A5083618514- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Methane Hydrates and Related Phenomena
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Marine and fisheries research
- Oceanographic and Atmospheric Processes
- Arctic and Antarctic ice dynamics
- Geochemistry and Elemental Analysis
- Isotope Analysis in Ecology
- Aquatic Invertebrate Ecology and Behavior
- Recycling and Waste Management Techniques
- Marine Bivalve and Aquaculture Studies
- Microplastics and Plastic Pollution
- Maritime Navigation and Safety
- Soil and Water Nutrient Dynamics
- Inorganic Fluorides and Related Compounds
- biodegradable polymer synthesis and properties
- Hydrocarbon exploration and reservoir analysis
- Oil Spill Detection and Mitigation
- Paleontology and Stratigraphy of Fossils
- Maritime Transport Emissions and Efficiency
- Combustion and Detonation Processes
- Advanced Chemical Sensor Technologies
- Groundwater and Isotope Geochemistry
Leibniz Institute for Baltic Sea Research
2008-2023
Abstract. We mapped, sampled, and quantified gas emissions at the continental margin west of Svalbard during R/V Heincke cruise He-387 in late summer 2012. Hydroacoustic mapping revealed that were not limited to a zone just above 396 m water depth. Flares from this depth have gained significant attention scientific community recent years because they may be caused by bottom-water warming-induced hydrate dissolution course global warming and/or recurring seasonal formation decay. found...
"Self-preservation" is a kinetic anomaly that allows for storing substantial amount of gas locked in hydrate far outside its thermodynamic stability field period days, weeks, or even months under very mild pressure–temperature (p–T) conditions, by merely maintaining temperatures below the melting point ice. Utilizing this phenomenon low-cost storage and transportation natural not yet sufficiently developed to be competitive with already existing, well-established methods (e.g., liquefied...
Abstract. Large-scale climatic forcing is impacting oceanic biogeochemical cycles and expected to influence the water-column distribution of trace gases, including methane nitrous oxide. Our ability as a scientific community evaluate changes in inventories oxide depends largely on our capacity obtain robust accurate concentration measurements that can be validated across different laboratory groups. This study represents first formal international intercomparison whereby participating...
Abstract. We mapped, sampled, and quantified gas emissions at the continental margin west of Svalbard during R/V Heincke cruise He-387 in late summer 2012. Hydroacoustic mapping revealed that were not limited to a zone just above 396 m below sea level (m b.s.l.). Flares from this depth gained significant attention scientific community recent years because they may be caused by bottom water-warming induced hydrate dissolution course global warming and/or recurring seasonal formation decay....
Abstract Upward transport and/or mixing of trace gas‐enriched subsurface waters fosters the exchange nitrous oxide (N 2 O) and methane (CH 4 ) with atmosphere in Eastern‐South Atlantic (ESA). To date, it is, however, unclear whether this source is maintained by local production or advection water masses. The meridional zonal variability N O CH ESA were investigated to identify contributions major regional masses overall budget . maximal sea surface concentrations main upwelling cells...
Abstract. Autonomous measurements aboard ships of opportunity (SOOP) provide in situ data sets with high spatial and temporal coverage. In this study, we use 8 years carbon dioxide (CO2) methane (CH4) observations from SOOP Finnmaid to study the influence upwelling on trace gas dynamics Baltic Sea. Between spring autumn, coastal transports water masses enriched CO2 CH4 surface We seasonality, regional distribution, relaxation, interannual variability process. reanalysed wind modelled sea...
Abstract. Autonomous measurements aboard ships of opportunity (SOOP) provide in situ data sets with high spatial and temporal coverage. In this study, we use 8 years carbon dioxide (CO2) methane (CH4) observations from SOOP Finnmaid to study the influence upwelling on trace gas dynamics Baltic Sea. Between spring autumn, coastal transports water masses enriched CO2 CH4 surface We seasonality, regional distribution, relaxation, interannual variability process. reanalysed wind modelled sea...
In marine systems, the loss of nitrogen caused by denitrification in oxygen-deficient zones is balanced fixation mediated cyanobacteria, which may form extensive blooms surface waters. this study, determining concentration ratio (N2) and argon (Ar) air equilibrated with water, we were able to detect changes N2 attributable fixation. For purpose, water was pumped continuously into a spray-type equilibrator while equilibrator's headspace analyzed mass spectrometry. After laboratory tests model...
Abstract. Large scale climatic forcing is impacting oceanic biogeochemical cycles and expected to influence the water-column distribution of trace gases including methane nitrous oxide. Our ability as a scientific community evaluate changes in inventories oxide depends largely on our capacity obtain robust accurate concentration measurements which can be validated across different laboratory groups. This study represents first formal, international, intercomparison whereby participating...
<p>Coastal regions are under the threat of surface water acidification, which its ecological and socioeconomic impacts need to be better constrained. However, pH measurements in coastal waters challenging still primarily measured discretely, compromising spatial or temporal scales. Therefore, directly measuring an acidification parameter, such as pH, with high coverage could improve our understanding changes acid-base balance and, thus, potential biogeochemical processes these...
The sabotage of the Nord Stream pipelines on 26 September 2022 led to largest event methane venting atmosphere record. contained about 300 000 tonnes methane, and an estimate based Europe's ICOS network quantified emissions at 90 000-300 in first days (Ramonet et al., 2022). vast majority that vented from into water likely escaped near-instantly via bubble transport, which had largely ceased by 1 October 2022. However, a fraction dissolved water. To investigate possibility "long tail"...