Icing of the Chukchi Sea in winter

Холопцев, А. В.; Podporin, S. A.

doi:10.1088/1755-1315/867/1/012021

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…When comparing the results obtained with the work [19][20][21], which deals with the construction of general vessel routes under different ice conditions, it is possible to identify a trend that the actual routes during independent navigation pass along the formed polynyas, regardless of the physical principle of their formation. For the eastern sector of the Arctic, similar results have also been reported (22,23), and they may be associated with changes in the water level of the Laptev Sea and the East Siberian Sea, as well as with elements of global warming and the flow of Siberian rivers.…”

Section: Discussionsupporting

confidence: 79%

A study of the timing and duration of icebreaks on shipping routes in the Laptev Sea

Холопцев

Podporin²,

Ol’khovik³

2022

E3S Web Conf.

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The dynamics of the development of the Lena polynya forming in the Laptev Sea and its impact on navigation conditions in the Arctic, in the Laptev Sea, is investigated. The hypothesis is tested that the timing of polynya may have a significant impact on its average growth rate. The results of the GLORYS12v1 global reanalysis and standard methods of mathematical statistics were used in this test. The validity of the hypothesis was confirmed by the example of the section of the polynya located at the mouth of the major navigable channel of the Lena delta Bykovskaya. Stable tendencies of changing the dates of the polynya formation towards earlier dates in the modern period have been revealed. A high probability of improvement of navigation conditions is observed in this region in 2020-2040. However, with further warming of the Siberian climate, the opposite process is possible - the freezing of the polynya that formed too early, which will lead to a colder climate in the region and deterioration of navigation conditions. The selection of general routes for ships in the areas where the polynya is spreading will contribute to more intensive and safer navigation. For this purpose, accurate forecasts of its size and position are required. The relevance of research results for ship traffic forecasting and plans for the use of icebreaker escorts for vessels is noted.

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Section: Discussionsupporting

confidence: 79%

A study of the timing and duration of icebreaks on shipping routes in the Laptev Sea

Холопцев

Podporin²,

Ol’khovik³

2022

E3S Web Conf.

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“…Other studies of navigation in the eastern sector of the Arctic [26,27] and their connection with global trends in ice thickness, ice cohesion and actual water levels [28,29] E3S Web of Conferences 363, 01031 (2022) https://doi.org/10.1051/e3sconf/202236301031 INTERAGROMASH 2022 generally confirm the results obtained and the possibility of their interpretation for the Chukchi Sea.…”

Section: Discussionsupporting

confidence: 74%

Investigating the relationship between interannual closeness of ice coating and ice thickness in the Chukchi sea and water level variations

Холопцев

Podporin²,

Ol’khovik³

2022

E3S Web Conf.

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The hypothesis is tested that there is a significant relationship between changes in water surface level in some areas of the Chukchi Sea and variations in average ice cover thickness and cohesion in them, which can be used to refine short- and long-term forecasts of ice conditions. The results of the GLORYS12v1 global reanalysis and standard methods of mathematical statistics were used for verification. Changes in average ice cohesion were found to be correlated with changes in sea level in some areas from November to June. The correlation between sea level and average ice thickness is traceable only in December. The areas where this correlation is found include numerous sections of the coastal routes of the Northern Sea Route. It is noted that making medium- and long-term forecasts of the development of ice conditions in these areas can be significantly improved by taking into account the current changes in sea level. The identified regularities are important for ensuring safe and sustainable navigation along the Northern Sea Route during the internavigation period for independent navigation of vessels with high ice class and during the winter period when escorted by nuclear-powered icebreakers.

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“…The study was conducted in two stages: 1) Assessment of flood onset dates in the Kolyma River delta for the period from 1993 to 2019 based on information on average daily values of mean water surface level and ice cover of its pre-mouth seashore sections; The data of global reanalysis GLORYS12v1 supported by the European Copernicus Marine Service [10] were used as factual material on ice cover and ESS levels in the months from May to October of 1993-2019. The methodological basis of the global reanalysis for transport routes of ships in the NSR water area was proposed in [11,12].…”

Section: Methodsmentioning

confidence: 99%

Impact of Floods in the Kolyma River Delta on Navigation Conditions in the East Siberian Sea

2022

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Problem of improving the quality of medium- and long-term forecasting of changes in ice conditions in the Northern Sea Route, and in particular in the east Siberian sea, where one of the methods of selecting waterways is the passage of ships in areas of ice-covered polynya. The hypothesis is verified that during the summer months, such changes may be significantly influenced by the timing of the onset of high water in the Kolyma River delta. Data from the global reanalysis GLORYS12v1 supported by the European Copernicus Marine Service were used as factual material on the ice cover and levels of the East Siberian Sea in the months of May to October 1993-2019. The analysis is based on mathematical models of the NEMO family verified by satellite altimetry data. Using the developed methodology, the dates of abrupt changes in level and sea ice extent on the Kolyma River estuarine seashore have been estimated for selected periods of the year. The study uses statistical methods to confirm the validity of the stated hypothesis for a number of areas of the East Siberian Sea, through which the shipping routes of the Northern Sea Route pass. It has been established that the greatest influence of flood timing on ice conditions and navigation conditions in such areas takes place in July. It is shown that early floods in the Kolyma delta generally lead to improvement of ice conditions, while late floods lead to complication of ice conditions. The identified relationships are recommended for use in forecasting changes in ice conditions. It has been suggested that with further climate warming and shifting of flood dates to earlier dates, the complication of ice conditions due to freezing of the formed polynya is not excluded.

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Icing of the Chukchi Sea in winter

Cited by 3 publications

References 11 publications

A study of the timing and duration of icebreaks on shipping routes in the Laptev Sea

A study of the timing and duration of icebreaks on shipping routes in the Laptev Sea

Investigating the relationship between interannual closeness of ice coating and ice thickness in the Chukchi sea and water level variations

Impact of Floods in the Kolyma River Delta on Navigation Conditions in the East Siberian Sea

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