Version:2.7.1
Catalog
ResourceID
spase://NASA/Catalog/STEREO/ICMECAT
NamingAuthority
NASA
ResourceType
Catalog
ResourceHeader
ResourceName
ICMECAT - a catalog of interplanetary coronal mass ejections
ReleaseDate
2026-02-02 13:10:25Z
RevisionHistory
RevisionEvent
ReleaseDate
2025-07-09 10:37:17
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2026-02-02 13:10:25Z
Note
Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB
Description
This is the HELIO4CAST interplanetary coronal mass ejection (ICME) catalog (ICMECAT), based on in situ magnetic field and bulk plasma observations in the heliosphere.
Contacts
AccessInformation
RepositoryID
AccessURL
Format
HTML
InstrumentIDs
PhenomenonType
InterplanetaryCoronalMassEjection
TimeSpan
StartDate
1990-12-11 04:00:00
StopDate
2024-12-20 22:34:00
Parameter #1
Name
icmecat_id
Description
icmecat_id: The unique identifier for the observed ICME. unit: string.
Support
SupportQuantity
Housekeeping
Parameter #2
Name
sc insitu
Description
sc insitu: The name of the in situ observing spacecraft. unit: string.
Support
Parameter #3
Name
icme_start_time
Description
icme_start_time: Shock arrival or density enhancement time, can be similar to mo_start_time. unit: UTC.
Support
Parameter #4
Name
mo_start_time
Description
mo_start_time: Start time of the magnetic obstacle (MO), including flux ropes, flux-rope-like, and ejecta signatures. unit: UTC.
Support
Parameter #5
Name
mo_end_time
Description
mo_end_time: End time of the magnetic obstacle. unit: UTC.
Support
Parameter #6
Name
mo_sc_heliodistance
Description
mo_sc_heliodistance: Heliocentric distance of the spacecraft at mo_start_time. unit: AU.
Support
SupportQuantity
Positional
Parameter #7
Name
mo_sc_long_heeq
Description
mo_sc_long_heeq: Heliospheric longitude of the spacecraft at mo_start_time, range [-180,180]. unit: degree (HEEQ).
Support
SupportQuantity
Orientation
Parameter #8
Name
mo_sc_lat_heeq
Description
mo_sc_lat_heeq: Heliospheric latitude of the spacecraft at mo_start_time, range [-90,90]. unit: degree (HEEQ).
Support
SupportQuantity
Orientation
Parameter #9
Name
icme_duration
Description
icme_duration: Duration of the interval between icme_start_time and mo_endtime. unit: hours.
Support
Parameter #10
Name
icme_bmax
Description
icme_bmax: Maximum total magnetic field in the full icme interval (icme_start_time to mo_end_time). unit: nT.
Support
Parameter #11
Name
icme_bmean
Description
icme_bmean: Mean total magnetic field during the full icme interval (icme_start_time to mo_end_time). unit: nT.
Support
Parameter #12
Name
icme_bstd
Description
icme_bstd: Standard deviation of the total magnetic field from icme_start_time to mo_end_time. unit: nT.
Support
Parameter #13
Name
icme_speed
Description
12: icme_speed_mean: Mean proton speed from icme_start_time to mo_end_time. unit: km/s.
Support
Parameter #14
Name
icme_speed_std
Description
icme_speed_std: Standard deviation of proton speed from icme_start_time to mo_end_time. unit: km/s.
Support
Parameter #15
Name
mo_duration
Description
mo_duration: Duration of the interval between mo_start_time and mo_endtime. unit: hours.
Support
Parameter #16
Name
mo_bmax
Description
mo_bmax: Maximum total magnetic field in the magnetic obstacle interval (mo_start_time to mo_end_time). unit: nT.
Support
Parameter #17
Name
mo_bmean
Description
mo_bmean: Mean total magnetic field in the magnetic obstacle. unit: nT.
Support
Parameter #18
Name
mo_bstd
Description
mo_bstd: Standard deviation of the total magnetic field in the magnetic obstacle. unit: nT.
Support
Parameter #19
Name
mo_bzmean
Description
mo_bzmean: Mean magnetic field Bz component in the magnetic obstacle. unit: nT.
Support
Parameter #20
Name
mo_bzmin
Description
mo_bzmin: Minimum magnetic field Bz component in the magnetic obstacle. unit: nT.
Support
Parameter #21
Name
mo_bzstd
Description
mo_bzstd: Standard deviation of the magnetic field Bz component in the magnetic obstacle. unit: nT.
Support
Parameter #22
Name
mo_bymean
Description
mo_bymean: Mean magnetic field By component in the magnetic obstacle. unit: nT.
Support
Parameter #23
Name
mo_bystd
Description
: mo_bystd: Standard deviation of the magnetic field By component in the magnetic obstacle. unit: nT.
Support
Parameter #24
Name
mo_speed_mean
Description
mo_speed_mean: Mean proton speed from mo_start_time to mo_end_time. unit: km/s.
Support
Parameter #25
Name
mo_speed_std
Description
mo_speed_std: Standard deviation of proton speed from mo_start_time to mo_end_time. unit: km/s.
Support
Parameter #26
Name
mo_expansion_speed
Description
mo_expansion_speed: Difference between proton speed at mo_start_time to proton speed at mo_end_time. unit: km/s.
Support
Parameter #27
Name
mo_pdyn_mean
Description
mo_pdyn_mean: Mean proton dynamic pressure from mo_start_time to mo_start_time. unit: nPa.
Support
Parameter #28
Name
mo_pdyn_std
Description
mo_pdyn_std: Standard deviation of proton dynamic pressure from mo_start_time to mo_start_time. unit: nPa.
Support
Parameter #29
Name
mo_density_mean
Description
mo_density_mean: Mean proton density from mo_start_time to mo_start_time. unit: cm^-3.
Support
Parameter #30
Name
mo_density_std
Description
mo_density_std: Standard deviation of proton density from mo_start_time to mo_start_time. unit: cm^-3
Support
Parameter #31
Name
mo_temperature_mean
Description
mo_temperature_mean: Mean proton temperature from mo_start_time to mo_start_time. unit: K.
Support
Parameter #32
Name
mo_temperature_std
Description
mo_temperature_std: Standard deviation of proton temperature from mo_start_time to mo_end_time. unit: K.
Support
Parameter #33
Name
sheath_speed_mean
Description
sheath_speed_mean: Mean proton speed from icme_start_time to mo_start_time, NaN if these times are similar. unit: km/s.
Support
Parameter #34
Name
sheath_speed_std
Description
sheath_speed_std: Standard deviation of proton speed from icme_start_time to mo_start_time, NaN if these times are similar. unit: km/s.
Support
Parameter #35
Name
sheath_density_mean
Description
sheath_density_mean: Mean proton density from icme_start_time to mo_start_time, NaN if these times are similar. unit: cm^-3.
Support
Parameter #36
Name
sheath_density_std
Description
sheath_density_std: Standard deviation of proton density from icme_start_time to mo_start_time, NaN if these times are similar. unit: cm^-3.
Support
Parameter #37
Name
sheath_pdyn_mean
Description
sheath_pdyn_mean: Mean proton dynamic pressure, from icme_start_time to mo_start_time, NaN if these times are similar. unit: nPa.
Support
Parameter #38
Name
sheath_pdyn_std
Description
sheath_pdyn_std: Standard deviation of proton dynamic pressure, from icme_start_time to mo_start_time, NaN if these times are similar. unit: nPa.
Support
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