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基于Argo资料和混合层模式的淡水通量产品重构
Freshwater flux product reconstruction based on Argo data and mixed layer model
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摘要: 海表淡水通量对于了解和模拟海洋大气过程具有重要作用,然而不同淡水通量的定量估计差别较大.基于混合层盐度平衡模式,利用Argo资料和OSCAR（海洋表面流实时分析场）流场相结合重构了2002—2008年逐周海表淡水通量产品.通过将重构产品与其他卫星产品和TAO（热带大气海洋观测网）观测进行对比分析表明,重构的淡水通量产品不仅能抓住其季节性信号,而且能够体现淡水通量的高频特征.该逐周淡水通量产品对海洋气候变化研究具有重要作用.Abstract: Sea surface freshwater flux（FWF,evaporation minus precipitation） plays an important role in understanding and modeling atmosphere and ocean processes,but there exists strong disagreement between different freshwater flux estimates.In this study,a weekly sea surface FWF product is reconstructed for the period from 2002 through 2008 based on the mixed layer salinity balance model for the first time,by combining the Argo data with OSCAR current data.Compared with the other precipitation and evaporation data from satellite product and TAO observations,the reconstructed FWF can capture not only the seasonal cycle of freshwater flux,but also some high-frequency features of freshwater flux.The FWF product provides a useful tool for studying the climate variation over the ocean.
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