pigmentdata.xls contains concentrations of marker pigments (micro g.L-1) for each depth at each station. Table contains data for: CTD, Lat, Long, Depth, Chl_c3, Chlc1+c2, Peridinin, 19'-But, Fucoxanthin, 19'-Hex, Phaeophorbides_a, Prasinoxanthin, Diadinoxanthin, Antheraxanthin, Alloxanthin, Diatoxanthin, Lutein, Zeaxanthin, Chl_b, Un421, Chl_a, Phaeophytins_a, Total chemtaxres.xls contains concentrations of Chlorophyll a (micro g.L-1) for each depth at each station, allocated by CHEMTAX software between 8 algal groups: Table contains data for: CTD, lat, long, depth, and the amount of Chlorophyll a allocated by CHEMTAX software between the following algal groups: Prasinophytes, Dinoflagellates, Cryptophytes, Hapto3s, Hapto4s, Chlorophytes, Cyanobacteria, Diatoms chemtaxintegres.xls contains the total concentration of chlorophyll a at each station (mg.m-2), integrated to 150m depth, as allocated by CHEMTAX software between 8 algal groups. Data include CTD, lat, long, and integrated Chl a in the following groups: Prasinophytes, Dinoflagellates, Cryptophytes, Hapto3s, Hapto4s, Chlorophytes, Cyanobacteria, Diatoms, as well as the percentage contribution by each group. Methods used in the analysis are provided in the references given below. The fields for this dataset are: latitude longitude Total cyanobacteria diatoms prasinophytes% Dinoflagellates% cryptophytes% hapto3s% hapto4s% chlorophytes% cyanobacteria% diatoms% CTD Depth Chl_c3 Chl1+c2 Peridinin 19'-But Fucoxanthin 19'-Hex Phaeophorbides_a Prasinoxanthin Diadinoxanthin Antheraxanthin Alloxanthin Diatoxanthin Lutein Zeaxanthin Chl_b Un421 Chl_a Phaeophytins_a

From 1991 to 2000 14 voyages have been completed in the Southern Ocean. Measurements of DMS (Dimethylsulfide) and DMSP (Dimethylsulfoniopropionate) have been carried out on surface and subsurface waters together with physical and biological measurements, with a view to understanding the main processes that affect DMS in the Southern Ocean. The first flux measurements have been carried out for DMS (see Curran and Jones 2000) in the last 3 years a concerted study has been carried out in the seasonal ice zone this study aims to identify the major phytoplankton assemblages responsible for DMS and DMSP production in the sea ice zone. It is thought that the sea ice zone also contributes to DMS in the atmosphere. This is being quantified. The fields in this dataset are: Site Date Time (local) Latitude Longitude Snow Cover (metres) Core Length (metres) DMSPt (nano Mols) Chlorophyl a (micrograms per litre) Sea Ice depth (metres) Pigments Fucoxanthin (micrograms per litre) Peridinin (micrograms per litre) 19' hexanoyloxyfucoxanthin (micrograms per litre) Salinity (ppt) Nitrate (micro Mols) Nitrite (micro Mols) Silicate (micro Mols) Phosphate (micro Mols)