Skip to main content
U.S. flag

An official website of the United States government

SORCE SOLSTICE Level 3 MgII Core-to-Wing Ratio As-Measured Cadence V018 (SOR3SOLS_MGII_018) at GES DISC

Published by NASA/GSFC/SED/ESD/TISL/GESDISC;UCO/LASP/SORCE | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 01:31 PM | Dataset Last Updated: June 23, 2026
The SORCE SOLSTICE Level 3 MgII Core to Wing Ratio As-Measured Cadence product consists of all measurements of the magnesium II core-to-wing index from the SOLSTICE instrument. The SOLSTICE instrument makes measurements during each daytime orbit portion, 15 orbits per day. A complete solar spectrum is made in about 30 minutes, a quick scan mode in about 5 minutes. The spectral resolution of SOLSTICE is 0.1 nm, allowing the Mg-II doublet to be fully resolved and modeled with Gaussians. The Mg-II core-to-wing ratio is used as a measurement of solar activity. The Mg-II data are arranged in a single file in a tabular ASCII text file which can be easily read into a spreadsheet application. The columns contain the date (calendar and Julian Day), the core/wing ratio, and the absolute uncertainty. The rows are arranged with one daily average measurment, repeating for each day for the length of the measurement period.

Resources

10 resources available

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
description The SORCE SOLSTICE Level 3 MgII Core to Wing Ratio As-Measured Cadence product consists of all measurements of the magnesium II core-to-wing index from the SOLSTICE instrument. The SOLSTICE instrument makes measurements during each daytime orbit portion, 15 orbits per day. A complete solar spectrum is made in about 30 minutes, a quick scan mode in about 5 minutes. The spectral resolution of SOLSTICE is 0.1 nm, allowing the Mg-II doublet to be fully resolved and modeled with Gaussians. The Mg-II core-to-wing ratio is used as a measurement of solar activity. The Mg-II data are arranged in a single file in a tabular ASCII text file which can be easily read into a spreadsheet application. The columns contain the date (calendar and Julian Day), the core/wing ratio, and the absolute uncertainty. The rows are arranged with one daily average measurment, repeating for each day for the length of the measurement period.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Original Metadata",
    "format": "ISO",
    "mediaType": "text/xml",
    "conformsTo": "http://www.isotc211.org/2005/gmi",
    "description": "The metadata's original source.",
    "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C1993479669-GES_DISC.iso19115"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "http://lasp.colorado.edu/data/sorce/file_readers/read_lasp_ascii_file.pro"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "http://lasp.colorado.edu/home/sorce/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "http://lasp.colorado.edu/home/sorce/instruments/solstice/solstice-data-product-release-notes/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "http://lasp.colorado.edu/home/sorce/reference/publications/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/data/SORCE_Level3/SOR3SOLS_MGII.018/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "HTML",
    "mediaType": "text/html",
    "downloadURL": "https://disc.gsfc.nasa.gov/datacollection/SOR3SOLS_MGII_018.html"
  },
  {
    "@type": "dcat:Distribution",
    "format": "PDF",
    "mediaType": "application/pdf",
    "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/ATBD/ATBD-SOR-01.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "format": "PNG",
    "mediaType": "image/png",
    "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SOR3SOLS_MGII_018.png"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C1993479669-GES_DISC"
  }
]
identifier 10.5067/L64GCHMXAHPM
keyword 
[
  "earth-science-solar-activity-sun-earth-interactions-solar-irradiance"
]
license https://www.usa.gov/government-works
modified 2026-06-23
programCode 
[
  "026:000"
]
publisher 
{
  "name": "NASA/GSFC/SED/ESD/TISL/GESDISC;UCO/LASP/SORCE",
  "@type": "org:Organization"
}
temporal 2003-03-05/2020-02-24
theme 
[
  "Earth Science"
]
title SORCE SOLSTICE Level 3 MgII Core-to-Wing Ratio As-Measured Cadence V018 (SOR3SOLS_MGII_018) at GES DISC

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov