Browsing by Author "Achterberg, Eric P."

Now showing items 1-12 of 12

    • A Comparison between Four Analytical Methods for the Measurement of Fe(II) at Nanomolar Concentrations in Coastal Seawater. 

      Hopwood, Mark J.; Birchill, Antony J.; Gledhill, Martha; Achterberg, Eric P.; Klar, Jessica K.; Milne, Angela (2017)
      Dissolved Fe(II) in seawater is deemed an important micronutrient for microbial organisms, but its analysis is challenging due to its transient nature. We conducted a series of Fe(II) method comparison experiments, where ...

    • Developing Autonomous Observing Systems for Micronutrient Trace Metals. 

      Grand, Maxime M.; Laes-Huon, Agathe; Fietz, Susanne; Resing, Joseph A.; Obata, Hajime; Luther, George W.; Tagliabue, Alessandro; Achterberg, Eric P.; Middag, Rob; Tovar-Sánchez, Antonio; Bowie, Andrew R. (2019)
      Trace metal micronutrients are integral to the functioning of marine ecosystems and the export of particulate carbon to the deep ocean. Although much progress has been made in mapping the distributions of metal micronutrients ...

    • Developments in marine pCO2 measurement technology; towards sustained in situ observations. 

      Clarke, Jennifer S.; Achterberg, Eric P.; Connelly, Douglas P.; Schuster, Ute; Mowlem, Matthew (2017)
      The oceanic uptake of anthropogenic CO2 causes pronounced changes to the marine carbonate system. High quality pCO2 measurements with good temporal and spatial coverage are required to monitor the oceanic uptake, identify ...

    • Estimating Uncertainties in Oceanographic Trace Element Measurements. 

      Worsfold, Paul J.; Achterberg, Eric P.; Birchill, Antony J.; Clough, Robert; Leito, Ivo; Lohan, Maeve C.; Milne, Angela; Ussher, Simon J. (2019)
      A realistic estimation of uncertainty is an essential requirement for all analytical measurements. It is common practice, however, for the uncertainty estimate of a chemical measurement to be based on the instrumental ...

    • Evaluation of a Ferrozine Based Autonomous in Situ Lab-on-Chip Analyzer for Dissolved Iron Species in Coastal Waters. 

      Geissler, Felix; Achterberg, Eric P.; Beaton, Alexander D.; Hopwood, Mark J.; Clarke, Jennifer S.; Mutzberg, André; Mowlem, Matt C.; Connelly, Douglas P. (2017)
      The trace metal iron (Fe) is an essential micronutrient for phytoplankton growth and limits, or co-limits primary production across much of the world’s surface ocean. Iron is a redox sensitive element, with Fe(II) and ...

    • Evolving and Sustaining Ocean Best Practices and Standards for the Next Decade. 

      Pearlman, Jay; Bushnell, Mark; Coppola, Laurent; Karstensen, Johannes; Buttigieg, Pier Luigi; Pearlman, Francoise; Simpson, Pauline; Barbier, Michele; Muller-Karger, Frank E.; Munoz-Mas, Cristian; Pissierssens, Peter; Chandler, Cyndy; Hermes, Juliet; Heslop, Emma; Jenkyns, Reyna; Achterberg, Eric P.; Bensi, Manuel; Bittig, Henry C.; Blandin, Jerome; Bosch, Julie; Bourles, Bernard; Bozzano, Roberto; Buck, Justin J. H.; Burger, Eugene F.; Cano, Daniel; Cardin, Vanessa; Charcos Llorens, Miguel; Cianca, Andrés; Chen, Hua; Cusack, Caroline; Delory, Eric; Garello, Rene; Giovanetti, Gabriele; Harscoat, Valerie; Hartman, Susan; Heitsenrether, Robert; Jirka, Simon; Lara-Lopez, Ana; Lantéri, Nadine; Leadbetter, Adam; Manzella, Giuseppe; Maso, Joan; McCurdy, Andrea; Moussat, Eric; Ntoumas, Manolis; Pensieri, Sara; Petihakis, George; Pinardi, Nadia; Pouliquen, Sylvie; Przeslawski, Rachel; Roden, Nicholas P.; Silke, Joe; Tamburri, Mario N.; Tang, Hairong; Tanhua, Toste; Telszewski, Maciej; Testor, Pierre; Thomas, Julie; Whoriskey, Fred (2019)
      The oceans play a key role in global issues such as climate change, food security, and human health. Given their vast dimensions and internal complexity, efficient monitoring and predicting of the planet’s ocean must be ...

    • Improved Calibration and Data Processing Procedures of OPUS Optical Sensor for High-Resolution in situ Monitoring of Nitrate in Seawater. 

      Nehir, Münevver; Esposito, Mario; Begler, Christian; Frank, Carsten; Zielinski, Oliver; Achterberg, Eric P. (2021)
      Nitrate, an essential nutrient for primary production in natural waters, is optically detectable in the ultraviolet spectral region of 217–240 nm, with no chemical reagents required. Optical nitrate sensors allow monitoring ...

    • A Lab-On-Chip Phosphate Analyzer for Long-term In Situ Monitoring at Fixed Observatories: Optimization and Performance Evaluation in Estuarine and Oligotrophic Coastal Waters, 

      Grand, Maxime M.; Clinton-Bailey, Geraldine S.; Beaton, Alexander D.; Schaap, Allison M.; Johengen, Thomas H.; Tamburri, Mario N.; Connelly, Douglas P.; Mowlem, Matthew C.; Achterberg, Eric P. (2017)
      The development of phosphate sensors suitable for long-term in situ deployments in natural waters, is essential to improve our understanding of the distribution, fluxes, and biogeochemical role of this key nutrient in a ...

    • Machine Learning Predicts the Presence of 2,4,6-Trinitrotoluene in Sediments of a Baltic Sea Munitions Dumpsite Using Microbial Community Compositions. 

      Janssen, René; Beck, Aaron J.; Werner, Johannes; Dellwig, Olaf; Alneberg, Johannes; Kreikemeyer, Bernd; Maser, Edmund; Böttcher, Claus; Achterberg, Eric P.; Andersson, Anders F.; Labrenz, Matthias (2021)
      Bacteria are ubiquitous and live in complex microbial communities. Due to differences in physiological properties and niche preferences among community members, microbial communities respond in specific ways to environmental ...

    • Perspectives on in situ Sensors for Ocean Acidification Research. 

      Sastri, Akash R.; Christian, James R.; Achterberg, Eric P.; Atamanchuk, Dariia; Buck, Justin J. H.; Bresnahan, Philip; Duke, Patrick J.; Evans, Wiley; Gonski, Stephen F.; Johnson, Bruce; Juniper, S. Kim; Mihaly, Steve; Miller, Lisa A.; Morley, Mike; Murphy, Dave; Nakaoka, Shin-ichiro; Ono, Tsuneo; Parker, George; Simpson, Kyle; Tsunoda, Tomohiko (2019)
      As ocean acidification (OA) sensor technology develops and improves, in situ deployment of such sensors is becoming more widespread. However, the scientific value of these data depends on the development and application ...

    • Toward a Harmonization for Using in situ Nutrient Sensors in the Marine Environment. 

      Daniel, Anne; Laës-Huon, Agathe; Barus, Carole; Beaton, Alexander D.; Blandfort, Daniel; Guigues, Nathalie; Knockaert, Marc; Muraron, Dominique; Salter, Ian; Woodward, E. Malcolm S.; Greenwood, Naomi; Achterberg, Eric P. (2020)
      Improved comparability of nutrient concentrations in seawater is required to enhance the quality and utility of measurements reported to global databases. Significant progress has been made over recent decades in improving ...

    • Toward a Quality-Controlled and Accessible Pitzer Model for Seawater and Related Systems. 

      Turner, David R.; Achterberg, Eric P.; Chen, Chen-Tung A.; Clegg, Simon L.; Hatje, Vanessa; Maldonado, Maria T.; Sander, Sylvia G.; van den Berg, Constant M. G.; Wells, Mona (2016)
      We elaborate the need for a quality-controlled chemical speciation model for seawater and related natural waters, work which forms the major focus of SCOR Working Group 145. Model development is based on Pitzer equations ...