Lista completa de publicações
Lista de publicações de artigos científicos liderados ou com colaboração dos pesquisadores do grupo CARBON Team (LEOC - IO - FURG).
2024
2023
Silvano et al. Observing Antarctic Bottom Water in the Southern Ocean. Frontiers in Marine Science.
Highlights Manta et al.
• Overturning maximum is 15.64 ± 1.39 Sv; Meridional heat and freshwater transport are 0.27 ± 0.10 PW and 0.23 ± 0.02 Sv, respectively.
• Excluding the mesoscale eddies from the section increased the meridional heat transport by 0.12 PW.
• The distribution of water masses and currents reflects the favorable position of the section for observing.
Highlights Henley et al.
• This assessment of Southern Ocean biogeochemistry has assimilated existing knowledge and presented new data that show the integral role of biogeochemical cycling – of iron, carbon and major nutrients in particular – in supporting marine ecosystem functioning and regulating sea-air CO2 fluxes at regional and global scales.
Highlights Ferreira et al.
• The response of regional phytoplankton communities is expected to differ at short- and long-term, an overall trend toward smaller flagellates is expected.
• Five main research gaps in the current understanding on phytoplankton response to climate change in the NAP are identified.
• Achieving these goals will only be possible with the inter-collaboration of Antarctic research programs and scientific community under a common research framework.
Highlights Azar et al.
• The SACW is composed by four STMW varieties and is the dominant water in the tropical Atlantic.
• ∼34% of Subtropical Indian Mode Water (STIMW) contributes to the mixing fraction of the South Atlantic Central Water.
• An averaged STIMW volume transport of 5.5 ± 3.2 Sv is estimated between 1993 and 2017 towards the South Atlantic.
• ∼20% of STIMW reaches the North Brazil Current through the southern South Equatorial Current bifurcation.
• Cyclonic and anticyclonic eddies transport similar mixing fractions of mode water varieties.
Highlights Costa et al.
• The low grazing indices and the high diatom biomass observed in the NAP suggest that the diatom bloom was in a fast sinking process.
• Observations corroborate the concept that highly productive Antarctic coastal marine ecosystems are effective biological carbon pump systems.
• This scenario represents a low energy input from the primary producers to the classic short diatom–krill–whale Antarctic food chain.
Highlights Monteiro et al.
• The spatial variability of the carbonate system parameters is clearly greater in spring and summer than in autumn and winter.
• The carbonate system parameters on the surface of the strait follow seasonal FCO2 dynamics, that is, sea ice dynamics.
• The effects of intensified summer CO2 uptake on calcite and aragonite saturation in surface waters may emerge in the coming years.
Highlights Carvalho et al.
• CO2 fluxes vary from small outgassing to strong sink conditions.
• Enhanced CO2 uptake on the western domain was associated with salinity variations.
• Increased haptophyte concentrations boosted the CO2 uptake in the gyre.
• Intense CO2 uptake in the eastern domain (30°S) was associated with haptophytes.
Highlights Monteiro et al.
• We analysed the CO2 system in an important region of the Southern Ocean.
• The Gerlache Strait acts as a stronger CO2 sink than nearby open ocean areas during the austral summer.
• We identified both strong and near-equilibrium sink scenarios for FCO2 from 1999 to 2017.
• The pattern of variability of FCO2 has changed since 2012 to a higher frequency of years with a strong CO2 sink.
Highlights Orselli et al. 2018
• Carbonate system has been driven by dilution/evaporation and sea–air CO2 exchanges.
• The Patagonian shelf is a key area of anthropogenic carbon uptake.
• SACW is acidifying faster in the Patagonian shelf-break than in the South Atlantic.
• AAIW is under risk for aragonite undersaturation near the Patagonian shelf-break.
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