| 利用CryoSat-2卫星测高资料确定北极海冰干舷高 |
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| 引用本文： | 吴星泉,张胜军,车德福.利用CryoSat-2卫星测高资料确定北极海冰干舷高[J].测绘通报,2019,0(7):64-68. |
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| 作者姓名： | 吴星泉 张胜军 车德福 |
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| 作者单位： | 东北大学资源与土木工程学院,辽宁沈阳,110819;东北大学资源与土木工程学院,辽宁沈阳,110819;东北大学资源与土木工程学院,辽宁沈阳,110819 |
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| 基金项目： | 国家自然科学基金（N41804002；41871310）；中央高校基本科研业务专项资金（N170103009；N17241004）；武汉大学地球空间环境与大地测量教育部重点实验室开放基金（17-01-04） |
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| 摘 要： | 卫星测高技术的发展使得大空间尺度探测海冰成为可能，海冰干舷高是反演海冰厚度的关键参量，获取精确的海冰干舷高对海冰探测及了解全球气候变化均具有重要的作用。本文基于近3年获取的CryoSat-2卫星SAR模式测高资料，在60°N—88°N纬度带内的北极海域通过设定阈值筛选可用的观测数据，并在此基础上计算2015—2017年间月平均海冰干舷高，最后通过IceBridge航飞数据的时空匹配验证了本文获取的干舷高计算结果是可靠的。
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| 关 键 词： | 卫星测高 海冰干舷高 CryoSat-2 SAR模式 |
| 收稿时间： | 2018-10-18 |
| 修稿时间： | 2019-03-16 |
Arctic sea ice freeboard determination from CryoSat-2 satellite altimetry data |
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| WU Xingquan,ZHANG Shengjun,CHE Defu.Arctic sea ice freeboard determination from CryoSat-2 satellite altimetry data[J].Bulletin of Surveying and Mapping,2019,0(7):64-68. |
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| Authors: | WU Xingquan ZHANG Shengjun CHE Defu |
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| Institution: | School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China |
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| Abstract: | The technology of satellite altimetry has made it possible to detect sea ice at large spatial scales, while the retrieved sea ice freeboard is a key parameter for inverting sea ice thickness. Moreover, obtaining accurate freeboard is significant for sea ice detection and the understanding of global climate change. Based on the CryoSat-2 satellite SAR mode altimetry data accumulated in the past three years, this paper selectes the available observation data by setting thresholds in the Arctic within the 60°N-88°N latitude zone, and calculates the average monthly sea ice freeboard during 2015-2017. The results of the calculated freeboard in the research region are reliable according to the verification with the space-time matched measurements of IceBridge projects. |
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| Keywords: | satellite altimetry sea ice freeboard CryoSat-2 SAR mode |
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