NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2.0 (Version Superseded)
Total Solar Irradiance
30 years of the 133+ year record of daily-averaged Total Solar Irradiance (TSI) produced for this Climate Data Record (CDR) (dark green) and its comparison to contemporary TSI measurements by the NASA SORCE mission.
*Note: This dataset version has been superseded by a newer version.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.* This Climate Data Record (CDR) contains total solar irradiance (TSI) as a function of time created with the Naval Research Laboratory model for spectral and total irradiance (version 2). Total solar irradiance is the total, spectrally integrated energy input to the top of the Earth's atmosphere, at a standard distance of one Astronomical Unit from the Sun. Its units are W per m2. The dataset was created by Judith Lean (Space Science Division, Naval Research Laboratory), Odele Coddington and Peter Pilewskie (Laboratory for Atmospheric and Space Science, University of Colorado). The daily- and monthly-averaged TSI data range from 1882 to the present, and annual-averaged TSI data begin in 1610. The data file format is netCDF-4 following CF metadata conventions. The dataset is accompanied by algorithm documentation, data flow diagram and source code for the NOAA CDR Program.
- Cite as: Odele Coddington, Judith L. Lean, Doug Lindholm, Peter Pilewskie, Martin Snow, and NOAA CDR Program (2015): NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V55B00C1 [access date].
Distribution Formats |
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Ordering Instructions |
Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov
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Dataset Point of Contact |
NOAA Climate Data Record Program Office DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 (828) 271-4800 cdr_program.ncdc@noaa.gov
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Dataset Point of Contact |
Coddington, Odele UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado +1 (303) 492-9318 odele.coddington@lasp.colorado.edu
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Time Period |
1882-01-01 to 2017-12-01 |
Spatial Bounding Box Coordinates |
West: -180.0
East: 180.0
South: -90.0
North: 90.0
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Spatial Coverage Map |
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General Documentation |
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Processing Documents |
- CDR Source Code
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CDR Source Code (download)
This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
- CDR Data Flow Diagram
- Climate Algorithm Theoretical Basis Document
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Associated Resources |
- NCEI Dataset Landing Page for the Current Version
- Data Stewardship Maturity Report for NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2
- Data Stewardship Maturity Report for NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2
- NOAA Climate Data Record (CDR) of Solar Spectral Irradiance (SSI), NRLSSI Version 2
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Publication Dates |
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Edition |
Version 2.0 |
Data Presentation Form |
Digital table - digital representation of facts or figures systematically displayed, especially in columns
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Dataset Progress Status |
Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility Superseded - replaced by new |
Data Update Frequency |
Not planned |
Purpose |
The purpose of this Climate Data Record is to provide a continuous and long-term record of total solar irradiance (TSI) for scientists and modelers in the solar, atmospheric and chemistry sciences as well as the energy industry. |
Use Limitations |
- *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.*
- For a complete description of use limiataions see the Algorithm Theoretical Basis Document.
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Dataset Citation |
- Cite as: Odele Coddington, Judith L. Lean, Doug Lindholm, Peter Pilewskie, Martin Snow, and NOAA CDR Program (2015): NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V55B00C1 [access date].
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Cited Authors |
- Coddington, Odele
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- Lean, Judith L.
DOD/USNAVY/NRL/SSD > Space Science Division, Naval Research Laboratory, U.S. Navy, U.S. Department of Defense
- Lindholm, Doug
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- Pilewskie, Peter
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- Snow, Martin
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- NOAA CDR Program
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Principal Investigators |
- Lean, Judith L.
DOD/USNAVY/NRL/SSD > Space Science Division, Naval Research Laboratory, U.S. Navy, U.S. Department of Defense
- Pilewskie, Peter
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
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Collaborators |
- Coddington, Odele
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- Lindholm, Doug
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- Snow, Martin
UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
- NOAA CDR Program
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Publishers |
- NOAA National Centers for Environmental Information
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Theme keywords |
Global Change Master Directory (GCMD) Science Keywords- Earth Science > Sun-Earth Interactions > Solar Activity > Solar Irradiance
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Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
- UCO/LASP > Laboratory for Atmospheric and Space Physics, University of Colorado
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Platform keywords |
Global Change Master Directory (GCMD) Platform Keywords- SORCE > Solar Radiation and Climate Experiment
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Place keywords |
Global Change Master Directory (GCMD) Location Keywords- Geographic Region > Global
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Project keywords |
Global Change Master Directory (GCMD) Project Keywords
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Use Constraints |
- Cite as: Odele Coddington, Judith L. Lean, Doug Lindholm, Peter Pilewskie, Martin Snow, and NOAA CDR Program (2015): NOAA Climate Data Record (CDR) of Total Solar Irradiance (TSI), NRLTSI Version 2. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V55B00C1 [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.
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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.
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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.
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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.
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Last Modified: 2023-09-18
For questions about the information on this page, please email:
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