刘艳霞,王泽民,刘婷婷

• 1:武汉大学中国南极测绘研究中心
• 2:极地测绘科学国家测绘局重点实验室
• 3:国家海洋局海洋-大气化学与全球变化重点实验室

摘要(Abstract)：

海冰密集度对全球气候变化研究有重要的意义,其反演结果的验证工作也被广泛关注,但结合多源数据反演,同时对两种算法验证的研究较少的现状,该文利用ASPeCt船测海冰密集度数据对Bootstrap算法和NASA Team(NT)算法基于SSM/I数据估算的海冰密集度精度进行验证,并与MODIS影像反演获得的海冰密集度进行对比。研究结果显示两种海冰密集度算法获得的反演结果与ASPeCt船测值偏差分别为2.26%和7.27%,均方根误差分别为11.39%和12.32%。相比之下,MODIS结果与ASPeCt船测海冰密集度比较得到偏差为3%,均方根误差为5.21%。Bootstrap算法、NT算法与ASPeCt船测值比较的偏差和均方根误差显示两种算法精度相近;由于MODIS数据分辨率与ASPeCt船测数据相近,所以其反演精度较优;但因时空分辨率的限制,各种结果都具有一定的不确定性。

关键词(KeyWords)： SSM/I;海冰密集度;Bootstrap算法;NASA Team算法;MODIS

Abstract:

Keywords:

基金项目(Foundation): 测绘地理信息公益性行业科研专项资助项目(201412009);; 国家海洋局海洋—大气化学与全球变化重点实验室开放基金课题(GCMAC1405);; 国家高技术研究发展计划项目(2013AA12A301)

作者(Author): 刘艳霞,王泽民,刘婷婷

DOI: 10.16251/j.cnki.1009-2307.2016.07.018

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