Bill Landing, FSU

1
Bill Landing, FSU CLIVAR A16N 2003 Broad
dissolved nitrate, Fe and Co maximum (200-800m)
under the Saharan plume (0-20N). Feature due to
atmospheric input, biological uptake and deeper
regeneration AND/OR lateral transport?
2
Dissolved nitrate contours (at 500m) show
elevated concentrations offshore suggesting that
in-situ regeneration is important (?). Other
tracers of lateral transport in suboxic zone?
Dissolved Mn shows no evidence for suboxic
plume.
3
Proposed transect along nitrate and O2 gradient
towards western Africa Crossing transects to
define N/S and E/W extent of Fe, Co, and nitrate
plume. Occupy transects at least twice Late
Summer to capture Saharan dust imprint, Mid-Spring
to assess decay rate of Fe plume.