Major Baltic Inflow Statistics – Revised

Mohrholz, Volker

doi:10.3389/fmars.2018.00384

Cited by 115 publications

(169 citation statements)

References 32 publications

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“…In addition to the Baltic Sea mean SSS and the gradient, the pronounced variability with a time scale of about 30 years is found in precipitation at selected stations (e.g., BACC II Author Team, , their Figure 5.8) or averaged over Sweden (e.g., Hellström & Lindström, , their Figure ), total river runoff in the Baltic Sea basin (e.g., Meier & Kauker, , their Figure ), barotropic saltwater inflows (Mohrholz, , his Figure ), and volume mean salinity of the Baltic Sea (e.g., Winsor et al, , their Figure 15; Meier & Kauker, , their Figure 8). Also, wind has a variability on the multidecadal time scale (e.g., BACC II Author Team, ).…”

Section: Discussionmentioning

confidence: 96%

“…Barotropic saltwater inflows contribute approximately half to the total salt import into the Baltic Sea (Mohrholz, ). According to measurements, changes in Skagerrak deep water salinity are small and likely not a source of long‐term changes in Baltic Sea salinity (not shown).…”

Section: Discussionmentioning

confidence: 99%

“…These events happen sporadically, mainly during winter, with a maximum of a few times a year. Since 1887, frequency and intensity of major Baltic inflows did not change systematically although a pronounced multidecadal variability with a main period of 25–30 years was found (Mohrholz, ). Hence, long‐term changes in salinity are likely driven by changes in wind and river runoff (Meier & Kauker, ).…”

Section: Introductionmentioning

confidence: 99%

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Changing Salinity Gradients in the Baltic Sea As a Consequence of Altered Freshwater Budgets

Kniebusch

Meier

Radtke

2019

Geophysical Research Letters

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Climate change is expected to enhance the hydrological cycle in northern latitudes reducing the salinity in the Baltic Sea, a land‐locked marginal sea with a large catchment area located in northern Europe. With the help of ocean simulations forced by historical atmospheric and hydrological reconstructions and local observations, we analyzed long‐term changes in the sea surface salinity of the Baltic Sea as well as its latitudinal gradient. The variability of both is dominated by multidecadal oscillations with a period of about 30 years, while both atmospheric variables, wind and river runoff, contribute to this variability. Centennial changes show a statistically significant positive trend in the North‐South gradient of sea surface salinity for 1900–2008. This change is mainly attributed to increased river runoff from the northernmost catchment indicating a footprint of the anthropogenic impact on salinity with consequences for the marine ecosystem and species distributions.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Changing Salinity Gradients in the Baltic Sea As a Consequence of Altered Freshwater Budgets

Kniebusch

Meier

Radtke

2019

Geophysical Research Letters

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“…c). One MBI in 2014 (MBI 2014) and two following moderate inflows in 2015 and 2016 (represent as MBI 2015 and MBI 2016 in this study) entered the Baltic Sea before our sampling and propagated as dense bottom currents influencing the deep water (Mohrholz ). Information on these MBIs can be found in Supporting Information Table S4.…”

Section: Resultsmentioning

confidence: 97%

Impact of human disturbance on the biogeochemical silicon cycle in a coastal sea revealed by silicon isotopes

Zhang

Sun

Dai

et al. 2019

Limnology & Oceanography

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Biogeochemical silicon (Si) cycling in coastal systems is highly influenced by anthropogenic perturbations in recent decades. Here, we present a systematic study on the distribution of stable Si isotopes of dissolved silicate (δ30SiDSi) in a highly eutrophic coastal system, the Baltic Sea. Besides the well‐known processes, diatom production and dissolution regulating δ30SiDSi values in the water column, we combined field data with a box model to examine the role of human disturbances on Si cycling in the Baltic Sea. Results reveal that (1) damming led to increased δ30SiDSi values in water but had little impacts on their vertical distribution; (2) decrease in saltwater inflow due to enhanced thermal stratification had negligible impacts on the δ30SiDSi distribution. An atypical vertical distribution of δ30SiDSi with higher values in deep water (1.57–1.95‰) relative to those in surface water (1.24–1.68‰) was observed in the central basin. Model results suggest the role of enhanced biogenic silica (BSi) deposition and subsequently regenerated dissolved silicate (DSi) flux from sediments. Specifically, eutrophication enhances diatom production, resulting in elevated exports of highly fractionated BSi to deep water and sediments. In situ sedimentary geochemical processes, such as authigenic clay formation, further fractionate Si isotopes and increase pore‐water δ30SiDSi values, which then leads to pore‐water DSi flux carrying higher δ30SiDSi compositions into deep water. Our findings provide new quantitative information on how the isotope‐based Si cycle responds to human perturbations in coastal seas and shed lights on shifts of Si export to open ocean.

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“…Наметившаяся тенденция уменьшения концентрации растворенного кислорода за анализируемый период времени по сравнению с литературными источ-никами связана, с одной стороны, с длительным периодом (с 1980-х годов и, вероятно, до 2014 г.) редких по частоте ЗСВ [18]. С другой стороны, Гданьский бассейн находится под сильным влиянием материкового стока, определяющего большое поступление органического вещества (ОВ) в море [7,9].…”

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Suboxic and anoxic conditions in the Gdansk basins’ deep water (the Baltic sea)

2019

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Variability of oxygen and hydrogen sulphide concentrations in the Gdansk basins deep water of the Baltic Sea for the last 25 years was analyzed. It was shown that suboxic and anoxic conditions in deep water were mainly determined by Baltic inflow frequency and intensity. Oxygen concentration in the bottom layer of the Gdansk basins increased strongly in 13 months after Major Baltic Inflow events (MBI). There were three periods of strong increasing of dissolve oxygen concentration in deep water since 1992 till 2018 after MBI in 1993, in 2003 and 20142016. It was shown that at the bottom of the Gdansk basins hydrogen sulphide was detected during 79 months till 22.5 years after MBI. Quality evaluation of dissolved oxygen distribution reanalysis was also conducted in this work. It can be noted good reproduction of field data by the reanalysis in its quality part; however, in most cases the observable maximum concentrations in dissolved oxygen distribution are understated, sometimes even several times.

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Major Baltic Inflow Statistics – Revised

Cited by 115 publications

References 32 publications

Changing Salinity Gradients in the Baltic Sea As a Consequence of Altered Freshwater Budgets

Changing Salinity Gradients in the Baltic Sea As a Consequence of Altered Freshwater Budgets

Impact of human disturbance on the biogeochemical silicon cycle in a coastal sea revealed by silicon isotopes

Suboxic and anoxic conditions in the Gdansk basins’ deep water (the Baltic sea)

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