A5073161313- Oceanographic and Atmospheric Processes
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Climate variability and models
- Ocean Acidification Effects and Responses
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Arctic and Russian Policy Studies
- Meteorological Phenomena and Simulations
- Geological Studies and Exploration
- Hydrocarbon exploration and reservoir analysis
- Machine Learning in Materials Science
- Geochemistry and Geologic Mapping
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Geophysics and Gravity Measurements
- Reservoir Engineering and Simulation Methods
- Atmospheric Ozone and Climate
- Geological and Geochemical Analysis
- Data Visualization and Analytics
- Data Management and Algorithms
GEOMAR Helmholtz Centre for Ocean Research Kiel
2014-2025
GEOMAR Technologie GmbH - GTG
2023
CMCC Foundation - Euro-Mediterranean Center on Climate Change
2008-2012
Central Maine Community College
2009-2011
Abstract This contribution to the RECCAP2 (REgional Carbon Cycle Assessment and Processes) assessment analyzes processes that determine global ocean carbon sink, its trends variability over period 1985–2018, using a combination of models observation‐based products. The mean sea‐air CO 2 flux from 1985 2018 is −1.6 ± 0.2 PgC yr −1 based on an ensemble reconstructions history sea surface pCO (pCO products). Models indicate dominant component this net oceanic uptake anthropogenic , which...
Abstract We assess the Southern Ocean CO 2 uptake (1985–2018) using data sets gathered in REgional Carbon Cycle Assessment and Processes Project Phase 2. The acted as a sink for with close agreement between simulation results from global ocean biogeochemistry models (GOBMs, 0.75 ± 0.28 PgC yr −1 ) p ‐observation‐based products (0.73 0.07 ). This is only half that reported by RECCAP1 same region timeframe. present‐day net to first order response rising atmospheric , driving large amounts of...
Abstract. In the framework of a changing climate, it is useful to devise methods capable effectively assessing and monitoring landscape air–sea CO2 fluxes. this study, we developed an integrated machine learning tool objectively classify track marine carbon biomes under seasonally interannually environmental conditions. The was applied monthly output global ocean biogeochemistry model at 0.25° resolution run atmospheric forcing for period 1958–2018. Carbon are defined as regions having...
Abstract The response of eddy kinetic energy (EKE) to the strengthening Southern Hemisphere winds occurring since 1950s is investigated with a global ocean model having resolution 1/12° in Antarctic Circumpolar Current domain. simulations expose regional differences relative importance stochastic and wind‐related contributions interannual EKE changes. In Pacific Indian sectors captures variability observed 1993 confirms previous hypotheses lagged wind stress anomalies. Here multidecadal...
The Southern Ocean is a major sink of atmospheric CO2, but the nature and magnitude its variability remains uncertain debated. Estimates based on observations suggest substantial that not reproduced by process-based ocean models, with increasingly divergent estimates over past decade. We examine potential constraints climate-driven CO2 from observation-based air-sea O2 fluxes. On interannual time scales, in fluxes estimated consistent across two species positively correlated simulated...
This document describes the CMCC Earth System Model (ESM) for representation of carbon cycle in atmosphere, land, and ocean system. The structure report follows software architecture full It is intended to give a technical description numerical models at base ESM, how they are coupled with each other.
Abstract Long‐term observations from a 17 year long mooring array at the exit of Labrador Sea 53°N are compared to output high‐resolution model (VIKING20). Both analyzed define robust integral properties on basin and regional scale, which can be determined evaluated equally well. While both, model, show narrow DWBC cyclonically engulfing Sea, model's boundary current system is more barotropic than in spectral analysis indicates stronger monthly interannual transport variability. Compared...
Abstract. The consideration of marine biogeochemistry is essential for simulating the carbon cycle in an Earth system model. Here we present implementation and evaluation a biogeochemical model, Model Oceanic Pelagic Stoichiometry (MOPS) Flexible Ocean Climate Infrastructure (FOCI) climate FOCI-MOPS enables simulation biological processes, i.e. carbon, nitrogen, oxygen cycles with prescribed or prognostic atmospheric CO2 concentration. A series experiments covering historical period...
The abyssal warming around Antarctica is one of the most prominent multidecadal signals change in global ocean. Here we investigate its dynamical impacts on Atlantic Meridional Overturning Circulation (AMOC) by performing a set experiments with ocean-sea ice model NEMO-LIM2 at ½° horizontal resolution. simulations suggest that ongoing Antarctic Bottom Water (AABW), already affecting much Southern Hemisphere rate up to 0.05°C decade−1, has important implications for large-scale meridional...
In this study a coupled ocean‐atmosphere model containing interactive marine biogeochemistry is used to analyze interannual, lagged, and decadal biogeochemical responses the North Atlantic Oscillation (NAO), dominant mode of atmospheric variability. The adequately reproduces present‐day climatologies NAO It shown that are governed by different mechanisms according time scale considered. On interannual scales, local changes in vertical mixing, caused modifications air‐sea heat, freshwater,...
Abstract. This paper analyzes the relationship between deep sedimentary fluxes and ocean current vertical velocities in an offshore area of Ionian Sea, deepest basin Eastern Mediterranean Sea. Sediment trap data are collected at 500 m 2800 depth two successive moorings covering period September 1999–May 2001. A tight coupling is observed upper traps estimated particle sinking rates more than 200 day−1. The velocity field computed from a 1/16°×1/16° Ocean General Circulation Model simulation...
Our research focuses on the detection of ocean carbon uptake regimes that are critical in context comprehending climate change. One observation among geoscientific data Earth System Sciences is datasets often contain local and distinct statistical distributions posing a major challenge applying clustering algorithms for analysis. The use global parameters many inadequate to capture such distributions. In this study, we propose novel tool detect visualize oceanic clusters. We implement...
<title>Abstract</title> Ocean deoxygenation is becoming a major stressor for marine ecosystems. Climate change affects ocean oxygen by altering wind fields and air-sea heat freshwater fluxes. However, the quantitative contribution of these drivers to remains uncertain. Here, we use global biogeochemistry model run under historical atmospheric forcing show that since late 1960s has been driven mainly changing fluxes associated changes in solubility circulation. ~60% this was offset...
Abstract. In the framework of a changing climate, it is useful to devise methods capable effectively assessing and monitoring landscape air-sea CO2 fluxes. this study, we developed an integrated machine learning tool objectively classify track marine carbon biomes under seasonally interannually environmental conditions. The was applied monthly output global ocean biogeochemistry model at 0.25° resolution run atmospheric forcing for period 1958–2018. Carbon are defined as regions having...
Abstract Enhanced Southern Ocean ventilation in recent decades has been suggested to be a relevant modulator of the observed changes ocean heat and carbon uptake. This study focuses on midlatitude from 1960s 2010s. A global 1/4° configuration NEMO–Louvain-la-Neuve sea ice model, version 2 (LIM2), including inert tracer CFC-12 (a proxy ventilation) is forced with CORE, phase II (CORE-II), JRA-55 driving (JRA55-do) atmospheric reanalyses. Sensitivity experiments, where variability wind stress...
Our research focuses on detecting and tracking ocean carbon regimes, which are crucial indicators for understanding the impacts of climate change uptake. Geoscientific datasets in Earth System Sciences often contain local distinct statistical distributions at a regional scale. This poses significant challenge applying conventional clustering algorithms data analysis. Based observed limitations prominent methods, our study, we propose framework that enhances well-established unsupervised...
We assess the Southern Ocean CO2 uptake (1985-2018) using data sets gathered in REgional Carbon Cycle Assessment and Processes Project phase 2 (RECCAP2). The acted as a sink for with close agreement between simulation results from global ocean biogeochemistry models (GOBMs, 0.75±0.28 PgCyr-1) pCO2-observation-based products (0.73±0.07 PgCyr-1). This is only half that reported by RECCAP1. present-day net to first order response rising atmospheric CO2, driving large amounts of anthropogenic...