TY JOUR TI Accounting for Subgrid Scale Heterogeneity in the Frames of Numerical Model for Global Distribution of Electric Fields in the Earth Ionosphere KW Ionosphere KW electric fields KW electric potential KW ionospheric conductivity KW field-aligned currents KW subgrid scale KW numerical modeling KW variation-difference method JO Proceedings of Petersburg Transport University AU Uvarov, V.M. PY 2022 IS 19 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"