Distribution Characteristics and Influencing Factors of Sea Ice Leads in the Weddell Sea, Antarctica-Reference-Cited by-同舟云学术

Distribution Characteristics and Influencing Factors of Sea Ice Leads in the Weddell Sea, Antarctica

Published:2023-11-30 Issue:23 Volume:15 Page:5568
ISSN:2072-4292
Container-title:Remote Sensing
language:en
Short-container-title:Remote Sensing

Author:

Wang Yueyun¹,Ji Qing²^ORCID,Pang Xiaoping¹³^ORCID,Qu Meng⁴^ORCID,Cha Mingxing¹,Zhang Fanyi¹,Yan Zhongnan¹,He Bin¹^ORCID

Affiliation:

1. Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China

2. School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China

3. Key Laboratory of Polar Environment Monitoring and Public Governance, Wuhan University, Ministry of Education, Wuhan 430079, China

4. Key Laboratory of Polar Science of Ministry of Natural Resources, Polar Research Institute of China, Shanghai 200136, China

Abstract

The characteristics of sea ice leads (SILs) in the Weddell Sea are an important basis for understanding the mechanism of the atmosphere–ocean system in the Southern Ocean. In this study, we derived the sea ice surface temperature (IST) of the Weddell Sea from MODIS thermal images and then generated a daily SIL map for 2015 and 2022 by utilizing the iterative threshold method on the optimised MOD35 cloud-masked IST. The results showed that SIL variations in the Weddell Sea presented remarkable seasonal characteristics. The trend of the SIL area exhibited an initial rise followed by a decline from January to December, characterised by lower values in spring and summer and higher values in fall and winter. SILs in the Weddell Sea were predominantly concentrated between 70~78°S and 60~30°W. The coastal spatial distribution density of the SILs exceeded that of offshore regions, peaking near the Antarctic Peninsula and then near Queen Maud Land. The SIL variation was mainly influenced by dynamical factors, and there were strong positive correlations between the wind field, ocean currents, and sea-ice motion.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Link

https://www.mdpi.com/2072-4292/15/23/5568/pdf

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