Seasonality of Heat Exchange on the Barents Sea Surface

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-01 DOI:10.1134/s0001437023070196

A. A. Sumkina, K. K. Kivva, V. V. Ivanov

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Abstract

Over the past 40 years, the Arctic, and the Barents Sea in particular, has undergone considerable changes in the state of the atmosphere, sea ice, and water column, which are presumably beginning start to affect the duration of the warm period (when the sea uptakes heat from the atmosphere) and the cold period of the year (when the sea loses heat to the atmosphere). This study considers the interannual variability of the onset dates and duration of the warm and the cold periods of the year. Data on short- and long-wave radiation, as well as on sensible and latent atmospheric heat fluxes from the ERA5 reanalysis were used. HDBSCAN cluster analysis method has made it possible to identify four regions (clusters) with synchronous dynamics of the dates of transition of the heat balance through zero. Several delineated regions are located on the pathway of the Atlantic origin water in the Barents Sea. A vast region has been distinguished in the northern part of the sea, where the inflow of the cold Arctic water occurs, providing cooling and freshening of Atlantic water transported from the Norwegian Sea. A shift in the date of heating onset in the southern and southeastern parts to later dates (4–5 days per 10 years) and a shift to earlier dates in the northern and northeastern parts of the sea (4–5 days per 10 years) have been detected. For heating termination dates, the opposite situation shift compared to the heating onset dates is observed. In the southern part, there has been a shift to earlier dates (1–2 days per 10 years), and in the northern part, to later dates (4–5 days per 10 years).

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巴伦支海海面热交换的季节性

摘要在过去的 40 年中，北极地区，尤其是巴伦支海的大气、海冰和水柱状况发生了巨大变化，这可能开始影响一年中温暖期（海洋从大气中吸收热量）和寒冷期（海洋向大气中散失热量）的持续时间。本研究考虑了一年中温暖期和寒冷期开始日期和持续时间的年际变化。研究使用了ERA5再分析的短波和长波辐射数据，以及大气显热通量和潜热通量数据。通过 HDBSCAN 聚类分析方法，可以确定四个区域（聚类）的热平衡过零日期具有同步动态。几个划定的区域位于巴伦支海的大西洋源水路径上。巴伦支海北部有一个广阔的区域，那里有北极冷水流入，为从挪威海运来的大西洋水提供冷却和清新。已发现南部和东南部地区开始升温的日期向后移动（每 10 年 4-5 天），而北部和东北部地区则向前移（每 10 年 4-5 天）。在加热终止日期方面，观察到与加热开始日期相反的情况变化。在南部地区，日期有所提前（每 10 年 1-2 天），而在北部地区，日期则有所推迟（每 10 年 4-5 天）。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.