2003 - 2022年日本海鞑靼海峡海冰变化

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-02-10 DOI:10.1016/j.coldregions.2025.104450

Qingkang Hou , Yu Yan , Yingjun Xu , Yuqing Zhou

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引用次数: 0

摘要

分析日本海海冰的长期变化对于区域气候变化研究、预防与冰有关的灾害和确保海上安全至关重要。然而，对鞑靼海峡海冰的长期分析仍然有限。本研究利用地球观测系统先进微波扫描辐射计和先进微波扫描辐射计2号（AMSR-E/2）海冰浓度数据，推导了2003年至2022年位于日本海的关键冰区鞑靼海峡内的海冰指标。初步采用双差法对AMSR-2产品进行了标定，大大降低了误差。利用校正后的海冰数据，研究了海冰的时空特征，并分析了影响海冰变化的潜在因素。结果表明：2003 - 2022年，鞑靼海峡的海冰范围和年平均海冰面积呈现波动，但没有明显的下降趋势。然而，年最大海冰面积（- 1.02% /年，r = - 0.54, p = 0.02）和海冰浓度(- 0.38% /年，r = - 0.65, p <；0.01)。海冰状况一般在1月初达到严冻期，持续时间近3个月（87.58±10.08天）。鞑靼海峡的海冰具有显著的空间异质性，其浓度由北向南递减。大部分地区海冰浓度呈下降趋势，特别是中部海北部和东部地区，而其他地区则呈边缘不显著的增加趋势。最大海冰边缘平均为561.34±21.19 km，主要向南延伸至48.8°N左右。海冰与气温和累积冰点日数的显著相关表明，局地天气因子在海冰面积变化中起着至关重要的作用。此外，海冰范围与JFM期间的西太平洋副热带高压（WPSH）指数（r = 0.49, p = 0.04）和1月份的太平洋年代际涛动（PDO）指数（r = 0.51, p = 0.02）的相关性表明，西太平洋副热带高压和PDO都可能是影响海冰变率的大尺度气候因子。这些结果为海冰灾害监测、风险管理和区域气候变化研究提供了重要的见解。

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Sea ice variations in the Tatar Strait, Sea of Japan from 2003 to 2022

Analyzing long-term sea ice variations in the Sea of Japan is crucial for regional climate change studies, preventing ice-related disasters, and ensuring maritime safety. However, long-term analyses of sea ice in the Tatar Strait remain limited. This study utilizes the Advanced Microwave Scanning Radiometer for the Earth Observing System and the Advanced Microwave Scanning Radiometer 2 (AMSR-E/2) sea ice concentration data to derive sea ice metrics within the Tatar Strait, a pivotal freezing zone located in the Sea of Japan, spanning the period from 2003 to 2022. The double differencing method is initially applied to calibrate the AMSR-2 product, significantly reducing the errors. The calibrated sea ice dataset is then utilized to investigate the spatiotemporal characteristics and analyze potential factors influencing sea ice variations. The results indicate that, between 2003 and 2022, the sea ice extent and annual average sea ice area in the Tatar Strait exhibited fluctuations without a significant downward trend. However, there was a noticeable decline in the annual maximum sea ice area (−1.02 % per year, r = −0.54, p = 0.02) and sea ice concentration (−0.38 % per year, r = −0.65, p < 0.01). Sea ice conditions generally reach the severe freezing period in early January and last for nearly three months (87.58 ± 10.08 days). The sea ice in the Tatar Strait exhibits significant spatial heterogeneity, with concentrations decreasing from north to south. Most areas show a decreasing trend in sea ice concentration, especially in the northern region and the eastern zone of the central sea, while other regions experience a marginal insignificant increase. The maximum sea ice edge averages 561.34 ± 21.19 km, primarily extending south to around 48.8°N. The significant correlations between sea ice and both air temperature and cumulative freezing degree days suggest that local synoptic factors play a crucial role in influencing sea ice area variations. Furthermore, the correlations between sea ice extent and the West Pacific Subtropical High (WPSH) index during JFM (r = 0.49, p = 0.04) and the Pacific Decadal Oscillation (PDO) index in January (r = 0.51, p = 0.02) indicate that both the WPSH and PDO may play a significant role as large-scale climate factors influencing sea ice variability. These results provide crucial insights for sea ice disaster monitoring, risk management, and regional climate change studies.

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.