极地研究2025，Vol.37Issue(2)：275-284,10.DOI:10.13679/j.jdyj.20230055
南极阿蒙森海一次海雾过程分析
Sea fog in the Amundsen Sea,Antarctica:A case study
摘要
Abstract
Sea fog can seriously threaten maritime activities by reducing visibility,but studies on sea fog in the Antarctic region are rare.China's R/V Xuelong encountered a severe sea fog event in the Amundsen Sea in January 2019.This study analyzed the sea fog process using ship-based observations and ERA5 data ob-tained during the event.Results revealed that the sea fog event persisted for approximately 48 h during January 17-19,2019.The period of dense fog(visibility:<500 m)accounted for approximately 40%of the entire duration of the event,meaning that it was a long-lasting and intense sea fog event in the Southern Ocean.Analysis revealed that the main fog area was affected mainly by a low pressure system over the Southern Ocean.Owing to weak convergence uplift in the upper layers,the heat and moisture advection brought by the northerly wind maintained a saturated and stable structure in the lower layer.Meanwhile,the weak surface wind in the main fog area inhibited vertical transport of turbulence,and maintained the at-mospheric thermal structure and fog droplet density,which together resulted in this long-lasting sea fog event.关键词
海雾/走航观测/平流作用/南极地区Key words
sea fog/ship-based observation/advection/Antarctica引用本文复制引用
江可悦,韩博,孙启振,梁文骏,杨清华..南极阿蒙森海一次海雾过程分析[J].极地研究,2025,37(2):275-284,10.基金项目
广东省海洋经济发展(海洋六大产业)专项重点项目(粤自然资合[2022]18号)资助 （海洋六大产业）
