A5108166906- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Marine and environmental studies
- Ocean Acidification Effects and Responses
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Marine Invertebrate Physiology and Ecology
- Scientific Research and Discoveries
- Maritime and Coastal Archaeology
- Microbial Community Ecology and Physiology
- Offshore Engineering and Technologies
- Marine Bivalve and Aquaculture Studies
- Groundwater and Isotope Geochemistry
- Protist diversity and phylogeny
- Ocean Waves and Remote Sensing
- Geological Studies and Exploration
- Potato Plant Research
- Mine drainage and remediation techniques
- Plant Ecology and Soil Science
National Institute of Oceanography and Applied Geophysics
2013-2024
Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
2000-2005
Istituto Sperimentale Agronomico
1999-2003
University of Southampton
2000
Instytut Oceanologii Polskiej Akademii Nauk
2000
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2000
University of Trieste
1997
Massachusetts Institute of Technology
1996
In 1997 an inversion in the Ionian upper‐layer circulation was documented and ascribed to a massive inflow of Aegean dense waters associated with Eastern Mediterranean Transient (EMT) not wind‐stress (Borzelli et al., 2009). Here we generalize concept hypothesizing that such inversions are possible even absence influence. Indeed, salinity density data collected Southern Adriatic, main source deep water, show decadal variations coherent changes sea level height northern Ionian. Scaling...
Abstract. Analysis of 20-year time-series the vertically averaged salinity and nutrient data in Southern Adriatic shows that two parameters are subject to strong decadal variability. In addition, it is documented variations out phase. Nutrients Ionian vary parallel except generally content lower than Ionian, a fact has been attributed primary producer consumption following winter convective mixing. As shown earlier, North Gyre (NIG) changes its circulation sense on scale due Bimodal...
In the Arctic Ocean, Pacific source water can be distinguished from Atlantic by nitrate‐phosphate concentration relationships, with having higher phosphate concentrations relative to those of nitrate. Furthermore, water, originally inflow through Bering Strait, is clearly recognizable in outflows low‐salinity waters Ocean northern North Canadian Archipelago and Fram Strait. Archipelago, we observe that almost all flowing Lancaster Jones sounds, most top 100 m Smith Sound (containing flow...
[1] We study the impact of decadal inversions Ionian upper layer circulation (denominated as Adriatic-Ionian Bimodal Oscillation System) on thermohaline properties Levantine and Cretan Seas. Lagrangian drifter data surface geostrophic currents show that Atlantic Water (AW) flow is well organized most intense when cyclonic. During anticyclonic phase, AW spreading pathway longest, contributing to its prolonged mixing higher salinity once it reaches Levantine. Thus, basin subject less dilution...
Maps of the remotely sensed Absolute Dynamic Topography (ADT) and Sea Surface Temperature (SST) over Eastern Mediterranean in period June 1993 to 2001 show a dramatic sudden change sea surface structure. This change, which is presumably associated with relaxation Transient (EMT), had taken place by middle 1997 consisted complete reversal Ionian upper‐layer circulation from anticyclonic cyclonic. In EMT phase, SST ADT maps suggest enhanced communication between Aegean basins as well waters...
Abstract. The Mediterranean Sea (MedSea) is considered a "laboratory basin" being an ocean in miniature, suffering dramatic changes its oceanographic and biogeochemical conditions derived from natural anthropogenic forces. Moreover, the MedSea prone to absorb store carbon due particular CO2 chemistry active overturning circulation. Despite this, water column measurements covering whole basin are scarce. This work aims be base-line for future studies about system space-time variability...
Abstract. Adriatic and Ionian seas are Mediterranean sub-basins linked through the Bimodal Oscillating System mechanism responsible for decadal reversals of basin-wide circulation. Altimetric maps showed that last cyclonic mode started in 2011 but unexpectedly 2012 reversed to anticyclonic. We related this "premature" inversion extremely strong winter 2012, which caused formation very dense waters, flooding flanks May inverting bottom pressure gradient. Using Lagrangian float measurements,...
The Mediterranean is a marginal sea displaying peculiar biogeochemistry (enhanced deep respiration, non Redfieldian nutrient ratios, etc.). Here we discuss the different processes that may contribute to observed peculiarities, inferred from analysis of data generated mostly during last decade. Both nitrate orthophosphate (N:P) and orthosilicate (Si:N) ratios display decreasing east‐west gradient (N:P > 25 Si:N 1.3 in eastern Mediterranean, N:P ∼ 20 ≤ 1.0 western Mediterranean). transports...
Abstract. Previous studies have demonstrated that the salinity in Levantine basin depends on intensity of Atlantic water (AW) inflow. Moreover, its spreading eastward (to basin) or northward Ionian Sea) is determined by circulation pattern, i.e. Adriatic–Ionian Bimodal Oscillating System (BiOS) mechanism. The aim this paper to relate variations salt content variability core Intermediate Water (LIW) passing through Sicily Channel (SC) and possible impact Western Mediterranean Transition – WMT...
Abstract Under the emerging features of interannual-to-decadal ocean variability, periodical reversals North Ionian Gyre (NIG), driven mostly by mechanism named Adriatic-Ionian Bimodal Oscillating System (BiOS), are known as impacting on marine physics and biogeochemistry potentially influencing short-term regional climate predictability in Eastern Mediterranean. Whilst it has been suggested that local wind forcing cannot explain such aspects alternative hypothesis indicating NIG mainly...
The Mediterranean Sea presents several biogeochemical anomalies compared to the global ocean. An unbalanced N budget, high nitrate/phosphate ratios in subsurface waters and low 15 N/ 14 particulate dissolved nitrogen suggest a significant occurrence of 2 fixation. This study presents, for first time, basin‐wide overview direct measurements fixation, with values North Atlantic comparison, during late spring 2007. Very fixation rates (0.052 ± 0.031 nmols l −1 d ) were observed all sub‐regions...
Abstract. In September 2021, as part of the Italian Arctic research programme, a multidisciplinary cruise along 75th parallel north through Greenland Sea Gyre was conducted aboard icebreaker Laura Bassi CASSANDRA project, which also contributed to Synoptic Survey (SAS) 2020/22. The took place during period lowest summer sea ice extent ever measured. data show strong horizontal gradients with temperatures between 1.5 °C and 9.0 salinity 30 35. Warm salty Atlantic Water (AW, θ > 3.0 °C, S...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 248:1-13 (2003) - doi:10.3354/meps248001 Vertical distribution of exopolymer particles in sea ice Fram Strait (Arctic) during autumn Klaus Meiners1,5,*, Rolf Gradinger2, Johanna Fehling1,3, Giuseppe Civitarese4, Michael Spindler1 1Institute for Polar Ecology, University Kiel, Wischhofstraße 1-3, Gebäude 12,...
Since the Aegean took over deep water production of Eastern Mediterranean at end 1980s, proficiency Adriatic as a formation site has been under question. The salt supply in intermediate enabling to produce dense was diminished because salinity decrease by upwelling mid‐depth waters. Tracer data indeed indicate that layer not ventilated for most 1990s. presented also show dilution reached peak 1995, after which more and saline waters were added. recent increase an extremely mass supplied from...
PERSEUS project aims to identify the most relevant pressures exerted on ecosystems of Southern European Seas (SES), highlighting knowledge and data gaps that endanger achievement SES Good Environmental Status (GES) as mandated by Marine Strategy Framework Directive (MSFD). A complementary approach has been adopted, a meta-analysis existing literature pressure/impact/knowledge summarized in tables related MSFD descriptors, discriminating open waters from coastal areas. comparative assessment...
Abstract. Temperature, salinity and oxygen data collected during April June 2011 (M84/3 P414 cruises respectively) are analysed to derive the oceanographic characteristics of Eastern Mediterranean (EM) basin. These observed compared with those from previous over period 1987–2011. As a result, interannual decadal variability EM thermohaline properties discussed in context evolution Transient (EMT) general circulation We found that state is still far pre-EMT conditions, though results possibly...
In winter 1995 the last major field work of Physical Oceanography Eastern Mediterranean (POEM) program was carried out, Levantine Intermediate Water Experiment (LIWEX). this study a thorough analysis is presented data set collected during three successive surveys in January, February, and March–April 1995. The overall result that basin shown to be site for multiple, different, water mass formation processes. Deep (LDW) formed Rhodes gyre, with preconditioning phase starting December 1994....