ACE-1 Intensive

Sampling periods on the NOAA ship DISCOVERER

• Period 1 - Day 319-330, 15-26 November

  15 November - 14 December 1995

  Region South and West of Tasmania

  12C SST isotherm approximately 42 to 42.5S

  South of 42S

  Seawater nitrate ranged from 2 - 49 M

  Seawater DMS concentrations 0.94 +/- 0.28 nM

  Median DMS flux 3.4 M m-2 d

• Period 2 - Day 330-333.4, 26-29 November

  North of 42S

  Seasonal thermocline developing (70m depth)

  Seawater DMS concentration 2.8 +/- 1.1 nM

  Median DMS flux 16.2 M m-2 d

• Period 3 - Day 333.4-338.3, 29 November - 4 December

  Lagrangian A began on day 335.5

  12C SST isotherm approximately 43 0.5S

  South of 43S

  Seawater DMS concentrations 1.3 +/- 0.41 nM

  Median DMS flux 6.4 M m-2 d

• Period 4 - Day 338.3-340.3, 4-6 December

  North of 43S

  Seawater DMS concentration 2.8 +/- 1.3 nM

  Median DMS flux 4.5 M m-2 d

• Period 5 - Day 340.3-347, 6-13 December

  Lagrangian B began on day 342

  SST and nutrient concentrations variable

  Seawater DMS concentration 2.3 +/- 1.0 nM

  Median DMS flux 8.6 M m-2 d