TY - JOUR A1 - Pinder, R W A1 - Walker, J T A1 - Bash, J O A1 - Cady-Pereira, K E A1 - Henze, D K A1 - Luo, M A1 - Osterman, G B A1 - Shephard, M W T1 - Quantifying spatial and seasonal variability in atmospheric ammonia with in situ and space-based observations. Y1 - 2011/02/18 N1 - R834559 VL - 38 IS - 4 SP - L04802 (5 pp.) ER - TY - JOUR A1 - Shephard, M W A1 - Cady-Pereira, K E A1 - Luo, M A1 - Henze, D K A1 - Pinder, R W A1 - Walker, J T A1 - Rinsland, C P A1 - Bash, J O A1 - Zhu, L A1 - Payne, V H A1 - Clarisse, L T1 - TES ammonia retrieval strategy and global observations of the spatial and seasonal variabiity of ammonia. Y1 - 2011/10/31 N1 - R834559 VL - 11 IS - 20 SP - 10743 EP - 10763 ER -