1. Transport analysis and source attribution of seasonal and interannual variability of CO in the tropical upper troposphere and lower stratosphere Liu, J.; Logan, Jennifer A.; Murray, Lee T.; Schwartz, M. J.; Pumphrey, H. C.; Megretskaia, I. A. 2013 Articles Carbon monoxide--Environmental aspectsStratosphere--MeasurementTropospheric chemistryAtmospheric chemistryEnvironmental sciencesClimatic changes