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Wind Energetic Particle Acceleration, Composition and Transport (EPACT)/LEMT 1-Hr Spin-Sectored H,He,O,Fe Counts for Events

(2025). Wind Energetic Particle Acceleration, Composition and Transport (EPACT)/LEMT 1-Hr Spin-Sectored H,He,O,Fe Counts for Events [Data set]. Space Physics Data Facility.

ResourceID
spase://NASA/NumericalData/Wind/EPACT/LEMT/Events/SEC/PT1H

Description

This data set contains hourly counts of H, He, O
and Fe nuclei in 16 look directions about the spacecraft spin axis.
Counts for each of the four species are given at 2.5-5 MeV/n, and an
additional count is given for 5-8 MeV/n He. As of 10/2011, the data
cover 39 1997-2006 multi-day intervals that include energetic solar
particle events. ASCII data words are comma-separated. For a given
particle event, there are species-specific files. File naming uses
the convention XX_sec_YYYYMMDD, where XX = H, He2 (2.5-5 MeV/n),
He5 (5-8 MeV/n), O or Fe, and where YYYYMMDD is the day of the first
record of the file. Sectoring is defined with respect to the
ecliptic plane projection of the concurrently measured magnetic
field vector. The edge of sector #1 is coincided with the projection
of B on the ecliptic plane, so phi value of the center of sector i
is phiB+11.25+(i-1)*22.5 deg, where phiB is the longitudinal angle
of B.

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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/Wind/EPACT/LEMT/Events/SEC/PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Wind Energetic Particle Acceleration, Composition and Transport (EPACT)/LEMT 1-Hr Spin-Sectored H,He,O,Fe Counts for Events
ReleaseDate
2025-12-04 13:32:50Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:16:04Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:01:48Z
Note
Added PublicationInfo. 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 13:32:50Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description

This data set contains hourly counts of H, He, O
and Fe nuclei in 16 look directions about the spacecraft spin axis.
Counts for each of the four species are given at 2.5-5 MeV/n, and an
additional count is given for 5-8 MeV/n He. As of 10/2011, the data
cover 39 1997-2006 multi-day intervals that include energetic solar
particle events. ASCII data words are comma-separated. For a given
particle event, there are species-specific files. File naming uses
the convention XX_sec_YYYYMMDD, where XX = H, He2 (2.5-5 MeV/n),
He5 (5-8 MeV/n), O or Fe, and where YYYYMMDD is the day of the first
record of the file. Sectoring is defined with respect to the
ecliptic plane projection of the concurrently measured magnetic
field vector. The edge of sector #1 is coincided with the projection
of B on the ecliptic plane, so phi value of the center of sector i
is phiB+11.25+(i-1)*22.5 deg, where phiB is the longitudinal angle
of B.

Acknowledgement
Dr. Tycho T. Von Rosenvinge
PublicationInfo
Authors
Rosenvinge, Tycho T. V.; Reames, Donald V.
PublicationDate
2025-11-14 16:01:48Z
PublishedBy
Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Tycho.T.Von.Rosenvinge
2.CoInvestigatorspase://SMWG/Person/Donald.V.Reames
3.DataProducerspase://SMWG/Person/Lun.C.Tan
InformationURL
PriorIDs
spase://VEPO/NumericalData/Wind/EPACT/LEMT/Events/SEC/PT1H
spase://VSPO/NumericalData/Wind/EPACT/LEMT/Events/SEC/PT1H
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
RightsList
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 NASA Heliophysics data products
AccessURL
Name
Wind repository
URL
Description

File-level access to event-specific, species-specific
ASCII files

Format
Text
Acknowledgement
Please acknowledge Principal Investigator T. von Rosenvinge and the Wind EPACT team.
ProcessingLevel
Uncalibrated
InstrumentIDs
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1997-11-03 00:00:00
StopDate
2006-12-17 00:00:00
Cadence
PT1H
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Time
ParameterKey
Column_1-Column_5
Description

Universal time at start of hour average

Cadence
PT1H
Structure
Size
5
Description

Year, month, day, hour at start of average, and
fractional day of year at midpoint of average

Support
SupportQuantity
Temporal
Parameter #2
Name
Species-specific counts
ParameterKey
Column_6-Column_17
Description

Counts in 16 look directions, for species identified
in the file name (H,He2,He5,O, or Fe)

Cadence
PT1H
Structure
Size
16
Description

This is a 16 element array containing counts
in each of 16 look directions.

Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
ParticleQuantity
Counts
AtomicNumber
1
AtomicNumber
2
AtomicNumber
8
AtomicNumber
26
EnergyRange
Low
2.5
High
5
Units
MeV/n