Synoptic studies of the Antarctic Ross Sea with the ENEA lidar fluorosensor

摘要

The ENEA Lidar fluorosensor apparatus take part to three marine campaigns in the South-western Ross Sea and along the Southern Ocean transects up-to New Zealand, revealing the bio-optical peculiarity of coastal zones and seasonal changes encountered. The investigated transects belonged to the ship course during the XIII (Nov. '97 - Jan. '98), XV (Jan. - Feb. '00) and XVI (Jan. - Feb. '01) Italian Antarctic expeditions. Various seasonal stages (pre or post-bloom phenomena, nutrients availability) of seawaters and major biological changes (different dominant phytoplankton species, relevant photosynthetic activity) have been already identified as a final result of the three-annual monitoring activity. Surface chlorophyll and CDOM fluorescence data, collected during the XIII and XVI oceanographic campaign, were used to be compared to 8-day L3 SeaWiFS data products and to tune the bio-optical chlorophyll-a algorithm.