Search Results - "Körtzinger, A."

Calcifying invertebrates succeed in a naturally CO2-rich coastal habitat but are threatened by high levels of future acidification by Thomsen, J, Gutowska, M A, Saphörster, J, Heinemann, A, Trübenbach, K, Fietzke, J, Hiebenthal, C, Eisenhauer, A, Körtzinger, A, Wahl, M, Melzner, F

“…CO2 emissions are leading to an acidification of the oceans. Predicting marine community vulnerability towards acidification is difficult, as adaptation…”
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On the role of circulation and mixing in the ventilation of oxygen minimum zones with a focus on the eastern tropical North Atlantic by Brandt, P, Bange, H. W, Banyte, D, Dengler, M, Didwischus, S.-H, Fischer, T, Greatbatch, R. J, Hahn, J, Kanzow, T, Karstensen, J, Körtzinger, A, Krahmann, G, Schmidtko, S, Stramma, L, Tanhua, T, Visbeck, M

“…Ocean observations are analysed in the framework of Collaborative Research Center 754 (SFB 754) "Climate-Biogeochemistry Interactions in the Tropical Ocean" to…”
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Open ocean dead zones in the tropical North Atlantic Ocean by Karstensen, J, Fiedler, B, Schütte, F, Brandt, P, Körtzinger, A, Fischer, G, Zantopp, R, Hahn, J, Visbeck, M, Wallace, D

“…Here we present first observations, from instrumentation installed on moorings and a float, of unexpectedly low (<2 μmol kg−1) oxygen environments in the open…”
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In situ observations show vertical community structure of pelagic fauna in the eastern tropical North Atlantic off Cape Verde by Hoving, H. J. T., Neitzel, P., Hauss, H., Christiansen, S., Kiko, R., Robison, B. H., Silva, P., Körtzinger, A.

“…Distribution patterns of fragile gelatinous fauna in the open ocean remain scarcely documented. Using epi-and mesopelagic video transects in the eastern…”
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High anthropogenic carbon content in the eastern Mediterranean by Schneider, A., Tanhua, T., Körtzinger, A., Wallace, D. W. R.

“…This work presents data of dichlorodifluoromethane (CFC‐12), dissolved inorganic carbon and total alkalinity from a cruise to the Mediterranean Sea during…”
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Oxygen variance and meridional oxygen supply in the Tropical North East Atlantic oxygen minimum zone by Hahn, J, Brandt, P, Greatbatch, R. J, Krahmann, G, Körtzinger, A

“…The distribution of the mean oceanic oxygen concentration results from a balance between ventilation and consumption. In the eastern tropical Pacific and…”
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Low oxygen eddies in the eastern tropical North Atlantic: Implications for N2O cycling by Grundle, D. S., Löscher, C. R., Krahmann, G., Altabet, M. A., Bange, H. W., Karstensen, J., Körtzinger, A., Fiedler, B.

“…Nitrous oxide (N 2 O) is a climate relevant trace gas, and its production in the ocean generally increases under suboxic conditions. The Atlantic Ocean is well…”
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N2O Emissions From the Northern Benguela Upwelling System by Arévalo‐Martínez, D. L., Steinhoff, T., Brandt, P., Körtzinger, A., Lamont, T., Rehder, G., Bange, H. W.

“…The Benguela Upwelling System (BUS) is the most productive of all eastern boundary upwelling ecosystems and it hosts a well‐developed oxygen minimum zone. As…”
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Air-sea gas transfer velocity for oxygen derived from float data by Kihm, C., Körtzinger, A.

“…We estimated the air‐sea gas transfer velocity for oxygen using 3 consecutive years (September 2003 to August 2006) of high‐quality oxygen measurements from…”
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Global carbon budget 2013 by Le Quéré, C, Peters, G. P, Andres, R. J, Andrew, R. M, Boden, T. A, Ciais, P, Friedlingstein, P, Houghton, R. A, Marland, G, Moriarty, R, Sitch, S, Tans, P, Arneth, A, Arvanitis, A, Bakker, D. C. E, Bopp, L, Canadell, J. G, Chini, L. P, Doney, S. C, Harper, A, Harris, I, House, J. I, Jain, A. K, Jones, S. D, Kato, E, Keeling, R. F, Klein Goldewijk, K, Körtzinger, A, Koven, C, Lefèvre, N, Maignan, F, Omar, A, Ono, T, Park, G.-H, Pfeil, B, Poulter, B, Raupach, M. R, Regnier, P, Rödenbeck, C, Saito, S, Schwinger, J, Segschneider, J, Stocker, B. D, Takahashi, T, Tilbrook, B, van Heuven, S, Viovy, N, Wanninkhof, R, Wiltshire, A, Zaehle, S

“…Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is…”
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Hidden biosphere in an oxygen-deficient Atlantic open-ocean eddy: future implications of ocean deoxygenation on primary production in the eastern tropical North Atlantic by Löscher, C. R, Fischer, M. A, Neulinger, S. C, Fiedler, B, Philippi, M, Schütte, F, Singh, A, Hauss, H, Karstensen, J, Körtzinger, A, Künzel, S, Schmitz, R. A

“…The eastern tropical North Atlantic (ETNA) is characterized by a highly productive coastal upwelling system and a moderate oxygen minimum zone with lowest…”
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The salinity normalization of marine inorganic carbon chemistry data by Friis, K., Körtzinger, A., Wallace, D. W. R.

“…Normalization to a constant salinity (S) is widely used for the adjustment of marine inorganic carbon chemistry data such as total alkalinity (AT) and total…”
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On the temporal increase of anthropogenic CO2 in the subpolar North Atlantic by FRIIS, K, KÖRTZINGER, A, PÄTSCH, J, WALLACE, D. W. R

“…The subpolar North Atlantic (NA) plays a key role in the oceanic uptake of anthropogenic CO2. The availability of a historical high quality data set from the…”
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The seasonal pCO2 cycle at 49°N/16.5°W in the northeastern Atlantic Ocean and what it tells us about biological productivity by Körtzinger, A., Send, U., Lampitt, R. S., Hartman, S., Wallace, D. W. R., Karstensen, J., Villagarcia, M. G., Llinás, O., DeGrandpre, M. D.

“…A 2‐year record of mixed layer measurements of CO2 partial pressure (pCO2), nitrate, and other physical, chemical, and biological parameters at a time series…”
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Author Correction: Low oxygen eddies in the eastern tropical North Atlantic: Implications for N2O cycling by Grundle, D. S., Löscher, C. R., Krahmann, G., Altabet, M. A., Bange, H. W., Karstensen, J., Körtzinger, A., Fiedler, B.

“…A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper…”
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Effects of Reversal of Water Flow in an Arctic Floodplain River on Fluvial Emissions of CO2 and CH4 by Castro‐Morales, K., Canning, A., Körtzinger, A., Göckede, M., Küsel, K., Overholt, W. A., Wichard, T., Redlich, S., Arzberger, S., Kolle, O., Zimov, N.

“…When organic matter from thawed permafrost is released, the sources and sinks of greenhouse gases (GHGs), like carbon dioxide (CO2) and methane (CH4) in Arctic…”
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Spectrophotometric high-precision seawater pH determination for use in underway measuring systems by Aßmann, S., Frank, C., Körtzinger, A.

“…Autonomous sensors are required for a comprehensive documentation of the changes in the marine carbon system and thus to differentiate between its natural…”
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A new method for continuous measurements of oceanic and atmospheric N2O, CO and CO2: performance of off-axis integrated cavity output spectroscopy (OA-ICOS) coupled to non-dispersive infrared detection (NDIR) by Arévalo-Martínez, D L, Beyer, M, Krumbholz, M, Piller, I, Kock, A, Steinhoff, T, Körtzinger, A, Bange, H W

“…A new system for continuous, highly resolved oceanic and atmospheric measurements of N2 O, CO and CO2 is described. The system is based upon off-axis…”
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An evaluation of tracer fields and anthropogenic carbon in the equatorial and the tropical North Atlantic by Schneider, A., Tanhua, T., Körtzinger, A., Wallace, D.W.R.

“…The transit time distribution method was applied to dichlorodifluoromethane and sulfur hexafluoride measurements from four cruises to the tropical North…”
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Computation of nitrate concentrations in turbid coastal waters using an in situ ultraviolet spectrophotometer by Zielinski, O., Voß, D., Saworski, B., Fiedler, B., Körtzinger, A.

“…In order to investigate biogeochemical cycling and dynamics of nutrients, measurement capabilities with sufficient spatial and temporal resolution are…”
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