AMT19 (JC039) micro-molar nutrient measurements from CTD bottle samples.

This dataset consists of 727 measurements of micromolar nutrient concentrations made on samples collected during the Atlantic Meridional Transect programme cruise 19 (AMT19 JC039) between 13th October and 1st December 2009. The cruise track between UK and Chile passed through both north and south Atlantic gyres. This dataset contributes to the AMT time-series of core oceanographic measurements along a north-south transect of the Atlantic Ocean. Samples were collected on a daily basis at 8 to 13 depths in the upper 250 m using a CTD rosette with 24 x 20 L OTE (Ocean Test Equipment) bottles. Samples were analysed within 3-4 hours of collection for 'nitrate+nitrite', nitrite, phosphate and silicate using a 5-channel Bran and Luebbe AAIII segmented flow autoanalyser. The analytical chemical methodologies used were according to Brewer and Riley (1965) for nitrate, Grasshoff (1976) for nitrite and Kirkwood (1989) for phosphate and silicate.