Publication Date:
2024-02-07
Description:
Carbon monoxide (CO) influences the radiative
budget and oxidative capacity of the atmosphere over the
Arctic Ocean, which is a source of atmospheric CO. Yet,
oceanic CO cycling is understudied in this area, particu-
larly in light of the ongoing rapid environmental changes.
We present results from incubation experiments conducted
in the Fram Strait in August–September 2019 under different
environmental conditions: while lower pH did not affect CO
production (GPCO) or consumption (kCO) rates, enhanced
GPCO and kCO were positively correlated with coloured dis-
solved organic matter (CDOM) and dissolved nitrate concen-
trations, respectively, suggesting microbial CO uptake under
oligotrophic conditions to be a driving factor for variability
in CO surface concentrations. Both production and consump-
tion of CO will likely increase in the future, but it is un-
known which process will dominate. Our results will help
to improve models predicting future CO concentrations and
emissions and their effects on the radiative budget and the
oxidative capacity of the Arctic atmosphere.
Type:
Article
,
PeerReviewed
,
info:eu-repo/semantics/article
Format:
text
Format:
text
