TY - JOUR A1 - Christakis, N. A1 - Haldoupis, C. A1 - Zhou, Q. A1 - Meek, C. T1 - Seasonal variability and descent of mid-latitude sporadic E layers at Arecibo JO - Ann. Geophys. J1 - ANGEO VL - 27 IS - 3 SP - 923 EP - 931 Y1 - 2009/03/02 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/27/923/2009/ L1 - https://angeo.copernicus.org/articles/27/923/2009/angeo-27-923-2009.pdf DO - 10.5194/angeo-27-923-2009 ER -