TY - JOUR A1 - Toohey, M. A1 - Quine, B. M. A1 - Strong, K. A1 - Bernath, P. F. A1 - Boone, C. D. A1 - Jonsson, A. I. A1 - McElroy, C. T. A1 - Walker, K. A. A1 - Wunch, D. T1 - Balloon-borne radiometer measurements of Northern Hemisphere mid-latitude stratospheric HNO3 profiles spanning 12 years JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 23 SP - 6075 EP - 6084 Y1 - 2007/12/11 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/7/6075/2007/ L1 - https://acp.copernicus.org/articles/7/6075/2007/acp-7-6075-2007.pdf DO - 10.5194/acp-7-6075-2007 ER -