TY - JOUR A1 - Silber, I. A1 - Price, C. A1 - Rodger, C. J. T1 - Semi-annual oscillation (SAO) of the nighttime ionospheric D region as detected through ground-based VLF receivers JO - Atmos. Chem. Phys. J1 - ACP VL - 16 IS - 5 SP - 3279 EP - 3288 Y1 - 2016/03/14 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/16/3279/2016/ L1 - https://acp.copernicus.org/articles/16/3279/2016/acp-16-3279-2016.pdf DO - 10.5194/acp-16-3279-2016 ER -