Assessing the Accuracy of Global HFC-134a Satellite Observations from Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) via Aircraft, Balloon, and Model Comparisons.

ABSTRACT: HFC-134a is the most abundant hydrofluorocarbon and is a potent greenhouse gas, with rapidly increasing concentrations from use primarily in refrigeration and air conditioning applications. HFC-134a measurements mainly rely on ground-based globally distributed networks with sparse spatial coverage. Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) observes HFC-134a above 5 km globally, thus bridging observational gaps in the upper atmosphere and facilitating radiative forcing assessments. However, validation of ACE-FTS HFC-134a retrievals remains limited. Here, we evaluate the latest ACE-FTS HFC-134a retrievals using surface, aircraft, and balloon observations, with the GEOS-Chem chemical transport model (CTM) as the intercomparison platform. ACE-FTS HFC-134a retrie

SUBMITTER: Li Y 

PROVIDER: S-EPMC12810220 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature