A5043456533- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Climate variability and models
- Methane Hydrates and Related Phenomena
- Spectroscopy and Quantum Chemical Studies
- Carbon Dioxide Capture Technologies
- Oceanographic and Atmospheric Processes
- Groundwater and Isotope Geochemistry
- Marine Biology and Ecology Research
- Abdominal Trauma and Injuries
- Trauma and Emergency Care Studies
- Phase Equilibria and Thermodynamics
- Agriculture and Rural Development Research
- Isotope Analysis in Ecology
- Wind Energy Research and Development
- Climate change impacts on agriculture
- Fluid Dynamics and Vibration Analysis
- Plant Water Relations and Carbon Dynamics
- Geophysics and Gravity Measurements
- Paleontology and Stratigraphy of Fossils
- African Botany and Ecology Studies
- Geochemistry and Elemental Analysis
- Vibration and Dynamic Analysis
- Marine and environmental studies
GEOMAR Helmholtz Centre for Ocean Research Kiel
2017-2025
To reach climate neutrality, emission reduction must be complemented by carbon dioxide removal technologies aiming to sequester atmospheric CO2 and store it in permanent natural reservoirs. The ocean, which already sequesters roughly a quarter of all anthropogenic emissions annually, can play crucial role this effort. By storing forms that are not readily exchanged with the atmosphere, acts as vast long-lasting reservoir on human-relevant timeframe. This potential has spurred...
Abstract Carbon dioxide removal (CDR) is a crucial component of climate mitigation required to reach international targets. However, gaps exist in our understanding the responses and feedbacks Earth system deployment CDR. In this study, we compare two complementary approaches that enhance terrestrial marine carbon sinks with afforestation reforestation (A/R) ocean alkalinity enhancement (OAE), respectively, under high emission scenario SSP5-8.5. Eight CMIP6 models are utilized, enabling...
Abstract. Observations indicate an expansion of oxygen minimum zones (OMZs) over the past 50 years, likely related to ongoing deoxygenation caused by reduced solubility, changes in stratification and circulation, a potential acceleration organic matter turnover warming climate. The overall area ocean sediments that are direct contact with low-oxygen bottom waters also increases expanding OMZs. This leads release phosphorus from sediments. If anthropogenic carbon dioxide emissions continue...
Abstract. Quantifying the mean state and temporal change of seawater age is crucial for understanding role ocean circulation its in climate system. One commonly used technique to estimate water Inverse Gaussian Transit Time Distribution method (IG-TTD), which applies measurements transient abiotic tracers like chlorofluorocarbon 12 (CFC-12). Here we use an Earth system model evaluate how accurately IG-TTD infers true from 1981 2015 tropical thermocline (on isopycnal layer σ0=25.5 kg ⋅ m-3)....
Abstract. Previous studies have suggested that enhanced weathering and benthic phosphorus (P) fluxes, triggered by climate warming, can increase the oceanic P inventory on millennial timescales, promoting ocean productivity deoxygenation. In this study, we assessed major uncertainties in projected inventories their imprint deoxygenation using an Earth system model of intermediate complexity for same business-as-usual carbon dioxide (CO2) emission scenario until year 2300 subsequent linear...
Abstract. Observations indicate an expansion of oxygen minimum zones (OMZs) over the past 50 years, likely related to ongoing deoxygenation caused by reduced solubility, changes in stratification and circulation, a potential acceleration organic matter turnover warming climate. Higher temperatures also lead enhanced weathering on land, which, turn, increase phosphorus alkalinity flux into ocean. The overall area ocean sediments that are direct contact with low bottom waters increases...
To assess the potential of coastal ocean alkalinity enhancement as a CO2 removal option for climate change mitigation, Flexible Ocean and Climate Infrastructure (FOCI) earth system model was used to simulate addition at European coast open North Atlantic. FOCI has global resolution 0.5° which can be regionally refined 0.1° with two-way nesting approach. The run in emission driven mode, starting linear ramp up from 2025 2035, after equivalent 1Gt Ca(OH)2 per year added both...
Abstract. Previous studies have suggested that weathering and benthic phosphorus (P) fluxes, triggered by climate warming, can increase the oceanic P inventory on millennial time scales, promoting ocean productivity deoxygenation. In this study, we assessed major uncertainties in projected inventories their imprint deoxygenation using an Earth system model of intermediate complexity for a business-as-usual carbon dioxide (CO2) emission scenario until year 2300 subsequent linear decline to...
This is an interesting paper describing potential future changes in marine phosphorus (P) cycling over the coming two millennia as obtained with earth system model of
<p>All Shared Socioeconomic Pathways (SSP) of future climate scenarios that are well below 2 °C warming require the application carbon dioxide removal (CDR) technologies. While mitigation potentials different CDR methods have been proposed, impacts only studied to a limited extent with Earth System Models (ESMs). As part Model Intercomparison Project (CDRMIP), we utilize here land-ocean-atmosphere coupled FOCI-MOPS model study potential reversibility and proposed...