We propose two nonparametric transition density-based speciÞcation tests for continuous-time diffusion models. In contrast to marginal density as used in the literature, transition density can capture the full dynamics of a diffusion process, and in particular, can distinguish processes with...

Recent literature highlights the contributions of global energy sectors to anthropogenic CH4 emissions and calls for immediate actions. However, it fails to explain the fugitive CH4 emissions induced by the intermediate and final trade. This paper aims to trace fugitive CH4 emissions via global...