A5017127019- Oceanographic and Atmospheric Processes
- Marine and coastal ecosystems
- Climate variability and models
- Coastal and Marine Dynamics
- Marine and fisheries research
- Tropical and Extratropical Cyclones Research
- Coastal wetland ecosystem dynamics
- Marine Biology and Ecology Research
- Ocean Waves and Remote Sensing
- Marine and environmental studies
- Geophysics and Gravity Measurements
- Methane Hydrates and Related Phenomena
- Meteorological Phenomena and Simulations
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Coastal and Marine Management
- Aquatic and Environmental Studies
- Ocean Acidification Effects and Responses
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal plant biology
- Flood Risk Assessment and Management
- Geological formations and processes
- Oil Spill Detection and Mitigation
- Microplastics and Plastic Pollution
Leibniz Institute for Baltic Sea Research
2016-2025
Leibniz University Hannover
2016-2022
BMT Group (Germany)
2021
University of Siegen
2019
Leibniz Association
2014
Carl von Ossietzky Universität Oldenburg
2008-2009
The ecological state of the Baltic Sea depends crucially on sufficiently frequent, strong deep water renewal periodic events by inflow oxygen rich saline from North Sea. Due to density stratification these inflows are only source for ventilation. Since early eighties last century frequency has dropped drastically 5 7 major per decade one decade. Wide spread anoxic conditions became usual in central Baltic. rare (MBI) 1993 and 2003 could interrupt bottom temporarily. After more than 10 years...
Abstract. The Dutch Wadden Sea is a region of intertidal flats located between the chain Islands and mainland. We present numerical model results on tidal prisms residual flows through inlets across one main watersheds. also provides insight into pathways fresh water originating from two sluices at Afsluitdijk (enclosure dike) use passive tracers. All these are obtained three-dimensional simulations carried out with General Estuarine Transport Model (GETM), horizontal resolution 200 m...
Abstract We report on methane enrichments that were observed during summer in the upper water column of Gotland Basin, central Baltic Sea. In eastern part basin, concentrations just below thermocline varied between 15 nM and 77 nM, contrast to western where no could be detected. Stable carbon isotope ratios ( δ 13 C‐CH 4 −67.6‰) indicated its situ biogenic origin from CO 2 reduction, which was supported by clonal sequences clustered with Methanomicrobiaceae , a family methanogenic Archaea....
Abstract This study provides an inventory of the recent benthic macrofaunal communities in entire Baltic Sea. The analyses soft-bottom invertebrate community data based on over 7000 locations Sea suggested existence 10 major species abundances and 17 biomasses, respectively. low-saline northern Baltic, characterized by silty sediments, is dominated Monoporeia affinis, Marenzelleria spp., Macoma balthica. Hydrobiidae, Pygospio elegans, Cerastoderma glaucum dominate sandy habitats off Estonian...
Major objectives were to provide a comprehensive dataset on beach macro-litter for parts of the southern Baltic Sea and analyse if methodology is fully applicable suitable monitoring method in Baltic. We carried out regular macro litter (OSPAR methodology, 4 time year) 35 beaches along German Lithuanian coast over 2–5 years. Additional experiments addressed subjectivity field surveys spatio-temporal variability different scales. observed no seasonality data monthly compared 3-monthly...
Abstract A baroclinic three‐dimensional numerical model for the entire Wadden Sea of German Bight in southern North is first assessed by comparison to field data surface elevation, current velocity, temperature, and salinity at selected stations then used calculate fluxes volume salt inside exchange between adjacent through major tidal inlets. The simulating reference years 2009–2011. An overview prisms residual main inlets their variability given. In addition, from an intensive...
Abstract In December 2014, an exceptional inflow event into the Baltic Sea was observed, a so‐called Major Inflow (MBI). Such events are important for deep water ventilation in and typically occur every 3–10 years. Based on first observational data sets, this had been ranked as third largest since 100 With help of multinested modeling system, reaching from North Atlantic (8 km resolution) to Western (600 m resolution, which is baroclinic eddy resolving), reproduced detail. The model gave...
The skill of the state-of-the-art ocean circulation models GETM (General Estuarine Transport Model), RCO (Rossby Centre Ocean model), and MOM (Modular Model) to represent hydrographic conditions mean Baltic Sea is investigated. study contains an assessment vertical temperature salinity profiles as well various statistical time series analyses for different depths at specific representative monitoring stations. Simulation results 1970-1999 are compared observations from Environmental Database...
Abstract We analyzed changes in mean sea level (MSL) for the period 1950–2015 using a regional ocean model Baltic Sea. Sensitivity experiments allowed us to separate external from local drivers and investigate individual forcing agents triggering basin-internal spatial variations. The reveals basin-average MSL rise (MSLR) of 2.08 ± 0.49 mm yr −1 , value that is slightly larger than simultaneous global average 1.63 0.32 . This MSLR is, however, spatially highly nonuniform with lower increases...
Abstract We use an observational data set of tidal gauges in the North Sea to investigate annual cycle M 2 and 4 amplitudes phases. The sea surface elevation amplitude can vary by 8–10% 12–30% over course year, with larger summer. phase variations are range 3–15°. reason for these is thermal structure Sea: a well‐developed thermocline summer well‐mixed water column during winter. interaction tides one main drivers residual sediment transport. Using analytical model, seasonal variability...
Coastal zones connect terrestrial and marine ecosystems forming a unique environment that is under increasing anthropogenic pressure. Rising sea levels, sinking coasts, changing precipitation patterns modify hydrodynamic gradients may enhance sea-land exchange processes in both tidal non-tidal systems. Furthermore, the removal of flood protection structures as restoration measure contributes locally to coastlines. A detailed understanding ecosystem functioning coastal interactions between...
Abstract Recent results from a tracer release experiment have shown that, similar to many lakes and ocean basins, deep‐water mixing in the Baltic Sea is largely determined by processes occurring energetic near‐bottom region. Due complexity small vertical extent of this region, however, previous modeling studies so far not been able provide numerically physically sound representation boundary mixing. Here we discuss first nested high‐resolution simulation central that aims at realistic...
Abstract. Several methanogenic pathways in oxic surface waters were recently discovered, but their relevance the natural environment is still unknown. Our study examines distinct methane (CH4) enrichments that repeatedly occur below thermocline during summer months central Baltic Sea. In agreement with previous studies this region, we discovered differences distributions between western and eastern Gotland Basin, pointing to situ production latter (concentration of CH4 14.1±6.1 nM, δ13C...
High riverine nutrient loads caused poor water quality, low transparency and an unsatisfactory ecological status in the Szczecin (Oder) Lagoon, a trans-boundary at southern shore of Baltic Sea. Total annual N (P) into lagoon raised 20th century from approx. 14,000~t~TN (1,000~t~TP) to 115,000~t~TN (10,500~t~TP) 1980ties declined about 56,750~t~TN (2,800~t~TP) after 2010. Nutrient concentrations, (Secchi depth) chlorophyll-a showed positive response reduced Polish eastern lagoon. This was not...
Abstract. Among the Baltic Sea littoral states, Germany is anticipated to endure considerable damage as a result of increased coastal flooding due sea-level rise (SLR). Consequently, there growing demand for flood risk assessments, particularly at regional scales, which will improve understanding impacts SLR and assist adaptation planning. Existing studies on along German coast either use state-of-the-art hydrodynamic models but cover only small fraction study region or assess potential...