Professor Gillian Stewart of EES and Queens College coauthored a paper entitled, “Temporal variability of dissolved iron species in the mesopelagic zone at Ocean Station PAPA” in the Journal of Marine Science.

Highlights include:

• A dissolved Fe enhancement in the mesopelagic zone of the NE Pacific was observed.

• The anomaly was also evident in Fe(II) distribution with depth.

• Aerosol deposition from Siberian forest fires is the likely cause of the anomalies.

• Dissolved Fe at the surface was at background levels.

• There was no evidence of a phytoplankton bloom.