Abstract
Observations of chlorofluorocarbon in the Antarctic Ocean and a concomitant analysis of its life history for the past 80 years reveal the recently identified Amundsen-Bellingshausen Seas Low (ABSL) persuaded the invasion of chlorofluorocarbon in the Antarctic/Southern Ocean sectors. Two distinct roles of ABSL in trace gas fluxes in the Antarctic Ocean are identified; (a) ABSL helps to localize the prominent invasion zones of trace gases in the Antarctic sector to specific areas over the Amundsen-Bellingshausen Seas, (b) it modulates the ‘grip’ of southern annular mode in trace gas fluxes of the Antarctic Ocean. The ABSL region is a gateway to ∼25% of southern hemispheric chlorofluorocarbon invading the ocean. The study has implications on trace gas fluxes and their Antarctic sector changes under present and future climate.
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