南极罗斯海2012年夏季海冰特征分析  

SEA ICE DISTRIBUTION IN THE ROSS SEA,ANTARCTICA,DURING THE AUSTRAL SUMMER OF 2012

作　　者：赵杰臣[1] 张林[1] 田忠翔[1] 李明[1] 惠凤鸣[2] 李春花[1] 韩红卫[3] 

机构地区：[1]国家海洋局海洋灾害预报技术研究重点实验室国家海洋环境预报中心,北京100081 [2]全球变化与地球系统科学研究院北京师范大学,北京100875 [3]海岸和近海工程国家重点实验室大连理工大学,辽宁大连116024

出　　处：《极地研究》2014年第3期342-351,共10页Chinese Journal of Polar Research

基　　金：中国极地科学战略研究基金(20120317);国家自然科学基金(41006115,41076128);国家十二五极地考察专项(CHIN-ARE2014-01-01,2014-04-01);国家十二五科技支撑计划(2011BAC03B02)资助

摘　　要：利用卫星海冰密集度资料和船基海冰走航观测数据分析了2012年12月至2013年3月南极罗斯海海冰密集度、厚度和浮冰尺寸等参数的时空变化特征。12月下旬罗斯海西侧浮冰区南北向宽约1 000 km,沿雪龙船航线平均密集度在5成以上,平均海冰厚度为100 cm,平均冰上积雪厚度为16 cm,高密集度区域主要为尺寸较小的块浮冰(2—20 m)和小浮冰(20—100 m),低密集度区域主要为大尺寸浮冰(500—2 000 m)。1月和2月罗斯海大部分海域无海冰覆盖,3月海冰迅速冻结,下旬即覆盖整个罗斯海。SSMIS和AMSR2两种卫星遥感数据均能较好反映航线上的真实海冰密集度状况,AMSR2产品与观测符合更好。与1978—2012的气候平均值相比,观测区在2012年夏季冰情偏重。本文的分析结果可帮助我们了解罗斯海海冰的时空特征,为中国后续罗斯海科考提供参考。We analyzed the distribution of sea ice in the Ross Sea during the austral summer of 2012 .Parameters inclu-ding sea ice concentration, thickness, and floe size were investigated using satellite data and ship-based observa-tions.In late December sea ice extent was about 1 000 km from north to south , average sea ice concentration was greater than 50%, average sea ice thickness was about 100 cm, and average snow depth was about 16 cm.In areas of high ice concentration, ice cakes （2-20 m） and small floes （20-100 m） predominated, while in areas of low ice concentration medium floes （100-500 m） and big floes （500-2000 m） predominated.Most of the waters＆amp;nbsp;were ice-free in January and February , but in March sea ice grew rapidly and by April the entire Ross Sea was cov-ered with ice .Sea ice concentrations derived from AMSR 2 and SSMIS were in accordance with the field observa-tions in most locations , with deviations of 15%and 20%, respectively .Therefore , AMSR2 performed better .The results of this paper provide a good reference for future CHINARE Ross Sea cruises .

关 键 词：南极 罗斯海 夏季海冰 走航观测 

分 类 号：P731.15[天文地球—海洋科学]