Search Results - "KRIEST, Iris"

Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? by Guo, Haichao, Kriest, Iris, Oschlies, Andreas, Koeve, Wolfgang

“…Quantifying changes in oceanic aerobic respiration is essential for understanding marine deoxygenation. Here we use an Earth system model to investigate if and…”
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Using Shortened Spin‐Ups to Speed Up Ocean Biogeochemical Model Optimization by Oliver, S., Khatiwala, S., Cartis, C., Ward, Ben, Kriest, Iris

“…The performance of global ocean biogeochemical models can be quantified as the misfit between modeled tracer distributions and observations, which is sought to…”
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Diving deeper: Mesopelagic fish biomass estimates comparison using two different models by Hill Cruz, Mariana, Kriest, Iris, Getzlaff, Julia

“…A growing population on a planet with limited resources demands finding new sources of protein. Hence, fisheries are turning their perspectives towards…”
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Multiobjective Calibration of a Global Biogeochemical Ocean Model Against Nutrients, Oxygen, and Oxygen Minimum Zones by Sauerland, Volkmar, Kriest, Iris, Oschlies, Andreas, Srivastav, Anand

“…Global biogeochemical ocean models rely on many parameters, which govern the interaction between individual components, and their response to the physical…”
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A CMA‐ES Algorithm Allowing for Random Parameters in Model Calibration by Sauerland, Volkmar, Hallern, Claudine, Kriest, Iris, Getzlaff, Julia

“…In geoscience and other fields, researchers use models as a simplified representation of reality. The models include processes that often rely on uncertain…”
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Zooplankton-Mediated Fluxes in the Eastern Tropical North Atlantic by Kiko, Rainer, Brandt, Peter, Christiansen, Svenja, Faustmann, Jannik, Kriest, Iris, Rodrigues, Elizandro, Schütte, Florian, Hauss, Helena

“…Zooplankton organisms are a central part of pelagic ecosystems. They feed on all kinds of particulate matter and their egested fecal pellets contribute…”
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Calibrating a global three-dimensional biogeochemical ocean model (MOPS-1.0) by Kriest, Iris, Sauerland, Volkmar, Khatiwala, Samar, Srivastav, Anand, Oschlies, Andreas

“…Global biogeochemical ocean models contain a variety of different biogeochemical components and often much simplified representations of complex dynamical…”
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Impacts of Vertical Migrants on Biogeochemistry in an Earth System Model by Getzlaff, Julia, Kriest, Iris

“…Vertical migrants are a diverse group of organisms, which includes crustaceans, cephalopods and mesopelagic fishes. They play an active role in the…”
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Calibration of a simple and a complex model of global marine biogeochemistry by Kriest, Iris

“…The assessment of the ocean biota's role in climate change is often carried out with global biogeochemical ocean models that contain many components and…”
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Study the twilight zone before it is too late by Martin, Adrian, Boyd, Philip, Buesseler, Ken, Cetinic, Ivona, Claustre, Hervé, Giering, Sari, Henson, Stephanie, Irigoien, Xabier, Kriest, Iris, Memery, Laurent, Robinson, Carol, Saba, Grace, Sanders, Richard, Siegel, David, Alfageme, María Villa, Guidi, Lionel

“…[...]seafloor mining for minerals and metals could release waste into the region2. By contrast, the twilight zone is almost pristine. [...]the majority of it…”
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The oceans’ twilight zone must be studied now, before it is too late by Martin, Adrian, Boyd, Philip, Buesseler, Ken, Cetinic, Ivona, Claustre, Hervé, Giering, Sari, Henson, Stephanie, Irigoien, Xabier, Kriest, Iris, Memery, Laurent, Robinson, Carol, Saba, Grace, Sanders, Richard, Siegel, David, Villa-Alfageme, María, Guidi, Lionel

“…Exploitation and degradation of the mysterious layer between the sunlit ocean surface and the abyss jeopardize fish stocks and the climate. Exploitation and…”
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Understanding the drivers of fish variability in an end-to-end model of the Northern Humboldt Current System by Hill Cruz, Mariana, Frenger, Ivy, Getzlaff, Julia, Kriest, Iris, Xue, Tianfei, Shin, Yunne-Jai

“…The Northern Humboldt Current System is the most productive eastern boundary upwelling system, generating about 10 % of the global fish production, mainly…”
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The effect of marine aggregate parameterisations on nutrients and oxygen minimum zones in a global biogeochemical model by Niemeyer, Daniela, Kriest, Iris, Oschlies, Andreas

“…Particle aggregation determines the particle flux length scale and affects the marine oxygen concentration and thus the volume of oxygen minimum zones (OMZs)…”
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Southern Ocean biological impacts on global ocean oxygen by Keller, David P., Kriest, Iris, Koeve, Wolfgang, Oschlies, Andreas

“…Southern Ocean (SO) physical and biological processes are known to have a large impact on global biogeochemistry. However, the role that SO biology plays in…”
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Exploring the role of different data types and timescales in the quality of marine biogeochemical model calibration by Kriest, Iris, Getzlaff, Julia, Landolfi, Angela, Sauerland, Volkmar, Schartau, Markus, Oschlies, Andreas

“…Global biogeochemical ocean models help to investigate the present and potential future state of the ocean, its productivity and cascading effects on higher…”
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One size fits all? Calibrating an ocean biogeochemistry model for different circulations by Kriest, Iris, Kähler, Paul, Koeve, Wolfgang, Kvale, Karin, Sauerland, Volkmar, Oschlies, Andreas

“…Global biogeochemical ocean models are often tuned to match the observed distributions and fluxes of inorganic and organic quantities. This tuning is typically…”
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Reviews and syntheses: parameter identification in marine planktonic ecosystem modelling by Schartau, Markus, Wallhead, Philip, Hemmings, John, Löptien, Ulrike, Kriest, Iris, Krishna, Shubham, Ward, Ben A, Slawig, Thomas, Oschlies, Andreas

“…To describe the underlying processes involved in oceanic plankton dynamics is crucial for the determination of energy and mass flux through an ecosystem and…”
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A derivative-free optimisation method for global ocean biogeochemical models by Oliver, Sophy, Cartis, Coralia, Kriest, Iris, Tett, Simon F. B, Khatiwala, Samar

“…The skill of global ocean biogeochemical models, and the earth system models in which they are embedded, can be improved by systematic calibration of the…”
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Zooplankton mortality effects on the plankton community of the northern Humboldt Current System: sensitivity of a regional biogeochemical model by Hill Cruz, Mariana, Kriest, Iris, José, Yonss Saranga, Kiko, Rainer, Hauss, Helena, Oschlies, Andreas

“…Small pelagic fish off the coast of Peru in the eastern tropical South Pacific (ETSP) support around 10 % of global fish catches. Their stocks fluctuate…”
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On the treatment of particulate organic matter sinking in large-scale models of marine biogeochemical cycles by Kriest, I., Oschlies, A.

“…Various functions have been suggested and applied to represent the sedimentation and remineralisation of particulate organic matter (POM) in numerical ocean…”
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