项目名称: 北极冰间水道反演和敏感性试验
项目编号: No.41206184
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 海洋科学
项目作者: 李明
作者单位: 国家海洋环境预报中心
项目金额: 24万元
中文摘要: 利用美国雪冰中心(NSIDC)提供的MODIS/Terra 1km分辨率的冰温数据,基于热红外和可见光辐射特性的反演方法MPA(MODIS potential open water algorithm)方法,反演得到全北极的冰间水道和海冰密集度数据,并对水道的长度、走向、分布密度等特征进行数学统计,量化结果。将反演得到的水道和海冰密集度数据,应用于美国Los Alamos国家实验室发展的海冰模式CICE 4.0中,分别在空间分辨率为1o×和0.1o×1o的海冰模式中进行敏感性试验,验证水道信息的引入对模式的改进。所得成果可为北极冰-海耦合模式和气候模式中的水道参数化改进提供依据。
中文关键词: 冰间水道;分布特征;参数化;北极;
英文摘要: We derive the Arctic sea ice leads and concentrations from MODIS/Terra using the MPA (MODIS potential open water algorithm) method which is based on the thermal and visible radiometric properties. The original sea ice surface temperature (IST) data are provided by National Snow and Ice Data Center (NSIDC) and its spatial resolution is 1 km. The characteristic values of sea ice leads including the length, orientation, density and so on, will be computed statistically. The derived Arctic sea ice leads and concentrations will be applied in the Los Alamos sea ice model (CICE) 4.0 with its spatial resolution of 1o× and 0.1o×1o respectively. Sensitivity test will be done to test if the sea ice model is improved after the statistical values of sea ice leads are added. The results will provide support to the parameterization of Arctic sea ice leads in coupled sea ice-ocean and climate models.
英文关键词: sea ice leads;distribution characteristics;parameterization;Arctic;