NESDIS Total Ozone from Analysis of Stratospheric and Tropospheric components (TOAST)

TOAST

browse graphicSample Global Total Ozone Analysis using SBUV/2 and CrIS
TOAST combines UV and IR ozone retrievals from an algorithm using the Solar Backscatter Ultraviolet Version 2 (SBUV/2) and the Cross-track Infrared Sounder (CrIS) instruments. This daily Total Ozone Analysis is an enhanced version of the previous TOAST product using SBUV/2 and the Advanced Tiros-N Operational Vertical Sounder (TOVS). The most significant improvement of the algorithm is in the IR-derived product replacement of the column amount retrievals from the High resolution InfraRed Sounder (HIRS) with the CrIS profile retrievals. This improvement allows the algorithm to provide global 1 degree x 1 degree total ozone amounts and profile maps at 12 Umkehr layers. The new products have significantly increased accuracy in tropospheric ozone estimation. The TOAST data archive contains UV, IR and blended products in direct access binary data format, and blended products in GRIB format. The direct access binary files have record length of 260640 bytes, which represent a 360x181 array of 4-byte floating point values for the two-dimensional global 1×1 degree gridded analysis. The first data value in a record is for the point centered at (0.5 deg East, 90 deg South). See metadata documentation for more information on the TOAST direct access binary format and grid. These operational products were produced by the NOAA/NESDIS Office of Satellite and Product Operations (OSPO). The enhanced TOAST products have been operational since 2014, however the archive period of record begins in 2016.
  • Cite this dataset when used as a source.
  • gov.noaa.class:TOAST
  • gov.noaa.ncdc:C00954
Order Data
Distribution Formats
  • Native Binary
  • GRIB
Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 828-271-4800
ncei.sat.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
+1 828-271-4800
ncei.sat.info@noaa.gov
Time Period 2016-03-29 to Present
Spatial Bounding Box Coordinates
N: 90.0
S: -90.0
E: 180.0
W: -180.0
Spatial Coverage Map
Dataset Information
General Documentation
Processing Documents
    Publication Dates
    • publication: 2014
    Data Presentation Form Digital image
    Dataset Progress Status Ongoing - data is continually being updated
    Data Update Frequency Daily
    Supplemental Information
    The TOAST product files provide two-dimensional (360x181) ozone information on a regular fixed global grid of latitude and longitude. The binary formats require ancillary latitude and longitude files for navigation. The latitude and longitude values are representative of grid cells centered at longitudes from Greenwich 0 degrees eastward to 359 deg, and latitudes from 90 deg South northward to 90 deg North, both with 1 degree spacing. That is, the value in a typical OZONE [I,J] element is for a 1x1 degree cell centered at longitude I-1 deg East, latitude J-91 deg North. For example, OZONE [201,151] is centered at Longitude 200 deg East (160 deg West), latitude 60 deg North. The two navigation files TOAST_lat_lon.txt and TOAST_lat_lon.bin provide the coordinates of the 181 latitude values in deg North followed by the 360 longitude values in deg East. The binary format for the IR TOAST and the Blended (UV+IR) TOAST products is a 4-byte floating point array with dimensions of 360x181. The UV TOAST binary format, however, is a 4-byte floating point array with dimensions of 360x181x13, where 13 is the UV sensor's total column ozone amount followed by ozone amounts at 12 Umkehr layers at atmospheric pressure levels 0.25, 0.5, 0.99, 1.98, 3.96, 7.93, 15.8, 31.7, 63.3, 127, 253, and 1013 hPa.
    Purpose This dataset provides quality measurements of ozone variables from multiple instruments and platforms.
    Use Limitations
    • For a complete description of use limitations for this dataset, refer to the producer's documentation.
    Dataset Citation
    • Cite this dataset when used as a source.
    Cited Authors
    • DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Originators
    • DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    Principal Investigators
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords Global Change Master Directory (GCMD) Science Keywords
    • Earth Science > Atmosphere > Air Quality > Tropospheric Ozone
    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/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Platform keywords Global Change Master Directory (GCMD) Platform Keywords
    • SUOMI-NPP > Suomi National Polar-orbiting Partnership
    • NOAA-19 > National Oceanic > Atmospheric Administration-19
    • METOP-A > Meteorological Operational Satellite - A
    • METOP-B > Meteorological Operational Satellite - B
    Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
    • SBUV/2 > Solar Backscatter Ultraviolet/2
    • IASI > Infrared Atmospheric Sounding Interferometer
    • CRIS-NPP > Cross-track Infrared Sounder
    • OMPS > Ozone Mapping and Profiler Suite
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Geographic Region > Global
    Project keywords Global Change Master Directory (GCMD) Project Keywords
    • JPSS > Joint Polar Satellite System
    Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    • 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
    Use Constraints
    • Cite this dataset when used as a source.
    • 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 data certifications, copies of analog materials, and data distribution on physical media.
    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: 2018-05-25
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