de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 2017 Seawater biogeochemical measurements (nutrients, chlorophyll-a and pCO2) from high-resolution underway sampling across the Agulhas Bank in 2014 and 2015 dataset Department of Environmental Affairs https://doi.org/10.1594/PANGAEA.882181 2017-10-23T08:28:28 Underway water supply systems on modern research vessels allow for easy access to a continuous supply of near-surface seawater samples, that can be sampled inline and continuously, or discretely. Such sampling strategies are under-utilized and can provide data valuable for comparison with satellite observations of surface ocean properties, and investigation of sub-mesoscale variability and processes. This dataset represents two transects across the Agulhas Bank, a critical ocean area positioned at the southern tip of Africa, between the southern extremities of the Benguela and Agulhas Currents. On both transects discrete water sampling was carried out at 15 to 20-minute time intervals, while the ship was underway, for analysis of dissolved nutrients and chlorophyll-a; inline measurements for temperature, salinity and pCO2 were noted at each discrete water sampling point. The first transect was carried out on board the R/V SA Agulhas II in April 2014, and the second on board the R/V Algoa, in April 2015. The underway pCO2 data should be treated this caution, as the accuracy of the onboard calibration cannot be guaranteed; the data for pCO2 is included regardless, since the trends are potentially useful and interesting qualitatively. 18.266 27.971 -42.5 -33.523 22.70074844074846 -35.18324116424115 2014-05-02T05:55:00 2015-04-26T10:13:19 0.0 0.0 time series Agulhas_Bank -35.0 23.3 4257 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Sample ID Sample ID de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Sample ID DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Longitude DEPTH, water Depth water m depth http://purl.obolibrary.org/obo/PATO_0001595 water http://purl.obolibrary.org/obo/CHEBI_15377 Length L http://dbpedia.org/resource/Length de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Depth water [m] Temperature, water Temp °C Temperature Θ http://dbpedia.org/resource/Temperature water http://purl.obolibrary.org/obo/CHEBI_15377 de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Temp [°C] Salinity Sal salinity http://purl.obolibrary.org/obo/PATO_0085001 de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 PSU Sal Silicate Si(OH)4 µmol/l Molar Concentration de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Si(OH)4 [µmol/l] Phosphate [PO4]3- µmol/l phosphate http://purl.obolibrary.org/obo/CHEBI_26020 Molar Concentration de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 [PO4]3- [µmol/l] Nitrate [NO3]- µmol/l nitrate http://purl.obolibrary.org/obo/CHEBI_17632 Molar Concentration de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 [NO3]- [µmol/l] Nitrite [NO2]- µmol/l nitrite http://purl.obolibrary.org/obo/CHEBI_16301 Molar Concentration de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 [NO2]- [µmol/l] Chlorophyll a Chl a µg/l hdl:10013/epic.32187.d001 chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Density http://dbpedia.org/resource/Density de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 Chl a [µg/l] Carbon dioxide, partial pressure pCO2 µatm carbon dioxide http://purl.obolibrary.org/obo/CHEBI_16526 partial pressure Energy Density http://dbpedia.org/resource/Energy_density Force Per Area de Villiers Stephanie steph.devilliers@gmail.com 0000-0002-7500-6293 pCO2 [µatm] citable author55350 event2853380 geocode1599 geocode1600 geocode1601 geocode1619 license101 param16065 param2136 param716 param717 param755 param756 param757 param758 param763 pi55350 sourceinst20563 term1073131 term1073482 term1073483 term1073484 term1073490 term1073594 term2606205 term2698012 term40646 term43792 term43821 term43834 term43863 term43972 term43975 term44030 topotype8