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Data Access

SOHO/MDI Line Of Sight (LOS) Magnetic Field Data

Stanford University (USA); Lockheed Martin Solar and Astrophysics Laboratory (USA) (1996). SOHO/MDI Line Of Sight (LOS) Magnetic Field Data [Data set]. Stanford University. https://doi.org/10.48322/22dk-a715 .

Note: Proper references, including those in BibTex or other formats , should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/SOHO/MDI/LOS_MagneticField/Level_1/PT96M

Description

Line of sight magnetic field inferred from the frequency/wavelength Zeeman splitting between opposite circular polarizations of a magnetically-sensitive line.

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Details

Version:2.7.1

MetadataRightsList

Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/SOHO/MDI/LOS_MagneticField/Level_1/PT96M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
SOHO/MDI Line Of Sight (LOS) Magnetic Field Data
DOI
https://doi.org/10.48322/22dk-a715
ReleaseDate
2026-07-21 12:07:16Z
RevisionHistory
RevisionEvent
ReleaseDate
2024-08-11 00:08:45Z
Note
Metadata created by SY
RevisionEvent
ReleaseDate
2024-09-05 00:08:46Z
Note
Added DOI by SY
RevisionEvent
ReleaseDate
2025-07-25 00:08:46Z
Note
Added HelioViewerID to Extension
RevisionEvent
ReleaseDate
2025-09-18 12:17:45Z
Note
Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:31:30Z
Note
Added MetadataRightsList. Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:28:06Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
RevisionEvent
ReleaseDate
2026-07-21 12:07:16Z
Note
Added HelioData InformationURL. JWL
Description

Line of sight magnetic field inferred from the frequency/wavelength Zeeman splitting between opposite circular polarizations of a magnetically-sensitive line.

PublicationInfo
Authors
Stanford University (USA); Lockheed Martin Solar and Astrophysics Laboratory (USA)
PublicationDate
1996-03-19 00:00:00Z
PublishedBy
Stanford University
Contacts
Role Person StartDate StopDate Note
1. Scientist spase://SMWG/Person/Rick.Bogart
2. PrincipalInvestigator spase://SMWG/Person/Philip.H.Scherrer
InformationURL
Name
The SOHO/MDI website
URL
http://soi.stanford.edu/
InformationURL
Name
The SOHO/MDI Instrument paper
URL
https://doi.org/10.1007/BF00733429
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/SOHO_MDI_LOS_MagneticField_Level_1_PT96M
Description

The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.

AccessInformation
RepositoryID
spase://SMWG/Repository/Stanford/HMI-AIA.JSOC
Availability
Online
AccessRights
Open
AccessURL
Name
MDI Data Search via Virtual Solar Observatory
URL
https://sdac.virtualsolar.org/cgi/search?time=1&inst_only=1&version=current&build=1&instrument=MDI
Style
Search
Format
FITS
Encoding
None
AccessInformation
RepositoryID
spase://SMWG/Repository/Stanford/HMI-AIA.JSOC
Availability
Online
AccessRights
Open
AccessURL
Name
MDI Data Search visa Joint Science Operations Center
URL
http://jsoc.stanford.edu/ajax/lookdata.html?ds=mdi.fd_M_96m_lev182[YYYY.MM.DD/1d]
Style
Search
Description

MDI Data Search via JSOC. Change YYYY.MM.DD in the square brackets to find the MDI data.

Format
FITS
Encoding
None
ProviderProcessingLevel
CALIBRATED
InstrumentIDs
spase://SMWG/Instrument/SOHO/MDI
MeasurementType
Magnetogram
TemporalDescription
TimeSpan
StartDate
1996-03-19 00:00:00Z
StopDate
2011-04-12 23:59:59Z
Cadence
PT96M
SpectralRange
Ni6768
ObservedRegion
Sun
ObservedRegion
Sun.Photosphere
Extension
HelioViewerID
6