Onur Karakuş

ORCID: 0000-0002-9838-3657
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About
Contact & Profiles
Research Areas
  • Methane Hydrates and Related Phenomena
  • Atmospheric and Environmental Gas Dynamics
  • Arctic and Antarctic ice dynamics
  • Marine and coastal ecosystems
  • Oceanographic and Atmospheric Processes
  • Ocean Acidification Effects and Responses
  • Geological Studies and Exploration
  • Marine Biology and Ecology Research
  • Microbial Community Ecology and Physiology
  • Arctic and Russian Policy Studies

Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2020-2025

Abstract The Arctic experiences climate changes that are among the fastest in world and affect all Earth system components. Despite expected increase terrigenous inputs to Ocean, their impacts on biogeochemical cycles currently largely neglected IPCC-like models. Here we used a state-of-the-art high-resolution ocean biogeochemistry model includes carbon nutrient from rivers coastal erosion produce twenty-first-century pan-Arctic projections. Surprisingly, even with an anticipated rise...

10.1038/s41558-024-02233-6 article EN cc-by Nature Climate Change 2025-01-06

Abstract Macrozooplankton and its grazing pressure shape ecosystem structures carbon pathways in the Southern Ocean. Here, we present implementation of “polar macrozooplankton” as a plankton functional type related fast‐sinking detritus class (fecal pellets) into biogeochemical model REcoM‐2. We use to assess major structure Ocean south 50°S. The represents zooplankton biomass spatial distribution reasonably well comparison available data. A distinct difference our from previous versions is...

10.1029/2021jc017315 article EN cc-by-nc-nd Journal of Geophysical Research Oceans 2021-11-05

Abstract Zooplankton plays a notable role in ocean biogeochemical cycles. However, it is often simulated as one generic group and top closure term models. This study presents the description of three zooplankton functional types (zPFTs, micro‐, meso‐ macrozooplankton) model FESOM‐REcoM. In presented model, microzooplankton fast‐growing herbivore group, mesozooplankton another major consumer phytoplankton, macrozooplankton slow‐growing with low temperature optimum. Meso‐ produce fast‐sinking...

10.1029/2022jg006798 article EN cc-by-nc-nd Journal of Geophysical Research Biogeosciences 2022-10-01

Abstract. The cycling of carbon in the oceans is affected by feedbacks driven changes climate and atmospheric CO2. Understanding these therefore an important prerequisite for projecting future climate. Marine biogeochemistry models are a useful tool but, as with any model, simplification need to be continually improved. In this study, we coupled Finite-volumE Sea ice–Ocean Model (FESOM2.1) Regulated Ecosystem version 3 (REcoM3). FESOM2.1 update Finite-Element (FESOM1.4) operates on...

10.5194/gmd-16-4883-2023 article EN cc-by Geoscientific model development 2023-08-30

Abstract. The cycling of carbon in the oceans is affected by feedbacks driven changes climate and atmospheric CO2. Understanding these therefore an important prerequisite for projecting future climate. Marine biogeochemical models are a useful tool there, but as any model simplification, need to be continually improved. In this study, we coupled Finite-volumE Sea ice-Ocean Model (FESOM2.1) Regulated Ecosystem version 3 (REcoM3). FESOM2.1 update Finite Element (FESOM1.4) operates on variable...

10.5194/gmd-2023-2 preprint EN cc-by 2023-01-23

Abstract The Arctic experiences climate changes that are among the fastest in world and affect all Earth system components. Despite expected increase terrigenous inputs to Ocean, their impacts on biogeochemical cycles currently largely neglected IPCC-like models. We used a state-of-the-art high-resolution ocean biogeochemistry model, includes carbon nutrient from rivers coastal erosion, produce twenty-first-century pan-Arctic projections. Surprisingly, even with an anticipated rise primary...

10.21203/rs.3.rs-3867146/v1 preprint EN cc-by Research Square (Research Square) 2024-02-21
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