Radiative efficiency and global warming potential of the hydrofluoroether HFE-356mec3 (CH3OCF2CHFCF3) from experimental and theoretical infrared absorption cross-sections.

• Experimental absorption cross‐sections of HFE‐356mec3 have been acquired. • Results have been compared with density functional theory and ab initio methods. • The lifetime‐corrected radiative efficiency was found to be 0.31 W.m−2 ppb−1. • This leads to a 100‐year time horizon global warming potential of 260. Experimental absorption cross-section spectra of HFE-356mec3 (CH 3 OCF 2 CHFCF 3) have been acquired at three temperatures and at a resolution of 0.1 cm−1 over the spectral range 550–3500 cm−1. The results have been completed with theoretical calculations using density functional theory and ab initio methods at different levels of theory. A lifetime-corrected radiative efficiency of 0.31 Wm−2ppb−1 was obtained, leading to a 100-year time horizon global warming potential of 260 using an atmospheric lifetime of 2.5 years. [ABSTRACT FROM AUTHOR]