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Data Access
ACE Science Center Interactive Interface
ACE SWEPAM/SWICS Level 3 Merged Solar Wind Proton Data
var authors='McComas, David J.; Gloeckler, George';
document.write(authors);
(2025).
ACE SWEPAM/SWICS Level 3 Merged Solar Wind Proton Data.
[Data set].
California Institute of Technology.
https://doi.org/10.48322/fba2-gy35. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/ACE/SWEPAM/SWICS/PT12M
Description
These data files contain 12-min resolution solar wind proton flow velocity (GSE, RTN and GSM components), scalar speed, density, and (radial component of) temperature, plus the alpha particle to proton density ratio. The data are typically from the SWEPAM instrument. But because SWEPAM has reduced sensitivity at the lowest energies, and at times underestimates the proton density, especially for very slow wind, proton density is sometimes culled from low-speed (.LT. ~350 km/s) intervals in the SWEPAM Level 2 data, and proton temperature may also be culled. More rarely, the solar wind velocity may also be culled, especially during periods of both high solar energetic particle background and high wind speeds. In these cases, SWICS-determined proton density and temperature, and possibly also flow speed (not velocity vectors), are included in the data records, with a flag to indicate whether, and which, SWICS parameters are in the records. As of July, 2012, data were available to the end of 2009.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/ACE/SWEPAM/SWICS/PT12M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
ACE SWEPAM/SWICS Level 3 Merged Solar Wind Proton Data
DOI
https://doi.org/10.48322/fba2-gy35
ReleaseDate
2025-12-04 13:28:25Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:14:15Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-05-22 18:14:41
Note
Removed spaces from description; added Naming Authority and resource type. TLK
RevisionEvent
ReleaseDate
2025-11-14 16:01:45Z
Note
Added PublicationInfo. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:28:25Z
Note
Added MetadataRightsList. Updated to 2.7.1. ZCB
Description
These data files contain 12-min resolution solar wind proton flow velocity (GSE, RTN and GSM components), scalar speed, density, and (radial component of) temperature, plus the alpha particle to proton density ratio. The data are typically from the SWEPAM instrument. But because SWEPAM has reduced sensitivity at the lowest energies, and at times underestimates the proton density, especially for very slow wind, proton density is sometimes culled from low-speed (.LT. ~350 km/s) intervals in the SWEPAM Level 2 data, and proton temperature may also be culled. More rarely, the solar wind velocity may also be culled, especially during periods of both high solar energetic particle background and high wind speeds. In these cases, SWICS-determined proton density and temperature, and possibly also flow speed (not velocity vectors), are included in the data records, with a flag to indicate whether, and which, SWICS parameters are in the records. As of July, 2012, data were available to the end of 2009.
Acknowledgement
Please acknowledge the ACE/SWEPAM and SWICS
instrument teams and the ACE Science Center
PublicationInfo
Authors
McComas, David J.; Gloeckler, George
PublicationDate
2025-11-14 16:01:45Z
PublishedBy
California Institute of Technology
Contacts
Role
Person
StartDate
StopDate
Note
1.
TechnicalContact
spase://SMWG/Person/Ruth.Skoug
2.
PrincipalInvestigator
spase://SMWG/Person/David.J.McComas
3.
PrincipalInvestigator
spase://SMWG/Person/George.Gloeckler
InformationURL
Name
ACE SWEPAM Level 3 Data Home Page
URL
http://www.srl.caltech.edu/ACE/ASC/level2/sweswi_l3desc.html
Description
ACE Science Center site describing SWEPAM/SWICS merged
solar wind proton data set
PriorIDs
spase://VSPO/NumericalData/ACE/SWEPAM/SWICS/PT12M
AccessInformation
RepositoryID
spase://SMWG/Repository/ACE_SC
Availability
Online
AccessRights
Open
AccessURL
Name
ACE Science Center Interactive Interface
URL
http://www.srl.caltech.edu/ACE/ASC/DATA/level3/swepam/data/
Description
Subset, plot, or list data
Format
Text
Acknowledgement
Please acknowledge the ACE/SWEPAM and SWICS instrument
teams and the ACE Science Center
ProviderProcessingLevel
Level 3
InstrumentIDs
spase://SMWG/Instrument/ACE/SWEPAM
spase://SMWG/Instrument/ACE/SWICS
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1998-01-28 00:00:12Z
RelativeStopDate
-P2Y
Cadence
PT12M
ObservedRegion
Heliosphere.NearEarth