High speed solar wind streams and solar wind interaction regions SIR CATALOGUE v1.0

2025-06-25 11:28:59

This is the HELIO4CAST high speed stream and stream interaction catalog (SIR), based on in situ magnetic field and bulk plasma observations in the heliosphere.

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2014-12-03 03:25:00

2017-12-20 01:00:00

sircat_id:

sircat_id: The unique identifier for the observed stream interaction region (SIR). unit: string.

sc insitu

sc insitu: The name of the in situ observing spacecraft. unit: string.

sir_start_time

sir_start_time: Stream interaction region start time. unit: UTC.

hss_start_time

hss_start_time: High speed stream start time, equal to the stream interface time (for STEREO, MAVEN catalogs). unit: UTC.

sir_end_time

sir_end_time: End time of the stream interaction region. unit: UTC.

hss_end_time

hss_end_time: High speed stream end time, criterion at Wind: speed < 450 km/s. unit: UTC.

hss_vtmax_time

hss_vtmax_time: High speed stream maxmimum speed time. unit: UTC.

sc_heliodistance

sc_heliodistance: Heliocentric distance of the spacecraft at hss_start_time. unit: AU.

sc_long_heeq

sc_long_heeq: Heliospheric longitude of the spacecraft at hss_start_time, range [-180,180]. unit: degree (HEEQ).

sc_lat_heeq

sc_lat_heeq: Heliospheric latitude of the spacecraft at hss_start_time, range [-90,90]. unit: degree (HEEQ).

hss_vt_max

hss_vt_max: Maximum proton speed from hss_start_time to hss_end_time. unit: km/s.

hss_vt_mean

hss_vt_mean: Mean proton speed from hss_start_time to hss_end_time. unit: km/s.

hss_vt_std

hss_vt_std: Standard deviation of proton speed from hss_start_time to hss_end_time. unit: km/s

hss_vt_mean

hss_vt_mean: Mean proton speed from hss_start_time to hss_end_time. unit: km/s

hss_bt_max

hss_bt_max: Maximum total magnetic field from hss_start_time to hss_end_time. unit: nT

hss_bt_mean

hss_bt_mean: Mean total magnetic field from hss_start_time to hss_end_time. unit: nT

hss_bt_std

hss_bt_std: Standard deviation of total magnetic field from hss_start_time to hss_end_time. unit: nT

hss_bz_min

hss_bz_min: Minimum Bz component (SCEQ) from hss_start_time to hss_end_time. unit: nT

hss_bz_mean

hss_bz_mean: Mean Bz component (SCEQ) from hss_start_time to hss_end_time. unit: nT

hss_bz_std

hss_bz_std: Standard deviation of Bz component (SCEQ) from hss_start_time to hss_end_time. unit: nT

hss_duration

hss_duration: Duration of high speed stream from hss_start_time to hss_end_time. unit: hours

ir_vt_mean

ir_vt_mean: Mean proton speed from hss_start_time to sir_end_time. unit: km/s

sir_vt_std

sir_vt_std: Standard deviation of proton speed from sir_start_time to hss_end_time. unit: km/s

sir_vt_mean

sir_vt_mean: Mean proton speed from hss_start_time to sir_end_time. unit: km/s

sir_bt_max

sir_bt_max: Maximum total magnetic field from sir_start_time to hss_end_time. unit: nT

sir_bt_mean

sir_bt_mean: Mean total magnetic field from sir_start_time to sir_end_time. unit: nT

sir_bt_std

sir_bt_std: Standard deviation of total magnetic field from sir_start_time to sir_end_time. unit: nT

sir_bz_min

sir_bz_min: Minimum Bz component (SCEQ) from sir_start_time to sir_end_time. unit: nT

sir_bz_mean

sir_bz_mean: Mean Bz component (SCEQ) from sir_start_time to sir_end_time. unit: nT

sir_bz_std

sir_bz_std: Standard deviation of Bz component (SCEQ) from sir_start_time to sir_end_time. unit: nT

sir_duration

sir_duration: Duration of stream interaction region from sir_start_time to sir_end_time. unit: hours