Arctic sea ice coverage and its relation to the surface air temperature in the Northern Hemisphere

• Published in: Ice and Snow
• Main Authors: T. Matveeva A., V. Semenov A., E. Astafyeva S., Т. Матвеева А., В. Семенов А., Е. Астафьева С.
• Other Authors: This study was supported by Russian Foundation for Basic Research (grant № 18-05-60216, 17-29-05098) using results obtained under Program of the Presidium of Russian Academy of Sciences «Climate change: causes, risks, consequences, problems of adaptation and regulation». Estimation of causal relationship climatic processes were carried out according to State target (№ 0148-2019-0009)., Работа выполнена при поддержке РФФИ (гранты № 18-05-60216, 17-29-05098) с использованием результатов, полученных в рамках Программы Президиума РАН «Изменения климата: причины, риски, последствия, проблемы адаптации и регулирования». Оценки причинно-следственных связей климатических процессов проводились в рамках Госзадания (тема № 0148-2019-0009).
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: IGRAS 2020
• Subjects: Arctic climate;Arctic sea ice coverage;climate variability;surface air temperature; арктические морские льды;изменчивость климата;климат Арктики;приземная температура воздуха; Annals of Glaciology; Arctic; Barents Sea; Kara-Laptev; laptev; Laptev Sea; North Atlantic; North Atlantic oscillation; Sea ice; The Cryosphere
• Online Access: https://ice-snow.igras.ru/jour/article/view/778; https://doi.org/10.31857/S2076673420010029

The linear relationship between average monthly anomalies of the ice coverage in the Arctic seas and the surface air temperature over the land in the Northern hemisphere in March and September was analyzed for the purpose of finding regions with statistically significant correlations. Possible mechanisms of the revealed interrelations are discussed. Data on the surface temperature and the ice concentration from Met Office Hadley Centre were used in this study. A negative correlation of the sea ice with the temperature in the land regions adjacent to the seas, as well as a number of remote relations was revealed. Specifically, statistically significant relations were found between anomalies of the ice area in the Laptev Sea in September with the temperature anomalies in the Mediterranean region, as well as with the temperature anomalies in Central Asia. In most cases, such relationships may be explained by the influence of atmospheric circulation, including the North Atlantic Oscillation, the Arctic Oscillation, the Pacific Decadal Oscillation, and variability in the intensity of the atmospheric centers of action. Characteristics of seasonal variations of the sea ice coverage and climatic trends together with variability and autocorrelation of the coverage anomalies are considered. The largest reduction in the ice area is observed for the recent decades in the Barents Sea in winter while in the Kara, Laptev and East Siberian seas - in summer. Проанализирована линейная связь среднемесячных аномалий площади морского льда в арктических морях и приземной температуры воздуха над сушей Северного полушария в марте и сентябре. Установлена отрицательная корреляция с температурой в прилегающих к морям регионах суши, а также ряд удалённых связей, которые можно объяснить влиянием атмосферной циркуляции. Наибольшее сокращение площади морских льдов зимой в последние десятилетия наблюдаются в Баренцевом море, в летний – в Карском, Лаптевых и Восточно‑Сибирском морях.