Summary

During Match 1998 we studied in situ bio-optical parameters along a north-south transect (142?¡E) between 42¡ and 55?¡S. Surface chlorophyll a (chl a) reflected mixed layer chl a concentrations and showed a general decrease with increasing latitude. Changes in chl a concentration often coincided with physical boundaries, and differences in fluorescence yield and photoadaptation by the phytoplankton were observed north and south of the Subantarctic Front. In this region chromophoric dissolved organic matter (CDOM) absorption, generally exceeded phytoplankton pigment absorption at 443 nm. Satellite-derived chl a, using the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) OC4 algorithm, generally underestimated the in situ chl a concentration except in areas of low chl a (<0.15 mg m-3) where the SeaWiFS algoritm was found to overestimate in situ chl a.

Authors:Clementson L.A. Parslow J.S. Turnbull A.R. McKenzie D.C. Rathbone C.E. Published in: 2001 Category 1: Peer-reviewed literature Program area: Oceanography
Clementson L.A., Parslow J.S., Turnbull A.R., McKenzie D.C., Rathbone C.E. (2001) Optical properties of waters in the Australasian sector of the Southern Ocea, Journal of Geophysical Research 106(C12). 31,611-31,625;

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