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    • NOAA Climate Data Record of Microwave Sounding Unit (MSU) Mean Atmospheric Layer Temperature, Version 1.2 (Version Superseded)

    Metadata Updated: November 2, 2023

    Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version. The dataset contains three MSU channel-based, monthly gridded atmospheric layer temperature Climate Data Records generated by merging nine NOAA polar orbiting satellites, TRIOS-N and NOAA-6 through NOAA-14. These are temperatures of middle-troposphere (TMT), upper-troposphere (TUT, also known as temperature troposphere stratosphere), and lower-stratosphere (TLS), corresponding to measurements from MSU channels 2, 3, and 4, respectively. These products have global coverage with a 2.5 latitudes by 2.5 longitude grid resolution. Time period is from November 1978 through September 2006. Adjustments of observations included limb-adjustment, diurnal drift corrections, warm target temperature effect, and residual inter-satellite bias removal.

    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 19, 2023
    Metadata Created Date October 28, 2022
    Metadata Updated Date November 2, 2023
    Reference Date(s) March 5, 2009 (publication), June 11, 2014 (revision)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    Merged Monthly Deep Layer Temperature

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 19, 2023
    Metadata Created Date October 28, 2022
    Metadata Updated Date November 2, 2023
    Reference Date(s) March 5, 2009 (publication), June 11, 2014 (revision)
    Responsible Party DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce (Resource Provider)
    Contact Email
    Guid gov.noaa.ncdc:C00757
    Access Constraints Cite as: Cheng-Zhi Zou, Wenhui Wang, Jian Li, and NOAA CDR Program (2014). NOAA Climate Data Record of MSU Mean Layer Temperatures, Version 1.2. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5RB72J1 [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 180.0
    Bbox North Lat 90.0
    Bbox South Lat -90.0
    Bbox West Long -180.0
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Merged Monthly Deep Layer Temperature
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/C00757.PNG
    Graphic Preview Type PNG
    Harvest Object Id 01737991-bae4-4b89-8639-714c319e88b8
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence *Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.*, The temperatures as defined by the datasets are mean layer temperatures which are not suitable for temperature trend determination at specific atmospheric levels. Satellite retrievals must be conducted to obtain level temperatures.
    Lineage The Microwave Sounding Units (MSU) on board the NOAA Polar Orbiting Satellite series (POES) have been the primary instruments for measuring upper-air temperature profiles under all weather conditions, excluding precipitation, during 1978-2007. MSU was a microwave Dicke radiometer with four-channels to make passive measurements in the 5.5 millimeter oxygen region. The radiance measured by each frequency channel comes from a different layer of the atmosphere, depending on the strength of the absorption at that frequency. The percentage contribution of individual levels within the layer to the measured layer temperature is represented by a vertical weighting function, which is typically bell-shaped, peaking at a certain level in the height coordinate. Among these, MSU channel 1 (50.3 GHz) measured surface temperature, while channels 2, 3 and 4 measured temperatures of the middle-troposphere (TMT), upper-troposphere (TUT), and lower-stratosphere (TLS) with their weighting functions peaking respectively near 550, 250, and 100 hPa. By merging MSU observations from different satellites, long-term temperature time series are obtained for these layers for climate trend monitoring and investigation. Due to stability, continuity, global coverage, and insensitive to clouds, these time series are broadly used as an indicator of global warming.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1978-11
    Temporal Extent End 2006-09

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