ACE Magnetic Field 16-Second Level 2 Data

ResourceID

spase://VSPO/NumericalData/ACE/MAG/L2/PT16S

Description

ACE Magnetometer level 2 data, 16-second averages of field magnitude and GSE and GSM Cartesian components, plus standard deviations, plus ACE location data. The data are accessible via ftp in HDF and CDF from the ACE Science Center and CDAWeb, respectively, and in ASCII format from the value-added interfaces at those sites. The "parameter keys" given below are as used by CDAWeb. One-sec, 4-min, 1-hr, 1-day and 27-day averages are also available via the access paths given below.

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Details

Version:2.2.9

NumericalData

ResourceID

spase://VSPO/NumericalData/ACE/MAG/L2/PT16S

ResourceHeader

ResourceName: ACE Magnetic Field 16-Second Level 2 Data

ReleaseDate: 2019-08-05 15:03:35Z

Description

Acknowledgement: Please acknowledge the ACE/MAG instrument team and the ACE Science Center

Contacts

	Role	Person
1.	CoInvestigator	spase://SMWG/Person/Norman.F.Ness
2.	TechnicalContact	spase://SMWG/Person/Charles.W.Smith

InformationURL

Name: ACE Magnetometer (MAG) Level 2 data Home Page

URL: http://www.srl.caltech.edu/ACE/ASC/level2/mag_l2desc.html

Description

ACE Science Center site hosting instrument information, data release notes, as well as web utilities for plotting and downloading data

InformationURL

Name: Rules of use, and caveats

URL: http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html

Description

ACE level 2 data rules of use, and caveats

PriorIDs

spase://VHO/NumericalData/ACE/MAG/L2_PT16S

AccessInformation

RepositoryID: spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb

Availability: Online

AccessRights: Open

AccessURL

Name: FTP access to files at SPDF

URL: ftps://spdf.gsfc.nasa.gov/pub/data/ace/mag/level_2_cdaweb/mfi_h0/

Description

In CDF via ftp from CDAWeb

AccessURL

Name: HTTP access to files at SPDF

URL: https://spdf.gsfc.nasa.gov/pub/data/ace/mag/level_2_cdaweb/mfi_h0/

Description

In CDF via HTTP from SPDF

Format: CDF

Acknowledgement: Please acknowledge the ACE/MAG instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF.

AccessInformation

RepositoryID: spase://SMWG/Repository/NASA/GSFC/SPDF

Availability: Online

AccessRights: Open

AccessURL

Name: CDAWeb

URL: https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=AC_H0_MFI&index=sp_phys

ProductKey: AC_H0_MFI

Description

ACE/MAG L2 16-sec data with subset, plot, list functionalities from CDAWeb

Format: Text

Acknowledgement: Please acknowledge the ACE/MAG instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF.

AccessInformation

RepositoryID: spase://SMWG/Repository/ACE_SC

Availability: Online

AccessRights: Open

AccessURL

Name: ACE Science Center ftp area

URL: ftp://mussel.srl.caltech.edu/pub/ace/level2/mag/

Description

In HDF via ftp from ACE Science Center

Format: HDF

Acknowledgement: Please acknowledge the ACE/MAG instrument team and the ACE Science Center

AccessInformation

RepositoryID: spase://SMWG/Repository/ACE_SC

Availability: Online

AccessRights: Open

AccessURL

Name: ACE Science Center

URL: http://www.srl.caltech.edu/ACE/ASC/level2/lvl2DATA_MAG.html

Description

ACE/MAG L2 16-sec data with subset, plot, list functionalities from the ACE Science Center

Format: Text

Acknowledgement: Please acknowledge the ACE/MAG instrument team and the ACE Science Center

ProviderResourceName: ACE MAG Level 2 Data, 16-second averages

ProviderProcessingLevel: Level 2

ProviderVersion: 5

InstrumentIDs

spase://SMWG/Instrument/ACE/MAG

MeasurementType: MagneticField

TemporalDescription

TimeSpan

StartDate: 1997-09-02 00:00:12Z

RelativeStopDate: -P2M

Cadence: PT16S

ObservedRegion: Heliosphere.NearEarth

Caveats: The quality of ACE level 2 data is such that it is suitable for serious scientific study. However, to avoid confusion and misunderstanding, it is recommended that users consult with the appropriate ACE team members before publishing work derived from the data. The ACE team has worked hard to ensure that the level 2 data are free from errors, but the team cannot accept responsibility for erroneous data, or for misunderstandings about how the data may be used. This is especially true if the appropriate ACE team members are not consulted before publication. At the very least, preprints should be forwarded to the ACE team before publication.

Parameter #1

Name: Time

ParameterKey: Epoch

Description

Number of milliseconds since CDF_EPOCH: 0000-01-01T00:00:00.000. Timestamp marks beginning of interval

Units: ms

UnitsConversion: 1e-3>s

ValidMin: 1996-01-01T00:00:00.000Z

ValidMax: 2020-01-01T00:00:00.000Z

FillValue: -1.0E31

Support

SupportQuantity: Temporal

Parameter #2

Name: Time PB5

ParameterKey: Time_PB5

Description

Time of observation in year, day of year, and milliseconds. Timestamp marks beginning of interval

Structure

Size: 3

Element

Name: Year

Index: 1

Units: year

ValidMin: 1997

ValidMax: 2020

FillValue: -2147483648

Element

Name: Day of year

Index: 2

Units: day

ValidMin: 1

ValidMax: 366

FillValue: -2147483648

Element

Name: Elapsed milliseconds of day

Index: 3

Units: msec

ValidMin: 0

ValidMax: 86401000

FillValue: -2147483648

Support

SupportQuantity: Temporal

Parameter #3

Name: Bmagnitude

ParameterKey: Magnitude

Description

Magnetic field magnitude

Units: nT

UnitsConversion: 1e-9>T

ValidMin: 0.0

ValidMax: 500.0

FillValue: -1.0E31

Field

Qualifier: Average

Qualifier: Magnitude

FieldQuantity: Magnetic

Parameter #4

Name: B GSE

ParameterKey: BGSEc

Description

Magnetic field vector in GSE Cartesian coordinates (16 sec)

Units: nT

UnitsConversion: 1e-9>T

CoordinateSystem

CoordinateRepresentation: Cartesian

CoordinateSystemName: GSE

Structure

Size: 3

Element

Name: Bx GSE

Qualifier: Component.I

Index: 1

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Element

Name: By GSE

Qualifier: Component.J

Index: 2

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Element

Name: Bz GSE

Qualifier: Component.K

Index: 3

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Field

Qualifier: Vector

Qualifier: Component.I

Qualifier: Component.J

Qualifier: Component.K

FieldQuantity: Magnetic

Parameter #5

Name: B GSM

ParameterKey: BGSM

Description

Magnetic field vector in GSM coordinates (16 sec)

Units: nT

UnitsConversion: 1e-9>T

CoordinateSystem

CoordinateRepresentation: Cartesian

CoordinateSystemName: GSM

Structure

Size: 3

Element

Name: Bx GSM

Qualifier: Component.I

Index: 1

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Element

Name: By GSM

Qualifier: Component.J

Index: 2

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Element

Name: Bz GSM

Qualifier: Component.K

Index: 3

ValidMin: -65534.0

ValidMax: 65534.0

FillValue: -1.0E31

Field

Qualifier: Vector

Qualifier: Component.I

Qualifier: Component.J

Qualifier: Component.K

FieldQuantity: Magnetic

Parameter #6

Name: B RMS

ParameterKey: dBrms

Description

RMS of magnetic field magnitude (16 sec period)

Units: nT

UnitsConversion: 1e-9>T

ValidMin: 0.0

ValidMax: 10.0

FillValue: -1.0E31

Field

Qualifier: StandardDeviation

Qualifier: Magnitude

FieldQuantity: Magnetic

Parameter #7

Name: Data Quality Flag

ParameterKey: Q_FLAG

Description

Data Quality Flag: 0 = good; 1 = S/C Maneuver & subsequent high-nutation period (~4 hr) 2 = Bad data/missing data

ValidMin: 0

ValidMax: 2

FillValue: -2147483648

Support

SupportQuantity: Other

Parameter #8

Name: S/C position in GSE

ParameterKey: SC_pos_GSE

Description

ACE s/c position in GSE coordinates

Units: km

UnitsConversion: 1e3>m

CoordinateSystem

CoordinateRepresentation: Cartesian

CoordinateSystemName: GSE

Structure

Size: 3

Element

Name: X GSE

Qualifier: Component.I

Index: 1

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Element

Name: Y GSE

Qualifier: Component.J

Index: 2

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Element

Name: Z GSE

Qualifier: Component.K

Index: 3

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Support

SupportQuantity: Positional

Parameter #9

Name: S/C position in GSM

ParameterKey: SC_pos_GSM

Description

ACE s/c position in GSM coordinates

Caveats

Units: km

UnitsConversion: 1e3>m

CoordinateSystem

CoordinateRepresentation: Cartesian

CoordinateSystemName: GSM

Structure

Size: 3

Element

Name: X GSM

Qualifier: Component.I

Index: 1

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Element

Name: Y GSM

Qualifier: Component.J

Index: 2

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Element

Name: Z GSM

Qualifier: Component.K

Index: 3

ValidMin: -2000000.0

ValidMax: 2000000.0

FillValue: -1.0E31

Support

SupportQuantity: Positional