Measurement report: Regional characteristics of seasonal and long-term variations in greenhouse gases at Nainital, India, and Comilla, Bangladesh - Nomura, S.; Naja, M.; Ahmed, M. K.; Mukai, H.; Terao, Y.; Machida, T.; Sasakawa, M.; Patra, P. K. (Atmos. Chem. Phys., 2021)