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TIMED SEE Level 3A Solar Irradiance Data

Published by SEE_POC, CDAWeb | National Aeronautics and Space Administration | Catalog Last Checked: August 19, 2026 at 12:24 AM | Dataset Last Updated: August 17, 2026
SEE Level 3A data files contain each measurements averaged solar irradiance spectrum in 1 nm intervals extracted from the EGS Level 2A and XPS Level 2A data products. Shortward of 27 nm, a solar model is scaled to match the XPS broadband data. SEE Level 3A data files also contain 38 emission lines extracted from EGS Level 2A spectra, and the XPS Level 2A diode irradiances. For normal operations, SEE observes the Sun for about 3 minutes every orbit (97 minutes), which usually gives 14-15 measurements per day. The SEE Level 3A data are time averaged over each measurement, after applying corrections for atmospheric absorption, degradation, flare removal, and to 1-AU.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "NASA Space Physics Data Facility",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"
}
description SEE Level 3A data files contain each measurements averaged solar irradiance spectrum in 1 nm intervals extracted from the EGS Level 2A and XPS Level 2A data products. Shortward of 27 nm, a solar model is scaled to match the XPS broadband data. SEE Level 3A data files also contain 38 emission lines extracted from EGS Level 2A spectra, and the XPS Level 2A diode irradiances. For normal operations, SEE observes the Sun for about 3 minutes every orbit (97 minutes), which usually gives 14-15 measurements per day. The SEE Level 3A data are time averaged over each measurement, after applying corrections for atmospheric absorption, degradation, flare removal, and to 1-AU.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/timed/see/data/level3a_cdf/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
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  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "http://lasp.colorado.edu/home/see/data/observational-averages/level-3a/"
  },
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    "@type": "dcat:Distribution",
    "format": "BIN",
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    "downloadURL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=TIMED_L3A_SEE&index=sp_phys"
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    "format": "BIN",
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    "downloadURL": "https://helio.data.nasa.gov/dataset/TIMED_SEE_L3A"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
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    "downloadURL": "https://hpde.io/NASA/NumericalData/TIMED/SEE/L3A"
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  }
]
identifier https://doi.org/10.48322/3x4k-mx60
keyword 
[
  "irradiance",
  "see",
  "sun",
  "timed"
]
landingPage https://doi.org/10.48322/3x4k-mx60
license https://www.usa.gov/government-works
modified 2026-08-17
programCode 
[
  "026:000"
]
publisher 
{
  "name": "SEE_POC, CDAWeb",
  "@type": "org:Organization"
}
theme 
[
  "Heliophysics"
]
title TIMED SEE Level 3A Solar Irradiance Data

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