
Global emissions of methane, carbon monoxide, and methyl chloroform for the year 2020. Emission estimates are derived using a four-dimensional variational (4D‑Var) data assimilation in the GEOS-Chem Adjoint Model that integrates space‑based observations of methane, formaldehyde (HCHO), and carbon monoxide from the TROPOspheric Monitoring Instrument (TROPOMI), along with in situ NOAA measurements of methyl chloroform. For a full description see:Yu, X., Millet, D. B., Henze, D. K., Worden, H., Vigouroux, C., Patra, P., Hill, J. D., & Jackson, R. B. (2026). Multi-species constraints resolve methane source versus sink changes: lessons from 2020. Earth's Future, in press.
Carbon Monoxide, Methane
Carbon Monoxide, Methane
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