TY - JOUR A1 - Xiong, C. A1 - Park, J. A1 - Lühr, H. A1 - Stolle, C. A1 - Ma, S. Y. T1 - Comparing plasma bubble occurrence rates at CHAMP and GRACE altitudes during high and low solar activity JO - Ann. Geophys. J1 - ANGEO VL - 28 IS - 9 SP - 1647 EP - 1658 Y1 - 2010/09/06 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/28/1647/2010/ L1 - https://angeo.copernicus.org/articles/28/1647/2010/angeo-28-1647-2010.pdf DO - 10.5194/angeo-28-1647-2010 ER -