Reply on RC2 DOI Creative Commons
Ivan Kuznetsov

Published: Dec. 23, 2023

Abstract. The Arctic Ocean is a region important for global and regional climate. Although generally quiescent compared to mid-latitudes, the upper ocean hosts mesoscale smaller scale processes. These processes can have profound impact on vertical fluxes, stratification, feedback with sea ice atmosphere. Sparse non-synoptic in-situ observations of polar oceans are limited by distribution manual observing platforms autonomous instrumentation. Analyzing observational data assess tracer field gradients dynamics becomes highly challenging when measurement drift pack due continuous changes in speed direction. This work presents dynamical reconstruction state, based Multidisciplinary Observatory Study Climate (MOSAiC) experiment. Overall, model reproduce lateral structure temperature, salinity, density fields, which allows projecting dynamically consistent features these fields onto regular grid. We identify two separate depth ranges enhanced eddy kinetic energy, located around maxima buoyancy frequency: halocline warm (modified) Atlantic Water. Simulations reveal notable decrease surface layer salinity towards north, accompanied high variability mixed south-north And no significant horizontal but an increase from west east 0.084 m/km gradient 0.6 standard deviation, indicating opposite characteristics resolves several stationary eddies Water provides insights into associated dynamics. obtained three-dimensional temperature be used further analysis thermohaline related submesoscale Central Arctic. Dynamic comparison state-of-the-art climate Earth System Models. developed nudging method utilize future diverse set instruments.

Language: Английский

Properties and Mechanisms of Seawater Exchange in Marian Cove, King George Island, West Antarctic Peninsula DOI Creative Commons
Y.-B. Kim, Tae‐Wan Kim, Sang‐Jong Park

et al.

Journal of Geophysical Research Oceans, Journal Year: 2023, Volume and Issue: 128(12)

Published: Dec. 1, 2023

Abstract The Antarctic Peninsula is one region that has recently experienced warming substantially more rapidly than the global mean over past 50 years. Marian Cove located in South Shetland Islands connected to Bransfield Strait via Maxwell Bay between King George Island and Nelson Island. In this study, we identified properties mechanisms of seawater exchange from multiple hydrographic surveys a single bottom‐mounted mooring installed at entrance Cove. Regardless season, current velocity profiles were constant because influence tidal forcing. Wind was primary force determined variation surface current; response, countercurrent occurred near bottom area. We estimated salt transport understand what effects Bay′s saline water intrusion on environment. When daily easterly wind its maximum 18.5 m s −1 , salinity could increase 7.20 × 10 −4 g kg 1 day. addition, average freshwater residence time for quantitative evaluation approximately 9 days. However, reduced less 2 days when there extreme winds.

Language: Английский

Citations

1
Comment on bg-2023-162 DOI Creative Commons

Tyler Cyronak

Published: Jan. 26, 2024

Abstract. In polar regions, glaciers are retreating onto land, gradually widening ice-free coastal waters which known to act as new sinks of atmospheric carbon. However, the increasing delivery inorganic suspended particulate matter (iSPM) with meltwater might significantly impact their capacity contribute carbon sequestration. Here, we present an analysis satellite, meteorological, and SPM data well results coupled physical-biogeochemical model (1D GOTM-ECOSMO-E2E-Polar) newly implemented iSPM group, show its on ecosystem dynamics in warming fjord (Hornsund, European Arctic). Our indicate that a longer melt season (9 days per decade, 1979–2022), loss sea ice cover (44 1982–2021) formation marine habitat after retreat marine-terminating (around 100 km2 1976–2022, 38 % increase total area), glacial has transported loads from land (3.7 g·m−3 reconstructed for 1979–2022). The simulated light limitation induced by input delayed decreased phytoplankton, zooplankton, macrobenthos peak occurrence. areas markedly contributed plankton primary secondary production, burial sediments (5.1, 2.0, 0.9 GgC year, respectively, average 2005–2009 scenario). these values would have been higher 5.0, 2.1 0.1 without input. Carbon was least affected 16 decrease comparison 50 production) thus enhanced land-ocean connectivity should be investigated further context fluxes expanding fjords.

Language: Английский

Citations

0
Reply on CC1 DOI Creative Commons
Marlena Szeligowska

Published: Feb. 16, 2024

Abstract. In polar regions, glaciers are retreating onto land, gradually widening ice-free coastal waters which known to act as new sinks of atmospheric carbon. However, the increasing delivery inorganic suspended particulate matter (iSPM) with meltwater might significantly impact their capacity contribute carbon sequestration. Here, we present an analysis satellite, meteorological, and SPM data well results coupled physical-biogeochemical model (1D GOTM-ECOSMO-E2E-Polar) newly implemented iSPM group, show its on ecosystem dynamics in warming fjord (Hornsund, European Arctic). Our indicate that a longer melt season (9 days per decade, 1979–2022), loss sea ice cover (44 1982–2021) formation marine habitat after retreat marine-terminating (around 100 km2 1976–2022, 38 % increase total area), glacial has transported loads from land (3.7 g·m−3 reconstructed for 1979–2022). The simulated light limitation induced by input delayed decreased phytoplankton, zooplankton, macrobenthos peak occurrence. areas markedly contributed plankton primary secondary production, burial sediments (5.1, 2.0, 0.9 GgC year, respectively, average 2005–2009 scenario). these values would have been higher 5.0, 2.1 0.1 without input. Carbon was least affected 16 decrease comparison 50 production) thus enhanced land-ocean connectivity should be investigated further context fluxes expanding fjords.

Language: Английский

Citations

0
Reply on RC1 DOI Creative Commons
Marlena Szeligowska

Published: Feb. 16, 2024

Abstract. In polar regions, glaciers are retreating onto land, gradually widening ice-free coastal waters which known to act as new sinks of atmospheric carbon. However, the increasing delivery inorganic suspended particulate matter (iSPM) with meltwater might significantly impact their capacity contribute carbon sequestration. Here, we present an analysis satellite, meteorological, and SPM data well results coupled physical-biogeochemical model (1D GOTM-ECOSMO-E2E-Polar) newly implemented iSPM group, show its on ecosystem dynamics in warming fjord (Hornsund, European Arctic). Our indicate that a longer melt season (9 days per decade, 1979–2022), loss sea ice cover (44 1982–2021) formation marine habitat after retreat marine-terminating (around 100 km2 1976–2022, 38 % increase total area), glacial has transported loads from land (3.7 g·m−3 reconstructed for 1979–2022). The simulated light limitation induced by input delayed decreased phytoplankton, zooplankton, macrobenthos peak occurrence. areas markedly contributed plankton primary secondary production, burial sediments (5.1, 2.0, 0.9 GgC year, respectively, average 2005–2009 scenario). these values would have been higher 5.0, 2.1 0.1 without input. Carbon was least affected 16 decrease comparison 50 production) thus enhanced land-ocean connectivity should be investigated further context fluxes expanding fjords.

Language: Английский

Citations

0
Spatial Variations of Ascidian Diets in a Glacial Retreated Fjord of the West Antarctic Peninsula DOI
Dong-U Kim,

In‐Young Ahn,

Jong‐Ku Gal

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Estimates of carbon sequestration potential in an expanding Arctic fjord (Hornsund, Svalbard) affected by dark plumes of glacial meltwater DOI Creative Commons
Marlena Szeligowska, Déborah Benkort, Anna Przyborska

et al.

Biogeosciences, Journal Year: 2024, Volume and Issue: 21(16), P. 3617 - 3639

Published: Aug. 20, 2024

Abstract. In polar regions, glaciers are retreating onto land, gradually widening ice-free coastal waters, which known to act as new sinks of atmospheric carbon. However, the increasing delivery inorganic suspended particulate matter (iSPM) with meltwater might significantly impact their capacity contribute carbon sequestration. Here, we present an analysis satellite, meteorological, and SPM data well results a coupled physical–biogeochemical model (1D GOTM-ECOSMO-E2E-Polar) newly implemented iSPM group show on ecosystem dynamics in warming fjord (Hornsund, European Arctic) numerous shallow-grounded marine-terminating glaciers. Our indicate that longer melt season (9 d per decade, 1979–2022), loss sea ice cover (44 1982–2021) formation marine habitats after retreat (around 100 km2 1976–2022, 38 % increase total area), glacial has transported loads from land (3.7 g m−3 reconstructed for 1979–2022). The simulated light limitation induced by input delayed decreased peaks phytoplankton, zooplankton, macrobenthos. areas still markedly contributed plankton primary secondary production burial sediments (5.1, 2.0, 0.9 Gg C yr−1, respectively, average 2005–2009 scenario). these values would have been 5.0, 2.1, 0.1 yr−1 higher, without input. Since was least affected (a decrease around 16 %, comparison 50 production), enhanced land–ocean connectivity should be investigated further context fluxes expanding fjords.

Language: Английский

Citations

0
Spatial variations of ascidian diets in a glacial retreated fjord of the West Antarctic Peninsula DOI
Dong-U Kim,

In‐Young Ahn,

Jong‐Ku Gal

et al.

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 204, P. 106891 - 106891

Published: Dec. 3, 2024

Language: Английский

Citations

0
Molecular responses of a key Antarctic species to sedimentation due to rapid climate change DOI
Micaela Ruiz, Natalia Servetto, Gastón Alurralde

et al.

Marine Environmental Research, Journal Year: 2022, Volume and Issue: 180, P. 105720 - 105720

Published: Aug. 10, 2022

Language: Английский

Citations

1
Water Mass Transport Changes through the Venice Lagoon Inlets from Projected Sea-Level Changes under a Climate Warming Scenario DOI Open Access
Sara Rubinetti, Ivan Kuznetsov,

Vera Fofonova

et al.

Water, Journal Year: 2023, Volume and Issue: 15(18), P. 3221 - 3221

Published: Sept. 10, 2023

In this study, an ensemble of numerical simulations with a state-of-the-art hydrodynamic model for coastal applications is used to characterize, the first time, expected mid-21st-century changes in circulation and associated sea-level height inside Venice lagoon induced by projected Mediterranean sea level rise atmospheric over Adriatic Sea under RCP8.5 emission scenario. Our results show that water transports through three inlets connecting open are change significantly, consequent significant persistent alterations lagoon. The mass redistributions motivate further studies on implications climate environment.

Language: Английский

Citations

0
The estimates of carbon sequestration potential in an expanding Arctic fjord affected by dark plumes of glacial meltwater (Hornsund, Svalbard) DOI Creative Commons
Marlena Szeligowska, Déborah Benkort, Anna Przyborska

et al.

Published: Sept. 29, 2023

Abstract. In polar regions, glaciers are retreating onto land, gradually widening ice-free coastal waters which known to act as new sinks of atmospheric carbon. However, the increasing delivery inorganic suspended particulate matter (iSPM) with meltwater might significantly impact their capacity contribute carbon sequestration. Here, we present an analysis satellite, meteorological, and SPM data well results coupled physical-biogeochemical model (1D GOTM-ECOSMO-E2E-Polar) newly implemented iSPM group, show its on ecosystem dynamics in warming fjord (Hornsund, European Arctic). Our indicate that a longer melt season (9 days per decade, 1979–2022), loss sea ice cover (44 1982–2021) formation marine habitat after retreat marine-terminating (around 100 km2 1976–2022, 38 % increase total area), glacial has transported loads from land (3.7 g·m−3 reconstructed for 1979–2022). The simulated light limitation induced by input delayed decreased phytoplankton, zooplankton, macrobenthos peak occurrence. areas markedly contributed plankton primary secondary production, burial sediments (5.1, 2.0, 0.9 GgC year, respectively, average 2005–2009 scenario). these values would have been higher 5.0, 2.1 0.1 without input. Carbon was least affected 16 decrease comparison 50 production) thus enhanced land-ocean connectivity should be investigated further context fluxes expanding fjords.

Language: Английский

Citations

0