units of measure are kelvin. 3) K-Index: A measure of atmospheric stability indicating the potential of severe convection. The index is the difference in air temperature between 850 and 500 hPa, the dew point temperature at 850 hPa, and the difference between the air temperature and the dew point temperature at 700 hPa. Units of measure are kelvin. 4) Showalter Index: A measure of atmospheric stability indicating the convective and thunderstorm potential. The index is the temperature difference between a parcel of air lifted from 850 to 500 hPa (wet adiabatically) and the ambient air temperature at 500 hPa. Units of measure are kelvin. 5) Total Totals Index: A measure of atmospheric stability indicating the likelihood of severe convection. The index is derived from the difference in air temperature between 850 and 500 hPa (the vertical totals) and the difference between the dew point temperature at 850 hPa and the air temperature at 500 hPa (the cross totals). The index is the sum of the vertical and cross totals. Units of measure are kelvin. The product includes three types of data quality information. One describes the overall quality of the data pixels, providing an assessment of the derived stability indices data values for on-earth pixels. The second provides information about the quality of the physical retrieval for on-earth pixels, identifying failure conditions. The third provides information about the quality of the first guess skin temperature for onearth pixels, identifying temperature threshold failure conditions for on-earth pixels. The Derived Stability Indices product images are produced on the ABI fixed grid at 10 km resolution for Full Disk, CONUS, and Mesoscale coverage regions from GOES East and West. Product data is produced under the following conditions: Clear sky; Geolocated source data to local zenith angles of 80 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 September 18, 2023
    Metadata Created Date February 3, 2023
    Metadata Updated Date November 2, 2023
    Reference Date(s) February 22, 2018 (publication)
    Frequency Of Update continual

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    Examples of a number of the atmospheric stability products as generated by the GOES-R Temperature, Moisture, and Atmospheric Stability algorithm using simulated GOES-R data on 04 June 2005 22:00 UTC. Stability indices shown include Lifted Index (upper left), CAPE (upper right), Totals Total (lower left) and K-Index (lower right).

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 18, 2023
    Metadata Created Date February 3, 2023
    Metadata Updated Date November 2, 2023
    Reference Date(s) February 22, 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:C01516
    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 Derived Stability Indices. [indicate subset used]. NOAA National Centers for Environmental information. doi:10.7289/V50Z71KF. [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 Examples of a number of the atmospheric stability products as generated by the GOES-R Temperature, Moisture, and Atmospheric Stability algorithm using simulated GOES-R data on 04 June 2005 22:00 UTC. Stability indices shown include Lifted Index (upper left), CAPE (upper right), Totals Total (lower left) and K-Index (lower right).
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/C01516.jpg
    Graphic Preview Type JPEG
    Harvest Object Id 866ab8bc-59cc-4b4a-aceb-20d31d069dd5
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence For a complete description of use limitations for this dataset, refer to the Algorithm Theoretical Basis Document (ATBD).
    Lineage 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).
    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 2017-05-16

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