The geometry of the terrestrial magnetized environment, or geospace, varies widely in space and time due to the Earth's magnetic field interactions with the interplanetary medium. A spacecraft's location in geospace is only approximately determined by its coordinates since the environment is inhomogeneous, with distinct physical processes occurring in different regions. Knowing the location in the geospace offers a strong support for data analysis. This paper introduces a new dataset, Geospace Region and Magnetospheric Boundary identification (GRMB), which provides labelled positions for each Cluster spacecraft over the whole mission, with respect to the local environment. This continuous labelling is based on manual selection, supported by browsing 44 different Cluster data products. The GRMB dataset includes 15 labels spanning from the plasmasphere to solar wind regions. Its consistency is validated over 7 years against reference lists and by the physical properties of the GRMB regions. Over those years, Cluster spent a similar proportion of the time (≈15%) in the regions labelled lobe, plasmasheet, plasmasheet transition region, magnetosheath and solar wind.

European Space Astronomy Centre Madrid Spain

European Space Research and Technology Centre Noordwijk The Netherlands

Institute of Atmospheric Physics of the Czech Academy of Sciences Department of Space Physics 14100 Prague Czech Republic

Royal Belgian Institute for Space Aeronomy Department of Space Physics Brussels Belgium

See more in PubMed

Escoubet, C. P., Russell, C. T. & Schmidt, R.The Cluster and Phoenix Missions (Springer Dordrecht, 1997).

Escoubet, C. P.

Masson, A.

Bakrania, M. R., Rae, I. J., Walsh, A. P., Verscharen, D. & Smith, A. W. Using dimensionality reduction and clustering techniques to classify space plasma regimes.

Breuillard, H.

Nguyen, G.

Toy-Edens, V., Mo, W., Raptis, S. & Turner, D. L. Classifying 8 years of MMS dayside plasma regions via unsupervised machine learning.

Grimmich, N.

Grison, B.

Laakso, H.

Johnstone, A.

Rème, H.

Gustafsson, G.

Balogh, A.

Cornilleau-Wehrlin, N.

Décréau, P.

Darrouzet, F.

Frank, L. A. Relationship of the plasma sheet, ring current, trapping boundary, and plasmapause near the magnetic equator and local midnight.

Ganushkina, N. Y., Dandouras, I., Shprits, Y. Y. & Cao, J. Locations of boundaries of outer and inner radiation belts as observed by Cluster and Double Star.

Carpenter, D. L. & Lemaire, J. The Plasmasphere Boundary Layer.

Haaland, S.

Maggiolo, R. & Kistler, L. M. Spatial variation in the plasma sheet composition: Dependence on geomagnetic and solar activity.

Angelopoulos, V., Artemyev, A., Phan, T. D. & Miyashita, Y. Near-Earth magnetotail reconnection powers space storms. PubMed PMC

Grigorenko, E. E., Koleva, R. & Sauvaud, J.-A. On the problem of plasma sheet boundary layer identification from plasma moments in Earth’s magnetotail.

Angelopoulos, V.

Baumjohann, W., Paschmann, G., Sckopke, N., Cattell, C. A. & Carlson, C. W. Average ion moments in the plasma sheet boundary layer.

Baumjohann, W., Paschmann, G. & Cattell, C. A. Average plasma properties in the central plasma sheet.

Terasawa, T.

Fujimoto, M.

Coxon, J. C., Jackman, C. M., Freeman, M. P., Forsyth, C. & Rae, I. J. Identifying the magnetotail lobes with Cluster magnetometer data.

Maggiolo, R.

Maggiolo, R.

Fear, R. C. PubMed

Cargill, P. J.

Pitout, F., Escoubet, C. P., Klecker, B. & Rème, H. Cluster survey of the mid-altitude cusp: 1. Size, location, and dynamics.

Case, N. A. & Wild, J. A. The location of the Earth’s magnetopause: A comparison of modeled position and in situ Cluster data.

Haaland, S. PubMed PMC

Lucek, E.

Lepidi, S., Villante, U., Lazarus, A. J., Szabo, A. & Paularena, K. Observations of bow shock motion during times of variable solar wind conditions.

Lembège, B.

Kruparova, O.

Baumjohann, W. & Treumann, R. A.Basic Space Plasma Physics (Published by Imperial College press and distributed by World Scientific Publishing CO., 1996).

Grison, B., Darrouzet, F. & Maggiolo, R. The Geospace and Region Magnetosphere Boundary identification dataset (GRMB): years 2001-2007, 10.6084/m9.figshare.27952410 (2024).

Grison, B., Darrouzet, F. & Maggiolo, R. The Geospace and Region Magnetosphere Boundary dataset (GRMB): years 2001-2007, https://csa.esac.esa.int/csa-sl-tap/data?RETRIEVAL_TYPE=product&DATASET_ID=C1_CT_AUX_GRMB&DATASET_ID=C2_CT_AUX_GRMB&DATASET_ID=C3_CT_AUX_GRMB&DATASET_ID=C4_CT_AUX_GRMB&START_DATE=2001-01-01T00:00:00Z&END_DATE=2008-01-01T00:00:00Z&DELIVERY_INTERVAL=All&FLAT=True (2024).

Hapgood, M. A.

Darrouzet, F.

Fuselier, S. A., Trattner, K. J., Petrinec, S. M. & Lavraud, B. Dayside magnetic topology at the Earth’s magnetopause for northward IMF.

Boakes, P. D., Nakamura, R., Volwerk, M. & Milan, S. E. ECLAT Cluster spacecraft magnetotail plasma region identifications (2001-2009).

Sibeck, D. G., Lopez, R. E. & Roelof, E. C. Solar wind control of the magnetopause shape, location, and motion.

Howe, J. H. C. & Binsack, J. H. Explorer 33 and 35 plasma observations of magnetosheath flow.

Dowler, P., Rixon, G. & Tody, D. Table Access Protocol Version 1.0. IVOA Recommendation 27 March 2010, 10.5479/ADS/bib/2010ivoa.spec.0327D (2010).

King, J. H. & Papitashvili, N. E. Omni 5-min Data Set, 10.48322/GBPG-5R77 (2020).

Jelínek, K., Němeček, Z. & Šafránková, J. A new approach to magnetopause and bow shock modeling based on automated region identification.