A5084954207- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Oceanographic and Atmospheric Processes
- Groundwater and Isotope Geochemistry
- Microbial Community Ecology and Physiology
- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Cryospheric studies and observations
- Ocean Acidification Effects and Responses
- Reservoir Engineering and Simulation Methods
- Meteorological Phenomena and Simulations
- Mercury impact and mitigation studies
- Water Quality and Pollution Assessment
- Water Quality Monitoring Technologies
- Hydrological Forecasting Using AI
- Scientific Research and Discoveries
- Climate Change Policy and Economics
- Carbon Dioxide Capture Technologies
Max Planck Institute for Meteorology
2021-2025
Universität Hamburg
2024
Nantong University
2022
Utrecht University
2015-2018
Tianjin University
2011
Abstract. The carbon cycle component of the newly developed Earth system model intermediate complexity CLIMBER-X is presented. represents cycling through atmosphere, vegetation, soils, seawater and marine sediments. Exchanges with geological reservoirs occur sediment burial, rock weathering volcanic degassing. state-of-the-art HAMOCC6 employed to simulate ocean biogeochemistry processes. land PALADYN simulates processes related vegetation soil dynamics, including permafrost peatlands. dust...
Abstract. The stable carbon isotopic composition (δ13C) is an important variable to study the ocean cycle across different timescales. We include a new representation of isotope 13C into HAMburg Ocean Carbon Cycle model (HAMOCC), biogeochemical component Max Planck Institute Earth System Model (MPI-ESM). explicitly resolved for all oceanic pools considered. account fractionation during air–sea gas exchange and biological ϵp associated with photosynthetic fixation phytoplankton growth....
Understanding the mechanisms governing evolution of ocean’s anthropogenic carbon reservoir is critical for assessing its role in global cycle and susceptibility ocean sink to climate change. Anthropogenic carbon, primarily from fossil fuel burning, interacts with alters natural cycle, increasing vulnerability surface waters leaks. To address these dynamics, we quantify affecting oceanic including circulation, biological production, carbonate chemistry, using Max Planck Institute...
The global ocean plays a crucial role in redistributing and storing heat, carbon, nutrients other essential elements the Earth’s climate system. As prominent part of circulation, Atlantic Meridional Overturning Circulation (AMOC) shapes spatial distribution these links atmosphere to deep ocean.The state oxygenation carbon storage capacity are tightly connected biogeochemical activity. High oxygen levels facilitate efficient remineralization organic matter, helping stabilize CO2...
The ocean carbon sink and deoxygenation are two key research focuses under the current anthropogenically warming climate, as former is essential in regulating atmospheric CO2, latter a vital factor for marine ecosystem. oceanic oxygen cycles closely linked they commonly influenced by several processes, such temperature-dependent gas solubility, organic matter remineralisation interior ocean, ventilation. Future predictions of still subject to considerable uncertainties observational data...
Abstract. The carbon cycle component of the newly developed Earth System Model intermediate complexity CLIMBER-X is presented. model represents cycling through atmosphere, vegetation, soils, seawater and marine sediments. Exchanges with geological reservoirs occur sediment burial, rock weathering volcanic degassing. state-of-the-art HAMOCC6 employed to simulate ocean biogeochemistry sediments processes. land PALADYN simulates processes related vegetation soil dynamics, including permafrost...
Abstract. Although it is well-established that anthropogenic CO2 emitted into the atmosphere will persist for a long time, duration of climate perturbation depend on how rapidly excess removed from system by different biogeochemical processes. The uncertainty around long-term evolution therefore not only linked to future emissions, but our insufficient understanding carbon cycle. Here, we use fast Earth model CLIMBER-X, which features comprehensive cycle, examine lifetime and its effects...
Abstract. Exchange of carbon between the ocean and atmosphere is a key process that influences past climates via glacial–interglacial variations CO2 concentration. The melting ice sheets during deglaciations induces sea level rise which leads to flooding coastal land areas, resulting in transfer terrestrial organic matter ocean. However, consequences such fluxes on biogeochemical cycle uptake release are poorly constrained. Moreover, this potentially important exchange at land–sea interface...
Dansgaard-Oeschger (DO) and Heinrich (H) events are ubiquitous features of glacial climates involving abrupt large changes in climate over the North Atlantic region, extending also to Southern Hemisphere through bipolar seesaw mechanism. Ice core data indicate that DO H accompanied by pronounced atmospheric CO2 concentration, but their origin remains uncertain. Here, we use simulations with fast Earth system model CLIMBER-X, which produces self-sustained as internal variability, explore...
Simulating and reproducing the past Atlantic meridional overturning circulation (AMOC) with comprehensive climate models are essential to test ability of simulate different climates. At Last Glacial Maximum (LGM), reconstructions show a shoaling AMOC compared modern climate. However, almost all state-of-the-art deeper LGM AMOC. Here, we conduct multi-model analysis using outputs from PMIP phases (PMIP2 PMIP4) consistently explore causes this paleodata-model mismatch. The focuses on role...
The ocean plays an essential role in the rise of atmospheric CO2 by about 90 ppmv during last deglaciation. deglacial oceanic outgassing is jointly controlled physical, biological and geochemical processes, which affect variations circulation, carbon pump alkalinity inventory. Transient simulations climate-carbon feedback, particularly using comprehensive Earth System Models, are instrumental tools to quantify contribution different processes their interactions. Nonetheless, knowledge gaps...
The ocean contained a larger carbon content at the Last Glacial Maximum (LGM, ~21kyr before present) compared to late Holocene, making considerable contribution deglacial atmospheric CO2 rise of about 90 ppm. Yet, there’s no consensus on mechanisms controlling glacial-interglacial changes in oceanic storage due uncertainties and sparseness proxy data. Numerical simulations have been widely used quantify impact key factors, such as sea surface temperatures, circulation biological...
Abstract Representing glacial‐interglacial changes in ocean carbon sequestration remains a major challenge for Earth System Models (ESMs). Uncertainties circulation and biological export are essential causes model‐data mismatch. We quantify the impact of these factors by calibrating Max Planck Institute‐ESM. A shallower weaker glacial Atlantic Meridional Overturning Circulation (AMOC) than present day, achieved decreasing background vertical diffusivity, enables capturing main features...
Water exchange is important to study the solute transport pathway, assess self-purification capacity and predict water quality in estuarine coastal waters. In this paper, a method characteristics was presented, modeled with random walk expressed form of matrix. Then applied environmental impact assessment brine discharge from desalination plants look into Tianjin region. Moreover, based on results, potential discharged waste each sub-area discussed region suitable for setting suggested, so...
The marine biological carbon pump substantially contributes to the glacial-interglacial CO2 change. Compared late Holocene, proxy data for Last Glacial Maximum (LGM) generally agree on an increased export production, associated with enhanced pump, in subantarctic region of Southern Ocean (SO). By contrast, global production during LGM is poorly constrained due sparseness and uncertainty data. efficiency mainly controlled by phytoplankton growth, ocean circulation sinking remineralisation...
The global carbon cycle is a complex system with many drivers, including slow ones such as the chemical weathering of rocks. At long enough timescales, changes in rates influence CO2 consumption, but also river loads carbon, nutrients, and alkalinity. In particular, ocean inventory alkalinity critical driver sequestration into ocean. Thus, any transitory imbalance between sources sinks can lead to chemistry impact atmospheric concentration. During last deglaciation (ca. 19-11 ka BP),...