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In 2023, ice started to reform in the Laptev Sea in Russia at the end of January, according to data from the National Snow and Ice Data Center (NSIDC). In 2020, the Laptev Sea has not frozen in early November for the first time on record since 1979. In that month, the sea ice extent was measured at 0.8 million square kilometers. Over 30 years prior to 2020, the Laptev Sea ice extent in November was stable at 0.87 million square kilometers in almost every year.

Average monthly Laptev Sea ice extent from January 1980 to July 2023 (in million square kilometers)

Characteristic	1980	1985	1990	1995	2000	2005	2010	2015	2019	2020	2021	2022	2023
Dec	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	-
Nov	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.8	0.87	0.87	-
Oct	0.79	0.77	0.72	0.49	0.72	0.6	0.6	0.59	0.35	0.07	0.42	0.57	-
Sep	0.46	0.41	0.28	0.12	0.24	0.14	0.21	0.09	0.11	0.01	0.06	0.26	-
Aug	0.49	0.56	0.34	0.24	0.36	0.3	0.35	0.25	0.19	0.06	0.05	0.34	-
Jul	0.75	0.8	0.64	0.6	0.71	0.61	0.59	0.61	0.42	0.22	0.3	0.56	0.62
Jun	0.84	0.86	0.78	0.82	0.8	0.8	0.78	0.85	0.75	0.72	0.69	0.76	0.81
May	0.87	0.87	0.86	0.87	0.86	0.87	0.87	0.87	0.86	0.86	0.85	0.86	0.87
Apr	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87
Mar	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87
Feb	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87
Jan	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87	0.87

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Release date

August 2023

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Region

Russia

Survey time period

January 1980 to July 2023

Supplementary notes

The figures were obtained from the following source:
Fetterer, F., K. Knowles, W. N. Meier, M. Savoie, and A. K. Windnagel. 2017, updated daily. Sea Ice Index, Version 3. [G02135]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: https://doi.org/10.7265/N5K072F8. [November 3, 2020].

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