TY - JOUR A1 - Minkwitz, D. A1 - van den Boogaart, K. G. A1 - Gerzen, T. A1 - Hoque, M. A1 - Hernández-Pajares, M. T1 - Ionospheric tomography by gradient-enhanced kriging with STEC measurements and ionosonde characteristics JO - Ann. Geophys. J1 - ANGEO VL - 34 IS - 11 SP - 999 EP - 1010 Y1 - 2016/11/14 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/34/999/2016/ L1 - https://angeo.copernicus.org/articles/34/999/2016/angeo-34-999-2016.pdf DO - 10.5194/angeo-34-999-2016 ER -