USE OF THE 709 NM BAND OF MERIS TO DETECT INTENSE PLANKTON BLOOMSAND OTHER CONDITIONS IN COASTAL WATERS

摘要

A peak in the spectrum of water-leaving radiance atrnabout 705 nm has been noted as a signature of densernsurface phytoplankton in bloom conditions. MERIS onrnEnvisat provides a band at 709 nm which can be used torndetect this signature. We present here an update of ourrnreport to the previous Envisat Symposium in Novemberrn2003 [1]. We confirm the previous results, showingrnmore bloom examples and describing a newrn(interesting, but not damaging) “false alarm” signal thatrnappears to be due to cosmic ray impacts on the MERISrnCCD detectors.