Numpy arrays of solar wind in situ data for machine learning with python pickle made by C. Möstl, A. J. Weiss and R. L. Bailey, IWF Graz, Austria @chrisoutofspace christian.moestl@oeaw.ac.at made with https://github.com/cmoestl/heliocats files available: wind_2007_2019_heeq_ndarray.p ulysses_1990_2009_rtn_ndarray.p stereoa_2007_2019_sceq_ndarray.p stereob_2007_2014_sceq_ndarray.p vex_2007_2014_sceq_ndarray.p (note that the Venus magnetosphere has been removed) mes_2007_2015_sceq_removed_ndarray.p (Mercury magnetosphere is removed) Load into python with e.g.: >> import pickle >> file='stereob_2007_2014_sceq_ndarray.p' >> [data, attributes]=pickle.load(open(file,'rb')) see header and attributes by >> header >> attributes access data by e.g. >> data['time'] >> data['bt'] >> data['vt'] variables are: time matplotlib format (days since 1 Jan 0001 +1) bt total magnetic field bxyz magnetic field components vt total proton speed np proton density tp proton temperature xyz sapcecraft position in HEEQ cartesian coordinates r/lat/lon spacecraft position in HEEQ spherical coordinates For units see loaded "attributes" string. Spacecraft positions are given in Heliocentric Earth Equatorial Coordinates (HEEQ) coordinates. Here, Z is the solar rotation axis, X the intersection of the solar equator and solar central meridian as seen from Earth, and Y completes the right handed triad. See Hapgood 1992 http://www.igpp.ucla.edu/public/vassilis/ESS261/Lecture03/Hapgood_sdarticle.pdf for how to make conversions between coordinate systems. Coordinate system for all magnetic field components is SCEQ, except for Wind (HEEQ, which is the equivalent for SCEQ for Earth) and Ulysses (RTN, because of high latitude positions). Definition of SpaceCraft Equatorial Coordinates (SCEQ): Z is the solar rotation axis. Y is the cross product of Z and R, with R being the vector that points from the Sun to the spacecraft. X completes the right handed triad. This system is thus like HEEQ but centered on the respective in situ spacecraft, so the SCEQ X and Y base vectors are rotated by the HEEQ longitude of the in situ spacecraft from HEEQ X and Y. The Y vector is similar to the T vector in an RTN system for each spacecraft, but the X and Z vectors are rotated around Y compared to an RTN system. The differences between RTN and SCEQ for spacecraft within a few degrees of the solar equatorial plane are very small. We choose SCEQ because it has the advantage that a comparison between multipoint CME events and for comparison to simulations there is always a similar reference plane (the solar equatorial plane). Example of loaded attributes string and arrays for file='stereob_2007_2014_sceq_ndarray.p': attributes: 'dtype=[(time [matplotlib format], < f8], (bt [nT],