LISIRD supplied Composite Lyman Alpha

This data product contains daily irradiance levels (photons/s/cm**2) of solar Lyman alpha (121.5 nm) radiation from multiple spacecraft and modelling sources, including AE-E/ESUM, SME/SUVM, UARS/SOLSTICE, TIMED/SEE and SORCE/SOLSTICE spacecraft and F10.7 and Mg models. Data are available from 1947 to near-current, both graphically and, in txt/csv format, digitally, from the LISIRD interface at U.Colorado/LASP.

Data and Resources

Additional Info

Field	Value
Maintainer	NASA Space Physics Data Facility
Last Updated	November 5, 2026, 13:20 (UTC)
Created	August 10, 2026, 19:07 (UTC)
Identifier	/SDE/SPASE_JSON/\|spase://NASA/NumericalData/LASP/LISIRD/Composite/Lyman.Alpha/P1D
Modified	2026-11-02T22:16:01Z
Theme	{Heliophysics}
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	0250111b-6613-446f-b621-ff1c2ac06ed5
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
license	https://www.usa.gov/government-works
programCode	{026:000}
publisher	LISIRD
resource-type	Dataset
source_datajson_identifier	true
source_hash	4ffdf5721b5bbfc66395da4366e61b9ef2e775cf4c2606d36ceca11271c41fe1
source_schema_version	1.1