Articles | Volume 16, issue 1
https://doi.org/10.5194/os-16-253-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-16-253-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Feb 2020
Research article |
| 28 Feb 2020
| 28 Feb 2020
High-resolution physical–biogeochemical structure of a filament and an eddy of upwelled water off northwest Africa
Wilken-Jon von Appen
CORRESPONDING AUTHOR
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Volker H. Strass
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Astrid Bracher
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Hongyan Xi
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Cora Hörstmann
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Morten H. Iversen
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Anya M. Waite
Department of Oceanography and the Ocean Frontier Institute, Dalhousie University, Halifax, Nova Scotia, Canada
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The high-resolution ocean models ROMS and FESOM configured for the Fram Strait reveal very energetic ocean conditions there. The two main currents meander strongly and shed circular currents of water, called eddies. Our analysis shows that this region is characterised by small and short-lived eddies (on average around a 5 km radius and 10 d lifetime). Both models agree on eddy properties and show similar patterns of baroclinic and barotropic instability of the West Spitsbergen Current.
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In the Fram Strait, Arctic Ocean outflow is joined by Atlantic Water (AW) that has not flowed through the Arctic Ocean. The confluence creates a density gradient which steepens and draws closer to the east Greenland shelf break from N to S. This brings the warm AW closer to the shelf break. South of 79° N, AW has reached the shelf break and the East Greenland Current has formed. When AW reaches the Greenland shelf it may propagate through troughs to glacier termini and contribute to glacier melt.
Amelie Driemel, Eberhard Fahrbach, Gerd Rohardt, Agnieszka Beszczynska-Möller, Antje Boetius, Gereon Budéus, Boris Cisewski, Ralph Engbrodt, Steffen Gauger, Walter Geibert, Patrizia Geprägs, Dieter Gerdes, Rainer Gersonde, Arnold L. Gordon, Hannes Grobe, Hartmut H. Hellmer, Enrique Isla, Stanley S. Jacobs, Markus Janout, Wilfried Jokat, Michael Klages, Gerhard Kuhn, Jens Meincke, Sven Ober, Svein Østerhus, Ray G. Peterson, Benjamin Rabe, Bert Rudels, Ursula Schauer, Michael Schröder, Stefanie Schumacher, Rainer Sieger, Jüri Sildam, Thomas Soltwedel, Elena Stangeew, Manfred Stein, Volker H Strass, Jörn Thiede, Sandra Tippenhauer, Cornelis Veth, Wilken-Jon von Appen, Marie-France Weirig, Andreas Wisotzki, Dieter A. Wolf-Gladrow, and Torsten Kanzow
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Our oceans are always in motion – huge water masses are circulated by winds and by global seawater density gradients resulting from different water temperatures and salinities. Measuring temperature and salinity of the world's oceans is crucial e.g. to understand our climate. Since 1983, the research icebreaker Polarstern has been the basis of numerous water profile measurements in the Arctic and the Antarctic. We report on a unique collection of 33 years of polar salinity and temperature data.
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To better understand the marine phytoplankton variability on different scales in both space and time, this study proposed a machine learning based scheme to provide continuous and consistent long-term observations of various phytoplankton groups from space on a global scale, which enables time series analysis for further trend and anomaly investigations. This study provides an essential ocean variable to help assess the ocean health in the biogeochemical aspect.
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Marine carbohydrates are produced in the surface of the ocean, enter the atmophere as part of sea spray aerosol particles, and potentially contribute to the formation of fog and clouds. Here, we present the results of a sea–air transfer study of marine carbohydrates conducted in the high Arctic. Besides a chemo-selective transfer, we observed a quick atmospheric aging of carbohydrates, possibly as a result of both biotic and abiotic processes.
Aleksandra Cherkasheva, Rustam Manurov, Piotr Kowalczuk, Alexandra N. Loginova, Monika Zabłocka, and Astrid Bracher
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We aimed to improve the quality of regional Greenland Sea primary production estimates. Seventy two versions of primary production model setups were tested against field data. Best performing models had local biomass and light absorption profiles. Thus by using local parametrizations for these parameters we can improve Arctic primary production model performance. Annual Greenland Sea basin estimates are larger than previously reported.
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Continuous monitoring of phytoplankton groups using satellite data is crucial for understanding global ocean phytoplankton variability on different scales in both space and time. This study focuses on four important phytoplankton groups in the Atlantic Ocean to investigate their trend, anomaly and phenological characteristics both over the whole region and at subscales. This study paves the way to promote potentially important ocean monitoring indicators to help sustain the ocean health.
Krissy Anne Reeve, Torsten Kanzow, Olaf Boebel, Myriel Vredenborg, Volker Strass, and Rüdiger Gerdes
Ocean Sci., 19, 1083–1106, https://doi.org/10.5194/os-19-1083-2023, https://doi.org/10.5194/os-19-1083-2023, 2023
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The Weddell Gyre is key for bottom water formation. Prior studies show warming of the whole water column, except for the gyre’s heat source, Warm Deep Water (WDW). We use Argo floats to estimate a heat budget within WDW. Heat advects into the southern limb and upwards from below throughout. Turbulent diffusion removes heat through the top and transports heat from the southern limb into the interior and southwards towards Antarctica. Turbulent diffusion imports heat across the northern boundary.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Thomas Jackson, Andrei Chuprin, Malcolm Taberner, Ruth Airs, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Robert J. W. Brewin, Elisabetta Canuti, Francisco P. Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Afonso Ferreira, Scott Freeman, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Ralf Goericke, Richard Gould, Nathalie Guillocheau, Stanford B. Hooker, Chuamin Hu, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Steven Lohrenz, Hubert Loisel, Antonio Mannino, Victor Martinez-Vicente, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Enrique Montes, Frank Muller-Karger, Aimee Neeley, Michael Novak, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Rüdiger Röttgers, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Crystal Thomas, Rob Thomas, Gavin Tilstone, Andreia Tracana, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Bozena Wojtasiewicz, Simon Wright, and Giuseppe Zibordi
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Rainer Kiko, Marc Picheral, David Antoine, Marcel Babin, Léo Berline, Tristan Biard, Emmanuel Boss, Peter Brandt, Francois Carlotti, Svenja Christiansen, Laurent Coppola, Leandro de la Cruz, Emilie Diamond-Riquier, Xavier Durrieu de Madron, Amanda Elineau, Gabriel Gorsky, Lionel Guidi, Helena Hauss, Jean-Olivier Irisson, Lee Karp-Boss, Johannes Karstensen, Dong-gyun Kim, Rachel M. Lekanoff, Fabien Lombard, Rubens M. Lopes, Claudie Marec, Andrew M. P. McDonnell, Daniela Niemeyer, Margaux Noyon, Stephanie H. O'Daly, Mark D. Ohman, Jessica L. Pretty, Andreas Rogge, Sarah Searson, Masashi Shibata, Yuji Tanaka, Toste Tanhua, Jan Taucher, Emilia Trudnowska, Jessica S. Turner, Anya Waite, and Lars Stemmann
Earth Syst. Sci. Data, 14, 4315–4337, https://doi.org/10.5194/essd-14-4315-2022, https://doi.org/10.5194/essd-14-4315-2022, 2022
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The term
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M. A. Soppa, D. A. Dinh, B. Silva, F. Steinmetz, L. Alvarado, and A. Bracher
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVI-1-W1-2021, 69–72, https://doi.org/10.5194/isprs-archives-XLVI-1-W1-2021-69-2022, https://doi.org/10.5194/isprs-archives-XLVI-1-W1-2021-69-2022, 2022
Yanan Zhao, Dennis Booge, Christa A. Marandino, Cathleen Schlundt, Astrid Bracher, Elliot L. Atlas, Jonathan Williams, and Hermann W. Bange
Biogeosciences, 19, 701–714, https://doi.org/10.5194/bg-19-701-2022, https://doi.org/10.5194/bg-19-701-2022, 2022
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We present here, for the first time, simultaneously measured dimethylsulfide (DMS) seawater concentrations and DMS atmospheric mole fractions from the Peruvian upwelling region during two cruises in December 2012 and October 2015. Our results indicate low oceanic DMS concentrations and atmospheric DMS molar fractions in surface waters and the atmosphere, respectively. In addition, the Peruvian upwelling region was identified as an insignificant source of DMS emissions during both periods.
Cora Hörstmann, Eric J. Raes, Pier Luigi Buttigieg, Claire Lo Monaco, Uwe John, and Anya M. Waite
Biogeosciences, 18, 3733–3749, https://doi.org/10.5194/bg-18-3733-2021, https://doi.org/10.5194/bg-18-3733-2021, 2021
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Microbes are the main drivers of productivity and nutrient cycling in the ocean. We present a combined approach assessing C and N uptake and microbial community diversity across ecological provinces in the Southern Ocean and southern Indian Ocean. Provinces showed distinct genetic fingerprints, but microbial activity varied gradually across regions, correlating with nutrient concentrations. Our study advances the biogeographic understanding of microbial diversity across C and N uptake regimes.
Claudia Wekerle, Tore Hattermann, Qiang Wang, Laura Crews, Wilken-Jon von Appen, and Sergey Danilov
Ocean Sci., 16, 1225–1246, https://doi.org/10.5194/os-16-1225-2020, https://doi.org/10.5194/os-16-1225-2020, 2020
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The high-resolution ocean models ROMS and FESOM configured for the Fram Strait reveal very energetic ocean conditions there. The two main currents meander strongly and shed circular currents of water, called eddies. Our analysis shows that this region is characterised by small and short-lived eddies (on average around a 5 km radius and 10 d lifetime). Both models agree on eddy properties and show similar patterns of baroclinic and barotropic instability of the West Spitsbergen Current.
Sinikka T. Lennartz, Marc von Hobe, Dennis Booge, Henry C. Bittig, Tim Fischer, Rafael Gonçalves-Araujo, Kerstin B. Ksionzek, Boris P. Koch, Astrid Bracher, Rüdiger Röttgers, Birgit Quack, and Christa A. Marandino
Ocean Sci., 15, 1071–1090, https://doi.org/10.5194/os-15-1071-2019, https://doi.org/10.5194/os-15-1071-2019, 2019
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The ocean emits the gases carbonyl sulfide (OCS) and carbon disulfide (CS2), which affect our climate. The goal of this study was to quantify the rates at which both gases are produced in the eastern tropical South Pacific (ETSP), one of the most productive oceanic regions worldwide. Both gases are produced by reactions triggered by sunlight, but we found that the amount produced depends on different factors. Our results improve numerical models to predict oceanic concentrations of both gases.
Svetlana N. Losa, Stephanie Dutkiewicz, Martin Losch, Julia Oelker, Mariana A. Soppa, Scarlett Trimborn, Hongyan Xi, and Astrid Bracher
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-289, https://doi.org/10.5194/bg-2019-289, 2019
Manuscript not accepted for further review
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This study highlights recent advances and challenges of applying coupled physical-biogeochemical modeling for investigating the distribution of the key phytoplankton groups in the Southern Ocean. By leveraging satellite and in situ observations we define numerical ecological model requirements in the phytoplankton trait specification and level of physiological and morphological differentiation for capturing and explaining the observed biogeography of diatoms, coccolithophores and Phaeocystis.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Malcolm Taberner, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Elisabetta Canuti, Francisco Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Richard Gould, Stanford B. Hooker, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Hubert Loisel, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Frank Muller-Karger, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Simon Wright, and Giuseppe Zibordi
Earth Syst. Sci. Data, 11, 1037–1068, https://doi.org/10.5194/essd-11-1037-2019, https://doi.org/10.5194/essd-11-1037-2019, 2019
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A compiled set of in situ data is useful to evaluate the quality of ocean-colour satellite data records. Here we describe the compilation of global bio-optical in situ data (spanning from 1997 to 2018) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
Maren Elisabeth Richter, Wilken-Jon von Appen, and Claudia Wekerle
Ocean Sci., 14, 1147–1165, https://doi.org/10.5194/os-14-1147-2018, https://doi.org/10.5194/os-14-1147-2018, 2018
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In the Fram Strait, Arctic Ocean outflow is joined by Atlantic Water (AW) that has not flowed through the Arctic Ocean. The confluence creates a density gradient which steepens and draws closer to the east Greenland shelf break from N to S. This brings the warm AW closer to the shelf break. South of 79° N, AW has reached the shelf break and the East Greenland Current has formed. When AW reaches the Greenland shelf it may propagate through troughs to glacier termini and contribute to glacier melt.
Dennis Booge, Cathleen Schlundt, Astrid Bracher, Sonja Endres, Birthe Zäncker, and Christa A. Marandino
Biogeosciences, 15, 649–667, https://doi.org/10.5194/bg-15-649-2018, https://doi.org/10.5194/bg-15-649-2018, 2018
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Our isoprene data from field measurements in the mixed layer from the Indian Ocean and the eastern Pacific Ocean show that the ability of different phytoplankton functional types to produce isoprene seems to be mainly influenced by light, ocean temperature, salinity, and nutrients. By calculating in-field isoprene production rates, we demonstrate that an additional loss is needed to explain the measured isoprene concentration, which is potentially due to degradation or consumption by bacteria.
Cathleen Schlundt, Susann Tegtmeier, Sinikka T. Lennartz, Astrid Bracher, Wee Cheah, Kirstin Krüger, Birgit Quack, and Christa A. Marandino
Atmos. Chem. Phys., 17, 10837–10854, https://doi.org/10.5194/acp-17-10837-2017, https://doi.org/10.5194/acp-17-10837-2017, 2017
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For the first time, oxygenated volatile organic carbon (OVOC) in the ocean and overlaying atmosphere in the western Pacific Ocean has been measured. OVOCs are important for atmospheric chemistry. They are involved in ozone production in the upper troposphere (UT), and they have a climate cooling effect. We showed that phytoplankton was an important source for OVOCs in the surface ocean, and when OVOCs are emitted into the atmosphere, they could reach the UT and might influence ozone formation.
Amelie Driemel, Eberhard Fahrbach, Gerd Rohardt, Agnieszka Beszczynska-Möller, Antje Boetius, Gereon Budéus, Boris Cisewski, Ralph Engbrodt, Steffen Gauger, Walter Geibert, Patrizia Geprägs, Dieter Gerdes, Rainer Gersonde, Arnold L. Gordon, Hannes Grobe, Hartmut H. Hellmer, Enrique Isla, Stanley S. Jacobs, Markus Janout, Wilfried Jokat, Michael Klages, Gerhard Kuhn, Jens Meincke, Sven Ober, Svein Østerhus, Ray G. Peterson, Benjamin Rabe, Bert Rudels, Ursula Schauer, Michael Schröder, Stefanie Schumacher, Rainer Sieger, Jüri Sildam, Thomas Soltwedel, Elena Stangeew, Manfred Stein, Volker H Strass, Jörn Thiede, Sandra Tippenhauer, Cornelis Veth, Wilken-Jon von Appen, Marie-France Weirig, Andreas Wisotzki, Dieter A. Wolf-Gladrow, and Torsten Kanzow
Earth Syst. Sci. Data, 9, 211–220, https://doi.org/10.5194/essd-9-211-2017, https://doi.org/10.5194/essd-9-211-2017, 2017
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Our oceans are always in motion – huge water masses are circulated by winds and by global seawater density gradients resulting from different water temperatures and salinities. Measuring temperature and salinity of the world's oceans is crucial e.g. to understand our climate. Since 1983, the research icebreaker Polarstern has been the basis of numerous water profile measurements in the Arctic and the Antarctic. We report on a unique collection of 33 years of polar salinity and temperature data.
Sinikka T. Lennartz, Christa A. Marandino, Marc von Hobe, Pau Cortes, Birgit Quack, Rafel Simo, Dennis Booge, Andrea Pozzer, Tobias Steinhoff, Damian L. Arevalo-Martinez, Corinna Kloss, Astrid Bracher, Rüdiger Röttgers, Elliot Atlas, and Kirstin Krüger
Atmos. Chem. Phys., 17, 385–402, https://doi.org/10.5194/acp-17-385-2017, https://doi.org/10.5194/acp-17-385-2017, 2017
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We present new sea surface and marine boundary layer measurements of carbonyl sulfide, the most abundant sulfur gas in the atmosphere, and calculate an oceanic emission estimate. Our results imply that oceanic emissions are very unlikely to account for the missing source in the atmospheric budget that is currently discussed for OCS.
Helmke Hepach, Birgit Quack, Susann Tegtmeier, Anja Engel, Astrid Bracher, Steffen Fuhlbrügge, Luisa Galgani, Elliot L. Atlas, Johannes Lampel, Udo Frieß, and Kirstin Krüger
Atmos. Chem. Phys., 16, 12219–12237, https://doi.org/10.5194/acp-16-12219-2016, https://doi.org/10.5194/acp-16-12219-2016, 2016
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We present surface seawater measurements of bromo- and iodocarbons, which are involved in numerous atmospheric processes such as tropospheric and stratospheric ozone chemistry, from the highly productive Peruvian upwelling. By combining trace gas measurements, characterization of organic matter and phytoplankton species, and tropospheric modelling, we show that large amounts of iodocarbons produced from the pool of organic matter may contribute strongly to local tropospheric iodine loading.
Dennis Booge, Christa A. Marandino, Cathleen Schlundt, Paul I. Palmer, Michael Schlundt, Elliot L. Atlas, Astrid Bracher, Eric S. Saltzman, and Douglas W. R. Wallace
Atmos. Chem. Phys., 16, 11807–11821, https://doi.org/10.5194/acp-16-11807-2016, https://doi.org/10.5194/acp-16-11807-2016, 2016
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Isoprene, a biogenic trace gas, is an important precursor of secondary organic aerosol/cloud condensation nuclei. Here, we use isoprene and related field measurements from three different ocean data sets together with remotely sensed satellite data to model global marine isoprene emissions. Our findings suggest that there is at least one missing oceanic source of isoprene and possibly other unknown factors in the ocean or atmosphere influencing the atmospheric values.
Tim Stöven, Toste Tanhua, Mario Hoppema, and Wilken-Jon von Appen
Ocean Sci., 12, 319–333, https://doi.org/10.5194/os-12-319-2016, https://doi.org/10.5194/os-12-319-2016, 2016
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The article describes transient tracer distributions of CFC-12 and SF6 in the Fram Strait in 2012. The SF6 excess and the anthropogenic carbon content in this area was estimated assuming a standard parameterization of the inverse-Gaussian–transit-time distribution. Hydrographic data were obtained along a mooring array at 78°50’N and a mean velocity field was used for flux estimates.
K. A. Reeve, O. Boebel, T. Kanzow, V. Strass, G. Rohardt, and E. Fahrbach
Earth Syst. Sci. Data, 8, 15–40, https://doi.org/10.5194/essd-8-15-2016, https://doi.org/10.5194/essd-8-15-2016, 2016
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We present spatially gridded, time-composite mapped data of temperature and salinity of the upper 2000m of the Weddell Gyre through the objective mapping of Argo float data. This was realized on fixed-pressure surfaces ranging from 50 to 2000 dbar. Pressure, temperature and salinity are also available at the level of the sub-surface temperature maximum, which represents the core of Warm Deep Water, the primary heat source of the Weddell Gyre. A detailed description of the methods is provided.
H. Hepach, B. Quack, S. Raimund, T. Fischer, E. L. Atlas, and A. Bracher
Biogeosciences, 12, 6369–6387, https://doi.org/10.5194/bg-12-6369-2015, https://doi.org/10.5194/bg-12-6369-2015, 2015
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This manuscript covers the first measurements of CHBr3, CH2Br2 and CH3I from the equatorial Atlantic during the Cold Tongue season, identifying this region and season as a source for these compounds. For the first time, we calculated diapycnal fluxes, and showed that the fluxes from below the mixed layer to the surface are not sufficient to balance the mixed layer budget. Hence, we conclude that mixed layer production has to take place despite a pronounced sub-mixed-layer-maximum.
T. Dinter, V. V. Rozanov, J. P. Burrows, and A. Bracher
Ocean Sci., 11, 373–389, https://doi.org/10.5194/os-11-373-2015, https://doi.org/10.5194/os-11-373-2015, 2015
A. Bracher, M. H. Taylor, B. Taylor, T. Dinter, R. Röttgers, and F. Steinmetz
Ocean Sci., 11, 139–158, https://doi.org/10.5194/os-11-139-2015, https://doi.org/10.5194/os-11-139-2015, 2015
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We have developed a method to assess pigment concentrations from continuous optical measurements by applying an empirical orthogonal function analysis to remote-sensing reflectance data derived from hyperspectral ship-based and multispectral satellite measurements in the Atlantic Ocean. The method allows for the derivation of time series from continuous reflectance data of various pigment groups at various regions, which can be used to study phytoplankton composition and photophysiology.
W. Cheah, B. B. Taylor, S. Wiegmann, S. Raimund, G. Krahmann, B. Quack, and A. Bracher
Biogeosciences Discuss., https://doi.org/10.5194/bgd-10-12115-2013, https://doi.org/10.5194/bgd-10-12115-2013, 2013
Revised manuscript not accepted
G. Wetzel, H. Oelhaf, G. Berthet, A. Bracher, C. Cornacchia, D. G. Feist, H. Fischer, A. Fix, M. Iarlori, A. Kleinert, A. Lengel, M. Milz, L. Mona, S. C. Müller, J. Ovarlez, G. Pappalardo, C. Piccolo, P. Raspollini, J.-B. Renard, V. Rizi, S. Rohs, C. Schiller, G. Stiller, M. Weber, and G. Zhang
Atmos. Chem. Phys., 13, 5791–5811, https://doi.org/10.5194/acp-13-5791-2013, https://doi.org/10.5194/acp-13-5791-2013, 2013
C. Zindler, A. Bracher, C. A. Marandino, B. Taylor, E. Torrecilla, A. Kock, and H. W. Bange
Biogeosciences, 10, 3297–3311, https://doi.org/10.5194/bg-10-3297-2013, https://doi.org/10.5194/bg-10-3297-2013, 2013
A. Cherkasheva, E.-M. Nöthig, E. Bauerfeind, C. Melsheimer, and A. Bracher
Ocean Sci., 9, 431–445, https://doi.org/10.5194/os-9-431-2013, https://doi.org/10.5194/os-9-431-2013, 2013
Related subject area
Approach: In situ Observations | Depth range: All Depths | Geographical range: Deep Seas: North Atlantic | Phenomena: Temperature, Salinity and Density Fields
IEOOS: the Spanish Institute of Oceanography Observing System
Distribution of intermediate water masses in the subtropical northeast Atlantic
Temperature–salinity distribution in the northeastern Atlantic from ship and Argo vertical casts
Seasonality of intermediate waters hydrography west of the Iberian Peninsula from an 8 yr semiannual time series of an oceanographic section
Surface expression of Mediterranean Water dipoles and their contribution to the shelf/slope – open ocean exchange
Adjustment of the basin-scale circulation at 26° N to variations in Gulf Stream, deep western boundary current and Ekman transports as observed by the Rapid array
Elena Tel, Rosa Balbin, Jose-Manuel Cabanas, Maria-Jesus Garcia, M. Carmen Garcia-Martinez, Cesar Gonzalez-Pola, Alicia Lavin, Jose-Luis Lopez-Jurado, Carmen Rodriguez, Manuel Ruiz-Villarreal, Ricardo F. Sánchez-Leal, Manuel Vargas-Yáñez, and Pedro Vélez-Belchí
Ocean Sci., 12, 345–353, https://doi.org/10.5194/os-12-345-2016, https://doi.org/10.5194/os-12-345-2016, 2016
Short summary
Short summary
The Spanish Institute of Oceanography supports different operational programmes in order to observe and measure ocean characteristics. Their combination allows responses to ocean research activities and marine ecosystem management, as well as official agency requirements and industrial and main society demands. All these networks are linked to international initiatives, framed largely in supranational Earth observation sponsored by the United Nations and the European Union.
I. Bashmachnikov, Â. Nascimento, F. Neves, T. Menezes, and N. V. Koldunov
Ocean Sci., 11, 803–827, https://doi.org/10.5194/os-11-803-2015, https://doi.org/10.5194/os-11-803-2015, 2015
I. Bashmachnikov, F. Neves, Â. Nascimento, J. Medeiros, I. Ambar, J. Dias, and X. Carton
Ocean Sci., 11, 215–236, https://doi.org/10.5194/os-11-215-2015, https://doi.org/10.5194/os-11-215-2015, 2015
Short summary
Short summary
The present study defines new interpolation functions for hydrological data. These functions are applied to generate climatological maps of temperature-salinity distribution with a 25m depth interval and a 30km space interval (MEDTRANS data set). The MEDTRANS climatology gives more details of the distribution of water characteristics in the subtropical northeastern Atlantic than other alternative climatologies and is able to reproduce a number of dynamic features described in the literature.
E. Prieto, C. González-Pola, A. Lavín, R. F. Sánchez, and M. Ruiz-Villarreal
Ocean Sci., 9, 411–429, https://doi.org/10.5194/os-9-411-2013, https://doi.org/10.5194/os-9-411-2013, 2013
N. Serra, I. Ambar, and D. Boutov
Ocean Sci., 6, 191–209, https://doi.org/10.5194/os-6-191-2010, https://doi.org/10.5194/os-6-191-2010, 2010
H. L. Bryden, A. Mujahid, S. A. Cunningham, and T. Kanzow
Ocean Sci., 5, 421–433, https://doi.org/10.5194/os-5-421-2009, https://doi.org/10.5194/os-5-421-2009, 2009
Cited articles
Aiken, J., Pradhan, Y., Barlow, R., Lavender, S., Poulton, A., Holligan, P.,
and Hardman-Mountford, N.: Phytoplankton pigments and functional types in
the Atlantic Ocean: a decadal assessment, 1995–2005, Deep-Sea Res. Pt.
II, 56, 899–917,
https://doi.org/10.1016/j.dsr2.2008.09.017, 2009. a
Bachmann, J., Heimbach, T., Hassenrück, C., Kopprio, G. A., Iversen, M. H.,
Grossart, H. P., and Gärdes, A.: Environmental drivers of free-living
vs. particle-attached bacterial community composition in the Mauritania
upwelling system, Front. Microbiol., 9, 1–13,
https://doi.org/10.3389/fmicb.2018.02836, 2018. a
Barlow, R., Cummings, D., and Gibb, S.: Improved resolution of mono-and
divinyl chlorophylls a and b and zeaxanthin and lutein in phytoplankton
extracts using reverse phase C-8 HPLC, Mar. Ecol.-Prog. Ser., 161,
303–307, https://doi.org/10.3354/meps161303, 1997. a
Bracher, A., Taylor, M. H., Taylor, B., Dinter, T., Röttgers, R., and Steinmetz, F.: Using empirical orthogonal functions derived from remote-sensing reflectance for the prediction of phytoplankton pigment concentrations, Ocean Sci., 11, 139–158, https://doi.org/10.5194/os-11-139-2015, 2015. a, b, c
Capet, X., McWilliams, J. C., Molemaker, M. J., and Shchepetkin, A.: Mesoscale
to submesoscale transition in the California Current System. Part I: Flow
structure, eddy flux, and observational tests, J. Phys.
Oceanogr., 38, 29–43, https://doi.org/10.1175/2007JPO3671.1, 2008a. a
Capet, X., McWilliams, J. C., Molemaker, M. J., and Shchepetkin, A.: Mesoscale
to submesoscale transition in the California Current System. Part II: Frontal
processes, J. Phys. Oceanogr., 38, 44–64,
https://doi.org/10.1175/2007JPO3672.1, 2008b. a
Chavez, F. P. and Messié, M.: A comparison of eastern boundary upwelling
ecosystems, Prog. Oceanogr., 83, 80–96,
https://doi.org/10.1016/j.pocean.2009.07.032, 2009. a
Chelton, D. B., Deszoeke, R. A., Schlax, M. G., El Naggar, K., and Siwertz, N.:
Geographical variability of the first baroclinic Rossby radius of
deformation, J. Phys. Oceanogr., 28, 433–460,
https://doi.org/10.1175/1520-0485(1998)028<0433:GVOTFB>2.0.CO;2, 1998. a, b
Cisewski, B. and Strass, V. H.: Acoustic insights into the zooplankton
dynamics of the eastern Weddell Sea, Prog. Oceanogr., 144, 62–92,
https://doi.org/10.1016/j.pocean.2016.03.005, 2016. a
Clark, D. R., Widdicombe, C. E., Rees, A. P., and Woodward, E. M. S.: The significance of nitrogen regeneration for new production within a filament of the Mauritanian upwelling system, Biogeosciences, 13, 2873–2888, https://doi.org/10.5194/bg-13-2873-2016, 2016. a
Copernicus: Copernicus Marine Environment Monitoring Service, available at: http://marine.copernicus.eu, last access: 25 February 2020. a
Deines, K. L.: Backscatter estimation using broadband acoustic Doppler current
profilers, in: Proceedings of the IEEE Sixth Working Conference on Current
Measurement (Cat. No. 99CH36331), 249–253, IEEE,
https://doi.org/10.1109/CCM.1999.755249, 1999. a
d'Ovidio, F., De Monte, S., Della Penna, A., Cotté, C., and Guinet, C.:
Ecological implications of eddy retention in the open ocean: a Lagrangian
approach, J. Phys. A, 46, 254023,
https://doi.org/10.1088/1751-8113/46/25/254023, 2013. a
ESA: ESA Climate Change Initiative, Ocean Colour CCI Version 4.2, available at: https://esa-oceancolour-cci.org, 25 February 2020. a
Falkowski, P. and Kolber, Z.: Variations in chlorophyll fluorescence yields in
phytoplankton in the world oceans, Funct. Plant Biol., 22, 341–355,
https://doi.org/10.1071/PP9950341, 1995. a
Grasshoff, K., Kremling, K., and Ehrhardt, M.: Methods of seawater analysis,
John Wiley & Sons, 2009. a
Haine, T. and Marshall, J.: Gravitational, Symmetric, and Baroclinic
Instability of the Ocean Mixed Layer, J. Phys. Oceanogr., 28,
634–658, https://doi.org/10.1175/1520-0485(1998)028<0634:GSABIO>2.0.CO;2, 1998. a
Hessner, K., El Naggar, S., von Appen, W.-J., and Strass, V. H.: On the
reliability of surface current measurements by X-band marine radar, Remote
Sens., 11, 1–18, https://doi.org/10.3390/rs11091030, 2019. a, b
Karstensen, J., Schütte, F., Pietri, A., Krahmann, G., Fiedler, B., Grundle, D., Hauss, H., Körtzinger, A., Löscher, C. R., Testor, P., Vieira, N., and Visbeck, M.: Upwelling and isolation in oxygen-depleted anticyclonic modewater eddies and implications for nitrate cycling, Biogeosciences, 14, 2167–2181, https://doi.org/10.5194/bg-14-2167-2017, 2017. a, b, c
Kunze, E., Schmitt, R. W., and Toole, J. M.: The energy balance in a warm-core
ring's near-inertial critical layer, J. Phys. Oceanogr., 25,
942–957, https://doi.org/10.1175/1520-0485(1995)025<0942:TEBIAW>2.0.CO;2, 1995. a
Leach, H., Hörstmann, C., and Strass, V. H.: Physical-biogeochemical
Atlantic transect from the southern to the northern hemisphere, Ocean
Sci., in preparation, 2020. a
Lee, D.-K. and Niiler, P. P.: The inertial chimney: The near-inertial energy
drainage from the ocean surface to the deep layer, J. Geophys.
Res.-Oceans, 103, 7579–7591, https://doi.org/10.1029/97JC03200, 1998. a
Lévy, M., Klein, P., and Treguier, A.-M.: Impact of sub-mesoscale physics
on production and subduction of phytoplankton in an oligotrophic regime,
J. Mar. Res., 59, 535–565, https://doi.org/10.1357/002224001762842181,
2001. a
Lévy, M., Ferrari, R., Franks, P. J., Martin, A. P., and Rivière, P.:
Bringing physics to life at the submesoscale, Geophys. Res. Lett.,
39, 1–13, https://doi.org/10.1029/2012GL052756, 2012. a
Losa, S. N., Soppa, M. A., Dinter, T., Wolanin, A., Brewin, R. J., Bricaud, A.,
Oelker, J., Peeken, I., Gentili, B., Rozanov, V., and Bracher, A.: Synergistic
Exploitation of Hyper-and Multi-Spectral Precursor Sentinel Measurements to
Determine Phytoplankton Functional Types (SynSenPFT), Front. Mar.
Sci., 4, 1–22, https://doi.org/10.3389/fmars.2017.00203, 2017. a
Mahadevan, A.: The Impact of Submesoscale Physics on Primary Productivity of
Plankton, Annu. Rev. Mar. Sci., 8, 161–184,
https://doi.org/10.1146/annurev-marine-010814-015912, 2016. a
Mahadevan, A., D'Asaro, E., Lee, C., and Perry, M. J.: Eddy-driven
stratification initiates North Atlantic spring phytoplankton blooms,
Science, 337, 54–58, https://doi.org/10.1126/science.1218740, 2012. a
Martínez-Marrero, A., Rodríguez-Santana, A., Hernández-Guerra,
A., Fraile-Nuez, E., López-Laatzen, F., Vélez-Belchí, P., and
Parrilla, G.: Distribution of water masses and diapycnal mixing in the Cape
Verde Frontal Zone, Geophys. Res. Lett., 35,
1–5, https://doi.org/10.1029/2008GL033229, 2008. a, b
McWilliams, J. C.: Submesoscale, coherent vortices in the ocean, Rev.
Geophys., 23, 165–182, https://doi.org/10.1029/RG023i002p00165, 1985. a
Meunier, T., Barton, E. D., Barreiro, B., and Torres, R.: Upwelling filaments
off Cap Blanc: Interaction of the NW African upwelling current and the Cape
Verde frontal zone eddy field?, J. Geophys. Res.-Oceans,
117, 1–18, https://doi.org/10.1029/2012JC007905, 2012. a
Morel, A. and Prieur, L.: Analysis of variations in ocean color, Limnol. Oceanogr., 22, 709–722, https://doi.org/10.4319/lo.1977.22.4.0709, 1977. a
Mueller, J. L., Morel, A., Frouin, R., Davis, C., Arnone, R., Carder, K., Lee,
Z., Steward, R., Hooker, S., Mobley, C., McLean, S., Holben, B., Miller, M., Pietras, C., Knobelspiesse, K. D., Fargion, G. S., Porter, J., and Voss, K.: Ocean Optics Protocols For
Satellite Ocean Color Sensor Validation, Revision 4. Volume III: Radiometric
Measurements and Data Analysis Protocols, Tech. rep., NASA Goddard Space
Flight Space Center, https://doi.org/10.25607/OBP-62, 2003. a
NOAA: NOAA Physical Sciences Division, NOAA OI SST V2 High Resolution Dataset, available at: https://www.esrl.noaa.gov/psd/data/gridded/data.noaa.oisst.v2.highres.html, last access: 25 February 2020. a
Reynolds, R. W., Smith, T. M., Liu, C., Chelton, D. B., Casey, K. S., and
Schlax, M. G.: Daily high-resolution-blended analyses for sea surface
temperature, J. Climate, 20, 5473–5496,
https://doi.org/10.1175/2007JCLI1824.1, 2007. a
Rohardt, G.: General processing report of continuous thermosalinograph
oceanography from RV POLARSTERN cruises: PS110, PS111, PS113, PS112
(20.12.2017–10.06.2018), Tech. rep., Alfred Wegener Institute,
https://doi.org/10013/epic.cb82831d-77a6-4176-a889-7eacd79e4b4f, 2018. a
Sathyendranath, S., Grant, M., Brewin, R., Brockmann, C., Brotas, V., Chuprin, A., Doerffer, R., Dowell, M., Farman, A., Groom, S., Jackson, T., Krasemann, H., Lavender, S., Vicente, V., Mazeran, C., Mélin, F., Moore, T., Müller, D., Platt, T., Regner, P., Roy, S., Steinmetz, F., Swinton, J., Valente, A., Zühlke, M., Antoine, D., Arnone, R., Balch, W., Barker, K., Barlow, R., Bélanger, S., Berthon, J.-F., Beşiktepe, Ş., Brando, V., Canuti, E., Chavez, F., Claustre, H., Crout, R., Feldman, G., Franz, B., Frouin, R., García-Soto, C., Gibb, S., Gould, R., Hooker, S., Kahru, M., Klein, H., Kratzer, S., Loisel, H., McKee,D ., Mitchell, B., Moisan, T., Muller-Karger, F., O'Dowd, L., Ondrusek, M., Poulton, A., Repecaud, M., Smyth, T., Sosik, H., Taberner, M., Twardowski, M., Voss, K., Werdell, J., Wernand, M., and Zibordi, G.: ESA Ocean Colour Climate
Change Initiative (Ocean_Colour_cci): Version 3.1 Data. Centre for
Environmental Data Analysis, https://doi.org/10.5285/9c334fbe6d424a708cf3c4cf0c6a53f5,
2018. a
Schütte, F., Brandt, P., and Karstensen, J.: Occurrence and characteristics of mesoscale eddies in the tropical northeastern Atlantic Ocean, Ocean Sci., 12, 663–685, https://doi.org/10.5194/os-12-663-2016, 2016. a
Smith, W. and Wessel, P.: Gridding with continuous curvature splines in
tension, Geophysics, 55, 293–305, https://doi.org/10.1190/1.1442837, 1990. a
Stramski, D., Reynolds, R. A., Babin, M., Kaczmarek, S., Lewis, M. R., Röttgers, R., Sciandra, A., Stramska, M., Twardowski, M. S., Franz, B. A., and Claustre, H.: Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans, Biogeosciences, 5, 171–201, https://doi.org/10.5194/bg-5-171-2008, 2008. a
Strass, V. H.: Chlorophyll patchiness caused by mesoscale upwelling at
fronts, Deep-Sea Res. Pt. I, 39, 75–96,
https://doi.org/10.1016/0198-0149(92)90021-K, 1992. a
Strass, V. H.: The Expedition PS113 of the Research Vessel POLARSTERN to the
Atlantic Ocean in 2018, Berichte zur Polar-und Meeresforschung (Reports on
Polar and Marine Research), https://doi.org/10.2312/BzPM_0724_2018, 2018. a
Strass, V. H.: Physical oceanography during POLARSTERN cruise PS113, PANGAEA,
https://doi.org/10.1594/PANGAEA.898716, 2019. a, b
Strass, V. H. and Rohardt, G.: Continuous thermosalinograph oceanography along
POLARSTERN cruise track PS113 (ANT-XXXIII/4), PANGAEA,
https://doi.org/10.1594/PANGAEA.895581, 2019. a, b
Taylor, B. B., Torrecilla, E., Bernhardt, A., Taylor, M. H., Peeken, I., Röttgers, R., Piera, J., and Bracher, A.: Bio-optical provinces in the eastern Atlantic Ocean and their biogeographical relevance, Biogeosciences, 8, 3609–3629, https://doi.org/10.5194/bg-8-3609-2011, 2011. a, b, c, d
Thomas, H.: Remineralization ratios of carbon, nutrients, and oxygen in the
North Atlantic Ocean: A field databased assessment, Global Biogeochem.
Cy., 16, 1–12, https://doi.org/10.1029/2001GB001452, 2002. a, b
Thomas, L. N.: Destruction of potential vorticity by winds, J.
Phys. Oceanogr., 35, 2457–2466, https://doi.org/10.1175/JPO2830.1, 2005. a
Thomas, L. N.: Formation of intrathermocline eddies at ocean fronts by
wind-driven destruction of potential vorticity, Dynam. Atmos.
Oceans, 45, 252–273, https://doi.org/10.1016/j.dynatmoce.2008.02.002, 2008. a
Tomczak, M.: An analysis of mixing in the frontal zone of South and North
Atlantic Central Water off North-West Africa, Prog. Oceanogr., 10,
173–192, https://doi.org/10.1016/0079-6611(81)90011-2, 1981.
a, b, c, d
Vélez-Belchí, P., Allen, J., and Strass, V. H.: A new way to look at
mesoscale zooplankton distributions: an application at the Antarctic Polar
Front, Deep-Sea Res. Pt. II, 49, 3917–3929, https://doi.org/10.1016/S0967-0645(02)00117-0, 2002. a
Vidussi, F., Claustre, H., Manca, B. B., Luchetta, A., and Marty, J.-C.:
Phytoplankton pigment distribution in relation to upper thermocline
circulation in the eastern Mediterranean Sea during winter, J.
Geophys. Res.-Oceans, 106, 19939–19956,
https://doi.org/10.1029/1999JC000308, 2001. a
von Appen, W.-J., Wekerle, C., Hehemann, L., Schourup-Kristensen, V., Konrad,
C., and Iversen, M.: Observations of a submesoscale cyclonic filament in the
marginal ice zone, Geophys. Res. Lett., 1–9, https://doi.org/10.1029/2018GL077897,
2018. a
von Appen, W.-J., Strass, V., Becker, H., Bracher, A., and Spahic, S.: Raw
data from Triaxus topAWI tows during POLARSTERN cruise PS113, PANGAEA,
https://doi.org/10.1594/PANGAEA.904420, 2019. a, b
Waite, A. M., Beckley, L. E., Guidi, L., Landrum, J. P., Holliday, D., Montoya,
J., Paterson, H., Feng, M., Thompson, P. A., and Raes, E. J.: Cross-shelf
transport, oxygen depletion, and nitrate release within a forming mesoscale
eddy in the eastern Indian Ocean, Limnol. Oceanogr.,
103–121, https://doi.org/10.1002/lno.10218, 2015. a, b
Waite, A. M., Stemmann, L., Guidi, L., Calil, P. H., Hogg, A. M. C., Feng, M.,
Thompson, P. A., Picheral, M., and Gorsky, G.: The wineglass effect shapes
particle export to the deep ocean in mesoscale eddies, Geophys. Res.
Lett., 43, 9791–9800, https://doi.org/10.1002/2015GL066463, 2016. a, b
Witte, H.: Raw data of continuous VM-ADCP (vessel-mounted Acoustic Doppler
Current Profiler) profile during POLARSTERN cruise PS113, PANGAEA,
https://doi.org/10.1594/PANGAEA.897092, 2019. a, b
Short summary
Nutrient-rich water is moved to the surface near continental margins. Then it forms rich but difficult to observe spatial structures of physical and biological/biogeochemical properties. Here we present a high resolution (2.5 km) section through such features obtained in May 2018 with a vehicle towed behind a ship. Considering that such interactions of physics and biology are common in the ocean, they likely strongly influence the productivity of such systems and their role in CO2 uptake.
Nutrient-rich water is moved to the surface near continental margins. Then it forms rich but...
