| 摘要: |
| 本文提出一种最佳静态集合样本的构造方法, 利用不同时段内海浪有效波高的模拟偏差构造静态集合样本, 并将其与由模拟结果和观测资料统计的模式误差进行概率密度分布及时空相关性分析, 结果表明24h间隔有效波高偏差与后者的相关性最好, 称为最佳静态集合样本, 可用于近似背景误差。将所构造的静态集合样本应用于滤波同化调整过程, 采用MASNUM海浪模式, 利用Jason-1卫星高度计数据, 对2008年全球海域开展海浪同化实验, 实验结果表明, 基于最佳静态集合样本的海浪同化调整, 可以有效地改善海浪模式的模拟效果。 |
| 关键词: 静态集合样本 背景误差 海浪同化 |
| DOI：10.11693/hyhz20131000149 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973 项目), 2010CB950404 号; 国家高技术研究发展计划(863 项目), 2013AA09A506 号; 海洋可再生能源专项资金项目, GHME2011ZC07 号; 国家自然科学基金, 41106032 号; 中央级公益性科研院所基本科研业务费专项资金,GY02-2012G24 号。 |
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| CONSTRUCTION AND APPLICATION IN GLOBAL WAVE DATA ASSIMILATION OF STATIC SAMPLE SET |
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SUN Meng,YIN Xun-Qiang and YANG Yong-Zeng
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First Institute of Oceanography,State Oceanic Administration,First Institute of Oceanography,State Oceanic Administration,First Institute of Oceanography,State Oceanic Administration
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| Abstract: |
| Static assemble sample is defined as the difference between several-hour interval forecasts in this study. Comparison between static assemble sample and the model error indicated that static assemble sample could be regarded as approximation to the background error; and the 24h bias of significant wave height is the optimal for the static assemble sample. Several experiments by employing Jason-1 satellite altimeter data on global wave data assimilation were conducted using a filter method based on the static assemble sample in 2008. The results indicate that the assimilation method based on static assemble sample can improve and enhance the capability of the wave model significantly. |
| Key words: static assemble sample background error wave data assimilation |
