Study of ice cover impact on hydrodynamic processes in the Curonian Lagoon through numerical modeling

Idzelytė, Rasa; Mėžinė, Jovita; Zemlys, Petras; Umgiesser, Georg

doi:10.1016/j.oceano.2020.04.006

Cited by 7 publications

(6 citation statements)

References 30 publications

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“…Ice in the Curonian Lagoon has become a trending topic in the recent years, due to its already evident changes as seen from the historical observations (Jakimavičius et al, 2019), remote sensing (Kozlov et al, 2020;Idzelytė et al, 2019), as well as modelling studies of future projections (Idzelytė and Umgiesser, 2021;Jakimavičius et al, 2019). The decreasing ice parameters impact on the hydrodynamics of the lagoon suggest a possible increase of water flow and saltwater intrusions, as well as shorter WRT during the ice cover season (Idzelytė et al, 2020;Umgiesser et al, 2016). Although, the role of ice for controlling WRT is far less than the increased fluxes from the discharging rivers.…”

Section: Ice Thickness In the Lagoonmentioning

confidence: 99%

Coupled hydrological and hydrodynamic modelling application for climate change impact assessment in the Nemunas River watershed–Curonian Lagoon–south-eastern Baltic Sea continuum

Idzelytė

Čerkasova

Mėžinė

et al. 2023

Preprint

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Abstract. We analyse the cumulative impacts of climate change in a complex basin-lagoon-sea system continuum, which covers the Nemunas River basin, Curonian Lagoon, and the south-eastern part of the Baltic Sea. A unique state-of-the-art coupled modelling system, consisting of hydrological and hydrodynamic models, has been developed and used for this purpose. Results of four regional downscaled models from the Rossby Centre high-resolution regional atmospheric climate model have been bias-corrected using in situ measurements, and were used as forcing to assess the changes that the continuum will undergo until the end of this century. Results show that the Curonian Lagoon will be subjected to higher river discharges that in turn increase the outgoing fluxes into the Baltic Sea. Through these higher fluxes, both the water residence time and saltwater intrusion event frequency will decrease. Most of these changes will be more pronounced in the northern part of the lagoon, which is more likely to be influenced by the variations in the Nemunas River discharge. The southern part of the lagoon will experience lesser changes. Water temperatures in the entire lagoon and the south-eastern Baltic Sea will steadily increase, and salinity values will decrease. However, the foreseen changes in physical characteristics are not of the scale suggesting significant shifts in the ecosystem functioning, but are expected to manifest in some quantitative alterations in the nutrient retention capacity. However, some ecosystem services such as ice fishing are expected to vanish completely due to the loss of ice cover.

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Section: Ice Thickness In the Lagoonmentioning

confidence: 99%

Coupled hydrological and hydrodynamic modelling application for climate change impact assessment in the Nemunas River watershed–Curonian Lagoon–south-eastern Baltic Sea continuum

Idzelytė

Čerkasova

Mėžinė

et al. 2023

Preprint

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“…Many numerical forecasting models suffer from a lack of calibration data because relevant ice cover properties such as ice extent, concentration, thickness, drift and deformation are difficult and expensive to monitor [41]. In turn, the accurate knowledge of ice conditions obtained from satellite data leads to a more adequate modeling of hydrodynamic processes and circulation patterns in the Curonian Lagoon [42].…”

Section: Discussionmentioning

confidence: 99%

Remote Sensing of Ice Conditions in the Southeastern Baltic Sea and in the Curonian Lagoon and Validation of SAR-Based Ice Thickness Products

et al. 2020

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Here we analyze ice conditions in the Southeastern Baltic (SEB) Sea and in the Curonian Lagoon (CL) using spaceborne synthetic aperture radar (SAR) data combined with in-situ measurements from coastal stations during four winter seasons between 2009–2013. As shown, the ice conditions in the SEB and in the CL are strongly varying from year to year and do not always correlate with each other. In the SEB, ice cover may form only within 5–15 km band along the coast or spread up to 100 km offshore covering almost the entire region. The mean ice season duration here is 45 days. The CL is almost fully ice-covered every year apart of its northern part subjected to sea water inflow and active shipping. The ice regime is also more stable here, however, it also possesses multiple periods of partial melting and re-freezing. In this study we also perform a validation of three SAR-based ice thickness products (Envisat ASAR 0.5-km and 1-km, and RADARSAT-2 0.5-km) produced by the Finnish Meteorological Institute versus in-situ measurements in the CL. As shown, all satellite products perform rather well for the periods of gradual ice thickness growth. When the ice thickness grows rapidly, all products underestimate the observed values by 10–20 cm (20–50%). The best results were obtained for the RADARSAT-2 ice thickness product with the highest R2 value (0.68) and the root mean square error around 8 cm. The results of the study clearly show that multi-mission SAR data are very useful for spatial and temporal analysis of the ice regime in coastal waters and semi-enclosed shallow water bodies where the number of field observations is insufficient or lacking.

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“…It is the largest coastal lagoon in Europe, covering an area of about 1584 km 2 . The Curonian Lagoon is connected to the sea by the narrow Klaipėda Strait and separated from the sea by the sandy Curonian Spit (Idzelytė et al, 2020). The locations of the study sites were chosen after an assessment of potential sources of pollution.…”

Section: Study Areamentioning

confidence: 99%

Evaluation of haematological and biochemical stress biomarkers and physiological parameters in Carassius gibelio caught in the coastal zone of the Curonian lagoon

Žvynakytė,

Pažusienė,

Dainys

et al. 2024

27-Osios Jaunųjų Mokslininkų Konferencijos „Mokslas – Lietuvos Ateitis“ Teminės Konferencijos DARNI APLINKA Straipsnių Rinkinys

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This study aimed to assess the health status of Carassius gibelio, a comparatively tolerant fish species, in the largest coastal lagoon in Europe – the Curonian Lagoon. Haematocrit and glucose levels were evaluated as reliable biomarkers of stress responses in fish. Additionally, non-specific physiological biomarkers, including hepatosomatic index and condition factor, were utilized to assess the environmental quality of the Curonian Lagoon. Fish samples were collected from two sites: the southern part of Klaipėda port, known as Kiaulės Nugara Island, and the central part of the Curonian Lagoon near Ventė Cape. Based on the multi-biomarker responses of C. gibelio, differences were observed between the two sampling sites, but not statistically significant. Consequently, C. gibelio cannot be recommended as a suitable bioindicator of environmental pollution and is not recommended for biomonitoring surveys of the Curonian Lagoon.

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Study of ice cover impact on hydrodynamic processes in the Curonian Lagoon through numerical modeling

Cited by 7 publications

References 30 publications

Coupled hydrological and hydrodynamic modelling application for climate change impact assessment in the Nemunas River watershed–Curonian Lagoon–south-eastern Baltic Sea continuum

Coupled hydrological and hydrodynamic modelling application for climate change impact assessment in the Nemunas River watershed–Curonian Lagoon–south-eastern Baltic Sea continuum

Remote Sensing of Ice Conditions in the Southeastern Baltic Sea and in the Curonian Lagoon and Validation of SAR-Based Ice Thickness Products

Evaluation of haematological and biochemical stress biomarkers and physiological parameters in Carassius gibelio caught in the coastal zone of the Curonian lagoon

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