A French study published in Biogeosciences finds anthropogenic carbon stored in
the subpolar North Atlantic (A25-OVIDE hydrographic section) rose by more than
one-third over the past 30 years. Researchers used ship observations, ocean
reanalysis and neural-network reconstructions to produce monthly concentration
and transport time series for natural and anthropogenic carbon; natural carbon
showed no significant trend while anthropogenic carbon increased ~33%,
attributed mainly to higher atmospheric anthropogenic carbon. Authors say
observed changes are primarily linked to human emissions and that tracking ocean
uptake and redistribution are essential for climate projections.
