Spatial location of ice edge in August – September in the Russia’s eastern seas in early 21st century
https://doi.org/10.30758/0555-2648-2020-66-1-38-55
Abstract
The goal of the present paper is to analyze the spatial-temporal variability of ice edge location in the Eastern Arctic seas of Russia (the Laptev, East-Siberian and Chukchi Seas) in late summer (August-September) during the period from 1981 to 2018, as well as to estimate the multi-year changes taking place in the 21st century. The special archive containing the information on latitude position of ice edge at the meridians between the Severnaya Zemlya Archipelago and Alaska was developed; the data of AARI (Arctic and Antarctic Research Institute) specialized observations and satellite images were used.
The inter-annual variability of ice edge position in the total area shows that the entire period 1981–2018 consists of two significantly different parts: the interval from 1981 to 2001 with southern ice edge position (mean latitude in September comprised 74,9° N), and the interval from 2002 to 2018 with northern ice edge position (mean latitude 78,7° N). The difference between the extreme values of ice edge latitude at some meridians reached 9 degrees of latitude (about 1000 km).
During the period from 2002 to 2018, the area of mostly active northward displacement of ice edge moved generally from east to west. From 2002 to 2010, the maximum northward displacement of ice edge was observed in the East-Siberian and Chukchi Seas; in 2007 the extreme northern position of ice edge was registered to the east of the New Siberia Archipelago (mean latitude comprised 84,0° N). However, during 2011–2018, the maximum northward displacement of ice edge was observed in the Laptev Sea; in 2014 the extreme northern position of ice edge was registered to the west of the New Siberia Archipelago (mean latitude comprised 84,5° N).
Typologically, the displacement of ice edge from south to north during the period from 2001–2018 looks like a wave; its crest and sole drift from the Chukchi Sea toward the Laptev Sea. Within the period from 2007 to 2010, the ice edge displacement reached its maximum, and after this, during 2011–2015, the reverse motion from north to south began. One can forecast that within the nearest coming years the ice edge oscillatory southward drift would continue, and by the end of 2020-s one can expect the ice edge to have the position typical for the period 2002–2006.
The author declares that he has no competing interests.
Keywords
ice cover of the Russia’s Arctic seas,
ice edge in late summer,
multi-year variability of ice conditions,
the Chukchi Sea,
the East-Siberian Sea,
the Laptev Sea
Supporting agencies: The article was prepared based on the results of the projects “Study of hydrometeorological processes in the world ocean, seas and estuaries of Russia, Arctic and Antarctic” of the Roshydromet Targeted Scientific and Technical Program (TSTP).
About the Author
A. G. Egorov
State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute
Russian Federation
Russian Federation
References
1. Okeanografia i morskoi led. Oceanography and sea ice. М.: Paulsen, 2011: 432 p. [In Russian].
2. IPCC. Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press, 2013: 1535 p.
3. Semenov V.A., Mokhov I.I., Latif M. The role of the boundaries of sea ice and sea surface temperature in regional climate changes in Eurasia over the last decade. Izvestiya Akademii Nauk. Fizika atmosfery okeana. Proc. of the Russian Academy of Sciences. Physics of Atmosphere and Ocean. 2012, 48, 4: 403–421. [In Russian].
4. Dumanskaia I.O. Ledovye usloviia morei aziatskoi chasti Rossii. Ice conditions of the seas of the Asian part of Russia. Obninsk: IG-SOTsIN, 2017: 640 p. [In Russian].
5. Frolov I.E., Gudkovich Z.M., Karklin V.P., Kovalev E.G., Smolianitskii V.M. Climatic changes of ice conditions in the Arctic seas of the Euroasian shelf. Problemy Arktiki i Antarktiki. Problems of Arctic and Antarctic. 2007, 75: 149–160. [In Russian].
6. Shalina E.V., Bobylev L.P. Change of ice conditions in the Arctic according to satellite observations. Sovremennye problemy distantsionnogo zondirovaniia Zemli iz kosmosa. Current problems in remote sensing of the Earth from space. 2017, 14, 6: 28–41. [In Russian].
7. Gudkovich Z.M., Kirillov A.A., Kovalev E.G., Smetannikova A.V., Spichkin V.A. Osnovy metodiki dolgosrochnich ledovich prognozov dlja arkticheskich morej. Frequency of occurrence of large anomalies of the dates of stable ice formation in the Arctic seas. Leningrad: Gidrometeoizdat, 1972: 348 p. [In Russian].
8. Wiese V.Yu. Osnovy dolgosrochnykh ledovykh prognozov. Fundamentals of long-term ice forecasts. Trudy ANII. Proceedings of the ANII, 1944: 273 p. [In Russian].
9. Gorbunov Yu.A., Karelin I.D., Kuznetsov I.M., Losev S.M., Sokolov A.L. Osnovy fiziko-statisticheskich metodov ledovich prognozov i raschetov dlja arkticheskich morej. Basis of the physical-statistical methodology of ice forecasts and simulations for the Arctic seas with advance period up to 30 days. Leningrad: Gidrometeoizdat, 1983: 288 p. [In Russian].
10. Alekseev G.V., Radionov V.F. Aleksandrov E.I.,Ivanov N.E., Kharlanenkova N.E. Arctic climate change under global warming. Problemy Arktiki i Antarktiki. Arctic and Antarctic Research. 2015, 1 (103): 33–41. [In Russian].
11. Vtoroi otsenochnyi doklad Rosgidrometa ob izmeneniiakh klimata i ikh posledstviiakh na territorii Rossiiskoi Federatsii. Second Roshydromet assessment report on climate change and its consequences in Russian Federation. Ed. V.M. Kattsov, S.M. Semenov. Мoscow: Roshydromet, 2014: 1005 p. [In Russian].
12. Zakharov V.F. Morskie l’dy v klimaticheskoj sisteme. Sea ice in the climate system. St. Petersburg: Gigrometeoizdat, 1996: 213 p. [In Russian].
13. Ivanova N., Johannessen O.M., Pedersen L.T., Tonboe R.T. Retrieval of Arctic sea ice parameters by satellite passive microwave sensors: A comparison of eleven sea ice concentration algorithms. IEEE Transactions on Geoscience and Remote Sensing. 2014, 52 (11): 7233–7246.
Review
For citations:
Egorov A.G. Spatial location of ice edge in August – September in the Russia’s eastern seas in early 21st century. Arctic and Antarctic Research. 2020;66(1):38-55. (In Russ.) https://doi.org/10.30758/0555-2648-2020-66-1-38-55
Views:
804
Email this article 
