Ice-free period detection method in the Arctic coastal zone

Shabanov P A; Shabanova N N

doi:10.2205/2020ES000725

ICE-FREE PERIOD DETECTION METHOD IN THE ARCTIC COASTAL ZONE Ice-free period detection method in the Arctic coastal zone

АА Аа

Опубликовано в Russian Journal of Earth Sciences · Рубрика: ОРИГИНАЛЬНЫЕ СТАТЬИ

DOI: https://doi.org/10.2205/2020ES000725

Получено: 25.12.2020 Одобрено: 25.12.2020 Опубликовано: 25.12.2020 Язык публикаций: ENG

Авторы

Shabanov P A

Shabanova N N

Shabanov P A

Shirshov Institute of Oceanology RAS

Shabanova N N

Lomonosov Moscow State University

АННОТАЦИЯ

An advanced methodology for the detection and quantification of the ice-free period in the Arctic coastal zone is proposed. Ice-free period (IFP) dynamics is analyzed in the Kara Sea coastal zone near "Marresalya" and "Amderma" stations using long-term satellite data about sea ice concentrations. In a new method an advanced approach for defining the IFP characteristics (starting/ending dates and duration) was applied in addition to the conventional use of 15% sea ice concentration threshold. We provide estimates of the mean statistics and linear trends in the IFP characteristics using three long-term satellite-based sea ice concentration datasets: OSI SAF, NSIDC, JAXA and compare them to the estimates based upon direct observations on stations. Mean IFP durations and ending dates as well as linear trends derived from satellite data show a close comparability with observations with differences ranging within 2-7 days for IFP durations and within 0.01-0.05 days/year for IFP ending date trends. At the same time, strong deviations were found for both mean and long-term trends of the IFP starting dates, specifically showing negative trends in the satellite-derived starting dates which is not confirmed by observations. This results in a moderate agreement on trend estimates in IFP durations between satellite data and observations, while the mean characteristics are in a very good agreement and implies the necessity of more careful look onto representativeness of satellite data in the near-coastal zone during the onset season.

КЛЮЧЕВЫЕ СЛОВА

Ice-free period; open water season, sea ice concentration, arctic coastal zone, climate change

Финансирование

The research was supported by the Russian Ministry of Science and Higher Education, agreement No. 14.616.21.0102. Unique project ID is RFMEFI61618X0102.

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Гвишиани Алексей Джерменович

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Дзебоев Борис Аркадьевич

rjes@wdcb.ru

Ведущий редактор

Кедров Эрнест Олегович

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Ответственный секретарь

Карева Наталья Александровна

rjes@wdcb.ru

Контент доступен под лицензией Creative Commons «С указанием авторства версии 4.0 Международная» Creative Commons

ГОСТ

, Ice-free period detection method in the Arctic coastal zone // Russian Journal of Earth Sciences. 2020. №. 6. С. -. DOI: https://doi.org/10.2205/2020ES000725. (дата обращения: 07.09.2026).

MLA

Shabanov P A, . "Ice-free period detection method in the Arctic coastal zone." Russian Journal of Earth Sciences 20.6 (2020): -. DOI: https://doi.org/10.2205/2020ES000725.

APA

, (2020). Ice-free period detection method in the Arctic coastal zone. Russian Journal of Earth Sciences, 20(6), -. https://doi.org/10.2205/2020ES000725

Chicago

Shabanov P A, . "Ice-free period detection method in the Arctic coastal zone." Russian Journal of Earth Sciences 20, no. 6 (2020): -. https://doi.org/10.2205/2020ES000725.

WIKI

{{cite journal | author = , | title = Ice-free period detection method in the Arctic coastal zone | journal = Russian Journal of Earth Sciences | year = 2020 | volume = 20 | issue = 6 | pages = - | doi = 10.2205/2020ES000725 }}

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ICE-FREE PERIOD DETECTION METHOD IN THE ARCTIC COASTAL ZONE Ice-free period detection method in the Arctic coastal zone

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